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34703 commits
Author | SHA1 | Message | Date | |
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91f28da8c9 |
random32: make prandom_u32() less predictable
This is the cleanup of the latest series of prandom_u32 experimentations consisting in using SipHash instead of Tausworthe to produce the randoms used by the network stack. The changes to the files were kept minimal, and the controversial commit that used to take noise from the fast_pool ( |
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1b307ac870 |
dma-mapping fixes for 5.10:
- document the new document dma_{alloc,free}_pages API - two fixups for the dma-mapping.h split -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAl+UN1ELHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYPhkg//QLMwY4Lib1IPdeYR4k/UE2E4YtPjQghucNHXDkrd jjV5tvGPfNDOEKeCOamivTcOmc3E+jFhQFjpHplqd4OjsfZT3EyXaopdX/qN1Bbo JIib0WAAxO1N2MRhEPJzGAsCkMPT32Q52/ka1QUOmr1E8VPrKhU4T9+FnTbj1rgF HbMk+PdV4+HP53CvK+aaOfNHqJqQoTBeCx9xebybAjxIBCI+LedRwC7haV4Zz6tg xSp9cW0Ztdp9U7u1dOO4gEqnL/fNk3+RWF5iwtyCi96uYmguV+/vAqpWMyej97q5 2Dx0jTQvj0FhnPug9asydadjtUqkzfRCSDGv4TybeHT/OZJEGAwkdJG7V/5PwGOg VCMpqi/WRIDPnUtN3OY4IZFigbyb4wJ6MOO/hvXagC7Lc2+z9ZhuUKUjSsV90LoT 2a4xwm9M1JAglYbhGvLl5cjzmDSdCFXuGYlJ18lRZx7d4cGi34hAqq3WfqqteHm+ IRfeAaWN7N+W8PgzGaDqfUVDrGNVZ7eo02kVicaJFCdJE5ecS3rUbyU8uVjhX7Sl h8zwBs8/5hFIKLCWUBiT+UBmvWXbG/a0plRh/vIvJ8lk4m4+kwdTRwgngpSkb3G/ ytAJPZTeI7r75zkwxTHPE01Khf8/qWJ3cdv97PpQH+7mlo4J0XUr5ssmiQ7DAHuu jjo= =0N7Y -----END PGP SIGNATURE----- Merge tag 'dma-mapping-5.10-1' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping fixes from Christoph Hellwig: - document the new dma_{alloc,free}_pages() API - two fixups for the dma-mapping.h split * tag 'dma-mapping-5.10-1' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: document dma_{alloc,free}_pages dma-mapping: move more functions to dma-map-ops.h ARM/sa1111: add a missing include of dma-map-ops.h |
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3744741ada |
random32: add noise from network and scheduling activity
With the removal of the interrupt perturbations in previous random32
change (random32: make prandom_u32() output unpredictable), the PRNG
has become 100% deterministic again. While SipHash is expected to be
way more robust against brute force than the previous Tausworthe LFSR,
there's still the risk that whoever has even one temporary access to
the PRNG's internal state is able to predict all subsequent draws till
the next reseed (roughly every minute). This may happen through a side
channel attack or any data leak.
This patch restores the spirit of commit
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c51f8f88d7 |
random32: make prandom_u32() output unpredictable
Non-cryptographic PRNGs may have great statistical properties, but are usually trivially predictable to someone who knows the algorithm, given a small sample of their output. An LFSR like prandom_u32() is particularly simple, even if the sample is widely scattered bits. It turns out the network stack uses prandom_u32() for some things like random port numbers which it would prefer are *not* trivially predictable. Predictability led to a practical DNS spoofing attack. Oops. This patch replaces the LFSR with a homebrew cryptographic PRNG based on the SipHash round function, which is in turn seeded with 128 bits of strong random key. (The authors of SipHash have *not* been consulted about this abuse of their algorithm.) Speed is prioritized over security; attacks are rare, while performance is always wanted. Replacing all callers of prandom_u32() is the quick fix. Whether to reinstate a weaker PRNG for uses which can tolerate it is an open question. Commit |
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a5e5c274c9 |
ring-buffer fix
The success return value of ring_buffer_resize() is stated to be zero, and checked that way. But it is incorrectly returning the size allocated. Also, a fix to a comment. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCX5LnlRQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qtPxAP439tmV1wWK4uBF6TLBahaPdj0tGe5b NT/ASnYjokZKWgEA//vmUBMMmNBohcd8DkkTu8Pp3tkc2b4RLR5WJIpXGwk= =1Og+ -----END PGP SIGNATURE----- Merge tag 'trace-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing ring-buffer fix from Steven Rostedt: "The success return value of ring_buffer_resize() is stated to be zero and checked that way. But it was incorrectly returning the size allocated. Also, a fix to a comment" * tag 'trace-v5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ring-buffer: Update the description for ring_buffer_wait ring-buffer: Return 0 on success from ring_buffer_resize() |
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41f762a15a |
More power management updates for 5.10-rc1
- Move the AVS drivers to new platform-specific locations and get rid of the drivers/power/avs directory (Ulf Hansson). - Add on/off notifiers and idle state accounting support to the generic power domains (genpd) framework (Ulf Hansson, Lina Iyer). - Ulf will maintain the PM domain part of cpuidle-psci (Ulf Hansson). - Make intel_idle disregard ACPI _CST if it cannot use the data returned by that method (Mel Gorman). - Modify intel_pstate to avoid leaving useless sysfs directory structure behind if it cannot be registered (Chen Yu). - Fix domain detection in the RAPL power capping driver and prevent it from failing to enumerate the Psys RAPL domain (Zhang Rui). - Allow acpi-cpufreq to use ACPI _PSD information with Family 19 and later AMD chips (Wei Huang). - Update the driver assumptions comment in intel_idle and fix a kerneldoc comment in the runtime PM framework (Alexander Monakov, Bean Huo). - Avoid unnecessary resets of the cached frequency in the schedutil cpufreq governor to reduce overhead (Wei Wang). - Clean up the cpufreq core a bit (Viresh Kumar). - Make assorted minor janitorial changes (Daniel Lezcano, Geert Uytterhoeven, Hubert Jasudowicz, Tom Rix). - Clean up and optimize the cpupower utility somewhat (Colin Ian King, Martin Kaistra). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl+TD4gSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRx3AgP/0Fpi50+Kggr7pIXKElwg7ECJA0nOLT6 gp4Vc/J/3r6zqK0ANDgCRlEMckAT61ukll+eU+BlavBrI4ZYj/Homi0+u53t1GjM AOwj1SmQgSBcBavWsBOc8+12X6wYLzyQbyWc53oYH5os537n8s7zkSZuSBcGFUgb wWF4xOeuW/ETsxAzEYmY7LvtBeEmo3UjV0fZPPbo/ro5EHDaOpvO/4EUDjCQxR6b CvyjgLlxuAOFWG/B5lVTCx7S6MmBjHXUIFUizt+TA6YjyGd0mG0i0f7mgzs6hqUD gzERDSlehBC3zPh5O35HNGUG8ulvDi9+ugxuckFHu/j4wEeZswp8AuIpdLI6Mcnc LDb+LTeypAB5d1fzHeSziv8AL08cUAS6QT+q96whYibQs6WA1mE9yXECyg6ZGsLt 1KPAc8KD4ojwjo9vtk9VU0ZaUcVBMnqyK+GK929l0nXohw2Fae6X/NlpQ0D7joZA NM+dWMXpHy6tuVOgdUmrmN+P6vWd8ApWBeufkUFsCzrh3zG57yVaLl2SAjEtpKh0 Emr/kJ8Ox8cf++6mGKseR2ZbkGn0Tz2GD5l3hIAGnIv9Nda3YgCc6RyV7U9se7OW 2xnQvrgXqQKyjjziptVFqDotcC/KXFACr3YZX6GlW675NOMXSGk1ZYI3FbrsM8yd 0/zq7PyYmb0D =TFKg -----END PGP SIGNATURE----- Merge tag 'pm-5.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "First of all, the adaptive voltage scaling (AVS) drivers go to new platform-specific locations as planned (this part was reported to have merge conflicts against the new arm-soc updates in linux-next). In addition to that, there are some fixes (intel_idle, intel_pstate, RAPL, acpi_cpufreq), the addition of on/off notifiers and idle state accounting support to the generic power domains (genpd) code and some janitorial changes all over. Specifics: - Move the AVS drivers to new platform-specific locations and get rid of the drivers/power/avs directory (Ulf Hansson). - Add on/off notifiers and idle state accounting support to the generic power domains (genpd) framework (Ulf Hansson, Lina Iyer). - Ulf will maintain the PM domain part of cpuidle-psci (Ulf Hansson). - Make intel_idle disregard ACPI _CST if it cannot use the data returned by that method (Mel Gorman). - Modify intel_pstate to avoid leaving useless sysfs directory structure behind if it cannot be registered (Chen Yu). - Fix domain detection in the RAPL power capping driver and prevent it from failing to enumerate the Psys RAPL domain (Zhang Rui). - Allow acpi-cpufreq to use ACPI _PSD information with Family 19 and later AMD chips (Wei Huang). - Update the driver assumptions comment in intel_idle and fix a kerneldoc comment in the runtime PM framework (Alexander Monakov, Bean Huo). - Avoid unnecessary resets of the cached frequency in the schedutil cpufreq governor to reduce overhead (Wei Wang). - Clean up the cpufreq core a bit (Viresh Kumar). - Make assorted minor janitorial changes (Daniel Lezcano, Geert Uytterhoeven, Hubert Jasudowicz, Tom Rix). - Clean up and optimize the cpupower utility somewhat (Colin Ian King, Martin Kaistra)" * tag 'pm-5.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (23 commits) PM: sleep: remove unreachable break PM: AVS: Drop the avs directory and the corresponding Kconfig PM: AVS: qcom-cpr: Move the driver to the qcom specific drivers PM: runtime: Fix typo in pm_runtime_set_active() helper comment PM: domains: Fix build error for genpd notifiers powercap: Fix typo in Kconfig "Plance" -> "Plane" cpufreq: schedutil: restore cached freq when next_f is not changed acpi-cpufreq: Honor _PSD table setting on new AMD CPUs PM: AVS: smartreflex Move driver to soc specific drivers PM: AVS: rockchip-io: Move the driver to the rockchip specific drivers PM: domains: enable domain idle state accounting PM: domains: Add curly braces to delimit comment + statement block PM: domains: Add support for PM domain on/off notifiers for genpd powercap/intel_rapl: enumerate Psys RAPL domain together with package RAPL domain powercap/intel_rapl: Fix domain detection intel_idle: Ignore _CST if control cannot be taken from the platform cpuidle: Remove pointless stub intel_idle: mention assumption that WBINVD is not needed MAINTAINERS: Add section for cpuidle-psci PM domain cpufreq: intel_pstate: Delete intel_pstate sysfs if failed to register the driver ... |
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3cb12d27ff |
Fixes for 5.10-rc1 from the networking tree:
Cross-tree/merge window issues: - rtl8150: don't incorrectly assign random MAC addresses; fix late in the 5.9 cycle started depending on a return code from a function which changed with the 5.10 PR from the usb subsystem Current release - regressions: - Revert "virtio-net: ethtool configurable RXCSUM", it was causing crashes at probe when control vq was not negotiated/available Previous releases - regressions: - ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO bus, only first device would be probed correctly - nexthop: Fix performance regression in nexthop deletion by effectively switching from recently added synchronize_rcu() to synchronize_rcu_expedited() - netsec: ignore 'phy-mode' device property on ACPI systems; the property is not populated correctly by the firmware, but firmware configures the PHY so just keep boot settings Previous releases - always broken: - tcp: fix to update snd_wl1 in bulk receiver fast path, addressing bulk transfers getting "stuck" - icmp: randomize the global rate limiter to prevent attackers from getting useful signal - r8169: fix operation under forced interrupt threading, make the driver always use hard irqs, even on RT, given the handler is light and only wants to schedule napi (and do so through a _irqoff() variant, preferably) - bpf: Enforce pointer id generation for all may-be-null register type to avoid pointers erroneously getting marked as null-checked - tipc: re-configure queue limit for broadcast link - net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels - fix various issues in chelsio inline tls driver Misc: - bpf: improve just-added bpf_redirect_neigh() helper api to support supplying nexthop by the caller - in case BPF program has already done a lookup we can avoid doing another one - remove unnecessary break statements - make MCTCP not select IPV6, but rather depend on it Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAl+R+5UACgkQMUZtbf5S Irt9KxAAiYme2aSvMOni0NQsOgQ5mVsy7tk0/4dyRqkAx0ggrfGcFuhgZYNm8ZKY KoQsQyn30Wb/2wAp1vX2I4Fod67rFyBfQg/8iWiEAu47X7Bj1lpPPJexSPKhF9/X e0TuGxZtoaDuV9C3Su/FOjRmnShGSFQu1SCyJThshwaGsFL3YQ0Ut07VRgRF8x05 A5fy2SVVIw0JOQgV1oH0GP5oEK3c50oGnaXt8emm56PxVIfAYY0oq69hQUzrfMFP zV9R0XbnbCIibT8R3lEghjtXavtQTzK5rYDKazTeOyDU87M+yuykNYj7MhgDwl9Q UdJkH2OpMlJylEH3asUjz/+ObMhXfOuj/ZS3INtO5omBJx7x76egDZPMQe4wlpcC NT5EZMS7kBdQL8xXDob7hXsvFpuEErSUGruYTHp4H52A9ke1dRTH2kQszcKk87V3 s+aVVPtJ5bHzF3oGEvfwP0DFLTF6WvjD0Ts0LmTY2DhpE//tFWV37j60Ni5XU21X fCPooihQbLOsq9D8zc0ydEvCg2LLWMXM5ovCkqfIAJzbGVYhnxJSryZwpOlKDS0y LiUmLcTZDoNR/szx0aJhVHdUUVgXDX/GsllHoc1w7ZvDRMJn40K+xnaF3dSMwtIl imhfc5pPi6fdBgjB0cFYRPfhwiwlPMQ4YFsOq9JvynJzmt6P5FQ= =ceke -----END PGP SIGNATURE----- Merge tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Cross-tree/merge window issues: - rtl8150: don't incorrectly assign random MAC addresses; fix late in the 5.9 cycle started depending on a return code from a function which changed with the 5.10 PR from the usb subsystem Current release regressions: - Revert "virtio-net: ethtool configurable RXCSUM", it was causing crashes at probe when control vq was not negotiated/available Previous release regressions: - ixgbe: fix probing of multi-port 10 Gigabit Intel NICs with an MDIO bus, only first device would be probed correctly - nexthop: Fix performance regression in nexthop deletion by effectively switching from recently added synchronize_rcu() to synchronize_rcu_expedited() - netsec: ignore 'phy-mode' device property on ACPI systems; the property is not populated correctly by the firmware, but firmware configures the PHY so just keep boot settings Previous releases - always broken: - tcp: fix to update snd_wl1 in bulk receiver fast path, addressing bulk transfers getting "stuck" - icmp: randomize the global rate limiter to prevent attackers from getting useful signal - r8169: fix operation under forced interrupt threading, make the driver always use hard irqs, even on RT, given the handler is light and only wants to schedule napi (and do so through a _irqoff() variant, preferably) - bpf: Enforce pointer id generation for all may-be-null register type to avoid pointers erroneously getting marked as null-checked - tipc: re-configure queue limit for broadcast link - net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels - fix various issues in chelsio inline tls driver Misc: - bpf: improve just-added bpf_redirect_neigh() helper api to support supplying nexthop by the caller - in case BPF program has already done a lookup we can avoid doing another one - remove unnecessary break statements - make MCTCP not select IPV6, but rather depend on it" * tag 'net-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits) tcp: fix to update snd_wl1 in bulk receiver fast path net: Properly typecast int values to set sk_max_pacing_rate netfilter: nf_fwd_netdev: clear timestamp in forwarding path ibmvnic: save changed mac address to adapter->mac_addr selftests: mptcp: depends on built-in IPv6 Revert "virtio-net: ethtool configurable RXCSUM" rtnetlink: fix data overflow in rtnl_calcit() net: ethernet: mtk-star-emac: select REGMAP_MMIO net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device bpf, libbpf: Guard bpf inline asm from bpf_tail_call_static bpf, selftests: Extend test_tc_redirect to use modified bpf_redirect_neigh() bpf: Fix bpf_redirect_neigh helper api to support supplying nexthop mptcp: depends on IPV6 but not as a module sfc: move initialisation of efx->filter_sem to efx_init_struct() mpls: load mpls_gso after mpls_iptunnel net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels net/sched: act_gate: Unlock ->tcfa_lock in tc_setup_flow_action() net: dsa: bcm_sf2: make const array static, makes object smaller mptcp: MPTCP_IPV6 should depend on IPV6 instead of selecting it ... |
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4a22709e21 |
arch-cleanup-2020-10-22
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746b25b1aa |
Kbuild updates for v5.10
- Support 'make compile_commands.json' to generate the compilation database more easily, avoiding stale entries - Support 'make clang-analyzer' and 'make clang-tidy' for static checks using clang-tidy - Preprocess scripts/modules.lds.S to allow CONFIG options in the module linker script - Drop cc-option tests from compiler flags supported by our minimal GCC/Clang versions - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y - Use sha1 build id for both BFD linker and LLD - Improve deb-pkg for reproducible builds and rootless builds - Remove stale, useless scripts/namespace.pl - Turn -Wreturn-type warning into error - Fix build error of deb-pkg when CONFIG_MODULES=n - Replace 'hostname' command with more portable 'uname -n' - Various Makefile cleanups -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAl+RfS0VHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGG1QP/2hzoMzK1YXErPUhGrhYU1rxz7Nu HkLTIkyKF1HPwSJf5XyNW/FTBI4SDlkNoVg/weEDCS1yFxxpvQLIck8ChzA1kIIM P+1IfBWOTzqn91XsapU2zwSno3gylphVchVIvYAB3oLUotGeMSluy1cQtBRzyA5D rj2Q7H8fzkzk3YoBcBC/BOKDlfo/usqQ1X/gsfRFwN/BJxeZSYoujNBE7KtHaDsd 8K/ggBIqmST4NBn+M8c11d8CxzvWbtG1gq3EkUL5nG8T13DsGn1EFC0SPt85bkvv f9YywfJi37HixhZzK6tXYjN/PWoiEY6z90mhd0NtZghQT7kQMiTQ3sWrM8dX3ssf phBzO94uFQDjhyxOaSSsCoI/TIciAPo4+G8PNjcaEtj63IEfhEz/dnlstYwY5Y9P Pp3aZtVjSGJwGW2u2EUYj6paFVqjf6DXQjQKPNHnsYCEidIvFTjjguRGvx9gl6mx yd8oseOsAtOEf0alRe9MMdvN17O3UrRAxgBdap7fktg02TLVRGxZIbuwKmBf29ho ORl9zeFkYBn6XQFyuItJoXy/kYFyHDaBEPYCRQcY4dwqcjZIiAc/FhYbqYthJ59L 5vLN2etmDIVSuUv1J5nBqHHGCqJChykbqg7riQ651dCNKw4gZB8ctCay2lXhBXMg 1mqOcoG5WWL7//F+ =tZRN -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Support 'make compile_commands.json' to generate the compilation database more easily, avoiding stale entries - Support 'make clang-analyzer' and 'make clang-tidy' for static checks using clang-tidy - Preprocess scripts/modules.lds.S to allow CONFIG options in the module linker script - Drop cc-option tests from compiler flags supported by our minimal GCC/Clang versions - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y - Use sha1 build id for both BFD linker and LLD - Improve deb-pkg for reproducible builds and rootless builds - Remove stale, useless scripts/namespace.pl - Turn -Wreturn-type warning into error - Fix build error of deb-pkg when CONFIG_MODULES=n - Replace 'hostname' command with more portable 'uname -n' - Various Makefile cleanups * tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) kbuild: Use uname for LINUX_COMPILE_HOST detection kbuild: Only add -fno-var-tracking-assignments for old GCC versions kbuild: remove leftover comment for filechk utility treewide: remove DISABLE_LTO kbuild: deb-pkg: clean up package name variables kbuild: deb-pkg: do not build linux-headers package if CONFIG_MODULES=n kbuild: enforce -Werror=return-type scripts: remove namespace.pl builddeb: Add support for all required debian/rules targets builddeb: Enable rootless builds builddeb: Pass -n to gzip for reproducible packages kbuild: split the build log of kallsyms kbuild: explicitly specify the build id style scripts/setlocalversion: make git describe output more reliable kbuild: remove cc-option test of -Werror=date-time kbuild: remove cc-option test of -fno-stack-check kbuild: remove cc-option test of -fno-strict-overflow kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles kbuild: remove redundant CONFIG_KASAN check from scripts/Makefile.kasan kbuild: do not create built-in objects for external module builds ... |
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2b71482060 |
Modules updates for v5.10
Summary of modules changes for the 5.10 merge window: - Code cleanups. More informative error messages and statically initialize init_free_wq to avoid a workqueue warning. Signed-off-by: Jessica Yu <jeyu@kernel.org> -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEVrp26glSWYuDNrCUwEV+OM47wXIFAl+RbXUQHGpleXVAa2Vy bmVsLm9yZwAKCRDARX44zjvBcm/QD/42Nm/9UZB1DKL2vh/rWw3UJWN0BU05+1s9 QvSVQxKEXgEA3tEE1HP7LL5g/6JVFqypghUsX69Uf79P0FlIjlvcCoOQPSaNLXyj Md90Jg26AQiI9CrtDCQx2uli8KVUCVAtzuKOqShjUwSiIvI8yBoQpjMMRdnmxNGT HTM0yEbdD4Nfa9F/v51J0Tnq3Czj8IlIEjCuHVpyNTbaRZVGfmIJygKDRWQWh4lU fnOWLzHeARsvW7T0VvpolenPhoLp+Z+mWKeNg2XJpXpMc9RtZk85DUPn0MDVbL+b sZhQXTTsdvF0GVCsdm06wyWLuFc9ti7Oy5Ca+aHdaYsWLoYpoGwW7F7EID4dHu0a Sj9cUIWz7ss+TA64Itd5PImaSQasdsU0mGn5PVZNxqnBjlaw6scMpc8AZVXJhqPR ihSQgNELTV62AtS4zmpu2K0uVMsjCHmpXMMVkpxZYUfFOoHV4kqFn1iMGPUe9ud3 dLq3scH6GY0m2nLa0n/Qwk7GLA3X0WO49BDBY7Vwg2XbqY52i5GYiKWJux2wf5hM j4+F/iB3IVysocKpP3brGU7hjPKCjRy9KwJ7IHW7w08j/9Q0p/RNGLC+ZyP8op+i WgOjXyWiPpLr1XDS8NYVCVAEXiDBa87pKWhdkOahYLvbp24bVWlWRRFk0U8Nl06y rx6DGdGrLQ== =7nzH -----END PGP SIGNATURE----- Merge tag 'modules-for-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux Pull modules updates from Jessica Yu: "Code cleanups: more informative error messages and statically initialize init_free_wq to avoid a workqueue warning" * tag 'modules-for-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: module: statically initialize init section freeing data module: Add more error message for failed kernel module loading |
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f56e65dff6 |
Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull initial set_fs() removal from Al Viro: "Christoph's set_fs base series + fixups" * 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: Allow a NULL pos pointer to __kernel_read fs: Allow a NULL pos pointer to __kernel_write powerpc: remove address space overrides using set_fs() powerpc: use non-set_fs based maccess routines x86: remove address space overrides using set_fs() x86: make TASK_SIZE_MAX usable from assembly code x86: move PAGE_OFFSET, TASK_SIZE & friends to page_{32,64}_types.h lkdtm: remove set_fs-based tests test_bitmap: remove user bitmap tests uaccess: add infrastructure for kernel builds with set_fs() fs: don't allow splice read/write without explicit ops fs: don't allow kernel reads and writes without iter ops sysctl: Convert to iter interfaces proc: add a read_iter method to proc proc_ops proc: cleanup the compat vs no compat file ops proc: remove a level of indentation in proc_get_inode |
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e1981f75d3 |
ring-buffer: Update the description for ring_buffer_wait
The function changed at some point, but the description was not updated. Link: https://lkml.kernel.org/r/20201017095246.5170-1-hqjagain@gmail.com Signed-off-by: Qiujun Huang <hqjagain@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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0a1754b2a9 |
ring-buffer: Return 0 on success from ring_buffer_resize()
We don't need to check the new buffer size, and the return value
had confused resize_buffer_duplicate_size().
