mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 22:02:02 +00:00
42494 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Phil Sutter
|
ea078ae910 |
netfilter: nf_tables: Audit log rule reset
Resetting rules' stateful data happens outside of the transaction logic,
so 'get' and 'dump' handlers have to emit audit log entries themselves.
Fixes:
|
||
|
Phil Sutter
|
7e9be1124d |
netfilter: nf_tables: Audit log setelem reset
Since set element reset is not integrated into nf_tables' transaction
logic, an explicit log call is needed, similar to NFT_MSG_GETOBJ_RESET
handling.
For the sake of simplicity, catchall element reset will always generate
a dedicated log entry. This relieves nf_tables_dump_set() from having to
adjust the logged element count depending on whether a catchall element
was found or not.
Fixes:
|
||
|
Linus Torvalds
|
bd6c11bc43 |
Networking changes for 6.6.
Core
----
- Increase size limits for to-be-sent skb frag allocations. This
allows tun, tap devices and packet sockets to better cope with large
writes operations.
- Store netdevs in an xarray, to simplify iterating over netdevs.
- Refactor nexthop selection for multipath routes.
- Improve sched class lifetime handling.
- Add backup nexthop ID support for bridge.
- Implement drop reasons support in openvswitch.
- Several data races annotations and fixes.
- Constify the sk parameter of routing functions.
- Prepend kernel version to netconsole message.
Protocols
---------
- Implement support for TCP probing the peer being under memory
pressure.
- Remove hard coded limitation on IPv6 specific info placement
inside the socket struct.
- Get rid of sysctl_tcp_adv_win_scale and use an auto-estimated
per socket scaling factor.
- Scaling-up the IPv6 expired route GC via a separated list of
expiring routes.
- In-kernel support for the TLS alert protocol.
- Better support for UDP reuseport with connected sockets.
- Add NEXT-C-SID support for SRv6 End.X behavior, reducing the SR
header size.
- Get rid of additional ancillary per MPTCP connection struct socket.
- Implement support for BPF-based MPTCP packet schedulers.
- Format MPTCP subtests selftests results in TAP.
- Several new SMC 2.1 features including unique experimental options,
max connections per lgr negotiation, max links per lgr negotiation.
BPF
---
- Multi-buffer support in AF_XDP.
- Add multi uprobe BPF links for attaching multiple uprobes
and usdt probes, which is significantly faster and saves extra fds.
- Implement an fd-based tc BPF attach API (TCX) and BPF link support on
top of it.
- Add SO_REUSEPORT support for TC bpf_sk_assign.
- Support new instructions from cpu v4 to simplify the generated code and
feature completeness, for x86, arm64, riscv64.
- Support defragmenting IPv(4|6) packets in BPF.
- Teach verifier actual bounds of bpf_get_smp_processor_id()
and fix perf+libbpf issue related to custom section handling.
- Introduce bpf map element count and enable it for all program types.
- Add a BPF hook in sys_socket() to change the protocol ID
from IPPROTO_TCP to IPPROTO_MPTCP to cover migration for legacy.
- Introduce bpf_me_mcache_free_rcu() and fix OOM under stress.
- Add uprobe support for the bpf_get_func_ip helper.
- Check skb ownership against full socket.
- Support for up to 12 arguments in BPF trampoline.
- Extend link_info for kprobe_multi and perf_event links.
Netfilter
---------
- Speed-up process exit by aborting ruleset validation if a
fatal signal is pending.
- Allow NLA_POLICY_MASK to be used with BE16/BE32 types.
Driver API
----------
- Page pool optimizations, to improve data locality and cache usage.
- Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() to avoid the need
for raw ioctl() handling in drivers.
- Simplify genetlink dump operations (doit/dumpit) providing them
the common information already populated in struct genl_info.
- Extend and use the yaml devlink specs to [re]generate the split ops.
- Introduce devlink selective dumps, to allow SF filtering SF based on
handle and other attributes.
- Add yaml netlink spec for netlink-raw families, allow route, link and
address related queries via the ynl tool.
- Remove phylink legacy mode support.
- Support offload LED blinking to phy.
- Add devlink port function attributes for IPsec.
New hardware / drivers
----------------------
- Ethernet:
- Broadcom ASP 2.0 (72165) ethernet controller
- MediaTek MT7988 SoC
- Texas Instruments AM654 SoC
- Texas Instruments IEP driver
- Atheros qca8081 phy
- Marvell 88Q2110 phy
- NXP TJA1120 phy
- WiFi:
- MediaTek mt7981 support
- Can:
- Kvaser SmartFusion2 PCI Express devices
- Allwinner T113 controllers
- Texas Instruments tcan4552/4553 chips
- Bluetooth:
- Intel Gale Peak
- Qualcomm WCN3988 and WCN7850
- NXP AW693 and IW624
- Mediatek MT2925
Drivers
-------
- Ethernet NICs:
- nVidia/Mellanox:
- mlx5:
- support UDP encapsulation in packet offload mode
- IPsec packet offload support in eswitch mode
- improve aRFS observability by adding new set of counters
- extends MACsec offload support to cover RoCE traffic
- dynamic completion EQs
- mlx4:
- convert to use auxiliary bus instead of custom interface logic
- Intel
- ice:
- implement switchdev bridge offload, even for LAG interfaces
- implement SRIOV support for LAG interfaces
- igc:
- add support for multiple in-flight TX timestamps
- Broadcom:
- bnxt:
- use the unified RX page pool buffers for XDP and non-XDP
- use the NAPI skb allocation cache
- OcteonTX2:
- support Round Robin scheduling HTB offload
- TC flower offload support for SPI field
- Freescale:
- add XDP_TX feature support
- AMD:
- ionic: add support for PCI FLR event
- sfc:
- basic conntrack offload
- introduce eth, ipv4 and ipv6 pedit offloads
- ST Microelectronics:
- stmmac: maximze PTP timestamping resolution
- Virtual NICs:
- Microsoft vNIC:
- batch ringing RX queue doorbell on receiving packets
- add page pool for RX buffers
- Virtio vNIC:
- add per queue interrupt coalescing support
- Google vNIC:
- add queue-page-list mode support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add port range matching tc-flower offload
- permit enslavement to netdevices with uppers
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- convert to phylink_pcs
- Renesas:
- r8A779fx: add speed change support
- rzn1: enables vlan support
- Ethernet PHYs:
- convert mv88e6xxx to phylink_pcs
- WiFi:
- Qualcomm Wi-Fi 7 (ath12k):
- extremely High Throughput (EHT) PHY support
- RealTek (rtl8xxxu):
- enable AP mode for: RTL8192FU, RTL8710BU (RTL8188GU),
RTL8192EU and RTL8723BU
- RealTek (rtw89):
- Introduce Time Averaged SAR (TAS) support
- Connector:
- support for event filtering
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Increase size limits for to-be-sent skb frag allocations. This
allows tun, tap devices and packet sockets to better cope with
large writes operations
- Store netdevs in an xarray, to simplify iterating over netdevs
- Refactor nexthop selection for multipath routes
- Improve sched class lifetime handling
- Add backup nexthop ID support for bridge
- Implement drop reasons support in openvswitch
- Several data races annotations and fixes
- Constify the sk parameter of routing functions
- Prepend kernel version to netconsole message
Protocols:
- Implement support for TCP probing the peer being under memory
pressure
- Remove hard coded limitation on IPv6 specific info placement inside
the socket struct
- Get rid of sysctl_tcp_adv_win_scale and use an auto-estimated per
socket scaling factor
- Scaling-up the IPv6 expired route GC via a separated list of
expiring routes
- In-kernel support for the TLS alert protocol
- Better support for UDP reuseport with connected sockets
- Add NEXT-C-SID support for SRv6 End.X behavior, reducing the SR
header size
- Get rid of additional ancillary per MPTCP connection struct socket
- Implement support for BPF-based MPTCP packet schedulers
- Format MPTCP subtests selftests results in TAP
- Several new SMC 2.1 features including unique experimental options,
max connections per lgr negotiation, max links per lgr negotiation
BPF:
- Multi-buffer support in AF_XDP
- Add multi uprobe BPF links for attaching multiple uprobes and usdt
probes, which is significantly faster and saves extra fds
- Implement an fd-based tc BPF attach API (TCX) and BPF link support
on top of it
- Add SO_REUSEPORT support for TC bpf_sk_assign
- Support new instructions from cpu v4 to simplify the generated code
and feature completeness, for x86, arm64, riscv64
- Support defragmenting IPv(4|6) packets in BPF
- Teach verifier actual bounds of bpf_get_smp_processor_id() and fix
perf+libbpf issue related to custom section handling
- Introduce bpf map element count and enable it for all program types
- Add a BPF hook in sys_socket() to change the protocol ID from
IPPROTO_TCP to IPPROTO_MPTCP to cover migration for legacy
- Introduce bpf_me_mcache_free_rcu() and fix OOM under stress
- Add uprobe support for the bpf_get_func_ip helper
- Check skb ownership against full socket
- Support for up to 12 arguments in BPF trampoline
- Extend link_info for kprobe_multi and perf_event links
Netfilter:
- Speed-up process exit by aborting ruleset validation if a fatal
signal is pending
- Allow NLA_POLICY_MASK to be used with BE16/BE32 types
Driver API:
- Page pool optimizations, to improve data locality and cache usage
- Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() to avoid the
need for raw ioctl() handling in drivers
- Simplify genetlink dump operations (doit/dumpit) providing them the
common information already populated in struct genl_info
- Extend and use the yaml devlink specs to [re]generate the split ops
- Introduce devlink selective dumps, to allow SF filtering SF based
on handle and other attributes
- Add yaml netlink spec for netlink-raw families, allow route, link
and address related queries via the ynl tool
- Remove phylink legacy mode support
- Support offload LED blinking to phy
- Add devlink port function attributes for IPsec
New hardware / drivers:
- Ethernet:
- Broadcom ASP 2.0 (72165) ethernet controller
- MediaTek MT7988 SoC
- Texas Instruments AM654 SoC
- Texas Instruments IEP driver
- Atheros qca8081 phy