...
ret = ring_buffer_resize(trace_buf->buffer,
per_cpu_ptr(size_buf->data,cpu_id)->entries, cpu_id);
if (ret == 0)
per_cpu_ptr(trace_buf->data, cpu_id)->entries =
per_cpu_ptr(size_buf->data, cpu_id)->entries;
...
Link: https://lkml.kernel.org/r/20201019142242.11560-1-hqjagain@gmail.com
Cc: stable@vger.kernel.org
Fixes:
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f8e48a3dca |
lockdep: Fix preemption WARN for spurious IRQ-enable
It is valid (albeit uncommon) to call local_irq_enable() without first
having called local_irq_disable(). In this case we enter
lockdep_hardirqs_on*() with IRQs enabled and trip a preemption warning
for using __this_cpu_read().
Use this_cpu_read() instead to avoid the warning.
Fixes:
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0f6372e522 |
treewide: remove DISABLE_LTO
This change removes all instances of DISABLE_LTO from Makefiles, as they are currently unused, and the preferred method of disabling LTO is to filter out the flags instead. Note added by Masahiro Yamada: DISABLE_LTO was added as preparation for GCC LTO, but GCC LTO was not pulled into the mainline. (https://lkml.org/lkml/2014/4/8/272) Suggested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
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c2f7d08ccc |
futex: Adjust absolute futex timeouts with per time namespace offset
For all commands except FUTEX_WAIT, the timeout is interpreted as an
absolute value. This absolute value is inside the task's time namespace and
has to be converted to the host's time.
Fixes:
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695cebe58d |
dma-mapping: move more functions to dma-map-ops.h
Due to a mismerge a bunch of prototypes that should have moved to dma-map-ops.h are still in dma-mapping.h, fix that up. Signed-off-by: Christoph Hellwig <hch@lst.de> |
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93c230e3f5 |
bpf: Enforce id generation for all may-be-null register type
The commit |
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76702a2e72 |
bpf: Remove unneeded break
A break is not needed if it is preceded by a return. Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201019173846.1021-1-trix@redhat.com |
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0070ea2962 |
cpufreq: schedutil: restore cached freq when next_f is not changed
We have the raw cached freq to reduce the chance in calling cpufreq driver where it could be costly in some arch/SoC. Currently, the raw cached freq is reset in sugov_update_single() when it avoids frequency reduction (which is not desirable sometimes), but it is better to restore the previous value of it in that case, because it may not change in the next cycle and it is not necessary to change the CPU frequency then. Adapted from https://android-review.googlesource.com/1352810/ Signed-off-by: Wei Wang <wvw@google.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [ rjw: Subject edit and changelog rewrite ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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41eea65e2a |
Merge tag 'core-rcu-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU changes from Ingo Molnar: - Debugging for smp_call_function() - RT raw/non-raw lock ordering fixes - Strict grace periods for KASAN - New smp_call_function() torture test - Torture-test updates - Documentation updates - Miscellaneous fixes [ This doesn't actually pull the tag - I've dropped the last merge from the RCU branch due to questions about the series. - Linus ] * tag 'core-rcu-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (77 commits) smp: Make symbol 'csd_bug_count' static kernel/smp: Provide CSD lock timeout diagnostics smp: Add source and destination CPUs to __call_single_data rcu: Shrink each possible cpu krcp rcu/segcblist: Prevent useless GP start if no CBs to accelerate torture: Add gdb support rcutorture: Allow pointer leaks to test diagnostic code rcutorture: Hoist OOM registry up one level refperf: Avoid null pointer dereference when buf fails to allocate rcutorture: Properly synchronize with OOM notifier rcutorture: Properly set rcu_fwds for OOM handling torture: Add kvm.sh --help and update help message rcutorture: Add CONFIG_PROVE_RCU_LIST to TREE05 torture: Update initrd documentation rcutorture: Replace HTTP links with HTTPS ones locktorture: Make function torture_percpu_rwsem_init() static torture: document --allcpus argument added to the kvm.sh script rcutorture: Output number of elapsed grace periods rcutorture: Remove KCSAN stubs rcu: Remove unused "cpu" parameter from rcu_report_qs_rdp() ... |
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ecb8ac8b1f |
mm/madvise: introduce process_madvise() syscall: an external memory hinting API
There is usecase that System Management Software(SMS) want to give a memory hint like MADV_[COLD|PAGEEOUT] to other processes and in the case of Android, it is the ActivityManagerService. The information required to make the reclaim decision is not known to the app. Instead, it is known to the centralized userspace daemon(ActivityManagerService), and that daemon must be able to initiate reclaim on its own without any app involvement. To solve the issue, this patch introduces a new syscall process_madvise(2). It uses pidfd of an external process to give the hint. It also supports vector address range because Android app has thousands of vmas due to zygote so it's totally waste of CPU and power if we should call the syscall one by one for each vma.(With testing 2000-vma syscall vs 1-vector syscall, it showed 15% performance improvement. I think it would be bigger in real practice because the testing ran very cache friendly environment). Another potential use case for the vector range is to amortize the cost ofTLB shootdowns for multiple ranges when using MADV_DONTNEED; this could benefit users like TCP receive zerocopy and malloc implementations. In future, we could find more usecases for other advises so let's make it happens as API since we introduce a new syscall at this moment. With that, existing madvise(2) user could replace it with process_madvise(2) with their own pid if they want to have batch address ranges support feature. ince it could affect other process's address range, only privileged process(PTRACE_MODE_ATTACH_FSCREDS) or something else(e.g., being the same UID) gives it the right to ptrace the process could use it successfully. The flag argument is reserved for future use if we need to extend the API. I think supporting all hints madvise has/will supported/support to process_madvise is rather risky. Because we are not sure all hints make sense from external process and implementation for the hint may rely on the caller being in the current context so it could be error-prone. Thus, I just limited hints as MADV_[COLD|PAGEOUT] in this patch. If someone want to add other hints, we could hear the usecase and review it for each hint. It's safer for maintenance rather than introducing a buggy syscall but hard to fix it later. So finally, the API is as follows, ssize_t process_madvise(int pidfd, const struct iovec *iovec, unsigned long vlen, int advice, unsigned int flags); DESCRIPTION The process_madvise() system call is used to give advice or directions to the kernel about the address ranges from external process as well as local process. It provides the advice to address ranges of process described by iovec and vlen. The goal of such advice is to improve system or application performance. The pidfd selects the process referred to by the PID file descriptor specified in pidfd. (See pidofd_open(2) for further information) The pointer iovec points to an array of iovec structures, defined in <sys/uio.h> as: struct iovec { void *iov_base; /* starting address */ size_t iov_len; /* number of bytes to be advised */ }; The iovec describes address ranges beginning at address(iov_base) and with size length of bytes(iov_len). The vlen represents the number of elements in iovec. The advice is indicated in the advice argument, which is one of the following at this moment if the target process specified by pidfd is external. MADV_COLD MADV_PAGEOUT Permission to provide a hint to external process is governed by a ptrace access mode PTRACE_MODE_ATTACH_FSCREDS check; see ptrace(2). The process_madvise supports every advice madvise(2) has if target process is in same thread group with calling process so user could use process_madvise(2) to extend existing madvise(2) to support vector address ranges. RETURN VALUE On success, process_madvise() returns the number of bytes advised. This return value may be less than the total number of requested bytes, if an error occurred. The caller should check return value to determine whether a partial advice occurred. FAQ: Q.1 - Why does any external entity have better knowledge? Quote from Sandeep "For Android, every application (including the special SystemServer) are forked from Zygote. The reason of course is to share as many libraries and classes between the two as possible to benefit from the preloading during boot. After applications start, (almost) all of the APIs end up calling into this SystemServer process over IPC (binder) and back to the application. In a fully running system, the SystemServer monitors every single process periodically to calculate their PSS / RSS and also decides which process is "important" to the user for interactivity. So, because of how these processes start _and_ the fact that the SystemServer is looping to monitor each process, it does tend to *know* which address range of the application is not used / useful. Besides, we can never rely on applications to clean things up themselves. We've had the "hey app1, the system is low on memory, please trim your memory usage down" notifications for a long time[1]. They rely on applications honoring the broadcasts and very few do. So, if we want to avoid the inevitable killing of the application and restarting it, some way to be able to tell the OS about unimportant memory in these applications will be useful. - ssp Q.2 - How to guarantee the race(i.e., object validation) between when giving a hint from an external process and get the hint from the target process? process_madvise operates on the target process's address space as it exists at the instant that process_madvise is called. If the space target process can run between the time the process_madvise process inspects the target process address space and the time that process_madvise is actually called, process_madvise may operate on memory regions that the calling process does not expect. It's the responsibility of the process calling process_madvise to close this race condition. For example, the calling process can suspend the target process with ptrace, SIGSTOP, or the freezer cgroup so that it doesn't have an opportunity to change its own address space before process_madvise is called. Another option is to operate on memory regions that the caller knows a priori will be unchanged in the target process. Yet another option is to accept the race for certain process_madvise calls after reasoning that mistargeting will do no harm. The suggested API itself does not provide synchronization. It also apply other APIs like move_pages, process_vm_write. The race isn't really a problem though. Why is it so wrong to require that callers do their own synchronization in some manner? Nobody objects to write(2) merely because it's possible for two processes to open the same file and clobber each other's writes --- instead, we tell people to use flock or something. Think about mmap. It never guarantees newly allocated address space is still valid when the user tries to access it because other threads could unmap the memory right before. That's where we need synchronization by using other API or design from userside. It shouldn't be part of API itself. If someone needs more fine-grained synchronization rather than process level, there were two ideas suggested - cookie[2] and anon-fd[3]. Both are applicable via using last reserved argument of the API but I don't think it's necessary right now since we have already ways to prevent the race so don't want to add additional complexity with more fine-grained optimization model. To make the API extend, it reserved an unsigned long as last argument so we could support it in future if someone really needs it. Q.3 - Why doesn't ptrace work? Injecting an madvise in the target process using ptrace would not work for us because such injected madvise would have to be executed by the target process, which means that process would have to be runnable and that creates the risk of the abovementioned race and hinting a wrong VMA. Furthermore, we want to act the hint in caller's context, not the callee's, because the callee is usually limited in cpuset/cgroups or even freezed state so they can't act by themselves quick enough, which causes more thrashing/kill. It doesn't work if the target process are ptraced(e.g., strace, debugger, minidump) because a process can have at most one ptracer. [1] https://developer.android.com/topic/performance/memory" [2] process_getinfo for getting the cookie which is updated whenever vma of process address layout are changed - Daniel Colascione - https://lore.kernel.org/lkml/20190520035254.57579-1-minchan@kernel.org/T/#m7694416fd179b2066a2c62b5b139b14e3894e224 [3] anonymous fd which is used for the object(i.e., address range) validation - Michal Hocko - https://lore.kernel.org/lkml/20200120112722.GY18451@dhcp22.suse.cz/ [minchan@kernel.org: fix process_madvise build break for arm64] Link: http://lkml.kernel.org/r/20200303145756.GA219683@google.com [minchan@kernel.org: fix build error for mips of process_madvise] Link: http://lkml.kernel.org/r/20200508052517.GA197378@google.com [akpm@linux-foundation.org: fix patch ordering issue] [akpm@linux-foundation.org: fix arm64 whoops] [minchan@kernel.org: make process_madvise() vlen arg have type size_t, per Florian] [akpm@linux-foundation.org: fix i386 build] [sfr@canb.auug.org.au: fix syscall numbering] Link: https://lkml.kernel.org/r/20200905142639.49fc3f1a@canb.auug.org.au [sfr@canb.auug.org.au: madvise.c needs compat.h] Link: https://lkml.kernel.org/r/20200908204547.285646b4@canb.auug.org.au [minchan@kernel.org: fix mips build] Link: https://lkml.kernel.org/r/20200909173655.GC2435453@google.com [yuehaibing@huawei.com: remove duplicate header which is included twice] Link: https://lkml.kernel.org/r/20200915121550.30584-1-yuehaibing@huawei.com [minchan@kernel.org: do not use helper functions for process_madvise] Link: https://lkml.kernel.org/r/20200921175539.GB387368@google.com [akpm@linux-foundation.org: pidfd_get_pid() gained an argument] [sfr@canb.auug.org.au: fix up for "iov_iter: transparently handle compat iovecs in import_iovec"] Link: https://lkml.kernel.org/r/20200928212542.468e1fef@canb.auug.org.au Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: David Rientjes <rientjes@google.com> Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com> Cc: Brian Geffon <bgeffon@google.com> Cc: Christian Brauner <christian@brauner.io> Cc: Daniel Colascione <dancol@google.com> Cc: Jann Horn <jannh@google.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Dias <joaodias@google.com> Cc: Kirill Tkhai <ktkhai@virtuozzo.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleksandr Natalenko <oleksandr@redhat.com> Cc: Sandeep Patil <sspatil@google.com> Cc: SeongJae Park <sj38.park@gmail.com> Cc: SeongJae Park <sjpark@amazon.de> Cc: Shakeel Butt <shakeelb@google.com> Cc: Sonny Rao <sonnyrao@google.com> Cc: Tim Murray <timmurray@google.com> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Florian Weimer <fw@deneb.enyo.de> Cc: <linux-man@vger.kernel.org> Link: http://lkml.kernel.org/r/20200302193630.68771-3-minchan@kernel.org Link: http://lkml.kernel.org/r/20200508183320.GA125527@google.com Link: http://lkml.kernel.org/r/20200622192900.22757-4-minchan@kernel.org Link: https://lkml.kernel.org/r/20200901000633.1920247-4-minchan@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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1aa92cd31c |
pid: move pidfd_get_pid() to pid.c
process_madvise syscall needs pidfd_get_pid function to translate pidfd to pid so this patch move the function to kernel/pid.c. Suggested-by: Alexander Duyck <alexander.h.duyck@linux.intel.com> Signed-off-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Alexander Duyck <alexander.h.duyck@linux.intel.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jann Horn <jannh@google.com> Cc: Brian Geffon <bgeffon@google.com> Cc: Daniel Colascione <dancol@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Dias <joaodias@google.com> Cc: Kirill Tkhai <ktkhai@virtuozzo.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Oleksandr Natalenko <oleksandr@redhat.com> Cc: Sandeep Patil <sspatil@google.com> Cc: SeongJae Park <sj38.park@gmail.com> Cc: SeongJae Park <sjpark@amazon.de> Cc: Shakeel Butt <shakeelb@google.com> Cc: Sonny Rao <sonnyrao@google.com> Cc: Tim Murray <timmurray@google.com> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Florian Weimer <fw@deneb.enyo.de> Cc: <linux-man@vger.kernel.org> Link: http://lkml.kernel.org/r/20200302193630.68771-5-minchan@kernel.org Link: http://lkml.kernel.org/r/20200622192900.22757-3-minchan@kernel.org Link: https://lkml.kernel.org/r/20200901000633.1920247-3-minchan@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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91989c7078 |
task_work: cleanup notification modes
A previous commit changed the notification mode from true/false to an
int, allowing notify-no, notify-yes, or signal-notify. This was
backwards compatible in the sense that any existing true/false user
would translate to either 0 (on notification sent) or 1, the latter
which mapped to TWA_RESUME. TWA_SIGNAL was assigned a value of 2.
Clean this up properly, and define a proper enum for the notification
mode. Now we have:
- TWA_NONE. This is 0, same as before the original change, meaning no
notification requested.
- TWA_RESUME. This is 1, same as before the original change, meaning
that we use TIF_NOTIFY_RESUME.
- TWA_SIGNAL. This uses TIF_SIGPENDING/JOBCTL_TASK_WORK for the
notification.
Clean up all the callers, switching their 0/1/false/true to using the
appropriate TWA_* mode for notifications.
Fixes:
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3c532798ec |
tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume()
All the callers currently do this, clean it up and move the clearing into tracehook_notify_resume() instead. Reviewed-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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54a4c789ca |
docs updates for v5.10-rc1
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAl+JNGYACgkQCF8+vY7k 4RV/TA//ZoRoMQE5B6zwO4kOGILMbmW2uepjoEysLgus2ctkTUoRkpNLWS3SozcU 6c/eW1rC4Fji24te6lwusciZa5zQgbGMjFYk1LhnJ65lJA+kQ+kV1DGz/ZWtklMM gLX20+tQADqGl+u2dmFCvmRhPWJ9nzt1C0auN7dGeu+9g97GnhKG6o2Kv/nVCb68 qMmAs9UrfN24DO5G1ixkdY08nSNJPrpgQnIR2ruUysUII/yTTtcnmHDbH3WWL6+9 2P87AZ6zsa3FdBhAjmG5YJklQgPkLFWEykHMTqq/Mkcpff/JB/AayrL6XNB2QoZb YXLHJp3Na6iBmdmHhecg+VQDgz28UfMk+p+HFoJh8RTtJa9/qJvYdJmIE/mUPrnY gL4jNgMVwkptGHXh7IRuSLysT5heJPMQss6TfZ6yYadeOIpx7W8MCAYnGffiElLQ hmKdmyCszS3SERJz40EOBdr2NQYcDEUt2NtEhdVfium21A4PFOdJlCejifGhJyzP n1QcyMXHnh/d4zecA6fcD0LVyxBgngeKEvdtOLZJ1ubxWwHhgWTN8R4HedoN2Nb9 cLEUK8Td+9n2RVS8UED4BBI+6vfN3Y6Syjvy8qD3pCs4SBcu3k790mf47t2QhkEq +Ho06gdrGJdEcSDO8zVY7qjZX/GX/dbRHCb5CRokL5FmNWhXd/Y= =26wi -----END PGP SIGNATURE----- Merge tag 'docs/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull documentation updates from Mauro Carvalho Chehab: "A series of patches addressing warnings produced by make htmldocs. This includes: - kernel-doc markup fixes - ReST fixes - Updates at the build system in order to support newer versions of the docs build toolchain (Sphinx) After this series, the number of html build warnings should reduce significantly, and building with Sphinx 3.1 or later should now be supported (although it is still recommended to use Sphinx 2.4.4). As agreed with Jon, I should be sending you a late pull request by the end of the merge window addressing remaining issues with docs build, as there are a number of warning fixes that depends on pull requests that should be happening along the merge window. The end goal is to have a clean htmldocs build on Kernel 5.10. PS. It should be noticed that Sphinx 3.0 is not currently supported, as it lacks support for C domain namespaces. Such feature, needed in order to document uAPI system calls with Sphinx 3.x, was added only on Sphinx 3.1" * tag 'docs/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (75 commits) PM / devfreq: remove a duplicated kernel-doc markup mm/doc: fix a literal block markup workqueue: fix a kernel-doc warning docs: virt: user_mode_linux_howto_v2.rst: fix a literal block markup Input: sparse-keymap: add a description for @sw rcu/tree: docs: document bkvcache new members at struct kfree_rcu_cpu nl80211: docs: add a description for s1g_cap parameter usb: docs: document altmode register/unregister functions kunit: test.h: fix a bad kernel-doc markup drivers: core: fix kernel-doc markup for dev_err_probe() docs: bio: fix a kerneldoc markup kunit: test.h: solve kernel-doc warnings block: bio: fix a warning at the kernel-doc markups docs: powerpc: syscall64-abi.rst: fix a malformed table drivers: net: hamradio: fix document location net: appletalk: Kconfig: Fix docs location dt-bindings: fix references to files converted to yaml memblock: get rid of a :c:type leftover math64.h: kernel-docs: Convert some markups into normal comments media: uAPI: buffer.rst: remove a left-over documentation ... |
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93f3d8f54a |
Tracing: Fix mismatch section of adding early trace events
- Fixes the issue of a mismatch section that was missed due to gcc inlining the offending function, while clang did not (and reported the issue). -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCX4oAlhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qkyBAQDnmsIHN1BPMdWbSFJeRYobSYFKoSzh qwcqy0prvNeFvgD9GeC7wZeJaUWCt4zRbpZhuclIq2BNqoiA/llE67zXQwQ= =W1ca -----END PGP SIGNATURE----- Merge tag 'trace-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fix from Steven Rostedt: "Fix mismatch section of adding early trace events. Fixes the issue of a mismatch section that was missed due to gcc inlining the offending function, while clang did not (and reported the issue)" * tag 'trace-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Remove __init from __trace_early_add_new_event() |
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8119c4332d |
Urgent printk fix for 5.10
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAl+JtNYACgkQUqAMR0iA lPLvaQ//Xo1gAe/ZZznTJ/hMeJQf0COAFeQ/oriqiHThu9rRxv9cfQ434JYIQaz4 f1cKhnMNrdm6/AZynjKeLwoO+Ui9N3DUJ8Wf3V0r3W1mbWXrxSEhFE9AHc8BNWFZ vzlVOrHBfPt9RqFQ12k/IUcAElAiuCmceLJ3LsTLfVF2gc07cBsZdpsZLdPcb0fz Oo8Qu9afsVWUu9X/pepgKcNO0XbfDJM0cuFpmCrziRpToLvdaTEBihI7C0ktg9WU aNZz+mEuhX9mHGt9PvsHsuDsWj3gJJypkc7ccWRdWEbl0lR1HV40tr2j2WdtYtSb GvwD34ApxneoX87mWgaSSHWNfZ5B+SDbK1XQVswRkFmZhEqoAulGYd4Uktt+3Yxy 4cGC1pzEzU5ekj6XcmUjTHxmTKRNju2qC1XTtSE0F7ozDTlMtPovqSMZAQoNNuQK +F1TBy49ikEVKB1V6xoGH/IepStO2OSee5JN6yJ+ZzLKPq9hqqtAC6CjA75NQNR0 tB9e7EKUjGkwZohnCkPpVCA1BYzqWG8+II0Z5EZilZxJiNnh5CuJ4vr0wkIfnVkI BlvkoiPHiCBPhov8UJfnrxBASsSYt/EnzKfHisqQPs3/hN9ZgMbF+wbApwosEwNx l1fswzO0mBbb2NNJWydQzG305GjoxnkQjFOewOrCii4Z0ZrfMVo= =FqTN -----END PGP SIGNATURE----- Merge tag 'printk-for-5.10-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk fix from Petr Mladek: "Prevent overflow in the new lockless ringbuffer" * tag 'printk-for-5.10-fixup' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk: ringbuffer: Wrong data pointer when appending small string |
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49dc6fbce3 |
kgdb patches for 5.10-rc1
A fairly modest set of changes for this cycle. Of particular note are an earlycon fix from Doug Anderson and my own changes to get kgdb/kdb to honour the kprobe blocklist. The later creates a safety rail that strongly encourages developers not to place breakpoints in, for example, arch specific trap handling code. Also included are a couple of small fixes and tweaks: an API update, eliminate a coverity dead code warning, improved handling of search during multi-line printk and a couple of typo corrections. Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEELzVBU1D3lWq6cKzwfOMlXTn3iKEFAl+IdyAACgkQfOMlXTn3 iKHeTw//RDAWm0IU00z9+ZlTyksTk0vePuYKwgEm8zp+XYvY0NvpgWyZ5MWd8b3K WJmsTfXMHNoPCg3464XCrQDyIhrfhxk0nrdOpgbsQMb7HdjYrnltPdG3l8W9kvVv MjMH98QOBaYAY75nd8pGoPVTOmODrhowWo6+y4me2CnJGKOOV/yHmctBhlOJhbeo TCUIDP/NmC63N8Oziteym1TZ5dhschBb/85qEb72wXaiGEZTaVC9GEFEgCqfADHX 51KxbtZoJWirbXu2aYaK5MHEb/0NWPMItiER7y8ZrTiPHMRre4N5DpCMpKpp3/qd YRtEnNnT+Ay0ijCt2FjznSsEh2ecLI0qSO4QDQz320QJCj7qgcjJ0++yEayrzz8W IxCbwkUP8X5m1srXSxvOTKfuu29wiMCqNkJA0rgjpA2u4Yn5KO0ZRmBoHtW1Sq8E MhbRTixU/vFYosjd/mKubj/f4DFrMILo+FJTqdewBUhT/Q6Vr9l660JzvwWnKKJF e1EHNYtWo4J+EkL9z++5d9PzDl0d56DcE8rfH53Dkg075Wnma3tdq2Z7WxT3M7EP K3U32BI9obu+lPHxl4FtAobCIDjP6NtmmMo3zzzA1fPtXNzAjy7qZ+Ss6POQppkn 7v+PFYdFJ8VKo3PNxMWnFhgwSDOYYxCPjCxs+bjaMBvHNVgg2Ig= =x91W -----END PGP SIGNATURE----- Merge tag 'kgdb-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux Pull kgdb updates from Daniel Thompson: "A fairly modest set of changes for this cycle. Of particular note are an earlycon fix from Doug Anderson and my own changes to get kgdb/kdb to honour the kprobe blocklist. The later creates a safety rail that strongly encourages developers not to place breakpoints in, for example, arch specific trap handling code. Also included are a couple of small fixes and tweaks: an API update, eliminate a coverity dead code warning, improved handling of search during multi-line printk and a couple of typo corrections" * tag 'kgdb-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/danielt/linux: kdb: Fix pager search for multi-line strings kernel: debug: Centralize dbg_[de]activate_sw_breakpoints kgdb: Add NOKPROBE labels on the trap handler functions kgdb: Honour the kprobe blocklist when setting breakpoints kernel/debug: Fix spelling mistake in debug_core.c kdb: Use newer api for tasklist scanning kgdb: Make "kgdbcon" work properly with "kgdb_earlycon" kdb: remove unnecessary null check of dbg_io_ops |
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c4cf498dc0 |
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "155 patches. Subsystems affected by this patch series: mm (dax, debug, thp, readahead, page-poison, util, memory-hotplug, zram, cleanups), misc, core-kernel, get_maintainer, MAINTAINERS, lib, bitops, checkpatch, binfmt, ramfs, autofs, nilfs, rapidio, panic, relay, kgdb, ubsan, romfs, and fault-injection" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (155 commits) lib, uaccess: add failure injection to usercopy functions lib, include/linux: add usercopy failure capability ROMFS: support inode blocks calculation ubsan: introduce CONFIG_UBSAN_LOCAL_BOUNDS for Clang sched.h: drop in_ubsan field when UBSAN is in trap mode scripts/gdb/tasks: add headers and improve spacing format scripts/gdb/proc: add struct mount & struct super_block addr in lx-mounts command kernel/relay.c: drop unneeded initialization panic: dump registers on panic_on_warn rapidio: fix the missed put_device() for rio_mport_add_riodev rapidio: fix error handling path nilfs2: fix some kernel-doc warnings for nilfs2 autofs: harden ioctl table ramfs: fix nommu mmap with gaps in the page cache mm: remove the now-unnecessary mmget_still_valid() hack mm/gup: take mmap_lock in get_dump_page() binfmt_elf, binfmt_elf_fdpic: use a VMA list snapshot coredump: rework elf/elf_fdpic vma_dump_size() into common helper coredump: refactor page range dumping into common helper coredump: let dump_emit() bail out on short writes ... |
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ac05b7a1b4 |
kernel/relay.c: drop unneeded initialization
The variable 'consumed' is initialized with the consumed count but immediately after that the consumed count is updated and assigned to 'consumed' again thus overwriting the previous value. So, drop the unneeded initialization. Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/20201005205727.1147-1-sudipm.mukherjee@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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3f388f2863 |
panic: dump registers on panic_on_warn
Currently we print stack and registers for ordinary warnings but we do not for panic_on_warn which looks as oversight - panic() will reboot the machine but won't print registers. This moves printing of registers and modules earlier. This does not move the stack dumping as panic() dumps it. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Rafael Aquini <aquini@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Link: https://lkml.kernel.org/r/20200804095054.68724-1-aik@ozlabs.ru Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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b7621ebf8a |
kernel: acct.c: fix some kernel-doc nits
Fix kernel-doc notation to use the documented Returns: syntax and place the function description for acct_process() on the first line where it should be. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Link: https://lkml.kernel.org/r/b4c33e5d-98e8-0c47-77b6-ac1859f94d7f@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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7b7b8a2c95 |
kernel/: fix repeated words in comments
Fix multiple occurrences of duplicated words in kernel/. Fix one typo/spello on the same line as a duplicate word. Change one instance of "the the" to "that the". Otherwise just drop one of the repeated words. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/98202fa6-8919-ef63-9efe-c0fad5ca7af1@infradead.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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15ec0fcff6 |
kernel/sys.c: replace do_brk with do_brk_flags in comment of prctl_set_mm_map()
Replace do_brk with do_brk_flags in comment of prctl_set_mm_map(), since
do_brk was removed in following commit.
Fixes:
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b296a6d533 |
kernel.h: split out min()/max() et al. helpers
kernel.h is being used as a dump for all kinds of stuff for a long time. Here is the attempt to start cleaning it up by splitting out min()/max() et al. helpers. At the same time convert users in header and lib folder to use new header. Though for time being include new header back to kernel.h to avoid twisted indirected includes for other existing users. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Joe Perches <joe@perches.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20200910164152.GA1891694@smile.fi.intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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73eb7f9a4f |
mm: use helper function put_write_access()
In commit
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cb8e3c8b4f |
kernel/resource: make iomem_resource implicit in release_mem_region_adjustable()
"mem" in the name already indicates the root, similar to release_mem_region() and devm_request_mem_region(). Make it implicit. The only single caller always passes iomem_resource, other parents are not applicable. Suggested-by: Wei Yang <richard.weiyang@linux.alibaba.com> Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Kees Cook <keescook@chromium.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Baoquan He <bhe@redhat.com> Link: https://lkml.kernel.org/r/20200916073041.10355-1-david@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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9ca6551ee2 |
mm/memory_hotplug: MEMHP_MERGE_RESOURCE to specify merging of System RAM resources
Some add_memory*() users add memory in small, contiguous memory blocks. Examples include virtio-mem, hyper-v balloon, and the XEN balloon. This can quickly result in a lot of memory resources, whereby the actual resource boundaries are not of interest (e.g., it might be relevant for DIMMs, exposed via /proc/iomem to user space). We really want to merge added resources in this scenario where possible. Let's provide a flag (MEMHP_MERGE_RESOURCE) to specify that a resource either created within add_memory*() or passed via add_memory_resource() shall be marked mergeable and merged with applicable siblings. To implement that, we need a kernel/resource interface to mark selected System RAM resources mergeable (IORESOURCE_SYSRAM_MERGEABLE) and trigger merging. Note: We really want to merge after the whole operation succeeded, not directly when adding a resource to the resource tree (it would break add_memory_resource() and require splitting resources again when the operation failed - e.g., due to -ENOMEM). Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Kees Cook <keescook@chromium.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Wei Liu <wei.liu@kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Roger Pau Monné <roger.pau@citrix.com> Cc: Julien Grall <julien@xen.org> Cc: Baoquan He <bhe@redhat.com> Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Anton Blanchard <anton@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Leonardo Bras <leobras.c@gmail.com> Cc: Libor Pechacek <lpechacek@suse.cz> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Nathan Lynch <nathanl@linux.ibm.com> Cc: "Oliver O'Halloran" <oohall@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pingfan Liu <kernelfans@gmail.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Link: https://lkml.kernel.org/r/20200911103459.10306-6-david@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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7cf603d17d |
kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED
IORESOURCE_MEM_DRIVER_MANAGED currently uses an unused PnP bit, which is always set to 0 by hardware. This is far from beautiful (and confusing), and the bit only applies to SYSRAM. So let's move it out of the bus-specific (PnP) defined bits. We'll add another SYSRAM specific bit soon. If we ever need more bits for other purposes, we can steal some from "desc", or reshuffle/regroup what we have. Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Kees Cook <keescook@chromium.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Anton Blanchard <anton@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Julien Grall <julien@xen.org> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Len Brown <lenb@kernel.org> Cc: Leonardo Bras <leobras.c@gmail.com> Cc: Libor Pechacek <lpechacek@suse.cz> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Nathan Lynch <nathanl@linux.ibm.com> Cc: "Oliver O'Halloran" <oohall@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pingfan Liu <kernelfans@gmail.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Roger Pau Monné <roger.pau@citrix.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Wei Liu <wei.liu@kernel.org> Link: https://lkml.kernel.org/r/20200911103459.10306-3-david@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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ec62d04e3f |
kernel/resource: make release_mem_region_adjustable() never fail
Patch series "selective merging of system ram resources", v4. Some add_memory*() users add memory in small, contiguous memory blocks. Examples include virtio-mem, hyper-v balloon, and the XEN balloon. This can quickly result in a lot of memory resources, whereby the actual resource boundaries are not of interest (e.g., it might be relevant for DIMMs, exposed via /proc/iomem to user space). We really want to merge added resources in this scenario where possible. Resources are effectively stored in a list-based tree. Having a lot of resources not only wastes memory, it also makes traversing that tree more expensive, and makes /proc/iomem explode in size (e.g., requiring kexec-tools to manually merge resources when creating a kdump header. The current kexec-tools resource count limit does not allow for more than ~100GB of memory with a memory block size of 128MB on x86-64). Let's allow to selectively merge system ram resources by specifying a new flag for add_memory*(). Patch #5 contains a /proc/iomem example. Only tested with virtio-mem. This patch (of 8): Let's make sure splitting a resource on memory hotunplug will never fail. This will become more relevant once we merge selected System RAM resources - then, we'll trigger that case more often on memory hotunplug. In general, this function is already unlikely to fail. When we remove memory, we free up quite a lot of metadata (memmap, page tables, memory block device, etc.). The only reason it could really fail would be when injecting allocation errors. All other error cases inside release_mem_region_adjustable() seem to be sanity checks if the function would be abused in different context - let's add WARN_ON_ONCE() in these cases so we can catch them. [natechancellor@gmail.com: fix use of ternary condition in release_mem_region_adjustable] Link: https://lkml.kernel.org/r/20200922060748.2452056-1-natechancellor@gmail.com Link: https://github.com/ClangBuiltLinux/linux/issues/1159 Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Kees Cook <keescook@chromium.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Wei Yang <richardw.yang@linux.intel.com> Cc: Anton Blanchard <anton@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Julien Grall <julien@xen.org> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Len Brown <lenb@kernel.org> Cc: Leonardo Bras <leobras.c@gmail.com> Cc: Libor Pechacek <lpechacek@suse.cz> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Nathan Lynch <nathanl@linux.ibm.com> Cc: "Oliver O'Halloran" <oohall@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Pingfan Liu <kernelfans@gmail.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Roger Pau Monn <roger.pau@citrix.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Wei Liu <wei.liu@kernel.org> Link: https://lkml.kernel.org/r/20200911103459.10306-2-david@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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ce66f61364 |
tracing: Remove __init from __trace_early_add_new_event()
The commit
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3eb6b31bfb |
workqueue: fix a kernel-doc warning
As warned by Sphinx: ./Documentation/core-api/workqueue:400: ./kernel/workqueue.c:1218: WARNING: Unexpected indentation. the return code table is currently not recognized, as it lacks markups. Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
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9ff9b0d392 |
networking changes for the 5.10 merge window
Add redirect_neigh() BPF packet redirect helper, allowing to limit stack traversal in common container configs and improving TCP back-pressure. Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain. Expand netlink policy support and improve policy export to user space. (Ge)netlink core performs request validation according to declared policies. Expand the expressiveness of those policies (min/max length and bitmasks). Allow dumping policies for particular commands. This is used for feature discovery by user space (instead of kernel version parsing or trial and error). Support IGMPv3/MLDv2 multicast listener discovery protocols in bridge. Allow more than 255 IPv4 multicast interfaces. Add support for Type of Service (ToS) reflection in SYN/SYN-ACK packets of TCPv6. In Multi-patch TCP (MPTCP) support concurrent transmission of data on multiple subflows in a load balancing scenario. Enhance advertising addresses via the RM_ADDR/ADD_ADDR options. Support SMC-Dv2 version of SMC, which enables multi-subnet deployments. Allow more calls to same peer in RxRPC. Support two new Controller Area Network (CAN) protocols - CAN-FD and ISO 15765-2:2016. Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit kernel problem. Add TC actions for implementing MPLS L2 VPNs. Improve nexthop code - e.g. handle various corner cases when nexthop objects are removed from groups better, skip unnecessary notifications and make it easier to offload nexthops into HW by converting to a blocking notifier. Support adding and consuming TCP header options by BPF programs, opening the doors for easy experimental and deployment-specific TCP option use. Reorganize TCP congestion control (CC) initialization to simplify life of TCP CC implemented in BPF. Add support for shipping BPF programs with the kernel and loading them early on boot via the User Mode Driver mechanism, hence reusing all the user space infra we have. Support sleepable BPF programs, initially targeting LSM and tracing. Add bpf_d_path() helper for returning full path for given 'struct path'. Make bpf_tail_call compatible with bpf-to-bpf calls. Allow BPF programs to call map_update_elem on sockmaps. Add BPF Type Format (BTF) support for type and enum discovery, as well as support for using BTF within the kernel itself (current use is for pretty printing structures). Support listing and getting information about bpf_links via the bpf syscall. Enhance kernel interfaces around NIC firmware update. Allow specifying overwrite mask to control if settings etc. are reset during update; report expected max time operation may take to users; support firmware activation without machine reboot incl. limits of how much impact reset may have (e.g. dropping link or not). Extend ethtool configuration interface to report IEEE-standard counters, to limit the need for per-vendor logic in user space. Adopt or extend devlink use for debug, monitoring, fw update in many drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw, mv88e6xxx, dpaa2-eth). In mlxsw expose critical and emergency SFP module temperature alarms. Refactor port buffer handling to make the defaults more suitable and support setting these values explicitly via the DCBNL interface. Add XDP support for Intel's igb driver. Support offloading TC flower classification and filtering rules to mscc_ocelot switches. Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as fixed interval period pulse generator and one-step timestamping in dpaa-eth. Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3) offload. Add Lynx PHY/PCS MDIO module, and convert various drivers which have this HW to use it. Convert mvpp2 to split PCS. Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as 7-port Mediatek MT7531 IP. Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver, and wcn3680 support in wcn36xx. Improve performance for packets which don't require much offloads on recent Mellanox NICs by 20% by making multiple packets share a descriptor entry. Move chelsio inline crypto drivers (for TLS and IPsec) from the crypto subtree to drivers/net. Move MDIO drivers out of the phy directory. Clean up a lot of W=1 warnings, reportedly the actively developed subsections of networking drivers should now build W=1 warning free. Make sure drivers don't use in_interrupt() to dynamically adapt their code. Convert tasklets to use new tasklet_setup API (sadly this conversion is not yet complete). Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAl+ItRwACgkQMUZtbf5S IrtTMg//UxpdR/MirT1DatBU0K/UGAZY82hV7F/UC8tPgjfHZeHvWlDFxfi3YP81 PtPKbhRZ7DhwBXefUp6nY3UdvjftrJK2lJm8prJUPSsZRye8Wlcb7y65q7/P2y2U Efucyopg6RUrmrM0DUsIGYGJgylQLHnMYUl/keCsD4t5Bp4ksyi9R2t5eitGoWzh r3QGdbSa0AuWx4iu0i+tqp6Tj0ekMBMXLVb35dtU1t0joj2KTNEnSgABN3prOa8E iWYf2erOau68Ogp3yU3miCy0ZU4p/7qGHTtzbcp677692P/ekak6+zmfHLT9/Pjy 2Stq2z6GoKuVxdktr91D9pA3jxG4LxSJmr0TImcGnXbvkMP3Ez3g9RrpV5fn8j6F mZCH8TKZAoD5aJrAJAMkhZmLYE1pvDa7KolSk8WogXrbCnTEb5Nv8FHTS1Qnk3yl wSKXuvutFVNLMEHCnWQLtODbTST9DI/aOi6EctPpuOA/ZyL1v3pl+gfp37S+LUTe owMnT/7TdvKaTD0+gIyU53M6rAWTtr5YyRQorX9awIu/4Ha0F0gYD7BJZQUGtegp HzKt59NiSrFdbSH7UdyemdBF4LuCgIhS7rgfeoUXMXmuPHq7eHXyHZt5dzPPa/xP 81P0MAvdpFVwg8ij2yp2sHS7sISIRKq17fd1tIewUabxQbjXqPc= =bc1U -----END PGP SIGNATURE----- Merge tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: - Add redirect_neigh() BPF packet redirect helper, allowing to limit stack traversal in common container configs and improving TCP back-pressure. Daniel reports ~10Gbps => ~15Gbps single stream TCP performance gain. - Expand netlink policy support and improve policy export to user space. (Ge)netlink core performs request validation according to declared policies. Expand the expressiveness of those policies (min/max length and bitmasks). Allow dumping policies for particular commands. This is used for feature discovery by user space (instead of kernel version parsing or trial and error). - Support IGMPv3/MLDv2 multicast listener discovery protocols in bridge. - Allow more than 255 IPv4 multicast interfaces. - Add support for Type of Service (ToS) reflection in SYN/SYN-ACK packets of TCPv6. - In Multi-patch TCP (MPTCP) support concurrent transmission of data on multiple subflows in a load balancing scenario. Enhance advertising addresses via the RM_ADDR/ADD_ADDR options. - Support SMC-Dv2 version of SMC, which enables multi-subnet deployments. - Allow more calls to same peer in RxRPC. - Support two new Controller Area Network (CAN) protocols - CAN-FD and ISO 15765-2:2016. - Add xfrm/IPsec compat layer, solving the 32bit user space on 64bit kernel problem. - Add TC actions for implementing MPLS L2 VPNs. - Improve nexthop code - e.g. handle various corner cases when nexthop objects are removed from groups better, skip unnecessary notifications and make it easier to offload nexthops into HW by converting to a blocking notifier. - Support adding and consuming TCP header options by BPF programs, opening the doors for easy experimental and deployment-specific TCP option use. - Reorganize TCP congestion control (CC) initialization to simplify life of TCP CC implemented in BPF. - Add support for shipping BPF programs with the kernel and loading them early on boot via the User Mode Driver mechanism, hence reusing all the user space infra we have. - Support sleepable BPF programs, initially targeting LSM and tracing. - Add bpf_d_path() helper for returning full path for given 'struct path'. - Make bpf_tail_call compatible with bpf-to-bpf calls. - Allow BPF programs to call map_update_elem on sockmaps. - Add BPF Type Format (BTF) support for type and enum discovery, as well as support for using BTF within the kernel itself (current use is for pretty printing structures). - Support listing and getting information about bpf_links via the bpf syscall. - Enhance kernel interfaces around NIC firmware update. Allow specifying overwrite mask to control if settings etc. are reset during update; report expected max time operation may take to users; support firmware activation without machine reboot incl. limits of how much impact reset may have (e.g. dropping link or not). - Extend ethtool configuration interface to report IEEE-standard counters, to limit the need for per-vendor logic in user space. - Adopt or extend devlink use for debug, monitoring, fw update in many drivers (dsa loop, ice, ionic, sja1105, qed, mlxsw, mv88e6xxx, dpaa2-eth). - In mlxsw expose critical and emergency SFP module temperature alarms. Refactor port buffer handling to make the defaults more suitable and support setting these values explicitly via the DCBNL interface. - Add XDP support for Intel's igb driver. - Support offloading TC flower classification and filtering rules to mscc_ocelot switches. - Add PTP support for Marvell Octeontx2 and PP2.2 hardware, as well as fixed interval period pulse generator and one-step timestamping in dpaa-eth. - Add support for various auth offloads in WiFi APs, e.g. SAE (WPA3) offload. - Add Lynx PHY/PCS MDIO module, and convert various drivers which have this HW to use it. Convert mvpp2 to split PCS. - Support Marvell Prestera 98DX3255 24-port switch ASICs, as well as 7-port Mediatek MT7531 IP. - Add initial support for QCA6390 and IPQ6018 in ath11k WiFi driver, and wcn3680 support in wcn36xx. - Improve performance for packets which don't require much offloads on recent Mellanox NICs by 20% by making multiple packets share a descriptor entry. - Move chelsio inline crypto drivers (for TLS and IPsec) from the crypto subtree to drivers/net. Move MDIO drivers out of the phy directory. - Clean up a lot of W=1 warnings, reportedly the actively developed subsections of networking drivers should now build W=1 warning free. - Make sure drivers don't use in_interrupt() to dynamically adapt their code. Convert tasklets to use new tasklet_setup API (sadly this conversion is not yet complete). * tag 'net-next-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2583 commits) Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH" net, sockmap: Don't call bpf_prog_put() on NULL pointer bpf, selftest: Fix flaky tcp_hdr_options test when adding addr to lo bpf, sockmap: Add locking annotations to iterator netfilter: nftables: allow re-computing sctp CRC-32C in 'payload' statements net: fix pos incrementment in ipv6_route_seq_next net/smc: fix invalid return code in smcd_new_buf_create() net/smc: fix valid DMBE buffer sizes net/smc: fix use-after-free of delayed events bpfilter: Fix build error with CONFIG_BPFILTER_UMH cxgb4/ch_ipsec: Replace the module name to ch_ipsec from chcr net: sched: Fix suspicious RCU usage while accessing tcf_tunnel_info bpf: Fix register equivalence tracking. rxrpc: Fix loss of final ack on shutdown rxrpc: Fix bundle counting for exclusive connections netfilter: restore NF_INET_NUMHOOKS ibmveth: Identify ingress large send packets. ibmveth: Switch order of ibmveth_helper calls. cxgb4: handle 4-tuple PEDIT to NAT mode translation selftests: Add VRF route leaking tests ... |
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fefa636d81 |
Updates for tracing and bootconfig:
- Add support for "bool" type in synthetic events - Add per instance tracing for bootconfig - Support perf-style return probe ("SYMBOL%return") in kprobes and uprobes - Allow for kprobes to be enabled earlier in boot up - Added tracepoint helper function to allow testing if tracepoints are enabled in headers - Synthetic events can now have dynamic strings (variable length) - Various fixes and cleanups -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCX4iMDRQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qrMPAP0UAfOeQcYxBAw9y8oX7oJnBBylLFTR CICOVEhBYC/xIQD/edVPEUt77ozM/Bplwv8BiO4QxFjgZFqtpZI8mskIfAo= =sbny -----END PGP SIGNATURE----- Merge tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "Updates for tracing and bootconfig: - Add support for "bool" type in synthetic events - Add per instance tracing for bootconfig - Support perf-style return probe ("SYMBOL%return") in kprobes and uprobes - Allow for kprobes to be enabled earlier in boot up - Added tracepoint helper function to allow testing if tracepoints are enabled in headers - Synthetic events can now have dynamic strings (variable length) - Various fixes and cleanups" * tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (58 commits) tracing: support "bool" type in synthetic trace events selftests/ftrace: Add test case for synthetic event syntax errors tracing: Handle synthetic event array field type checking correctly selftests/ftrace: Change synthetic event name for inter-event-combined test tracing: Add synthetic event error logging tracing: Check that the synthetic event and field names are legal tracing: Move is_good_name() from trace_probe.h to trace.h tracing: Don't show dynamic string internals in synthetic event description tracing: Fix some typos in comments tracing/boot: Add ftrace.instance.*.alloc_snapshot option tracing: Fix race in trace_open and buffer resize call tracing: Check return value of __create_val_fields() before using its result tracing: Fix synthetic print fmt check for use of __get_str() tracing: Remove a pointless assignment ftrace: ftrace_global_list is renamed to ftrace_ops_list ftrace: Format variable declarations of ftrace_allocate_records ftrace: Simplify the calculation of page number for ftrace_page->records ftrace: Simplify the dyn_ftrace->flags macro ftrace: Simplify the hash calculation ftrace: Use fls() to get the bits for dup_hash() ... |
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bbf6259903 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial updates from Jiri Kosina: "The latest advances in computer science from the trivial queue" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: xtensa: fix Kconfig typo spelling.txt: Remove some duplicate entries mtd: rawnand: oxnas: cleanup/simplify code selftests: vm: add fragment CONFIG_GUP_BENCHMARK perf: Fix opt help text for --no-bpf-event HID: logitech-dj: Fix spelling in comment bootconfig: Fix kernel message mentioning CONFIG_BOOT_CONFIG MAINTAINERS: rectify MMP SUPPORT after moving cputype.h scif: Fix spelling of EACCES printk: fix global comment lib/bitmap.c: fix spello fs: Fix missing 'bit' in comment |
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5a32c3413d |
dma-mapping updates for 5.10
- rework the non-coherent DMA allocator - move private definitions out of <linux/dma-mapping.h> - lower CMA_ALIGNMENT (Paul Cercueil) - remove the omap1 dma address translation in favor of the common code - make dma-direct aware of multiple dma offset ranges (Jim Quinlan) - support per-node DMA CMA areas (Barry Song) - increase the default seg boundary limit (Nicolin Chen) - misc fixes (Robin Murphy, Thomas Tai, Xu Wang) - various cleanups -----BEGIN PGP SIGNATURE----- iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAl+IiPwLHGhjaEBsc3Qu ZGUACgkQD55TZVIEUYPKEQ//TM8vxjucnRl/pklpMin49dJorwiVvROLhQqLmdxw 286ZKpVzYYAPc7LnNqwIBugnFZiXuHu8xPKQkIiOa2OtNDTwhKNoBxOAmOJaV6DD 8JfEtZYeX5mKJ/Nqd2iSkIqOvCwZ9Wzii+aytJ2U88wezQr1fnyF4X49MegETEey FHWreSaRWZKa0MMRu9AQ0QxmoNTHAQUNaPc0PeqEtPULybfkGOGw4/ghSB7WcKrA gtKTuooNOSpVEHkTas2TMpcBp6lxtOjFqKzVN0ml+/nqq5NeTSDx91VOCX/6Cj76 mXIg+s7fbACTk/BmkkwAkd0QEw4fo4tyD6Bep/5QNhvEoAriTuSRbhvLdOwFz0EF vhkF0Rer6umdhSK7nPd7SBqn8kAnP4vBbdmB68+nc3lmkqysLyE4VkgkdH/IYYQI 6TJ0oilXWFmU6DT5Rm4FBqCvfcEfU2dUIHJr5wZHqrF2kLzoZ+mpg42fADoG4GuI D/oOsz7soeaRe3eYfWybC0omGR6YYPozZJ9lsfftcElmwSsFrmPsbO1DM5IBkj1B gItmEbOB9ZK3RhIK55T/3u1UWY3Uc/RVr+kchWvADGrWnRQnW0kxYIqDgiOytLFi JZNH8uHpJIwzoJAv6XXSPyEUBwXTG+zK37Ce769HGbUEaUrE71MxBbQAQsK8mDpg 7fM= =Bkf/ -----END PGP SIGNATURE----- Merge tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping updates from Christoph Hellwig: - rework the non-coherent DMA allocator - move private definitions out of <linux/dma-mapping.h> - lower CMA_ALIGNMENT (Paul Cercueil) - remove the omap1 dma address translation in favor of the common code - make dma-direct aware of multiple dma offset ranges (Jim Quinlan) - support per-node DMA CMA areas (Barry Song) - increase the default seg boundary limit (Nicolin Chen) - misc fixes (Robin Murphy, Thomas Tai, Xu Wang) - various cleanups * tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping: (63 commits) ARM/ixp4xx: add a missing include of dma-map-ops.h dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling dma-direct: factor out a dma_direct_alloc_from_pool helper dma-direct check for highmem pages in dma_direct_alloc_pages dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h> dma-mapping: move large parts of <linux/dma-direct.h> to kernel/dma dma-mapping: move dma-debug.h to kernel/dma/ dma-mapping: remove <asm/dma-contiguous.h> dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h> dma-contiguous: remove dma_contiguous_set_default dma-contiguous: remove dev_set_cma_area dma-contiguous: remove dma_declare_contiguous dma-mapping: split <linux/dma-mapping.h> cma: decrease CMA_ALIGNMENT lower limit to 2 firewire-ohci: use dma_alloc_pages dma-iommu: implement ->alloc_noncoherent dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods dma-mapping: add a new dma_alloc_pages API dma-mapping: remove dma_cache_sync 53c700: convert to dma_alloc_noncoherent ... |
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151a535171 |
genirq: Let GENERIC_IRQ_IPI select IRQ_DOMAIN_HIERARCHY
kernel/irq/ipi.c otherwise fails to compile if nothing else
selects it.
Fixes:
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93b694d096 |
drm next for 5.10-rc1
New driver: Cadence MHDP8546 DisplayPort bridge driver core: - cross-driver scatterlist cleanups - devm_drm conversions - remove drm_dev_init - devm_drm_dev_alloc conversion ttm: - lots of refactoring and cleanups bridges: - chained bridge support in more drivers panel: - misc new panels scheduler: - cleanup priority levels displayport: - refactor i915 code into helpers for nouveau i915: - split into display and GT trees - WW locking refactoring in GEM - execbuf2 extension mechanism - syncobj timeline support - GEN 12 HOBL display powersaving - Rocket Lake display additions - Disable FBC on Tigerlake - Tigerlake Type-C + DP improvements - Hotplug interrupt refactoring amdgpu: - Sienna Cichlid updates - Navy Flounder updates - DCE6 (SI) support for DC - Plane rotation enabled - TMZ state info ioctl - PCIe DPC recovery support - DC interrupt handling refactor - OLED panel fixes amdkfd: - add SMI events for thermal throttling - SMI interface events ioctl update - process eviction counters radeon: - move to dma_ for allocations - expose sclk via sysfs msm: - DSI support for sm8150/sm8250 - per-process GPU pagetable support - Displayport support mediatek: - move HDMI phy driver to PHY - convert mtk-dpi to bridge API - disable mt2701 tmds tegra: - bridge support exynos: - misc cleanups vc4: - dual display cleanups ast: - cleanups gma500: - conversion to GPIOd API hisilicon: - misc reworks ingenic: - clock handling and format improvements mcde: - DSI support mgag200: - desktop g200 support mxsfb: - i.MX7 + i.MX8M - alpha plane support panfrost: - devfreq support - amlogic SoC support ps8640: - EDID from eDP retrieval tidss: - AM65xx YUV workaround virtio: - virtio-gpu exported resources rcar-du: - R8A7742, R8A774E1 and R8A77961 support - YUV planar format fixes - non-visible plane handling - VSP device reference count fix - Kconfig fix to avoid displaying disabled options in .config -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJfh579AAoJEAx081l5xIa+GqoP/0amz+ZN7y/L7+f32CRinJ7/ 3e4xjXNDmtWG4Whe/WKjlYmbAcvSdWV/4HYpurW2BFJnOAB/5lIqYcS/PyqErPzA w4EpRoJ+ZdFgmlDH0vdsDwPLT/HFmhUN9AopNkoZpbSMxrManSj5QgmePXyiKReP Q+ZAK5UW5AdOVY4bgXUSEkVq2eilCLXf+bSBR/LrVQuNgu7GULX8SIy/Y1CuMtv8 LgzzjLKfIZaIWC+F/RU7BxJ7YnrVq7z7yXnUx8j2416+k/Wwe+BeSUCSZstT7q9G UkX8jWfR7ZKqhwP+UQeSwDbHkALz7lv88nyjQdxJZ3SrXRe4hy14YjxnR4maeNAj 3TAYSdcAMWyRHqeEZIZ7Hj5sQtTq5OZAoIjxzH3vpVdAnnAkcWoF77pqxV8XPqTC nw40DihAxQOshGwMkjd5DqkEwnMv43Hs1WTVYu9dPTOfOdqPNt+Vqp7Xl9Z46+kV k6PDcx60T9ayDW1QZ6MoIXHta9E7ixzu7gYBL3vP4LuporY0uNG3bzF3CMvof1BK sHYcYTdZkqbTD2d6rHV+TbpPQXgTtlej9qVlQM4SeX37Xtc7LxCYpnpUHKz2S/fK 1vyeGPgdytHblwlxwZOPZ4R2I/HTfnITdr4kMcJHhxAsEewfW1Rd4+stQqVJ2Mph Vz+CFP2BngivGFz5vuky =4H8J -----END PGP SIGNATURE----- Merge tag 'drm-next-2020-10-15' of git://anongit.freedesktop.org/drm/drm Pull drm updates from Dave Airlie: "Not a major amount of change, the i915 trees got split into display and gt trees to better facilitate higher level review, and there's a major refactoring of i915 GEM locking to use more core kernel concepts (like ww-mutexes). msm gets per-process pagetables, older AMD SI cards get DC support, nouveau got a bump in displayport support with common code extraction from i915. Outside of drm this contains a couple of patches for hexint moduleparams which you've acked, and a virtio common code tree that you should also get via it's regular path. New driver: - Cadence MHDP8546 DisplayPort bridge driver core: - cross-driver scatterlist cleanups - devm_drm conversions - remove drm_dev_init - devm_drm_dev_alloc conversion ttm: - lots of refactoring and cleanups bridges: - chained bridge support in more drivers panel: - misc new panels scheduler: - cleanup priority levels displayport: - refactor i915 code into helpers for nouveau i915: - split into display and GT trees - WW locking refactoring in GEM - execbuf2 extension mechanism - syncobj timeline support - GEN 12 HOBL display powersaving - Rocket Lake display additions - Disable FBC on Tigerlake - Tigerlake Type-C + DP improvements - Hotplug interrupt refactoring amdgpu: - Sienna Cichlid updates - Navy Flounder updates - DCE6 (SI) support for DC - Plane rotation enabled - TMZ state info ioctl - PCIe DPC recovery support - DC interrupt handling refactor - OLED panel fixes amdkfd: - add SMI events for thermal throttling - SMI interface events ioctl update - process eviction counters radeon: - move to dma_ for allocations - expose sclk via sysfs msm: - DSI support for sm8150/sm8250 - per-process GPU pagetable support - Displayport support mediatek: - move HDMI phy driver to PHY - convert mtk-dpi to bridge API - disable mt2701 tmds tegra: - bridge support exynos: - misc cleanups vc4: - dual display cleanups ast: - cleanups gma500: - conversion to GPIOd API hisilicon: - misc reworks ingenic: - clock handling and format improvements mcde: - DSI support mgag200: - desktop g200 support mxsfb: - i.MX7 + i.MX8M - alpha plane support panfrost: - devfreq support - amlogic SoC support ps8640: - EDID from eDP retrieval tidss: - AM65xx YUV workaround virtio: - virtio-gpu exported resources rcar-du: - R8A7742, R8A774E1 and R8A77961 support - YUV planar format fixes - non-visible plane handling - VSP device reference count fix - Kconfig fix to avoid displaying disabled options in .config" * tag 'drm-next-2020-10-15' of git://anongit.freedesktop.org/drm/drm: (1494 commits) drm/ingenic: Fix bad revert drm/amdgpu: Fix invalid number of character '{' in amdgpu_acpi_init drm/amdgpu: Remove warning for virtual_display drm/amdgpu: kfd_initialized can be static drm/amd/pm: setup APU dpm clock table in SMU HW initialization drm/amdgpu: prevent spurious warning drm/amdgpu/swsmu: fix ARC build errors drm/amd/display: Fix OPTC_DATA_FORMAT programming drm/amd/display: Don't allow pstate if no support in blank drm/panfrost: increase readl_relaxed_poll_timeout values MAINTAINERS: Update entry for st7703 driver after the rename Revert "gpu/drm: ingenic: Add option to mmap GEM buffers cached" drm/amd/display: HDMI remote sink need mode validation for Linux drm/amd/display: Change to correct unit on audio rate drm/amd/display: Avoid set zero in the requested clk drm/amdgpu: align frag_end to covered address space drm/amdgpu: fix NULL pointer dereference for Renoir drm/vmwgfx: fix regression in thp code due to ttm init refactor. drm/amdgpu/swsmu: add interrupt work handler for smu11 parts drm/amdgpu/swsmu: add interrupt work function ... |
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726eb70e0d |
Char/Misc driver patches for 5.10-rc1
Here is the big set of char, misc, and other assorted driver subsystem patches for 5.10-rc1. There's a lot of different things in here, all over the drivers/ directory. Some summaries: - soundwire driver updates - habanalabs driver updates - extcon driver updates - nitro_enclaves new driver - fsl-mc driver and core updates - mhi core and bus updates - nvmem driver updates - eeprom driver updates - binder driver updates and fixes - vbox minor bugfixes - fsi driver updates - w1 driver updates - coresight driver updates - interconnect driver updates - misc driver updates - other minor driver updates All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCX4g8YQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yngKgCeNpArCP/9vQJRK9upnDm8ZLunSCUAn1wUT/2A /bTQ42c/WRQ+LU828GSM =6sO2 -----END PGP SIGNATURE----- Merge tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big set of char, misc, and other assorted driver subsystem patches for 5.10-rc1. There's a lot of different things in here, all over the drivers/ directory. Some summaries: - soundwire driver updates - habanalabs driver updates - extcon driver updates - nitro_enclaves new driver - fsl-mc driver and core updates - mhi core and bus updates - nvmem driver updates - eeprom driver updates - binder driver updates and fixes - vbox minor bugfixes - fsi driver updates - w1 driver updates - coresight driver updates - interconnect driver updates - misc driver updates - other minor driver updates All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (396 commits) binder: fix UAF when releasing todo list docs: w1: w1_therm: Fix broken xref, mistakes, clarify text misc: Kconfig: fix a HISI_HIKEY_USB dependency LSM: Fix type of id parameter in kernel_post_load_data prototype misc: Kconfig: add a new dependency for HISI_HIKEY_USB firmware_loader: fix a kernel-doc markup w1: w1_therm: make w1_poll_completion static binder: simplify the return expression of binder_mmap test_firmware: Test partial read support firmware: Add request_partial_firmware_into_buf() firmware: Store opt_flags in fw_priv fs/kernel_file_read: Add "offset" arg for partial reads IMA: Add support for file reads without contents LSM: Add "contents" flag to kernel_read_file hook module: Call security_kernel_post_load_data() firmware_loader: Use security_post_load_data() LSM: Introduce kernel_post_load_data() hook fs/kernel_read_file: Add file_size output argument fs/kernel_read_file: Switch buffer size arg to size_t fs/kernel_read_file: Remove redundant size argument ... |
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6107742d15 |
tracing: support "bool" type in synthetic trace events
It's common [1] to define tracepoint fields as "bool" when they contain a true / false value. Currently, defining a synthetic event with a "bool" field yields EINVAL. It's possible to work around this by using e.g. u8 (assuming sizeof(bool) is 1, and bool is unsigned; if either of these properties don't match, you get EINVAL [2]). Supporting "bool" explicitly makes hooking this up easier and more portable for userspace. [1]: grep -r "bool" include/trace/events/ [2]: check_synth_field() in kernel/trace/trace_events_hist.c Link: https://lkml.kernel.org/r/20201009220524.485102-2-axelrasmussen@google.com Acked-by: Michel Lespinasse <walken@google.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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10819e2579 |
tracing: Handle synthetic event array field type checking correctly
Since synthetic event array types are derived from the field name,
there may be a semicolon at the end of the type which should be
stripped off.
If there are more characters following that, normal type string
checking will result in an invalid type.
Without this patch, you can end up with an invalid field type string
that gets displayed in both the synthetic event description and the
event format:
Before:
# echo 'myevent char str[16]; int v' >> synthetic_events
# cat synthetic_events
myevent char[16]; str; int v
name: myevent
ID: 1936
format:
field:unsigned short common_type; offset:0; size:2; signed:0;
field:unsigned char common_flags; offset:2; size:1; signed:0;
field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
field:int common_pid; offset:4; size:4; signed:1;
field:char str[16];; offset:8; size:16; signed:1;
field:int v; offset:40; size:4; signed:1;
print fmt: "str=%s, v=%d", REC->str, REC->v
After:
# echo 'myevent char str[16]; int v' >> synthetic_events
# cat synthetic_events
myevent char[16] str; int v
# cat events/synthetic/myevent/format
name: myevent
ID: 1936
format:
field:unsigned short common_type; offset:0; size:2; signed:0;
field:unsigned char common_flags; offset:2; size:1; signed:0;
field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
field:int common_pid; offset:4; size:4; signed:1;
field:char str[16]; offset:8; size:16; signed:1;
field:int v; offset:40; size:4; signed:1;
print fmt: "str=%s, v=%d", REC->str, REC->v
Link: https://lkml.kernel.org/r/6587663b56c2d45ab9d8c8472a2110713cdec97d.1602598160.git.zanussi@kernel.org
[ <rostedt@goodmis.org>: wrote parse_synth_field() snippet. ]
Fixes:
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d4d704637d |
tracing: Add synthetic event error logging
Add support for synthetic event error logging, which entails adding a logging function for it, a way to save the synthetic event command, and a set of specific synthetic event parse error strings and handling. Link: https://lkml.kernel.org/r/ed099c66df13b40cfc633aaeb17f66c37a923066.1602598160.git.zanussi@kernel.org [ <rostedt@goodmis.org>: wrote save_cmdstr() seq_buf implementation. ] Tested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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9bbb33291f |
tracing: Check that the synthetic event and field names are legal
Call the is_good_name() function used by probe events to make sure
synthetic event and field names don't contain illegal characters and
cause unexpected parsing of synthetic event commands.
Link: https://lkml.kernel.org/r/c4d4bb59d3ac39bcbd70fba0cf837d6b1cedb015.1602598160.git.zanussi@kernel.org
Fixes:
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42d120e2dd |
tracing: Move is_good_name() from trace_probe.h to trace.h
is_good_name() is useful for other trace infrastructure, such as synthetic events, so make it available via trace.h. Link: https://lkml.kernel.org/r/cc6d6a2d7da6957fcbe1e2922e76d18d2bb459b4.1602598160.git.zanussi@kernel.org Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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7d27adf575 |
tracing: Don't show dynamic string internals in synthetic event description
For synthetic event dynamic fields, the type contains "__data_loc", which is basically an internal part of the type which is only meant to be displayed in the format, not in the event description itself, which is confusing to users since they can't use __data_loc on the command-line to define an event field, which printing it would lead them to believe. So filter it out from the description, while leaving it in the type. Link: https://lkml.kernel.org/r/b3b7baf7813298a5ede4ff02e2e837b91c05a724.1602598160.git.zanussi@kernel.org Reported-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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499f7bb085 |
tracing: Fix some typos in comments
s/wihin/within/ s/retrieven/retrieved/ s/suppport/support/ s/wil/will/ s/accidently/accidentally/ s/if the if the/if the/ Link: https://lkml.kernel.org/r/20201010140924.3809-1-hqjagain@gmail.com Signed-off-by: Qiujun Huang <hqjagain@gmail.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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c163409719 |
tracing/boot: Add ftrace.instance.*.alloc_snapshot option
Add ftrace.instance.*.alloc_snapshot option. This option has been described in Documentation/trace/boottime-trace.rst but not implemented yet. ftrace.[instance.INSTANCE.]alloc_snapshot Allocate snapshot buffer. The difference from kernel.alloc_snapshot is that the kernel.alloc_snapshot will allocate the buffer only for the main instance, but this can allocate buffer for any new instances. Link: https://lkml.kernel.org/r/160234368948.400560.15313384470765915015.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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bbeb97464e |
tracing: Fix race in trace_open and buffer resize call
Below race can come, if trace_open and resize of
cpu buffer is running parallely on different cpus
CPUX CPUY
ring_buffer_resize
atomic_read(&buffer->resize_disabled)
tracing_open
tracing_reset_online_cpus
ring_buffer_reset_cpu
rb_reset_cpu
rb_update_pages
remove/insert pages
resetting pointer
This race can cause data abort or some times infinte loop in
rb_remove_pages and rb_insert_pages while checking pages
for sanity.