- Marvell 88Q2110 phy
- NXP TJA1120 phy
- WiFi:
- MediaTek mt7981 support
- Can:
- Kvaser SmartFusion2 PCI Express devices
- Allwinner T113 controllers
- Texas Instruments tcan4552/4553 chips
- Bluetooth:
- Intel Gale Peak
- Qualcomm WCN3988 and WCN7850
- NXP AW693 and IW624
- Mediatek MT2925
Drivers:
- Ethernet NICs:
- nVidia/Mellanox:
- mlx5:
- support UDP encapsulation in packet offload mode
- IPsec packet offload support in eswitch mode
- improve aRFS observability by adding new set of counters
- extends MACsec offload support to cover RoCE traffic
- dynamic completion EQs
- mlx4:
- convert to use auxiliary bus instead of custom interface
logic
- Intel
- ice:
- implement switchdev bridge offload, even for LAG
interfaces
- implement SRIOV support for LAG interfaces
- igc:
- add support for multiple in-flight TX timestamps
- Broadcom:
- bnxt:
- use the unified RX page pool buffers for XDP and non-XDP
- use the NAPI skb allocation cache
- OcteonTX2:
- support Round Robin scheduling HTB offload
- TC flower offload support for SPI field
- Freescale:
- add XDP_TX feature support
- AMD:
- ionic: add support for PCI FLR event
- sfc:
- basic conntrack offload
- introduce eth, ipv4 and ipv6 pedit offloads
- ST Microelectronics:
- stmmac: maximze PTP timestamping resolution
- Virtual NICs:
- Microsoft vNIC:
- batch ringing RX queue doorbell on receiving packets
- add page pool for RX buffers
- Virtio vNIC:
- add per queue interrupt coalescing support
- Google vNIC:
- add queue-page-list mode support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add port range matching tc-flower offload
- permit enslavement to netdevices with uppers
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- convert to phylink_pcs
- Renesas:
- r8A779fx: add speed change support
- rzn1: enables vlan support
- Ethernet PHYs:
- convert mv88e6xxx to phylink_pcs
- WiFi:
- Qualcomm Wi-Fi 7 (ath12k):
- extremely High Throughput (EHT) PHY support
- RealTek (rtl8xxxu):
- enable AP mode for: RTL8192FU, RTL8710BU (RTL8188GU),
RTL8192EU and RTL8723BU
- RealTek (rtw89):
- Introduce Time Averaged SAR (TAS) support
- Connector:
- support for event filtering"
* tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1806 commits)
net: ethernet: mtk_wed: minor change in wed_{tx,rx}info_show
net: ethernet: mtk_wed: add some more info in wed_txinfo_show handler
net: stmmac: clarify difference between "interface" and "phy_interface"
r8152: add vendor/device ID pair for D-Link DUB-E250
devlink: move devlink_notify_register/unregister() to dev.c
devlink: move small_ops definition into netlink.c
devlink: move tracepoint definitions into core.c
devlink: push linecard related code into separate file
devlink: push rate related code into separate file
devlink: push trap related code into separate file
devlink: use tracepoint_enabled() helper
devlink: push region related code into separate file
devlink: push param related code into separate file
devlink: push resource related code into separate file
devlink: push dpipe related code into separate file
devlink: move and rename devlink_dpipe_send_and_alloc_skb() helper
devlink: push shared buffer related code into separate file
devlink: push port related code into separate file
devlink: push object register/unregister notifications into separate helpers
inet: fix IP_TRANSPARENT error handling
...
|
||
|
Linus Torvalds
|
815c24a085 |
linux-kselftest-kunit-6.6-rc1
This kunit update for Linux 6.6.rc1 consists of:
-- Adds support for running Rust documentation tests as KUnit tests
-- Makes init, str, sync, types doctests compilable/testable
-- Adds support for attributes API which include speed, modules
attributes, ability to filter and report attributes.
-- Adds support for marking tests slow using attributes API.
-- Adds attributes API documentation
-- Fixes to wild-memory-access bug in kunit_filter_suites() and
a possible memory leak in kunit_filter_suites()
-- Adds support for counting number of test suites in a module, list
action to kunit test modules, and test filtering on module tests.
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Merge tag 'linux-kselftest-kunit-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- add support for running Rust documentation tests as KUnit tests
- make init, str, sync, types doctests compilable/testable
- add support for attributes API which include speed, modules
attributes, ability to filter and report attributes
- add support for marking tests slow using attributes API
- add attributes API documentation
- fix a wild-memory-access bug in kunit_filter_suites() and a possible
memory leak in kunit_filter_suites()
- add support for counting number of test suites in a module, list
action to kunit test modules, and test filtering on module tests
* tag 'linux-kselftest-kunit-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits)
kunit: fix struct kunit_attr header
kunit: replace KUNIT_TRIGGER_STATIC_STUB maro with KUNIT_STATIC_STUB_REDIRECT
kunit: Allow kunit test modules to use test filtering
kunit: Make 'list' action available to kunit test modules
kunit: Report the count of test suites in a module
kunit: fix uninitialized variables bug in attributes filtering
kunit: fix possible memory leak in kunit_filter_suites()
kunit: fix wild-memory-access bug in kunit_filter_suites()
kunit: Add documentation of KUnit test attributes
kunit: add tests for filtering attributes
kunit: time: Mark test as slow using test attributes
kunit: memcpy: Mark tests as slow using test attributes
kunit: tool: Add command line interface to filter and report attributes
kunit: Add ability to filter attributes
kunit: Add module attribute
kunit: Add speed attribute
kunit: Add test attributes API structure
MAINTAINERS: add Rust KUnit files to the KUnit entry
rust: support running Rust documentation tests as KUnit ones
rust: types: make doctests compilable/testable
...