Take buffer lock to fix this.
Link: https://lkml.kernel.org/r/1601976833-24377-1-git-send-email-gkohli@codeaurora.org
Cc: stable@vger.kernel.org
Fixes:
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6d9bd13945 |
tracing: Check return value of __create_val_fields() before using its result
After having a typo for writing a histogram trigger.
Wrote:
echo 'hist:key=pid:ts=common_timestamp.usec' > events/sched/sched_waking/trigger
Instead of:
echo 'hist:key=pid:ts=common_timestamp.usecs' > events/sched/sched_waking/trigger
and the following crash happened:
BUG: kernel NULL pointer dereference, address: 0000000000000008
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 4 PID: 1641 Comm: sh Not tainted 5.9.0-rc5-test+ #549
Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v03.03 07/14/2016
RIP: 0010:event_hist_trigger_func+0x70b/0x1ee0
Code: 24 08 89 d5 49 89 cc e9 8c 00 00 00 4c 89 f2 41 b9 00 10 00 00 4c 89 e1 44 89 ee 4c 89 ff e8 dc d3 ff ff 45 89 ea 4b 8b 14 d7 <f6> 42 08 04 74 17 41 8b 8f c0 00 00 00 8d 71 01 41 89 b7 c0 00 00
RSP: 0018:ffff959213d53db0 EFLAGS: 00010202
RAX: ffffffffffffffea RBX: 0000000000000000 RCX: 0000000000084c04
RDX: 0000000000000000 RSI: df7326aefebd174c RDI: 0000000000031080
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000046 R12: ffff959211dcf690
R13: 0000000000000001 R14: ffff95925a36e370 R15: ffff959251c89800
FS: 00007fb9ea934740(0000) GS:ffff95925ab00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 00000000c976c005 CR4: 00000000001706e0
Call Trace:
? trigger_process_regex+0x78/0x110
trigger_process_regex+0xc5/0x110
event_trigger_write+0x71/0xd0
vfs_write+0xca/0x210
ksys_write+0x70/0xf0
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fb9eaa29487
Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
This was caused by accessing the hlist_data fields after the call to
__create_val_fields() without checking if the creation succeed.
Link: https://lkml.kernel.org/r/20201013154852.3abd8702@gandalf.local.home
Fixes:
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e688c3db7c |
bpf: Fix register equivalence tracking.
The 64-bit JEQ/JNE handling in reg_set_min_max() was clearing reg->id in either
true or false branch. In the case 'if (reg->id)' check was done on the other
branch the counter part register would have reg->id == 0 when called into
find_equal_scalars(). In such case the helper would incorrectly identify other
registers with id == 0 as equivalent and propagate the state incorrectly.
Fix it by preserving ID across reg_set_min_max().
In other words any kind of comparison operator on the scalar register
should preserve its ID to recognize:
r1 = r2
if (r1 == 20) {
#1 here both r1 and r2 == 20
} else if (r2 < 20) {
#2 here both r1 and r2 < 20
}
The patch is addressing #1 case. The #2 was working correctly already.
Fixes:
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eac48eb6ce |
printk: ringbuffer: Wrong data pointer when appending small string
data_realloc() returns wrong data pointer when the block is wrapped and
the size is not increased. It might happen when pr_cont() wants to
add only few characters and there is already a space for them because
of alignment.
It might cause writing outsite the buffer. It has been detected by LTP
tests with KASAN enabled:
[ 221.921944] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=c,mems_allowed=0,oom_memcg=/0,task_memcg=in
[ 221.922108] ==================================================================
[ 221.922111] BUG: KASAN: global-out-of-bounds in vprintk_store+0x362/0x3d0
[ 221.922112] Write of size 2 at addr ffffffffba51dbcd by task
memcg_test_1/11282
[ 221.922113]
[ 221.922114] CPU: 1 PID: 11282 Comm: memcg_test_1 Not tainted
5.9.0-next-20201013 #1
[ 221.922116] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.0b 07/27/2017
[ 221.922116] Call Trace:
[ 221.922117] dump_stack+0xa4/0xd9
[ 221.922118] print_address_description.constprop.0+0x21/0x210
[ 221.922119] ? _raw_write_lock_bh+0xe0/0xe0
[ 221.922120] ? vprintk_store+0x362/0x3d0
[ 221.922121] kasan_report.cold+0x37/0x7c
[ 221.922122] ? vprintk_store+0x362/0x3d0
[ 221.922123] check_memory_region+0x18c/0x1f0
[ 221.922124] memcpy+0x3c/0x60
[ 221.922125] vprintk_store+0x362/0x3d0
[ 221.922125] ? __ia32_sys_syslog+0x50/0x50
[ 221.922126] ? _raw_spin_lock_irqsave+0x9b/0x100
[ 221.922127] ? _raw_spin_lock_irq+0xf0/0xf0
[ 221.922128] ? __kasan_check_write+0x14/0x20
[ 221.922129] vprintk_emit+0x8d/0x1f0
[ 221.922130] vprintk_default+0x1d/0x20
[ 221.922131] vprintk_func+0x5a/0x100
[ 221.922132] printk+0xb2/0xe3
[ 221.922133] ? swsusp_write.cold+0x189/0x189
[ 221.922134] ? kernfs_vfs_xattr_set+0x60/0x60
[ 221.922134] ? _raw_write_lock_bh+0xe0/0xe0
[ 221.922135] ? trace_hardirqs_on+0x38/0x100
[ 221.922136] pr_cont_kernfs_path.cold+0x49/0x4b
[ 221.922137] mem_cgroup_print_oom_context.cold+0x74/0xc3
[ 221.922138] dump_header+0x340/0x3bf
[ 221.922139] oom_kill_process.cold+0xb/0x10
[ 221.922140] out_of_memory+0x1e9/0x860
[ 221.922141] ? oom_killer_disable+0x210/0x210
[ 221.922142] mem_cgroup_out_of_memory+0x198/0x1c0
[ 221.922143] ? mem_cgroup_count_precharge_pte_range+0x250/0x250
[ 221.922144] try_charge+0xa9b/0xc50
[ 221.922145] ? arch_stack_walk+0x9e/0xf0
[ 221.922146] ? memory_high_write+0x230/0x230
[ 221.922146] ? avc_has_extended_perms+0x830/0x830
[ 221.922147] ? stack_trace_save+0x94/0xc0
[ 221.922148] ? stack_trace_consume_entry+0x90/0x90
[ 221.922149] __memcg_kmem_charge+0x73/0x120
[ 221.922150] ? cred_has_capability+0x10f/0x200
[ 221.922151] ? mem_cgroup_can_attach+0x260/0x260
[ 221.922152] ? selinux_sb_eat_lsm_opts+0x2f0/0x2f0
[ 221.922153] ? obj_cgroup_charge+0x16b/0x220
[ 221.922154] ? kmem_cache_alloc+0x78/0x4c0
[ 221.922155] obj_cgroup_charge+0x122/0x220
[ 221.922156] ? vm_area_alloc+0x20/0x90
[ 221.922156] kmem_cache_alloc+0x78/0x4c0
[ 221.922157] vm_area_alloc+0x20/0x90
[ 221.922158] mmap_region+0x3ed/0x9a0
[ 221.922159] ? cap_mmap_addr+0x1d/0x80
[ 221.922160] do_mmap+0x3ee/0x720
[ 221.922161] vm_mmap_pgoff+0x16a/0x1c0
[ 221.922162] ? randomize_stack_top+0x90/0x90
[ 221.922163] ? copy_page_range+0x1980/0x1980
[ 221.922163] ksys_mmap_pgoff+0xab/0x350
[ 221.922164] ? find_mergeable_anon_vma+0x110/0x110
[ 221.922165] ? __audit_syscall_entry+0x1a6/0x1e0
[ 221.922166] __x64_sys_mmap+0x8d/0xb0
[ 221.922167] do_syscall_64+0x38/0x50
[ 221.922168] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 221.922169] RIP: 0033:0x7fe8f5e75103
[ 221.922172] Code: 54 41 89 d4 55 48 89 fd 53 4c 89 cb 48 85 ff 74
56 49 89 d9 45 89 f8 45 89 f2 44 89 e2 4c 89 ee 48 89 ef b8 09 00 00
00 0f 05 <48> 3d 00 f0 ff ff 77 7d 5b 5d 41 5c 41 5d 41 5e 41 5f c3 66
2e 0f
[ 221.922173] RSP: 002b:00007ffd38c90198 EFLAGS: 00000246 ORIG_RAX:
0000000000000009
[ 221.922175] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe8f5e75103
[ 221.922176] RDX: 0000000000000003 RSI: 0000000000001000 RDI: 0000000000000000
[ 221.922178] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 221.922179] R10: 0000000000002022 R11: 0000000000000246 R12: 0000000000000003
[ 221.922180] R13: 0000000000001000 R14: 0000000000002022 R15: 0000000000000000
[ 221.922181]
[ 213O[ 221.922182] The buggy address belongs to the variable:
[ 221.922183] clear_seq+0x2d/0x40
[ 221.922183]
[ 221.922184] Memory state around the buggy address:
[ 221.922185] ffffffffba51da80: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
[ 221.922187] ffffffffba51db00: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
[ 221.922188] >ffffffffba51db80: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
00 f9 f9 f9
[ 221.922189] ^
[ 221.922190] ffffffffba51dc00: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9
00 f9 f9 f9
[ 221.922191] ffffffffba51dc80: f9 f9 f9 f9 01 f9 f9 f9 f9 f9 f9 f9
00 f9 f9 f9
[ 221.922193] ==================================================================
[ 221.922194] Disabling lock debugging due to kernel taint
[ 221.922196] ,task=memcg_test_1,pid=11280,uid=0
[ 221.922205] Memory cgroup out of memory: Killed process 11280
Link: https://lore.kernel.org/r/CA+G9fYt46oC7-BKryNDaaXPJ9GztvS2cs_7GjYRjanRi4+ryCQ@mail.gmail.com
Fixes:
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72a2fbda53 |
rcu/tree: docs: document bkvcache new members at struct kfree_rcu_cpu
Changeset |
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2f6c6d0891 |
Merge branch 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo: "Two minor changes. One makes cgroup interface files ignore zero-sized writes rather than triggering -EINVAL on them. The other change is a cleanup which doesn't cause any behavior changes" * 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: Zero sized write should be no-op cgroup: remove redundant kernfs_activate in cgroup_setup_root() |
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4da9af0014 |
threads-v5.10
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCX4a4sAAKCRCRxhvAZXjc ohdRAP9fclgrRkTl3o4cgaK0PUMt8BZ5QCg/SPQrVT58AQlfSwEAsNtWAeo6U2z1 FLGuCoPBEW1Zghkj1lMbIhj5zyVaEQ8= =Z7Q0 -----END PGP SIGNATURE----- Merge tag 'threads-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull pidfd updates from Christian Brauner: "This introduces a new extension to the pidfd_open() syscall. Users can now raise the new PIDFD_NONBLOCK flag to support non-blocking pidfd file descriptors. This has been requested for uses in async process management libraries such as async-pidfd in Rust. Ever since the introduction of pidfds and more advanced async io various programming languages such as Rust have grown support for async event libraries. These libraries are created to help build epoll-based event loops around file descriptors. A common pattern is to automatically make all file descriptors they manage to O_NONBLOCK. For such libraries the EAGAIN error code is treated specially. When a function is called that returns EAGAIN the function isn't called again until the event loop indicates the the file descriptor is ready. Supporting EAGAIN when waiting on pidfds makes such libraries just work with little effort. This introduces a new flag PIDFD_NONBLOCK that is equivalent to O_NONBLOCK. This follows the same patterns we have for other (anon inode) file descriptors such as EFD_NONBLOCK, IN_NONBLOCK, SFD_NONBLOCK, TFD_NONBLOCK and the same for close-on-exec flags. Passing a non-blocking pidfd to waitid() currently has no effect, i.e. is not supported. There are users which would like to use waitid() on pidfds that are O_NONBLOCK and mix it with pidfds that are blocking and both pass them to waitid(). The expected behavior is to have waitid() return -EAGAIN for non-blocking pidfds and to block for blocking pidfds without needing to perform any additional checks for flags set on the pidfd before passing it to waitid(). Non-blocking pidfds will return EAGAIN from waitid() when no child process is ready yet. Returning -EAGAIN for non-blocking pidfds makes it easier for event loops that handle EAGAIN specially. It also makes the API more consistent and uniform. In essence, waitid() is treated like a read on a non-blocking pidfd or a recvmsg() on a non-blocking socket. With the addition of support for non-blocking pidfds we support the same functionality that sockets do. For sockets() recvmsg() supports MSG_DONTWAIT for pidfds waitid() supports WNOHANG. Both flags are per-call options. In contrast non-blocking pidfds and non-blocking sockets are a setting on an open file description affecting all threads in the calling process as well as other processes that hold file descriptors referring to the same open file description. Both behaviors, per call and per open file description, have genuine use-cases. The interaction with the WNOHANG flag is documented as follows: - If a non-blocking pidfd is passed and WNOHANG is not raised we simply raise the WNOHANG flag internally. When do_wait() returns indicating that there are eligible child processes but none have exited yet we set EAGAIN. If no child process exists we continue returning ECHILD. - If a non-blocking pidfd is passed and WNOHANG is raised waitid() will continue returning 0, i.e. it will not set EAGAIN. This ensure backwards compatibility with applications passing WNOHANG explicitly with pidfds" * tag 'threads-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: tests: remove O_NONBLOCK before waiting for WSTOPPED tests: add waitid() tests for non-blocking pidfds tests: port pidfd_wait to kselftest harness pidfd: support PIDFD_NONBLOCK in pidfd_open() exit: support non-blocking pidfds |
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612e7a4c16 |
kernel-clone-v5.9
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCXz5bNAAKCRCRxhvAZXjc opfjAP9R/J72yxdd2CLGNZ96hyiRX1NgFDOVUhscOvujYJf8ZwD+OoLmKMvAyFW6 hnMhT1n9Q+aq194hyzChOLQaBTejBQ8= =4WCX -----END PGP SIGNATURE----- Merge tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull kernel_clone() updates from Christian Brauner: "During the v5.9 merge window we reworked the process creation codepaths across multiple architectures. After this work we were only left with the _do_fork() helper based on the struct kernel_clone_args calling convention. As was pointed out _do_fork() isn't valid kernelese especially for a helper that isn't just static. This series removes the _do_fork() helper and introduces the new kernel_clone() helper. The process creation cleanup didn't change the name to something more reasonable mainly because _do_fork() was used in quite a few places. So sending this as a separate series seemed the better strategy. I originally intended to send this early in the v5.9 development cycle after the merge window had closed but given that this was touching quite a few places I decided to defer this until the v5.10 merge window" * tag 'kernel-clone-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: sched: remove _do_fork() tracing: switch to kernel_clone() kgdbts: switch to kernel_clone() kprobes: switch to kernel_clone() x86: switch to kernel_clone() sparc: switch to kernel_clone() nios2: switch to kernel_clone() m68k: switch to kernel_clone() ia64: switch to kernel_clone() h8300: switch to kernel_clone() fork: introduce kernel_clone() |
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79db2b74aa |
Merge branch 'stable/for-linus-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb updates from Konrad Rzeszutek Wilk: "Minor enhancement of using %p to print phys_addr_r and also compiler warnings" * 'stable/for-linus-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb: swiotlb: Mark max_segment with static keyword swiotlb: Declare swiotlb_late_init_with_default_size() in header swiotlb: Use %pa to print phys_addr_t variables |
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a73f863af4 |
sched/features: Fix !CONFIG_JUMP_LABEL case
Commit: |
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eba9f08293 |
sched: Replace zero-length array with flexible-array
In the following commit:
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0b8417c141 |
Power management updates for 5.10-rc1
- Rework cpufreq statistics collection to allow it to take place when fast frequency switching is enabled in the governor (Viresh Kumar). - Make the cpufreq core set the frequency scale on behalf of the driver and update several cpufreq drivers accordingly (Ionela Voinescu, Valentin Schneider). - Add new hardware support to the STI and qcom cpufreq drivers and improve them (Alain Volmat, Manivannan Sadhasivam). - Fix multiple assorted issues in cpufreq drivers (Jon Hunter, Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan Gerhold, Viresh Kumar). - Fix several assorted issues in the operating performance points (OPP) framework (Stephan Gerhold, Viresh Kumar). - Allow devfreq drivers to fetch devfreq instances by DT enumeration instead of using explicit phandles and modify the devfreq core code to support driver-specific devfreq DT bindings (Leonard Crestez, Chanwoo Choi). - Improve initial hardware resetting in the tegra30 devfreq driver and clean up the tegra cpuidle driver (Dmitry Osipenko). - Update the cpuidle core to collect state entry rejection statistics and expose them via sysfs (Lina Iyer). - Improve the ACPI _CST code handling diagnostics (Chen Yu). - Update the PSCI cpuidle driver to allow the PM domain initialization to occur in the OSI mode as well as in the PC mode (Ulf Hansson). - Rework the generic power domains (genpd) core code to allow domain power off transition to be aborted in the absence of the "power off" domain callback (Ulf Hansson). - Fix two suspend-to-idle issues in the ACPI EC driver (Rafael Wysocki). - Fix the handling of timer_expires in the PM-runtime framework on 32-bit systems and the handling of device links in it (Grygorii Strashko, Xiang Chen). - Add IO requests batching support to the hibernate image saving and reading code and drop a bogus get_gendisk() from there (Xiaoyi Chen, Christoph Hellwig). - Allow PCIe ports to be put into the D3cold power state if they are power-manageable via ACPI (Lukas Wunner). - Add missing header file include to a power capping driver (Pujin Shi). - Clean up the qcom-cpr AVS driver a bit (Liu Shixin). - Kevin Hilman steps down as designated reviwer of adaptive voltage scaling (AVS) driverrs (Kevin Hilman). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAl+F4A4SHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxX6QP/iELq9/OsH0aJdDQlY9tnh2Oa13+HB/Y w1e6W+ZR/YjPgUpMVARwRLKf/gn7dUEwRDHVpGvDOyun+HACCPHB2hg8iktbxdVl NFAVGZCCRezXqz3opL1hl8C3Dh0CqUPUjWXGMr+Lw2TZQKT+hx9K1dm9Epe3ivyT RlVH/wifei80cFRcUUj7DI5KLCAyk+uKkZIFnZHAGKK6qOHMqRL5sDZsMUwWpd2i AdghABjePbaiLTAoZuUsJINAGY4DnIt6ASRdMJ4iksiD6pFITwFs0HSOPe7hZLlv zbwDPI5+TIkrOy9/aWoMaEIH1OQiFN/O++Slvdjn7gMsRgoW4d300ru4Jo1pOHxb 5twxagCCqlOf4YAaSrMCH4HT+c6fOWoGj2AKzX3DMJyO3/WN+8XNvUxKtC5Px1u+ pWRASjfQMO2j6nNjTCTwDJdYzggiKa54rYH2k7svX7XnTIAf+2E1gv8b4rMTgQrZ 0rq9kULYlhgk3EYjd/DndkvxunRlmiqhzrYB4jc9eDSPNzB8FZEbw1ZMRQTFfjK0 kp0vaEpTJ7JfKSCfluB4UmTuQoGogLl0xbzc+2NNIpwdNmrH2Srvq6wbj35jEDTU tqsTsBP+XZFOWyFOw/L2J47LTOp0TJnz8z4aycLfrmdNUVnXJoU1sXgFlDzETMgT 0E6cTVwLF7Zi =rGhy -----END PGP SIGNATURE----- Merge tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "These rework the collection of cpufreq statistics to allow it to take place if fast frequency switching is enabled in the governor, rework the frequency invariance handling in the cpufreq core and drivers, add new hardware support to a couple of cpufreq drivers, fix a number of assorted issues and clean up the code all over. Specifics: - Rework cpufreq statistics collection to allow it to take place when fast frequency switching is enabled in the governor (Viresh Kumar). - Make the cpufreq core set the frequency scale on behalf of the driver and update several cpufreq drivers accordingly (Ionela Voinescu, Valentin Schneider). - Add new hardware support to the STI and qcom cpufreq drivers and improve them (Alain Volmat, Manivannan Sadhasivam). - Fix multiple assorted issues in cpufreq drivers (Jon Hunter, Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan Gerhold, Viresh Kumar). - Fix several assorted issues in the operating performance points (OPP) framework (Stephan Gerhold, Viresh Kumar). - Allow devfreq drivers to fetch devfreq instances by DT enumeration instead of using explicit phandles and modify the devfreq core code to support driver-specific devfreq DT bindings (Leonard Crestez, Chanwoo Choi). - Improve initial hardware resetting in the tegra30 devfreq driver and clean up the tegra cpuidle driver (Dmitry Osipenko). - Update the cpuidle core to collect state entry rejection statistics and expose them via sysfs (Lina Iyer). - Improve the ACPI _CST code handling diagnostics (Chen Yu). - Update the PSCI cpuidle driver to allow the PM domain initialization to occur in the OSI mode as well as in the PC mode (Ulf Hansson). - Rework the generic power domains (genpd) core code to allow domain power off transition to be aborted in the absence of the "power off" domain callback (Ulf Hansson). - Fix two suspend-to-idle issues in the ACPI EC driver (Rafael Wysocki). - Fix the handling of timer_expires in the PM-runtime framework on 32-bit systems and the handling of device links in it (Grygorii Strashko, Xiang Chen). - Add IO requests batching support to the hibernate image saving and reading code and drop a bogus get_gendisk() from there (Xiaoyi Chen, Christoph Hellwig). - Allow PCIe ports to be put into the D3cold power state if they are power-manageable via ACPI (Lukas Wunner). - Add missing header file include to a power capping driver (Pujin Shi). - Clean up the qcom-cpr AVS driver a bit (Liu Shixin). - Kevin Hilman steps down as designated reviwer of adaptive voltage scaling (AVS) drivers (Kevin Hilman)" * tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits) cpufreq: stats: Fix string format specifier mismatch arm: disable frequency invariance for CONFIG_BL_SWITCHER cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale() cpufreq: stats: Add memory barrier to store_reset() cpufreq: schedutil: Simplify sugov_fast_switch() ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe() ACPI: EC: PM: Flush EC work unconditionally after wakeup PCI/ACPI: Whitelist hotplug ports for D3 if power managed by ACPI PM: hibernate: remove the bogus call to get_gendisk() in software_resume() cpufreq: Move traces and update to policy->cur to cpufreq core cpufreq: stats: Enable stats for fast-switch as well cpufreq: stats: Mark few conditionals with unlikely() cpufreq: stats: Remove locking cpufreq: stats: Defer stats update to cpufreq_stats_record_transition() PM: domains: Allow to abort power off when no ->power_off() callback PM: domains: Rename power state enums for genpd PM / devfreq: tegra30: Improve initial hardware resetting PM / devfreq: event: Change prototype of devfreq_event_get_edev_by_phandle function PM / devfreq: Change prototype of devfreq_get_devfreq_by_phandle function PM / devfreq: Add devfreq_get_devfreq_by_node function ... |
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6873139ed0 |
objtool changes for v5.10:
- Most of the changes are cleanups and reorganization to make the objtool code more arch-agnostic. This is in preparation for non-x86 support. Fixes: - KASAN fixes. - Handle unreachable trap after call to noreturn functions better. - Ignore unreachable fake jumps. - Misc smaller fixes & cleanups. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+FgwIRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1juGw/6A6goA5/HHapM965yG1eY/rTLp3eIbcma 1ZbkUsP0YfT6wVUzw/sOeZzKNOwOq1FuMfkjuH2KcnlxlcMekIaKvLk8uauW4igM hbFGuuZfZ0An5ka9iQ1W6HGdsuD3vVlN1w/kxdWk0c3lJCVQSTxdCfzF8fuF3gxX lF3Bc1D/ZFcHIHT/hu/jeIUCgCYpD3qZDjQJBScSwVthZC+Fw6weLLGp2rKDaCao HhSQft6MUfDrUKfH3LBIUNPRPCOrHo5+AX6BXxLXJVxqlwO/YU3e0GMwSLedMtBy TASWo7/9GAp+wNNZe8EliyTKrfC3sLxN1QImfjuojxbBVXx/YQ/ToTt9fVGpF4Y+ XhhRFv9520v1tS2wPHIgQGwbh7EWG6mdrmo10RAs/31ViONPrbEZ4WmcA08b/5FY KEkOVb18yfmDVzVZPpSc+HpIFkppEBOf7wPg27Bj3RTZmzIl/y+rKSnxROpsJsWb R6iov7SFVET14lHl1G7tPNXfqRaS7HaOQIj3rSUyAP0ZfX+yIupVJp32dc6Ofg8b SddUCwdIHoFdUNz4Y9csUCrewtCVJbxhV4MIdv0GpWbrgSw96RFZgetaH+6mGRpj 0Kh6M1eC3irDbhBuarWUBAr2doPAq4iOUeQU36Q6YSAbCs83Ws2uKOWOHoFBVwCH uSKT0wqqG+E= =KX5o -----END PGP SIGNATURE----- Merge tag 'objtool-core-2020-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool updates from Ingo Molnar: "Most of the changes are cleanups and reorganization to make the objtool code more arch-agnostic. This is in preparation for non-x86 support. Other changes: - KASAN fixes - Handle unreachable trap after call to noreturn functions better - Ignore unreachable fake jumps - Misc smaller fixes & cleanups" * tag 'objtool-core-2020-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) perf build: Allow nested externs to enable BUILD_BUG() usage objtool: Allow nested externs to enable BUILD_BUG() objtool: Permit __kasan_check_{read,write} under UACCESS objtool: Ignore unreachable trap after call to noreturn functions objtool: Handle calling non-function symbols in other sections objtool: Ignore unreachable fake jumps objtool: Remove useless tests before save_reg() objtool: Decode unwind hint register depending on architecture objtool: Make unwind hint definitions available to other architectures objtool: Only include valid definitions depending on source file type objtool: Rename frame.h -> objtool.h objtool: Refactor jump table code to support other architectures objtool: Make relocation in alternative handling arch dependent objtool: Abstract alternative special case handling objtool: Move macros describing structures to arch-dependent code objtool: Make sync-check consider the target architecture objtool: Group headers to check in a single list objtool: Define 'struct orc_entry' only when needed objtool: Skip ORC entry creation for non-text sections objtool: Move ORC logic out of check() ... |
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d5660df4a5 |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "181 patches. Subsystems affected by this patch series: kbuild, scripts, ntfs, ocfs2, vfs, mm (slab, slub, kmemleak, dax, debug, pagecache, fadvise, gup, swap, memremap, memcg, selftests, pagemap, mincore, hmm, dma, memory-failure, vmallo and migration)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (181 commits) mm/migrate: remove obsolete comment about device public mm/migrate: remove cpages-- in migrate_vma_finalize() mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary memblock: use separate iterators for memory and reserved regions memblock: implement for_each_reserved_mem_region() using __next_mem_region() memblock: remove unused memblock_mem_size() x86/setup: simplify reserve_crashkernel() x86/setup: simplify initrd relocation and reservation arch, drivers: replace for_each_membock() with for_each_mem_range() arch, mm: replace for_each_memblock() with for_each_mem_pfn_range() memblock: reduce number of parameters in for_each_mem_range() memblock: make memblock_debug and related functionality private memblock: make for_each_memblock_type() iterator private mircoblaze: drop unneeded NUMA and sparsemem initializations riscv: drop unneeded node initialization h8300, nds32, openrisc: simplify detection of memory extents arm64: numa: simplify dummy_numa_init() arm, xtensa: simplify initialization of high memory pages dma-contiguous: simplify cma_early_percent_memory() KVM: PPC: Book3S HV: simplify kvm_cma_reserve() ... |
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67197a4f28 |
mm, oom_adj: don't loop through tasks in __set_oom_adj when not necessary
Currently __set_oom_adj loops through all processes in the system to keep
oom_score_adj and oom_score_adj_min in sync between processes sharing
their mm. This is done for any task with more that one mm_users, which
includes processes with multiple threads (sharing mm and signals).