|
||
|
Linus Torvalds
|
ccc5e98177 |
Power management updates for 6.6-rc1
- Rework the menu and teo cpuidle governors to avoid calling
tick_nohz_get_sleep_length(), which is likely to become quite
expensive going forward, too often and improve making decisions
regarding whether or not to stop the scheduler tick in the teo
governor (Rafael Wysocki).
- Improve the performance of cpufreq_stats_create_table() in some
cases (Liao Chang).
- Fix two issues in the amd-pstate-ut cpufreq driver (Swapnil Sapkal).
- Use clamp() helper macro to improve the code readability in
cpufreq_verify_within_limits() (Liao Chang).
- Set stale CPU frequency to minimum in intel_pstate (Doug Smythies).
- Migrate cpufreq drivers for various platforms to use void remove
callback (Yangtao Li).
- Add online/offline/exit hooks for Tegra driver (Sumit Gupta).
- Explicitly include correct DT includes in cpufreq (Rob Herring).
- Frequency domain updates for qcom-hw driver (Neil Armstrong).
- Modify AMD pstate driver return the highest_perf value (Meng Li).
- Generic cleanups for cppc, mediatek and powernow driver (Liao Chang,
Konrad Dybcio).
- Add more platforms to cpufreq-arm driver's blocklist (AngeloGioacchino
Del Regno and Konrad Dybcio).
- brcmstb-avs-cpufreq: Fix -Warray-bounds bug (Gustavo A. R. Silva).
- Add device PM helpers to allow a device to remain powered-on during
system-wide transitions (Ulf Hansson).
- Rework hibernation memory snapshotting to avoid storing pages filled
with zeros in hibernation image files (Brian Geffon).
- Add check to make sure that CPU latency QoS constraints do not use
negative values (Clive Lin).
- Optimize rp->domains memory allocation in the Intel RAPL power
capping driver (xiongxin).
- Remove recursion while parsing zones in the arm_scmi power capping
driver (Cristian Marussi).
- Fix memory leak in devfreq_dev_release() (Boris Brezillon).
- Rewrite devfreq_monitor_start() kerneldoc comment (Manivannan
Sadhasivam).
- Explicitly include correct DT includes in devfreq (Rob Herring).
- Remove unsued pm_runtime_update_max_time_suspended() extern
declaration (YueHaibing).
- Add turbo-boost support to cpupower (Wyes Karny).
- Add support for amd_pstate mode change to cpupower (Wyes Karny).
- Fix 'cpupower idle_set' command to accept only numeric values of
arguments (Likhitha Korrapati).
- Clean up OPP code and add new frequency related APIs to it (Viresh
Kumar, Manivannan Sadhasivam).
- Convert ti cpufreq/opp bindings to json schema (Nishanth Menon).
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Merge tag 'pm-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These rework cpuidle governors to call tick_nohz_get_sleep_length()
less often and fix one of them, rework hibernation to avoid storing
pages filled with zeros in hibernation images, switch over some
cpufreq drivers to use void remove callbacks, fix and clean up
multiple cpufreq drivers, fix the devfreq core, update the cpupower
utility and make other assorted improvements.
Specifics:
- Rework the menu and teo cpuidle governors to avoid calling
tick_nohz_get_sleep_length(), which is likely to become quite
expensive going forward, too often and improve making decisions
regarding whether or not to stop the scheduler tick in the teo
governor (Rafael Wysocki)
- Improve the performance of cpufreq_stats_create_table() in some
cases (Liao Chang)
- Fix two issues in the amd-pstate-ut cpufreq driver (Swapnil Sapkal)
- Use clamp() helper macro to improve the code readability in
cpufreq_verify_within_limits() (Liao Chang)
- Set stale CPU frequency to minimum in intel_pstate (Doug Smythies)
- Migrate cpufreq drivers for various platforms to use void remove
callback (Yangtao Li)
- Add online/offline/exit hooks for Tegra driver (Sumit Gupta)
- Explicitly include correct DT includes in cpufreq (Rob Herring)
- Frequency domain updates for qcom-hw driver (Neil Armstrong)
- Modify AMD pstate driver return the highest_perf value (Meng Li)
- Generic cleanups for cppc, mediatek and powernow driver (Liao
Chang, Konrad Dybcio)
- Add more platforms to cpufreq-arm driver's blocklist
(AngeloGioacchino Del Regno and Konrad Dybcio)
- brcmstb-avs-cpufreq: Fix -Warray-bounds bug (Gustavo A. R. Silva)