However for such processes the loop is unnecessary because their signal
structure is shared as well.
Android updates oom_score_adj whenever a tasks changes its role
(background/foreground/...) or binds to/unbinds from a service, making it
more/less important. Such operation can happen frequently. We noticed
that updates to oom_score_adj became more expensive and after further
investigation found out that the patch mentioned in "Fixes" introduced a
regression. Using Pixel 4 with a typical Android workload, write time to
oom_score_adj increased from ~3.57us to ~362us. Moreover this regression
linearly depends on the number of multi-threaded processes running on the
system.
Mark the mm with a new MMF_MULTIPROCESS flag bit when task is created with
(CLONE_VM && !CLONE_THREAD && !CLONE_VFORK). Change __set_oom_adj to use
MMF_MULTIPROCESS instead of mm_users to decide whether oom_score_adj
update should be synchronized between multiple processes. To prevent
races between clone() and __set_oom_adj(), when oom_score_adj of the
process being cloned might be modified from userspace, we use
oom_adj_mutex. Its scope is changed to global.
The combination of (CLONE_VM && !CLONE_THREAD) is rarely used except for
the case of vfork(). To prevent performance regressions of vfork(), we
skip taking oom_adj_mutex and setting MMF_MULTIPROCESS when CLONE_VFORK is
specified. Clearing the MMF_MULTIPROCESS flag (when the last process
sharing the mm exits) is left out of this patch to keep it simple and
because it is believed that this threading model is rare. Should there
ever be a need for optimizing that case as well, it can be done by hooking
into the exit path, likely following the mm_update_next_owner pattern.
With the combination of (CLONE_VM && !CLONE_THREAD && !CLONE_VFORK) being
quite rare, the regression is gone after the change is applied.
[surenb@google.com: v3]
Link: https://lkml.kernel.org/r/20200902012558.2335613-1-surenb@google.com
Fixes:
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e9aa36ccbb |
dma-contiguous: simplify cma_early_percent_memory()
The memory size calculation in cma_early_percent_memory() traverses memblock.memory rather than simply call memblock_phys_mem_size(). The comment in that function suggests that at some point there should have been call to memblock_analyze() before memblock_phys_mem_size() could be used. As of now, there is no memblock_analyze() at all and memblock_phys_mem_size() can be used as soon as cold-plug memory is registered with memblock. Replace loop over memblock.memory with a call to memblock_phys_mem_size(). Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Baoquan He <bhe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Axtens <dja@axtens.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Emil Renner Berthing <kernel@esmil.dk> Cc: Hari Bathini <hbathini@linux.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: https://lkml.kernel.org/r/20200818151634.14343-3-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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c78f463649 |
mm: remove src/dst mm parameter in copy_page_range()
Both of the mm pointers are not needed after commit
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cf508b5845 |
mm: use helper function mapping_allow_writable()
Commit
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73fb952d83 |
resource: report parent to walk_iomem_res_desc() callback
In support of detecting whether a resource might have been been claimed, report the parent to the walk_iomem_res_desc() callback. For example, the ACPI HMAT parser publishes "hmem" platform devices per target range. However, if the HMAT is disabled / missing a fallback driver can attach devices to the raw memory ranges as a fallback if it sees unclaimed / orphan "Soft Reserved" resources in the resource tree. Otherwise, find_next_iomem_res() returns a resource with garbage data from the stack allocation in __walk_iomem_res_desc() for the res->parent field. There are currently no users that expect ->child and ->sibling to be valid, and the resource_lock would be needed to traverse them. Use a compound literal to implicitly zero initialize the fields that are not being returned in addition to setting ->parent. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jason Gunthorpe <jgg@mellanox.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Wei Yang <richard.weiyang@linux.alibaba.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brice Goglin <Brice.Goglin@inria.fr> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Dave Jiang <dave.jiang@intel.com> Cc: David Airlie <airlied@linux.ie> Cc: David Hildenbrand <david@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Jia He <justin.he@arm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mike Rapoport <rppt@linux.ibm.com> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Pavel Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Will Deacon <will@kernel.org> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Hulk Robot <hulkci@huawei.com> Cc: Jason Yan <yanaijie@huawei.com> Cc: "Jérôme Glisse" <jglisse@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: kernel test robot <lkp@intel.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Link: https://lkml.kernel.org/r/159643097166.4062302.11875688887228572793.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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8b05418b25 |
seccomp updates for v5.10-rc1
- heavily refactor seccomp selftests (and clone3 selftests dependency) to fix powerpc (Kees Cook, Thadeu Lima de Souza Cascardo) - fix style issue in selftests (Zou Wei) - upgrade "unknown action" from KILL_THREAD to KILL_PROCESS (Rich Felker) - replace task_pt_regs(current) with current_pt_regs() (Denis Efremov) - fix corner-case race in USER_NOTIF (Jann Horn) - make CONFIG_SECCOMP no longer per-arch (YiFei Zhu) -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAl+E1LAWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJgRfD/0cq7W51+o34719vefC+oZaMjJJ Bd5HYshmr6NRpMqn0OhtT9kVi6OeV0sK0VJeNxSISDIaGNJ8xCI9YhnXwzY+7myK +IQu3i2Hv7dlWvTaXWFLL+mvfk6WopLntFGGJQ8KPMnP2gcfH2AZmOeAKGFGhBDe NwpAUZ9zriXg9JCQp6u0FzPJgk8KfgfHjUY6Hsa095gg0aPSJhc8bWEUNBQwjCe6 uIcxDP/zK2WWaEhO9BfHt6/VTcXw7QgTLS3yM+pwBCgR1JHs7HMhtgcwPT410qES LmYD8OiHmv5AZhDjcCcNipKEv3ZnxkLnpU/6hfaKM4zn/DoaR/zbfjO9U017rcNV 9gf7k5siAP7DH48IFlqf4Erzd3xyF0OJDnVfC7NiPtggPfO9aWOHJJZCuJRQOdrN qPMjkaQzFb02qb501PLEn55F24OLDjz1vFOqpkJm2/XamOBVV4uiRKmfpNEo/MOf QkhSvzvwEFErWwzPH95uFyVhs42stwnM3ppnwtya2+U5kxXdNvbAR8N5leH7siaU ab+YJIHW59+BxXTlKgXIcqBP/6RqJWJtuT9OqGs0K2A7FhQSexh5MOm+9vvGgIwZ Qjyijku8dB3aV94BNGnlJq6BV+4Hc6EGadh7h3b8GiRAUTYo0pk5G/iKL6Ii+R6p 0msJENqalKFtNCr70w== =a4u2 -----END PGP SIGNATURE----- Merge tag 'seccomp-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull seccomp updates from Kees Cook: "The bulk of the changes are with the seccomp selftests to accommodate some powerpc-specific behavioral characteristics. Additional cleanups, fixes, and improvements are also included: - heavily refactor seccomp selftests (and clone3 selftests dependency) to fix powerpc (Kees Cook, Thadeu Lima de Souza Cascardo) - fix style issue in selftests (Zou Wei) - upgrade "unknown action" from KILL_THREAD to KILL_PROCESS (Rich Felker) - replace task_pt_regs(current) with current_pt_regs() (Denis Efremov) - fix corner-case race in USER_NOTIF (Jann Horn) - make CONFIG_SECCOMP no longer per-arch (YiFei Zhu)" * tag 'seccomp-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (23 commits) seccomp: Make duplicate listener detection non-racy seccomp: Move config option SECCOMP to arch/Kconfig selftests/clone3: Avoid OS-defined clone_args selftests/seccomp: powerpc: Set syscall return during ptrace syscall exit selftests/seccomp: Allow syscall nr and ret value to be set separately selftests/seccomp: Record syscall during ptrace entry selftests/seccomp: powerpc: Fix seccomp return value testing selftests/seccomp: Remove SYSCALL_NUM_RET_SHARE_REG in favor of SYSCALL_RET_SET selftests/seccomp: Avoid redundant register flushes selftests/seccomp: Convert REGSET calls into ARCH_GETREG/ARCH_SETREG selftests/seccomp: Convert HAVE_GETREG into ARCH_GETREG/ARCH_SETREG selftests/seccomp: Remove syscall setting #ifdefs selftests/seccomp: mips: Remove O32-specific macro selftests/seccomp: arm64: Define SYSCALL_NUM_SET macro selftests/seccomp: arm: Define SYSCALL_NUM_SET macro selftests/seccomp: mips: Define SYSCALL_NUM_SET macro selftests/seccomp: Provide generic syscall setting macro selftests/seccomp: Refactor arch register macros to avoid xtensa special case selftests/seccomp: Use __NR_mknodat instead of __NR_mknod selftests/seccomp: Use bitwise instead of arithmetic operator for flags ... |
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01fb1e2f42 |
audit/stable-5.10 PR 20201012
-----BEGIN PGP SIGNATURE----- iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAl+E9ScUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXMbmxAAqXBBieR0UY5zHcvBf7YD6pOUolXJ +tSAIVhGru+XYuDtHgWjNF0t788WX8rTFAjTn+fUzpiWPPGLUnvVYNtNkKkbzXY4 zY8J+f+s9YqMVxzs1yPI7cKNBu6P7A8XDRqtfBaZ4Zcnt/H9TsMX+zWMf/+W4+tD zWhJLeD1oXaCAiCznx94IfocguiIVowO6242N58hQTGgPjNKu+FJoSC4DywhGWij RqrfTXRmecaQs9yPtDmOoyFuuDI0tbbIcUNTID0Gmo/9ivo9qDDGAA+qEkqpc5Ys VI6XZ7ZD5KJSf8PFsvs4PDQ6MNrI3KDTDBcTwOyEfvofbKiFCUy/UJTA1fI52EgA 9euA+44mDqKPuiykWT3S50Jpx7FaRxdGJEvEGY3IwuY3YaVdB1kspeyacmd4HQbL j3rX38MlHoexUj3a++K5JJTAt0E26JP5M6QNwJ+T9Idnn2A4jKFyFBLWgkPL7Ai0 JP7CFU8qO8HoPadIhgUoSFYydCxhFUD2kATvD2Oz+PXxC6ATRmV+j2lwnX+uOFxD zS8uybeEfQuwsQ65rIdmKlTObjCtABwTLY3z67aWygQDwbRIlSuVBPpBt5VG0q04 mXKaawX3NKFP0kp0o0f/Z8/J8voS5mEIQyv7Br/fR1Yq6/BOw+lCOxerMucLtyj2 ljCy6+WeblHsS2A= =n+Nq -----END PGP SIGNATURE----- Merge tag 'audit-pr-20201012' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit Pull audit updates from Paul Moore: "A small set of audit patches for v5.10. There are only three patches in total, and all three are trivial fixes that don't really warrant any explanations beyond their descriptions. As usual, all three patches pass our test suite" * tag 'audit-pr-20201012' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: audit: Remove redundant null check audit: uninitialize variable audit_sig_sid audit: change unnecessary globals into statics |
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d594d8f411 |
printk changes for 5.10
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6ad4bf6ea1 |
io_uring-5.10-2020-10-12
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl+EXPEQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpiR4EAC3trm1ojXVF7y9/XRhcPpb4Pror+ZA1coO gyoy+zUuCEl9WCzzHWqXULMYMP0YzNJnJs0oLQPA1s0sx1H4uDMl/UXg0OXZisYG Y59Kca3c1DHFwj9KPQXfGmCEjc/rbDWK5TqRc2iZMz+6E5Mt71UFZHtenwgV1zD8 hTmZZkzLCu2ePfOvrPONgL5tDqPWGVyn61phoC7cSzMF66juXGYuvQGktzi/m6q+ jAxUnhKvKTlLB9wsq3s5X/20/QD56Yuba9U+YxeeNDBE8MDWQOsjz0mZCV1fn4p3 h/6762aRaWaXH7EwMtsHFUWy7arJZg/YoFYNYLv4Ksyy3y4sMABZCy3A+JyzrgQ0 hMu7vjsP+k22X1WH8nyejBfWNEmxu6dpgckKrgF0dhJcXk/acWA3XaDWZ80UwfQy isKRAP1rA0MJKHDMIwCzSQJDPvtUAkPptbNZJcUSU78o+pPoCaQ93V++LbdgGtKn iGJJqX05dVbcsDx5X7fluphjkUTC4yFr7ZgLgbOIedXajWRD8iOkO2xxCHk6SKFl iv9entvRcX9k3SHK9uffIUkRBUujMU0+HCIQFCO1qGmkCaS5nSrovZl4HoL7L/Dj +T8+v7kyJeklLXgJBaE7jk01O4HwZKjwPWMbCjvL9NKk8j7c1soYnRu5uNvi85Mu /9wn671s+w== =udgj -----END PGP SIGNATURE----- Merge tag 'io_uring-5.10-2020-10-12' of git://git.kernel.dk/linux-block Pull io_uring updates from Jens Axboe: - Add blkcg accounting for io-wq offload (Dennis) - A use-after-free fix for io-wq (Hillf) - Cancelation fixes and improvements - Use proper files_struct references for offload - Cleanup of io_uring_get_socket() since that can now go into our own header - SQPOLL fixes and cleanups, and support for sharing the thread - Improvement to how page accounting is done for registered buffers and huge pages, accounting the real pinned state - Series cleaning up the xarray code (Willy) - Various cleanups, refactoring, and improvements (Pavel) - Use raw spinlock for io-wq (Sebastian) - Add support for ring restrictions (Stefano) * tag 'io_uring-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (62 commits) io_uring: keep a pointer ref_node in file_data io_uring: refactor *files_register()'s error paths io_uring: clean file_data access in files_register io_uring: don't delay io_init_req() error check io_uring: clean leftovers after splitting issue io_uring: remove timeout.list after hrtimer cancel io_uring: use a separate struct for timeout_remove io_uring: improve submit_state.ios_left accounting io_uring: simplify io_file_get() io_uring: kill extra check in fixed io_file_get() io_uring: clean up ->files grabbing io_uring: don't io_prep_async_work() linked reqs io_uring: Convert advanced XArray uses to the normal API io_uring: Fix XArray usage in io_uring_add_task_file io_uring: Fix use of XArray in __io_uring_files_cancel io_uring: fix break condition for __io_uring_register() waiting io_uring: no need to call xa_destroy() on empty xarray io_uring: batch account ->req_issue and task struct references io_uring: kill callback_head argument for io_req_task_work_add() io_uring: move req preps out of io_issue_sqe() ... |
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3ad11d7ac8 |
block-5.10-2020-10-12
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl+EWUgQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpnoxEADCVSNBRkpV0OVkOEC3wf8EGhXhk01Jnjtl u5Mg2V55hcgJ0thQxBV/V28XyqmsEBrmAVi0Yf8Vr9Qbq4Ze08Wae4ChS4rEOyh1 jTcGYWx5aJB3ChLvV/HI0nWQ3bkj03mMrL3SW8rhhf5DTyKHsVeTenpx42Qu/FKf fRzi09FSr3Pjd0B+EX6gunwJnlyXQC5Fa4AA0GhnXJzAznANXxHkkcXu8a6Yw75x e28CfhIBliORsK8sRHLoUnPpeTe1vtxCBhBMsE+gJAj9ZUOWMzvNFIPP4FvfawDy 6cCQo2m1azJ/IdZZCDjFUWyjh+wxdKMp+NNryEcoV+VlqIoc3n98rFwrSL+GIq5Z WVwEwq+AcwoMCsD29Lu1ytL2PQ/RVqcJP5UheMrbL4vzefNfJFumQVZLIcX0k943 8dFL2QHL+H/hM9Dx5y5rjeiWkAlq75v4xPKVjh/DHb4nehddCqn/+DD5HDhNANHf c1kmmEuYhvLpIaC4DHjE6DwLh8TPKahJjwsGuBOTr7D93NUQD+OOWsIhX6mNISIl FFhP8cd0/ZZVV//9j+q+5B4BaJsT+ZtwmrelKFnPdwPSnh+3iu8zPRRWO+8P8fRC YvddxuJAmE6BLmsAYrdz6Xb/wqfyV44cEiyivF0oBQfnhbtnXwDnkDWSfJD1bvCm ZwfpDh2+Tg== =LzyE -----END PGP SIGNATURE----- Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block Pull block updates from Jens Axboe: - Series of merge handling cleanups (Baolin, Christoph) - Series of blk-throttle fixes and cleanups (Baolin) - Series cleaning up BDI, seperating the block device from the backing_dev_info (Christoph) - Removal of bdget() as a generic API (Christoph) - Removal of blkdev_get() as a generic API (Christoph) - Cleanup of is-partition checks (Christoph) - Series reworking disk revalidation (Christoph) - Series cleaning up bio flags (Christoph) - bio crypt fixes (Eric) - IO stats inflight tweak (Gabriel) - blk-mq tags fixes (Hannes) - Buffer invalidation fixes (Jan) - Allow soft limits for zone append (Johannes) - Shared tag set improvements (John, Kashyap) - Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel) - DM no-wait support (Mike, Konstantin) - Request allocation improvements (Ming) - Allow md/dm/bcache to use IO stat helpers (Song) - Series improving blk-iocost (Tejun) - Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang, Xianting, Yang, Yufen, yangerkun) * tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits) block: fix uapi blkzoned.h comments blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue blk-mq: get rid of the dead flush handle code path block: get rid of unnecessary local variable block: fix comment and add lockdep assert blk-mq: use helper function to test hw stopped block: use helper function to test queue register block: remove redundant mq check block: invoke blk_mq_exit_sched no matter whether have .exit_sched percpu_ref: don't refer to ref->data if it isn't allocated block: ratelimit handle_bad_sector() message blk-throttle: Re-use the throtl_set_slice_end() blk-throttle: Open code __throtl_de/enqueue_tg() blk-throttle: Move service tree validation out of the throtl_rb_first() blk-throttle: Move the list operation after list validation blk-throttle: Fix IO hang for a corner case blk-throttle: Avoid tracking latency if low limit is invalid blk-throttle: Avoid getting the current time if tg->last_finish_time is 0 blk-throttle: Remove a meaningless parameter for throtl_downgrade_state() block: Remove redundant 'return' statement ... |
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111767c1d8 |
LSM: Signal to SafeSetID when setting group IDs
For SafeSetID to properly gate set*gid() calls, it needs to know whether ns_capable() is being called from within a sys_set*gid() function or is being called from elsewhere in the kernel. This allows SafeSetID to deny CAP_SETGID to restricted groups when they are attempting to use the capability for code paths other than updating GIDs (e.g. setting up userns GID mappings). This is the identical approach to what is currently done for CAP_SETUID. NOTE: We also add signaling to SafeSetID from the setgroups() syscall, as we have future plans to restrict a process' ability to set supplementary groups in addition to what is added in this series for restricting setting of the primary group. Signed-off-by: Thomas Cedeno <thomascedeno@google.com> Signed-off-by: Micah Morton <mortonm@chromium.org> |
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2cf9ba2905 |
Merge branches 'pm-core', 'pm-sleep', 'pm-pci' and 'pm-domains'
* pm-core: PM: runtime: Fix timer_expires data type on 32-bit arches PM: runtime: Remove link state checks in rpm_get/put_supplier() * pm-sleep: ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe() ACPI: EC: PM: Flush EC work unconditionally after wakeup PM: hibernate: remove the bogus call to get_gendisk() in software_resume() PM: hibernate: Batch hibernate and resume IO requests * pm-pci: PCI/ACPI: Whitelist hotplug ports for D3 if power managed by ACPI * pm-domains: PM: domains: Allow to abort power off when no ->power_off() callback PM: domains: Rename power state enums for genpd |
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9c2ff6650f |
Merge branch 'pm-cpufreq'
* pm-cpufreq: (30 commits) cpufreq: stats: Fix string format specifier mismatch arm: disable frequency invariance for CONFIG_BL_SWITCHER cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale() cpufreq: stats: Add memory barrier to store_reset() cpufreq: schedutil: Simplify sugov_fast_switch() cpufreq: Move traces and update to policy->cur to cpufreq core cpufreq: stats: Enable stats for fast-switch as well cpufreq: stats: Mark few conditionals with unlikely() cpufreq: stats: Remove locking cpufreq: stats: Defer stats update to cpufreq_stats_record_transition() arch_topology, arm, arm64: define arch_scale_freq_invariant() arch_topology, cpufreq: constify arch_* cpumasks cpufreq: report whether cpufreq supports Frequency Invariance (FI) cpufreq: move invariance setter calls in cpufreq core arch_topology: validate input frequencies to arch_set_freq_scale() cpufreq: qcom: Don't add frequencies without an OPP cpufreq: qcom-hw: Add cpufreq support for SM8250 SoC cpufreq: qcom-hw: Use of_device_get_match_data for offsets and row size cpufreq: qcom-hw: Use devm_platform_ioremap_resource() to simplify code dt-bindings: cpufreq: cpufreq-qcom-hw: Document Qcom EPSS compatible ... |
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e18afa5bfa |
Merge branch 'work.quota-compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull compat quotactl cleanups from Al Viro: "More Christoph's compat cleanups: quotactl(2)" * 'work.quota-compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: quota: simplify the quotactl compat handling compat: add a compat_need_64bit_alignment_fixup() helper compat: lift compat_s64 and compat_u64 to <asm-generic/compat.h> |
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ccdf7fae3a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says: ==================== pull-request: bpf-next 2020-10-12 The main changes are: 1) The BPF verifier improvements to track register allocation pattern, from Alexei and Yonghong. 2) libbpf relocation support for different size load/store, from Andrii. 3) bpf_redirect_peer() helper and support for inner map array with different max_entries, from Daniel. 4) BPF support for per-cpu variables, form Hao. 5) sockmap improvements, from John. ==================== Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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1c6890707e |
This tree prepares to unify the kretprobe trampoline handler and make
kretprobe lockless. (Those patches are still work in progress.) Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+EgmMRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hKQg//WrYVMc+lLG+QP4IuKfolZVGNeS60crZE mTvs4iX8gBrU5omrgatrjUiDhrln6MiTf6H0ec072BAho91lom/AlyDUQbta5sls uXKzIjHe9J7ca+myXGDiXkGmWXgcBYHBHifyzf04xhPyFXH869HLxFXCHeV1S3m7 Tga1Lceths425t8nnYb9yao9k26l22BSklzPqEM/XNNnktrMiaiYlfgUxi1g3hMj v9IbZy43qpzljyrnfRk/tRGMnZ/BtZpj7swQEjUVOKgmcymX6bQoxqYvpAH5mYX7 jqKcTLsw/Jm4YhZdeBpjZc2JNQkNJSLjiXMMtQTmncPKx2shuU1s4KhgRtYEEeyI BO37k3RwplED7/yBJtojNt0WWYfd7X2ee8SPuSW/VPL6jSDgJii3Um0AldPZ0J3g 72OT4rJkyqFER0ZKSf8uIym2Zi7F5IvtzK2xJAzquOQlYdCaKSNrWurckOzWHMm9 JKqUqq3nV4mFUKEE7Kf0Nu3UgQZNKpxUNepWBoJb3j6baK32Qgb6qpNLLPTTi2qJ AwxicRlr7jzdyP2cwvU5z2FuilPypOob8ZnowhhIyV+4xQY9CymJ3uluXattDC74 ZNgydTyyYCo0PwYZGUDeE8o87apYd3+sEOErLtw4CjaoiadxDaMBmfsHzU7W29Rc Fow4+FQCK/Y= =2jY/ -----END PGP SIGNATURE----- Merge tag 'perf-kprobes-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf/kprobes updates from Ingo Molnar: "This prepares to unify the kretprobe trampoline handler and make kretprobe lockless (those patches are still work in progress)" * tag 'perf-kprobes-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: kprobes: Fix to check probe enabled before disarm_kprobe_ftrace() kprobes: Make local functions static kprobes: Free kretprobe_instance with RCU callback kprobes: Remove NMI context check sparc: kprobes: Use generic kretprobe trampoline handler sh: kprobes: Use generic kretprobe trampoline handler s390: kprobes: Use generic kretprobe trampoline handler powerpc: kprobes: Use generic kretprobe trampoline handler parisc: kprobes: Use generic kretprobe trampoline handler mips: kprobes: Use generic kretprobe trampoline handler ia64: kprobes: Use generic kretprobe trampoline handler csky: kprobes: Use generic kretprobe trampoline handler arc: kprobes: Use generic kretprobe trampoline handler arm64: kprobes: Use generic kretprobe trampoline handler arm: kprobes: Use generic kretprobe trampoline handler x86/kprobes: Use generic kretprobe trampoline handler kprobes: Add generic kretprobe trampoline handler |
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3bff6112c8 |
These are the performance events changes for v5.10:
x86 Intel updates: - Add Jasper Lake support - Add support for TopDown metrics on Ice Lake - Fix Ice Lake & Tiger Lake uncore support, add Snow Ridge support - Add a PCI sub driver to support uncore PMUs where the PCI resources have been claimed already - extending the range of supported systems. x86 AMD updates: - Restore 'perf stat -a' behaviour to program the uncore PMU to count all CPU threads. - Fix setting the proper count when sampling Large Increment per Cycle events / 'paired' events. - Fix IBS Fetch sampling on F17h and some other IBS fine tuning, greatly reducing the number of interrupts when large sample periods are specified. - Extends Family 17h RAPL support to also work on compatible F19h machines. Core code updates: - Fix race in perf_mmap_close() - Add PERF_EV_CAP_SIBLING, to denote that sibling events should be closed if the leader is removed. - Smaller fixes and updates. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+Ef40RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1h7NQ//ZdQ26Yg79ZaxBX1QSINJ9AgXDi6rXs75 qU9qNwr/6EF+633RZoPQGAE0Iy5v6h7iLFokcJzM9+kK/rE3ax44tSnPlcMa0+6N SHXKCa5iL+hH7o2Spo2MZwCYseH79rloX3TSH7ajnN3X8PvwgWshF0lUE3WEWtCs eHSojdCk43IuL9TpusuNOBM2FvgnheFYWiMbFHd0MTBUMxul30sLVCG8IIWCPA+q TwG4RJS3X42VbL3SuAGFmOv4OmqNsfkvHvjpDs4NF07tRB9zjXzGrxmGhgSw0NAN 2KK25qbmrpKATIb4Eqsgk/yikX/SCrDEXrjhg3r8FnyPvRfctq1crZjjf672PI2E bDda76dH6Lq9jv5fsyJjas5OsYdMKBCnA+tGQxXPGbmTXeEcYMRbDnwhYnevI/Q/ 8pP+xstF0pmBA3tvpDPrQnYH72Qt7CLJSdcTB15NqZftU2tJxaAyJGx4gJy33jxQ wu6BIEGHQ7onQYiIyTwsBHyz6xNsF/CRHwAPcGdYrRRbXB5K5nxHiXNb4awciTMx 2HF31/S4OqURNpfcpxOQo+1fb/cLqj3loGqE4jCTwkbS3lrHcAcfxyv9QNn77l1f hdQ0jworbUNVLUYEUQz1bkZ06GD3LSSas2ZlY1NNdHo62mjyXMQmgirNcZmrFgWl tl2gNFAU9x4= =2fuY -----END PGP SIGNATURE----- Merge tag 'perf-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull performance events updates from Ingo Molnar: "x86 Intel updates: - Add Jasper Lake support - Add support for TopDown metrics on Ice Lake - Fix Ice Lake & Tiger Lake uncore support, add Snow Ridge support - Add a PCI sub driver to support uncore PMUs where the PCI resources have been claimed already - extending the range of supported systems. x86 AMD updates: - Restore 'perf stat -a' behaviour to program the uncore PMU to count all CPU threads. - Fix setting the proper count when sampling Large Increment per Cycle events / 'paired' events. - Fix IBS Fetch sampling on F17h and some other IBS fine tuning, greatly reducing the number of interrupts when large sample periods are specified. - Extends Family 17h RAPL support to also work on compatible F19h machines. Core code updates: - Fix race in perf_mmap_close() - Add PERF_EV_CAP_SIBLING, to denote that sibling events should be closed if the leader is removed. - Smaller fixes and updates" * tag 'perf-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (45 commits) perf/core: Fix race in the perf_mmap_close() function perf/x86: Fix n_metric for cancelled txn perf/x86: Fix n_pair for cancelled txn x86/events/amd/iommu: Fix sizeof mismatch perf/x86/intel: Check perf metrics feature for each CPU perf/x86/intel: Fix Ice Lake event constraint table perf/x86/intel/uncore: Fix the scale of the IMC free-running events perf/x86/intel/uncore: Fix for iio mapping on Skylake Server perf/x86/msr: Add Jasper Lake support perf/x86/intel: Add Jasper Lake support perf/x86/intel/uncore: Reduce the number of CBOX counters perf/x86/intel/uncore: Update Ice Lake uncore units perf/x86/intel/uncore: Split the Ice Lake and Tiger Lake MSR uncore support perf/x86/intel/uncore: Support PCIe3 unit on Snow Ridge perf/x86/intel/uncore: Generic support for the PCI sub driver perf/x86/intel/uncore: Factor out uncore_pci_pmu_unregister() perf/x86/intel/uncore: Factor out uncore_pci_pmu_register() perf/x86/intel/uncore: Factor out uncore_pci_find_dev_pmu() perf/x86/intel/uncore: Factor out uncore_pci_get_dev_die_info() perf/amd/uncore: Inform the user how many counters each uncore PMU has ... |
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dd502a8107 |
This tree introduces static_call(), which is the idea of static_branch()
applied to indirect function calls. Remove a data load (indirection) by modifying the text. They give the flexibility of function pointers, but with better performance. (This is especially important for cases where retpolines would otherwise be used, as retpolines can be pretty slow.) API overview: DECLARE_STATIC_CALL(name, func); DEFINE_STATIC_CALL(name, func); DEFINE_STATIC_CALL_NULL(name, typename); static_call(name)(args...); static_call_cond(name)(args...); static_call_update(name, func); x86 is supported via text patching, otherwise basic indirect calls are used, with function pointers. There's a second variant using inline code patching, inspired by jump-labels, implemented on x86 as well. The new APIs are utilized in the x86 perf code, a heavy user of function pointers, where static calls speed up the PMU handler by 4.2% (!). The generic implementation is not really excercised on other architectures, outside of the trivial test_static_call_init() self-test. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+EfAQRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iEAw//divHeVCJnHhV+YBbuI9ROUsERkzu8VhK O1DEmW68Fvj7pszT8NZsMjtkt97ZtxDRK7aCJiiup0eItG9qCJ8lpCLb84ZbizHV HhCbhBLrpxSvTrWlQnkgP1OkPAbtoryIjVlZzWhjye2MY8UEbVnZWyviBolbAAxH Fk1Yi56fIMu19GO+9Ohzy9E2VDnVEH1iMx5YWoLD2H88Qbq/yEMP+U2tIj8hIVKT Y/jdogihNXRIau6QB+YPfDPisdty+RHxfU7zct4Rv8cFF5ylglZB5fD34C3sUQF2 WqsaYz7zjUj9f02F8pw8hIaAT7InzArPhlNVITxf2oMfmdrNqBptnSCddZqCJLvv oDGew21k50Zcbqkv9amclpxXH5tTpRvJeqit2pz/85GMeqBRuhzHUAkCpht5YA73 qJsHWS3z+qIxKi0tDbhDJswuwa51q5sgdUUwo1uCr3wT3DGDlqNhCAZBzX14dcty 0shDSbv13TCwqAcb7asPzEoPwE15cwa+x+viGEIL901pyZKyQYjs/abDU26It3BW roWRkuVJZ9/QMdZJs1v7kaXw1L8YiKIDkBgke+xbfrDwEvvjudQkl2LUL66DB11j RJU3GyxKClvdY06SSRh/H13fqZLNKh1JZ0nPEWSTJECDFN9zcDjrDrod/7PFOcpY NAlawLoGG+s= =JvpF -----END PGP SIGNATURE----- Merge tag 'core-static_call-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull static call support from Ingo Molnar: "This introduces static_call(), which is the idea of static_branch() applied to indirect function calls. Remove a data load (indirection) by modifying the text. They give the flexibility of function pointers, but with better performance. (This is especially important for cases where retpolines would otherwise be used, as retpolines can be pretty slow.) API overview: DECLARE_STATIC_CALL(name, func); DEFINE_STATIC_CALL(name, func); DEFINE_STATIC_CALL_NULL(name, typename); static_call(name)(args...); static_call_cond(name)(args...); static_call_update(name, func); x86 is supported via text patching, otherwise basic indirect calls are used, with function pointers. There's a second variant using inline code patching, inspired by jump-labels, implemented on x86 as well. The new APIs are utilized in the x86 perf code, a heavy user of function pointers, where static calls speed up the PMU handler by 4.2% (!). The generic implementation is not really excercised on other architectures, outside of the trivial test_static_call_init() self-test" * tag 'core-static_call-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) static_call: Fix return type of static_call_init tracepoint: Fix out of sync data passing by static caller tracepoint: Fix overly long tracepoint names x86/perf, static_call: Optimize x86_pmu methods tracepoint: Optimize using static_call() static_call: Allow early init static_call: Add some validation static_call: Handle tail-calls static_call: Add static_call_cond() x86/alternatives: Teach text_poke_bp() to emulate RET static_call: Add simple self-test for static calls x86/static_call: Add inline static call implementation for x86-64 x86/static_call: Add out-of-line static call implementation static_call: Avoid kprobes on inline static_call()s static_call: Add inline static call infrastructure static_call: Add basic static call infrastructure compiler.h: Make __ADDRESSABLE() symbol truly unique jump_label,module: Fix module lifetime for __jump_label_mod_text_reserved() module: Properly propagate MODULE_STATE_COMING failure module: Fix up module_notifier return values ... |
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ed016af52e |
These are the locking updates for v5.10:
- Add deadlock detection for recursive read-locks. The rationale is outlined in: |
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edaa5ddf38 |
Scheduler changes for v5.10:
- Reorganize & clean up the SD* flags definitions and add a bunch of sanity checks. These new checks caught quite a few bugs or at least inconsistencies, resulting in another set of patches. - Rseq updates, add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ - Add a new tracepoint to improve CPU capacity tracking - Improve overloaded SMP system load-balancing behavior - Tweak SMT balancing - Energy-aware scheduling updates - NUMA balancing improvements - Deadline scheduler fixes and improvements - CPU isolation fixes - Misc cleanups, simplifications and smaller optimizations. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+EWRERHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hV8A/7BB0nt/zYVZ8Z3Di8V0b9hMtr0d1xtRM5 ZAvg4hcZl/fVgobFndxBw6KdlK8lSce9Mcq+bTTWeD46CS13cK5Vrpiaf7x7Q00P m8YHeYEH13ME0pbBrhDoRCR4XzfXukzjkUl7LiyrTekAvRUtFikJ/uKl8MeJtYGZ gANEkadqforxUW0v45iUEGepmCWAl8hSlSMb2mDKsVhw4DFMD+px0EBmmA0VDqjE e0rkh6dEoUVNqlic2KoaXULld1rLg1xiaOcLUbTAXnucfhmuv5p/H11AC4ABuf+s 7d0zLrLEfZrcLJkthYxfMHs7DYMtARiQM9Db/a5hAq9Af4Z2bvvVAaHt3gCGvkV1 llB6BB2yWCki9Qv7oiGOAhANnyJHG/cU4r6WwMuHdlYi4dFT/iN5qkOMUL1IrDgi a6ZzvECChXBeisQXHSlMd8Y5O+j0gRvDR7E18z2q0/PlmO8PGJq4w34mEWveWIg3 LaVF16bmvaARuNFJTQH/zaHhjqVQANSMx5OIv9swp0OkwvQkw21ICYHG0YxfzWCr oa/FESEpOL9XdYp8UwMPI0bmVIsEfx79pmDMF3zInYTpJpwMUhV2yjHE8uYVMqEf 7U8rZv7gdbZ2us38Gjf2l73hY+recp/GrgZKnk0R98OUeMk1l/iVP6dwco6ITUV5 czGmKlIB1ec= =bXy6 -----END PGP SIGNATURE----- Merge tag 'sched-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: - reorganize & clean up the SD* flags definitions and add a bunch of sanity checks. These new checks caught quite a few bugs or at least inconsistencies, resulting in another set of patches. - rseq updates, add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ - add a new tracepoint to improve CPU capacity tracking - improve overloaded SMP system load-balancing behavior - tweak SMT balancing - energy-aware scheduling updates - NUMA balancing improvements - deadline scheduler fixes and improvements - CPU isolation fixes - misc cleanups, simplifications and smaller optimizations * tag 'sched-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) sched/deadline: Unthrottle PI boosted threads while enqueuing sched/debug: Add new tracepoint to track cpu_capacity sched/fair: Tweak pick_next_entity() rseq/selftests: Test MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ rseq/selftests,x86_64: Add rseq_offset_deref_addv() rseq/membarrier: Add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ sched/fair: Use dst group while checking imbalance for NUMA balancer sched/fair: Reduce busy load balance interval sched/fair: Minimize concurrent LBs between domain level sched/fair: Reduce minimal imbalance threshold sched/fair: Relax constraint on task's load during load balance sched/fair: Remove the force parameter of update_tg_load_avg() sched/fair: Fix wrong cpu selecting from isolated domain sched: Remove unused inline function uclamp_bucket_base_value() sched/rt: Disable RT_RUNTIME_SHARE by default sched/deadline: Fix stale throttling on de-/boosted tasks sched/numa: Use runnable_avg to classify node sched/topology: Move sd_flag_debug out of #ifdef CONFIG_SYSCTL MAINTAINERS: Add myself as SCHED_DEADLINE reviewer sched/topology: Move SD_DEGENERATE_GROUPS_MASK out of linux/sched/topology.h ... |
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cc7343724e |
Surgery of the MSI interrupt handling to prepare the support of upcoming
devices which require non-PCI based MSI handling. - Cleanup historical leftovers all over the place - Rework the code to utilize more core functionality - Wrap XEN PCI/MSI interrupts into an irqdomain to make irqdomain assignment to PCI devices possible. - Assign irqdomains to PCI devices at initialization time which allows to utilize the full functionality of hierarchical irqdomains. - Remove arch_.*_msi_irq() functions from X86 and utilize the irqdomain which is assigned to the device for interrupt management. - Make the arch_.*_msi_irq() support conditional on a config switch and let the last few users select it. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl+EUxcTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoagLEACGp5U7a4mk24GsOZJDhrua1PHR/fhb enn/5yOPpxDXdYmtFHIjV5qrNjDTV/WqDlI96KOi+oinG1Eoj0O/MA1AcSRhp6nf jVdAuK1X0DHDUTEeTAP0JFwqd2j0KlIOphBrIMgeWIf1CRKlYiJaO+ioF9fKgwZ/ /HigOTSykGYMPggm3JXnWTWtJkKSGFxeADBvVHt5RpVmbWtrI4YoSBxKEMtvjyeM 5+GsqbCad1CnFYTN74N+QWVGmgGnUWGEzWsPYnJ9hW+yyjad1kWx3n6NcCWhssaC E4vAXl6JuCPntL7jBFkbfUkQsgq12ThMZYWpCq8pShJA9O2tDKkxIGasHWrIt4cz nYrESiv6hM7edjtOvBc086Gd0A2EyGOM879goHyaNVaTO4rI6jfZG7PlW1HHWibS mf/bdTXBtULGNgEt7T8Qnb8sZ+D01WqzLrq/wm645jIrTzvNHUEpOhT1aH/g4TFQ cNHD5PcM9OTmiBir9srNd47+1s2mpfwdMYHKBt2QgiXMO8fRgdtr6WLQE4vJjmG8 sA0yGGsgdTKeg2wW1ERF1pWL0Lt05Iaa42Skm0D3BwcOG2n5ltkBHzVllto9cTUh kIldAOgxGE6QeCnnlrnbHz5mvzt/3Ih/PIKqPSUAC94Kx1yvVHRYuOvDExeO8DFB P+f0TkrscZObSg== =JlqV -----END PGP SIGNATURE----- Merge tag 'x86-irq-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 irq updates from Thomas Gleixner: "Surgery of the MSI interrupt handling to prepare the support of upcoming devices which require non-PCI based MSI handling: - Cleanup historical leftovers all over the place - Rework the code to utilize more core functionality - Wrap XEN PCI/MSI interrupts into an irqdomain to make irqdomain assignment to PCI devices possible. - Assign irqdomains to PCI devices at initialization time which allows to utilize the full functionality of hierarchical irqdomains. - Remove arch_.*_msi_irq() functions from X86 and utilize the irqdomain which is assigned to the device for interrupt management. - Make the arch_.*_msi_irq() support conditional on a config switch and let the last few users select it" * tag 'x86-irq-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits) PCI: MSI: Fix Kconfig dependencies for PCI_MSI_ARCH_FALLBACKS x86/apic/msi: Unbreak DMAR and HPET MSI iommu/amd: Remove domain search for PCI/MSI iommu/vt-d: Remove domain search for PCI/MSI[X] x86/irq: Make most MSI ops XEN private x86/irq: Cleanup the arch_*_msi_irqs() leftovers PCI/MSI: Make arch_.*_msi_irq[s] fallbacks selectable x86/pci: Set default irq domain in pcibios_add_device() iommm/amd: Store irq domain in struct device iommm/vt-d: Store irq domain in struct device x86/xen: Wrap XEN MSI management into irqdomain irqdomain/msi: Allow to override msi_domain_alloc/free_irqs() x86/xen: Consolidate XEN-MSI init x86/xen: Rework MSI teardown x86/xen: Make xen_msi_init() static and rename it to xen_hvm_msi_init() PCI/MSI: Provide pci_dev_has_special_msi_domain() helper PCI_vmd_Mark_VMD_irqdomain_with_DOMAIN_BUS_VMD_MSI irqdomain/msi: Provide DOMAIN_BUS_VMD_MSI x86/irq: Initialize PCI/MSI domain at PCI init time x86/pci: Reducde #ifdeffery in PCI init code ... |