- Add device PM helpers to allow a device to remain powered-on during
system-wide transitions (Ulf Hansson)
- Rework hibernation memory snapshotting to avoid storing pages
filled with zeros in hibernation image files (Brian Geffon)
- Add check to make sure that CPU latency QoS constraints do not use
negative values (Clive Lin)
- Optimize rp->domains memory allocation in the Intel RAPL power
capping driver (xiongxin)
- Remove recursion while parsing zones in the arm_scmi power capping
driver (Cristian Marussi)
- Fix memory leak in devfreq_dev_release() (Boris Brezillon)
- Rewrite devfreq_monitor_start() kerneldoc comment (Manivannan
Sadhasivam)
- Explicitly include correct DT includes in devfreq (Rob Herring)
- Remove unsued pm_runtime_update_max_time_suspended() extern
declaration (YueHaibing)
- Add turbo-boost support to cpupower (Wyes Karny)
- Add support for amd_pstate mode change to cpupower (Wyes Karny)
- Fix 'cpupower idle_set' command to accept only numeric values of
arguments (Likhitha Korrapati)
- Clean up OPP code and add new frequency related APIs to it (Viresh
Kumar, Manivannan Sadhasivam)
- Convert ti cpufreq/opp bindings to json schema (Nishanth Menon)"
* tag 'pm-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (74 commits)
cpufreq: tegra194: remove opp table in exit hook
cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit()
cpufreq: tegra194: add online/offline hooks
cpuidle: teo: Avoid unnecessary variable assignments
cpufreq: qcom-cpufreq-hw: add support for 4 freq domains
dt-bindings: cpufreq: qcom-hw: add a 4th frequency domain
cpufreq: amd-pstate-ut: Fix kernel panic when loading the driver
cpufreq: amd-pstate-ut: Remove module parameter access
cpufreq: Use clamp() helper macro to improve the code readability
PM: sleep: Add helpers to allow a device to remain powered-on
PM: QoS: Add check to make sure CPU latency is non-negative
PM: runtime: Remove unsued extern declaration of pm_runtime_update_max_time_suspended()
cpufreq: intel_pstate: set stale CPU frequency to minimum
cpufreq: stats: Improve the performance of cpufreq_stats_create_table()
dt-bindings: cpufreq: Convert ti-cpufreq to json schema
dt-bindings: opp: Convert ti-omap5-opp-supply to json schema
OPP: Fix argument name in doc comment
cpuidle: menu: Skip tick_nohz_get_sleep_length() call in some cases
cpufreq: cppc: Set fie_disabled to FIE_DISABLED if fails to create kworker_fie
cpufreq: cppc: cppc_cpufreq_get_rate() returns zero in all error cases.
...
|
||
|
Linus Torvalds
|
97efd28334 |
Misc x86 cleanups.
The following commit deserves special mention:
|
||
|
Linus Torvalds
|
3ca9a836ff |
Scheduler changes for v6.6:
- The biggest change is introduction of a new iteration of the
SCHED_FAIR interactivity code: the EEVDF ("Earliest Eligible Virtual
Deadline First") scheduler.
EEVDF too is a virtual-time scheduler, with two parameters (weight
and relative deadline), compared to CFS that had weight only.
It completely reworks the base scheduler: placement, preemption,
picking -- everything.
LWN.net, as usual, has a terrific writeup about EEVDF:
https://lwn.net/Articles/925371/
Preemption (both tick and wakeup) is driven by testing against
a fresh pick. Because the tree is now effectively an interval
tree, and the selection is no longer the 'leftmost' task,
over-scheduling is less of a problem. A lot of the CFS
heuristics are removed or replaced by more natural latency-space
parameters & constructs.
In terms of expected performance regressions: we'll and can fix
everything where a 'good' workload misbehaves with the new scheduler,
but EEVDF inevitably changes workload scheduling in a binary fashion,
hopefully for the better in the overwhelming majority of cases,
but in some cases it won't, especially in adversarial loads that
got lucky with the previous code, such as some variants of hackbench.
We are trying hard to err on the side of fixing all performance
regressions, but we expect some inevitable post-release iterations
of that process.
- Improve load-balancing on hybrid x86 systems: enable cluster
scheduling (again).
- Improve & fix bandwidth-scheduling on nohz systems.
- Improve bandwidth-throttling.
- Use lock guards to simplify and de-goto-ify control flow.