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c457cc800e |
Updates for the interrupt subsystem:
Core: - Allow trimming of interrupt hierarchy to support odd hardware setups where only a subset of the interrupts requires the full hierarchy. - Allow the retrigger mechanism to follow a hierarchy to simplify driver code. - Provide a mechanism to force enable wakeup interrrupts on suspend. - More infrastructure to handle IPIs in the core code Architectures: - Convert ARM/ARM64 IPI handling to utilize the interrupt core code. Drivers: - The usual pile of new interrupt chips (MStar, Actions Owl, TI PRUSS, Designware ICTL) - ARM(64) IPI related conversions - Wakeup support for Qualcom PDC - Prevent hierarchy corruption in the NVIDIA Tegra driver - The usual small fixes, improvements and cleanups all over the place. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl+ENDsTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoTyXD/9oGq37/zjpCggtRWdTKGtKvndjodqt 82zTZ1eSukDSE3UoT7PL8cRQ/4MnRZ7Ke+Iidd2uUbWADfJN28+4d26wN/aYYlX7 HmI/zowBgK6CJweynHYEF9/C8g2v2SRg5HJCJSOSuVLnTKNLc/aHX5rc/FZXGd6v K1BOHJFlzoU1w+OnFfoH4TeJdoKhzXi/T5zJFFtadOVIeCONxTEs4Fxkej2cuBsu Nz38WfkPdOnyrVIPhA10KgigczcRkKXU0ot/bNH4s9j2ZIGdgtq3UIbH+itleW2S bSWSShnlhSMS918pZNcR49iRyP2CsM+JxcHAmcbA6VPBpKbk2Pb5Zta8g08TZm+X XxaDwPFoR4BG00B0L4uygEuHcE89mDy0gCFog0zG7sU+LuY4FYQSSMUqwIC4i/HJ DJdWrVqnNHJFCS6wvBl9NO0lyuUrn2be2/IzUtZ3d0xbA0uJXfvI4WgFrbunoPEU zgHblQN5nkDLWujjzC10C9vmTi1xxP6FiYcrMScZZ5US0JlHaptkoPOhs82KYQvV 0DPk06XGWnJMc27+MQYVIMDhQggi3It9pgDRhoyz9Xpgn9fmhhp0goL7KnFk9Hbr BKFdW4VBbU0PZacoI6Q186lTQZRptTKfREL+bHvUL2Xyb0RO6nerBPzE5Wxwb2vW PmHgFezXDVHbIQ== =1ewL -----END PGP SIGNATURE----- Merge tag 'irq-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "Updates for the interrupt subsystem: Core: - Allow trimming of interrupt hierarchy to support odd hardware setups where only a subset of the interrupts requires the full hierarchy. - Allow the retrigger mechanism to follow a hierarchy to simplify driver code. - Provide a mechanism to force enable wakeup interrrupts on suspend. - More infrastructure to handle IPIs in the core code Architectures: - Convert ARM/ARM64 IPI handling to utilize the interrupt core code. Drivers: - The usual pile of new interrupt chips (MStar, Actions Owl, TI PRUSS, Designware ICTL) - ARM(64) IPI related conversions - Wakeup support for Qualcom PDC - Prevent hierarchy corruption in the NVIDIA Tegra driver - The usual small fixes, improvements and cleanups all over the place" * tag 'irq-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (59 commits) dt-bindings: interrupt-controller: Add MStar interrupt controller irqchip/irq-mst: Add MStar interrupt controller support soc/tegra: pmc: Don't create fake interrupt hierarchy levels soc/tegra: pmc: Allow optional irq parent callbacks gpio: tegra186: Allow optional irq parent callbacks genirq/irqdomain: Allow partial trimming of irq_data hierarchy irqchip/qcom-pdc: Reset PDC interrupts during init irqchip/qcom-pdc: Set IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag pinctrl: qcom: Set IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag genirq/PM: Introduce IRQCHIP_ENABLE_WAKEUP_ON_SUSPEND flag pinctrl: qcom: Use return value from irq_set_wake() call pinctrl: qcom: Set IRQCHIP_SET_TYPE_MASKED and IRQCHIP_MASK_ON_SUSPEND flags ARM: Handle no IPI being registered in show_ipi_list() MAINTAINERS: Add entries for Actions Semi Owl SIRQ controller irqchip: Add Actions Semi Owl SIRQ controller dt-bindings: interrupt-controller: Add Actions SIRQ controller binding dt-bindings: dw-apb-ictl: Update binding to describe use as primary interrupt controller irqchip/dw-apb-ictl: Add primary interrupt controller support irqchip/dw-apb-ictl: Refactor priot to introducing hierarchical irq domains genirq: Add stub for set_handle_irq() when !GENERIC_IRQ_MULTI_HANDLER ... |
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f5f59336a9 |
Updates for timekeeping, timers and related drivers:
Core: - Early boot support for the NMI safe timekeeper by utilizing local_clock() up to the point where timekeeping is initialized. This allows printk() to store multiple timestamps in the ringbuffer which is useful for coordinating dmesg information across a fleet of machines. - Provide a multi-timestamp accessor for printk() - Make timer init more robust by checking for invalid timer flags. - Comma vs. semicolon fixes Drivers: - Support for new platforms in existing drivers (SP804 and Renesas CMT) - Comma vs. semicolon fixes -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl+ETs4THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoY/SEACva6YyL5F+GWT3aq1JBkQm55I0BSTS KD6XKeT765c88wB+CGzi/huYtSlL9lUonZ+8h2x/Yd9ObYEBqKANWUpzbPFM3aMd 5UbUHE9rIAbkAm7Ry1/GAQHVLCI/qYXZwaWDi37iHIplXwgY5jSr8AbqHsSBqM92 e1GMrLo6dxKqVhqPmHYCiZYPNH/15KIgzzrM8Mx7/pxHZaF7rSF/sjFAQObb4UOM 3ec9dqaKLAmQD04gHG5Y0YDttqHtii1+Gzqi9886Sv9xIvlM020J4elrKQqFnuV3 GGXRL4Rkhr4rXCJlYYTxE+7kQ7SVQDaztnQEqQCYMi8+DlmsdZsVUU3stsIA8SoF T6cC94g0ngoGbtA9Eb+WDT4eIlRPO+Ah/CsMnt78DkgNkI5Vc6U4cVrsWmGUtUDC oi/5gJeM8gP/UIzA+N+n3NNpQjC6PaVS0wIQQt/wOpBY6v9GOrcLxwJCpMujW8XG th8hXxANimAnyrI4osQhiYrY1zLnmJ7QB1PuuTkb8tyipGg+xkX68qD+oi6tKW+v Fo+aMbxv5sadyEA/yqxKLTpnTaVG7bexqrnkFBOxzBS2l3/WLXG4rWN/xYhDWAnm 4xc5lDOEwSGKk+saU9rs4x1TsLi02Fn++DwuGV0GIqT0qPX+jWsNpVTwE43epaDO Cpw7Cx+iGqsfkg== =h6YX -----END PGP SIGNATURE----- Merge tag 'timers-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timekeeping updates from Thomas Gleixner: "Updates for timekeeping, timers and related drivers: Core: - Early boot support for the NMI safe timekeeper by utilizing local_clock() up to the point where timekeeping is initialized. This allows printk() to store multiple timestamps in the ringbuffer which is useful for coordinating dmesg information across a fleet of machines. - Provide a multi-timestamp accessor for printk() - Make timer init more robust by checking for invalid timer flags. - Comma vs semicolon fixes Drivers: - Support for new platforms in existing drivers (SP804 and Renesas CMT) - Comma vs semicolon fixes * tag 'timers-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/armada-370-xp: Use semicolons rather than commas to separate statements clocksource/drivers/mps2-timer: Use semicolons rather than commas to separate statements timers: Mask invalid flags in do_init_timer() clocksource/drivers/sp804: Enable Hisilicon sp804 timer 64bit mode clocksource/drivers/sp804: Add support for Hisilicon sp804 timer clocksource/drivers/sp804: Support non-standard register offset clocksource/drivers/sp804: Prepare for support non-standard register offset clocksource/drivers/sp804: Remove a mismatched comment clocksource/drivers/sp804: Delete the leading "__" of some functions clocksource/drivers/sp804: Remove unused sp804_timer_disable() and timer-sp804.h clocksource/drivers/sp804: Cleanup clk_get_sys() dt-bindings: timer: renesas,cmt: Document r8a774e1 CMT support dt-bindings: timer: renesas,cmt: Document r8a7742 CMT support alarmtimer: Convert comma to semicolon timekeeping: Provide multi-timestamp accessor to NMI safe timekeeper timekeeping: Utilize local_clock() for NMI safe timekeeper during early boot |
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20d49bfcc3 |
A small set of updates for debug objects:
- Make all debug object descriptors constant. There is no reason to have them writeable. - Free the per CPU object pool after CPU unplug to avoid memory waste. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl+EMM8THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYobvLD/95P1eqk5Hku2uHeHowj9t4PVqk68Gq 71rJTj/x32JnGVsNFfwoqm0u8CueAitT1Id5aIjiMAGK2eH83StwdfqFjdHsitwl 4zH6qywjjgq86jOSXXUQ2TSyYjlL7l2Pr8jwEZkTXUrShZyHAOvD9oW3KwlyV88H QXiTGFAm4aAaFctgGlbVafxtp1IJkS+FzFT1/cyPV064d3uGjX6maKwKjssO/8Bv WLzPuyOKh7IoEMfyFEXw3Ks3GK3Fo9Rkm4+CNLxjWy7DX7tY2Xvu4kuPqQ0dyn31 zzxJHOESLOjtw8w0vSEKpuNyIfL/66/MF8p4CXzkUWQTa9h26yos+mDnSzxth++d ZERCpx7udTG3BbteJ8ZEf3/QyH6kJw9RccDET180/CvhBTHELEsroy9qOfDMJkgt RODtwh+2+O0zqUGjbqEd+PTmkU5p0UwIWAI9t7pic5Dntse7stRwotDtI0FGNnF1 aj/4ZkTb+lq3EF/x9xh6Hw/SfcVGtmySeMaPlaj9fgq39dtTPIspYeI5GieZlE0s 1ZfoRSgWA+/K9+4iTsuGvTwXnLhsRYVZl+GIkzeG2FL3euK0t+vaIvIbE9IDHdsS mgEFaUXwIosHOfn+8f9KWl6YupBtT/4PyPVu5DseREl4up0W6s26aamM1Ml16A8x JUNS/oa+cGpI4A== =BP3+ -----END PGP SIGNATURE----- Merge tag 'core-debugobjects-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull debugobjects updates from Thomas Gleixner: "A small set of updates for debug objects: - Make all debug object descriptors constant. There is no reason to have them writeable. - Free the per CPU object pool after CPU unplug to avoid memory waste" * tag 'core-debugobjects-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: debugobjects: Free per CPU pool after CPU unplug treewide: Make all debug_obj_descriptors const debugobjects: Allow debug_obj_descr to be const |
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f94ab23113 |
* Misc minor cleanups.
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAl+ENW0ACgkQEsHwGGHe VUrWjw/+O0S/Bf7RQ2OIDnaHGo5u9k+T+FiklYtTO4klYqtfNEt/DFWVOIThVXBQ ma4I8Hspj+zUzlq2kqSeqJ2PiikTxRNDqkCUwZhqEFgbXS6/pt8VXXdPniKjeXge ZE4lcD1RIyDFxzVlKvVaYt1KryZZVVSRqRIChejLrujN23fI6riWfa0W4Bq54J6m fdiujuDJQ9oroak36dF5Ah6g4g8gL8hBLU9Oyzla9V+1O3GSZuDlwTgDsxZZkmC5 LN4spxwd9tOXOmWhbH7vFfRtQL79KUHkHbUuUvZzZsJ/zs85bxhMa+fUAfjWAEja brMpD1GZKOcjUM7xzQ9HngMcKD8lWmlsTBTAO9drD89Z949ntjIA4uCY3d3RTJ1q NoYCV8Xw+8Q8e+zjnMW0tph39LCUEeuccT7t09XP5IF5UEXi5T5S14WoCu5Shnt9 VTQ44NrAxpP7ZNWMpBTaxmr3aXABbdgnvDIxqrohqgQnCnPkWlBJ9FdKj8sQ3y9B K010ihIb1pWnmTyKGIC3GOWNjwtCpqz9z3gya76tI7EzAejVS6yUqwMohjaWq6JZ Tz/TtTSTUyczKiCCqoOf7P+5LKrhxjWS8IVBeMqMTeN7osCCIT69U+cox1Ih3DST pBfy7R3+FXKLHVi/iQv8E+fl3//pTGppKv4MM/wab0E6L+KhqEo= =NYxb -----END PGP SIGNATURE----- Merge tag 'x86_cleanups_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cleanups from Borislav Petkov: "Misc minor cleanups" * tag 'x86_cleanups_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry: Fix typo in comments for syscall_enter_from_user_mode() x86/resctrl: Fix spelling in user-visible warning messages x86/entry/64: Do not include inst.h in calling.h x86/mpparse: Remove duplicate io_apic.h include |
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6734e20e39 |
arm64 updates for 5.10
- Userspace support for the Memory Tagging Extension introduced by Armv8.5. Kernel support (via KASAN) is likely to follow in 5.11. - Selftests for MTE, Pointer Authentication and FPSIMD/SVE context switching. - Fix and subsequent rewrite of our Spectre mitigations, including the addition of support for PR_SPEC_DISABLE_NOEXEC. - Support for the Armv8.3 Pointer Authentication enhancements. - Support for ASID pinning, which is required when sharing page-tables with the SMMU. - MM updates, including treating flush_tlb_fix_spurious_fault() as a no-op. - Perf/PMU driver updates, including addition of the ARM CMN PMU driver and also support to handle CPU PMU IRQs as NMIs. - Allow prefetchable PCI BARs to be exposed to userspace using normal non-cacheable mappings. - Implementation of ARCH_STACKWALK for unwinding. - Improve reporting of unexpected kernel traps due to BPF JIT failure. - Improve robustness of user-visible HWCAP strings and their corresponding numerical constants. - Removal of TEXT_OFFSET. - Removal of some unused functions, parameters and prototypes. - Removal of MPIDR-based topology detection in favour of firmware description. - Cleanups to handling of SVE and FPSIMD register state in preparation for potential future optimisation of handling across syscalls. - Cleanups to the SDEI driver in preparation for support in KVM. - Miscellaneous cleanups and refactoring work. -----BEGIN PGP SIGNATURE----- iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAl+AUXMQHHdpbGxAa2Vy bmVsLm9yZwAKCRC3rHDchMFjNFc1B/4q2Kabe+pPu7s1f58Q+OTaEfqcr3F1qh27 F1YpFZUYxg0GPfPsFrnbJpo5WKo7wdR9ceI9yF/GHjs7A/MSoQJis3pG6SlAd9c0 nMU5tCwhg9wfq6asJtl0/IPWem6cqqhdzC6m808DjeHuyi2CCJTt0vFWH3OeHEhG cfmLfaSNXOXa/MjEkT8y1AXJ/8IpIpzkJeCRA1G5s18PXV9Kl5bafIo9iqyfKPLP 0rJljBmoWbzuCSMc81HmGUQI4+8KRp6HHhyZC/k0WEVgj3LiumT7am02bdjZlTnK BeNDKQsv2Jk8pXP2SlrI3hIUTz0bM6I567FzJEokepvTUzZ+CVBi =9J8H -----END PGP SIGNATURE----- Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "There's quite a lot of code here, but much of it is due to the addition of a new PMU driver as well as some arm64-specific selftests which is an area where we've traditionally been lagging a bit. In terms of exciting features, this includes support for the Memory Tagging Extension which narrowly missed 5.9, hopefully allowing userspace to run with use-after-free detection in production on CPUs that support it. Work is ongoing to integrate the feature with KASAN for 5.11. Another change that I'm excited about (assuming they get the hardware right) is preparing the ASID allocator for sharing the CPU page-table with the SMMU. Those changes will also come in via Joerg with the IOMMU pull. We do stray outside of our usual directories in a few places, mostly due to core changes required by MTE. Although much of this has been Acked, there were a couple of places where we unfortunately didn't get any review feedback. Other than that, we ran into a handful of minor conflicts in -next, but nothing that should post any issues. Summary: - Userspace support for the Memory Tagging Extension introduced by Armv8.5. Kernel support (via KASAN) is likely to follow in 5.11. - Selftests for MTE, Pointer Authentication and FPSIMD/SVE context switching. - Fix and subsequent rewrite of our Spectre mitigations, including the addition of support for PR_SPEC_DISABLE_NOEXEC. - Support for the Armv8.3 Pointer Authentication enhancements. - Support for ASID pinning, which is required when sharing page-tables with the SMMU. - MM updates, including treating flush_tlb_fix_spurious_fault() as a no-op. - Perf/PMU driver updates, including addition of the ARM CMN PMU driver and also support to handle CPU PMU IRQs as NMIs. - Allow prefetchable PCI BARs to be exposed to userspace using normal non-cacheable mappings. - Implementation of ARCH_STACKWALK for unwinding. - Improve reporting of unexpected kernel traps due to BPF JIT failure. - Improve robustness of user-visible HWCAP strings and their corresponding numerical constants. - Removal of TEXT_OFFSET. - Removal of some unused functions, parameters and prototypes. - Removal of MPIDR-based topology detection in favour of firmware description. - Cleanups to handling of SVE and FPSIMD register state in preparation for potential future optimisation of handling across syscalls. - Cleanups to the SDEI driver in preparation for support in KVM. - Miscellaneous cleanups and refactoring work" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (148 commits) Revert "arm64: initialize per-cpu offsets earlier" arm64: random: Remove no longer needed prototypes arm64: initialize per-cpu offsets earlier kselftest/arm64: Check mte tagged user address in kernel kselftest/arm64: Verify KSM page merge for MTE pages kselftest/arm64: Verify all different mmap MTE options kselftest/arm64: Check forked child mte memory accessibility kselftest/arm64: Verify mte tag inclusion via prctl kselftest/arm64: Add utilities and a test to validate mte memory perf: arm-cmn: Fix conversion specifiers for node type perf: arm-cmn: Fix unsigned comparison to less than zero arm64: dbm: Invalidate local TLB when setting TCR_EL1.HD arm64: mm: Make flush_tlb_fix_spurious_fault() a no-op arm64: Add support for PR_SPEC_DISABLE_NOEXEC prctl() option arm64: Pull in task_stack_page() to Spectre-v4 mitigation code KVM: arm64: Allow patching EL2 vectors even with KASLR is not enabled arm64: Get rid of arm64_ssbd_state KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state() KVM: arm64: Get rid of kvm_arm_have_ssbd() KVM: arm64: Simplify handling of ARCH_WORKAROUND_2 ... |
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fdf09ab887 |
module: statically initialize init section freeing data
Corentin hit the following workqueue warning when running with CRYPTO_MANAGER_EXTRA_TESTS: WARNING: CPU: 2 PID: 147 at kernel/workqueue.c:1473 __queue_work+0x3b8/0x3d0 Modules linked in: ghash_generic CPU: 2 PID: 147 Comm: modprobe Not tainted 5.6.0-rc1-next-20200214-00068-g166c9264f0b1-dirty #545 Hardware name: Pine H64 model A (DT) pc : __queue_work+0x3b8/0x3d0 Call trace: __queue_work+0x3b8/0x3d0 queue_work_on+0x6c/0x90 do_init_module+0x188/0x1f0 load_module+0x1d00/0x22b0 I wasn't able to reproduce on x86 or rpi 3b+. This is WARN_ON(!list_empty(&work->entry)) from __queue_work(), and it happens because the init_free_wq work item isn't initialized in time for a crypto test that requests the gcm module. Some crypto tests were recently moved earlier in boot as explained in commit |
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f91072ed1b |
perf/core: Fix race in the perf_mmap_close() function
There's a possible race in perf_mmap_close() when checking ring buffer's
mmap_count refcount value. The problem is that the mmap_count check is
not atomic because we call atomic_dec() and atomic_read() separately.
perf_mmap_close:
...
atomic_dec(&rb->mmap_count);
...
if (atomic_read(&rb->mmap_count))
goto out_put;
<ring buffer detach>
free_uid
out_put:
ring_buffer_put(rb); /* could be last */
The race can happen when we have two (or more) events sharing same ring
buffer and they go through atomic_dec() and then they both see 0 as refcount
value later in atomic_read(). Then both will go on and execute code which
is meant to be run just once.
The code that detaches ring buffer is probably fine to be executed more
than once, but the problem is in calling free_uid(), which will later on
demonstrate in related crashes and refcount warnings, like:
refcount_t: addition on 0; use-after-free.
...
RIP: 0010:refcount_warn_saturate+0x6d/0xf
...
Call Trace:
prepare_creds+0x190/0x1e0
copy_creds+0x35/0x172
copy_process+0x471/0x1a80
_do_fork+0x83/0x3a0
__do_sys_wait4+0x83/0x90
__do_sys_clone+0x85/0xa0
do_syscall_64+0x5b/0x1e0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Using atomic decrease and check instead of separated calls.
Tested-by: Michael Petlan <mpetlan@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Wade Mealing <wmealing@redhat.com>
Fixes:
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