- Misc improvements, cleanups and fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- The biggest change is introduction of a new iteration of the
SCHED_FAIR interactivity code: the EEVDF ("Earliest Eligible Virtual
Deadline First") scheduler
EEVDF too is a virtual-time scheduler, with two parameters (weight
and relative deadline), compared to CFS that had weight only. It
completely reworks the base scheduler: placement, preemption, picking
-- everything
LWN.net, as usual, has a terrific writeup about EEVDF:
https://lwn.net/Articles/925371/
Preemption (both tick and wakeup) is driven by testing against a
fresh pick. Because the tree is now effectively an interval tree, and
the selection is no longer the 'leftmost' task, over-scheduling is
less of a problem. A lot of the CFS heuristics are removed or
replaced by more natural latency-space parameters & constructs
In terms of expected performance regressions: we will and can fix
everything where a 'good' workload misbehaves with the new scheduler,
but EEVDF inevitably changes workload scheduling in a binary fashion,
hopefully for the better in the overwhelming majority of cases, but
in some cases it won't, especially in adversarial loads that got
lucky with the previous code, such as some variants of hackbench. We
are trying hard to err on the side of fixing all performance
regressions, but we expect some inevitable post-release iterations of
that process
- Improve load-balancing on hybrid x86 systems: enable cluster
scheduling (again)
- Improve & fix bandwidth-scheduling on nohz systems
- Improve bandwidth-throttling
- Use lock guards to simplify and de-goto-ify control flow
- Misc improvements, cleanups and fixes
* tag 'sched-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
sched/eevdf/doc: Modify the documented knob to base_slice_ns as well
sched/eevdf: Curb wakeup-preemption
sched: Simplify sched_core_cpu_{starting,deactivate}()
sched: Simplify try_steal_cookie()
sched: Simplify sched_tick_remote()
sched: Simplify sched_exec()
sched: Simplify ttwu()
sched: Simplify wake_up_if_idle()
sched: Simplify: migrate_swap_stop()
sched: Simplify sysctl_sched_uclamp_handler()
sched: Simplify get_nohz_timer_target()
sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset
sched/rt: Fix sysctl_sched_rr_timeslice intial value
sched/fair: Block nohz tick_stop when cfs bandwidth in use
sched, cgroup: Restore meaning to hierarchical_quota
MAINTAINERS: Add Peter explicitly to the psi section
sched/psi: Select KERNFS as needed
sched/topology: Align group flags when removing degenerate domain
sched/fair: remove util_est boosting
sched/fair: Propagate enqueue flags into place_entity()
...
|
||
|
Linus Torvalds
|
1a7c611546 |
Perf events changes for v6.6:
- AMD IBS improvements - Intel PMU driver updates - Extend core perf facilities & the ARM PMU driver to better handle ARM big.LITTLE events - Micro-optimize software events and the ring-buffer code - Misc cleanups & fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmTtBscRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hHoQ/+IBQ8Xi/rcdd40n8OqEB/VBWVuSjNT3uN 3pHHcTl2Pio9CxBeat42NekNijlRILCKJrZ3Lt3JWBmWyWv5l3KFabelj+lDF2xa TVCjTnQNe1+HvrODYnF4ECIs5vaoMVjcJ9jg8+VDgAcOQr1nZs4m5TVAd6TLqPpV urBEQVULkkzk7ZRhfrugKhw+wrpWFefgGCx0RV8ijZB7TLMHc2wE+Q/sTxKdKceL wNaJaDgV33pZh0aImwR9pKUE532hF1FiBdLuehkh61PZa1L82jzAX1xjw2s1hSa4 eIWemPHJIYfivRlENbJsDWc4N8gk6ijVHwrxGcr4Axu+NN+zPtQ3ddhaGMAyKdTo qUKXH3MZSMIl++jI5Fkc6xM+XLvY1rML62epSzMwu/cc7Z5MeyWdQcri0N9YFuO7 wUUNnFpU00lwQBLbyyUQ3Zi8E0QV7NuPW4axTkmntiIjMpLagaEvVSf6nf8qLpbE WTT16s707t19hUZNazNZ7ONmhly4ALbHFQEH65J2KoYn99fYqy9z68Hwk+xnmykw bc3qvfhpw0MImQQ+DqHiBwb4n4UuvY2WlkkZI3FfNeSG63DaM2mZikfpElpXYjn6 9iOIXvx21Wiq/n0cbLhidI2q/ZzFCzYLCk6ikZ320wb+rhvd7EoSlZil6QSzn3pH Qdk+NEZgWQY= =ZT6+ -----END PGP SIGNATURE----- Merge tag 'perf-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf event updates from Ingo Molnar: - AMD IBS improvements - Intel PMU driver updates - Extend core perf facilities & the ARM PMU driver to better handle ARM big.LITTLE events - Micro-optimize software events and the ring-buffer code - Misc cleanups & fixes * tag 'perf-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/uncore: Remove unnecessary ?: operator around pcibios_err_to_errno() call perf/x86/intel: Add Crestmont PMU x86/cpu: Update Hybrids x86/cpu: Fix Crestmont uarch x86/cpu: Fix Gracemont uarch perf: Remove unused extern declaration arch_perf_get_page_size() perf: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability arm_pmu: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability perf/x86: Remove unused PERF_PMU_CAP_HETEROGENEOUS_CPUS capability arm_pmu: Add PERF_PMU_CAP_EXTENDED_HW_TYPE capability perf/x86/ibs: Set mem_lvl_num, mem_remote and mem_hops for data_src perf/mem: Add PERF_MEM_LVLNUM_NA to PERF_MEM_NA perf/mem: Introduce PERF_MEM_LVLNUM_UNC perf/ring_buffer: Use local_try_cmpxchg in __perf_output_begin locking/arch: Avoid variable shadowing in local_try_cmpxchg() perf/core: Use local64_try_cmpxchg in perf_swevent_set_period perf/x86: Use local64_try_cmpxchg perf/amd: Prevent grouping of IBS events |
||
|
Linus Torvalds
|
6f49693a6c |
Updates for the CPU hotplug core:
- Support partial SMT enablement.
So far the sysfs SMT control only allows to toggle between SMT on and
off. That's sufficient for x86 which usually has at max two threads
except for the Xeon PHI platform which has four threads per core.
Though PowerPC has up to 16 threads per core and so far it's only
possible to control the number of enabled threads per core via a
command line option. There is some way to control this at runtime, but
that lacks enforcement and the usability is awkward.
This update expands the sysfs interface and the core infrastructure to
accept numerical values so PowerPC can build SMT runtime control for
partial SMT enablement on top.
The core support has also been provided to the PowerPC maintainers who
added the PowerPC related changes on top.
- Minor cleanups and documentation updates.
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Merge tag 'smp-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug updates from Thomas Gleixner:
"Updates for the CPU hotplug core:
- Support partial SMT enablement.
So far the sysfs SMT control only allows to toggle between SMT on
and off. That's sufficient for x86 which usually has at max two
threads except for the Xeon PHI platform which has four threads per
core
Though PowerPC has up to 16 threads per core and so far it's only
possible to control the number of enabled threads per core via a
command line option. There is some way to control this at runtime,
but that lacks enforcement and the usability is awkward
This update expands the sysfs interface and the core infrastructure
to accept numerical values so PowerPC can build SMT runtime control
for partial SMT enablement on top
The core support has also been provided to the PowerPC maintainers
who added the PowerPC related changes on top
- Minor cleanups and documentation updates"
* tag 'smp-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation: core-api/cpuhotplug: Fix state names
cpu/hotplug: Remove unused function declaration cpu_set_state_online()
cpu/SMT: Fix cpu_smt_possible() comment
cpu/SMT: Allow enabling partial SMT states via sysfs
cpu/SMT: Create topology_smt_thread_allowed()
cpu/SMT: Remove topology_smt_supported()
cpu/SMT: Store the current/max number of threads
cpu/SMT: Move smt/control simple exit cases earlier
cpu/SMT: Move SMT prototypes into cpu_smt.h
cpu/hotplug: Remove dependancy against cpu_primary_thread_mask
|
||
|
Linus Torvalds
|
dd3f0fe501 |
Boring updates for the interrupt subsystem:
Core:
- Prevent a deadlock of nested interrupt threads vs.
synchronize_hard()
- Removal of a stale extern declaration
Drivers:
- The first new driver since v6.2 for Amlogic-C3 SoCs
- The usual small fixes, cleanups and improvements all over
the place
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Merge tag 'irq-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Boring updates for the interrupt subsystem:
Core:
- Prevent a deadlock of nested interrupt threads vs.
synchronize_hard()
- Removal of a stale extern declaration
Drivers:
- The first new driver since v6.2 for Amlogic-C3 SoCs
- The usual small fixes, cleanups and improvements all over the
place"
* tag 'irq-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: Add support for Amlogic-C3 SoCs
dt-bindings: interrupt-controller: Add support for Amlogic-C3 SoCs
irqchip/irq-mvebu-sei: Use devm_platform_get_and_ioremap_resource()
irqchip/ls-scfg-msi: Use devm_platform_get_and_ioremap_resource()
irqchip: Explicitly include correct DT includes
irqchip/orion: Use of_address_count() helper
irqchip/irq-pruss-intc: Do not check for 0 return after calling platform_get_irq()
irqchip/imx-mu-msi: Do not check for 0 return after calling platform_get_irq()
irqchipr/i8259: Mark i8259_of_init() static
irqchip/mips-gic: Mark gic_irq_domain_free() static
irqchip/xtensa-pic: Include header for xtensa_pic_init_legacy()
irqchip/loongson-eiointc: Fix return value checking of eiointc_index
genirq: Remove unused extern declaration
genirq: Prevent nested thread vs synchronize_hardirq() deadlock
|
||
|
Linus Torvalds
|
6bfce7759c |
A single update to the core entry code, which removes the empty user
address limit check which is a leftover of the removed TIF_FSCHECK. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmTsi5ETHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoZRGEACDGWXaadhCYNpHftScC6X3z2d3DXZX E5PAiVtq/sQX8FV2KJgMxywxQ4QEJjtX9lgoxGMKc7zai2FgKbWzPnlz6qz3przh P5Ji+sBl0DbpVnLMaAAVzikvWpjFfSbf/b8lHA3EVs/9HkPfZY7rwByONsVkxX2e 6AS8tOv0CJP3lMaZ02tDs48PWOeF1CEpub9Eg5JfYG+CTU0gy+wFMnIUCkN/eP2E CYNo6wTFjBQ43S7GWrqA6eYgbHLBBvOuHLHM3RlLOm2Rexct/umf84At9K9wUJvJ mGSrZKsgD3UZJi7HpF5RXsY88+4uV38vhkN6LGRdHrarLz3WMvnc191WP7iwCBmo HGIgWWxm9+bGAxiw9wTNgmERvwKBeMNNQEDu/58An637VDucrYOlRi2Mh0CE5QiG i1R+KiKBUZw3Blogx+O65m0PyXpJQqHfr2WkfT+uKJCs7wRBdupmWv+ZAcSj6tys ILqCHRmI4n46T2qp67/M6FbYTrk0DNWsjgjtUgLBquEsj6z00favxAug5NrJV6+c 5/kf7C97h1TmtqqNjtL4uwfWGm2bqc6AZyMpsk0KqnirywmnkgIKOWHu//TwQVJs jpwRvsAv3UNnUrO6qtqNzbNDQQ0MOLAAuDgardGWW7gEEhvaa+HdbwyjZSwDZvZy b8PLikU7gRB9rQ== =W9kd -----END PGP SIGNATURE----- Merge tag 'core-entry-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core entry code update from Thomas Gleixner: "A single update to the core entry code, which removes the empty user address limit check which is a leftover of the removed TIF_FSCHECK" * tag 'core-entry-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: entry: Remove empty addr_limit_user_check() |
||
|
Linus Torvalds
|
b98af53cb0 |
Clocksource watchdog commits for v6.6
This pull reqeust contains the following: o Handle negative skews in "skew is too large" messages. o Extend watchdog check exemption to 4-Socket platforms -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmTcF94THHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jPeHEACXvYFMwno+1DPlt2PtFJglnkuYyOUQ SwRRiOLWXdzsikzjWIvdrSOqslbdIjhZmSSyPDjyo4GPYFSSOyKNsqczwsX8R49u O/2Yzkrx2OmIWcKiAkII8Iw4fFedoITtzC59wbZHoo/+upEpbZYP3u7AjJTird7y du3WcWcGc1eEt5+7MNwbZfwpzo2t5Rb3Wqfgs6vnKTG7Abc/23uChsCBzPavX7X/ djNd1bA5YmEldKKxSoF5XSW/F1TWIA4fXMDkBwgRKHBx1Y7xU+nJMtam4ogAzN6a 4zgthgy5wQ7/VnTBv2rmQQb6ae3Blm09Yg1ac8zt95RLgmGkyX73lZGnRBTdYqyh kb47Tfw3a+e+VPTD+W3rY1NOSOwbstdDHVckK+0bFvqNyXOoaEJL+EEOhm9rPXxv le+T6Ct1VPAF9lHPUz7lVCVXN91vP4Gqrxjmeq5rqWNOvRW3jBcCLnEpFzWJtu50 JjQBi3HA0HW+Bxqov22W0llFAa0gVm8xyxXfNSSL7VoCinnS6/qyQvD1GoG0brk3 l5orOk38m2/acvTyvw2tnvAAuqmOr+oGlcQhJOOVl7jDz+sae6RMTwWCMaVxKUDo YW7v5YFQePmzC9J4M5XFMdCCTb3cUCjVLMdsPgONM3kn9ALEDhhTBSw76N//bGLg 4/OEsT7Aq6LHkA== =6/HI -----END PGP SIGNATURE----- Merge tag 'clocksource.2023.08.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull clocksource watchdog updates from Paul McKenney: - Handle negative skews in "skew is too large" messages - Extend watchdog check exemption to 4-Socket platforms * tag 'clocksource.2023.08.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: x86/tsc: Extend watchdog check exemption to 4-Sockets platform clocksource: Handle negative skews in "skew is too large" messages |
||
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Linus Torvalds
|
b324696dce |
CSD lock commits for v6.5
This series reduces the number of stack traces dumped during CSD-lock debugging. This helps to avoid console overrun on systems with large numbers of CPUs. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmSxzCITHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jK3wD/9bNte4pbnG5CmJvu+bh1idbD+ZIyaU 13mTg1J35XurW/QlmbOKoNcdylvmE4QdzUxURXgv4FHO7wdiARBGgrz9ArKjgq+e NfklTr4EY9UbRb27tO1iJDUiP6ZZB3fw+gYs2zmJMkn5CqK+rkUrTdcMa8EFHvlT vf6OL8xeFjsrTCWfYTAYJU1Yp+0UOiO+BRwzq4u76Wzpex79EiMEE2lLeRZfXhz9 mF704EXn7VEkfRo50GlGOjVkezghlItXlaUCV2eQ4T6/LwXgreStCTKfhrDA5Qs2 mAQ5OMZJztlbUWcVrEPZMpQ6pXWaJx5qoMZ1uP8Obec89ocr+/DuL1Myyaau9g+H rCYA9Om4XfAd2JURrxOIlKQ7SmvRJNZWpv0DHizTfWpSTOumtON2RyVlC2EYwx9Q 2ZL4Eo99VzYcAXWx8KiGpF6CtW67VXKZsHwTtJegu4Vkjk9wOt5Sa9svhiHv0Kz4 veYE9XuOH5+tIfN6tP4eikI+4VJOVhudsOKiXCjhoscy+1/gtXRH5WgYwvSiopWo nEsj05V7U0hWdsPpu7niZ982vAU1eHC7EeQt+pc5f17NeNr51xG3Oj3xyy14yzFC TbEyOft0MEsJ8NkC93FCbNqere7dk6k+bxVqvoWQ5tDfsEhIaVn+HzVhPdsluvfP 1JixcSuqZ42RqA== =t4s8 -----END PGP SIGNATURE----- Merge tag 'csd-lock.2023.07.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull CSD lock updates from Paul McKenney: "This series reduces the number of stack traces dumped during CSD-lock debugging. This helps to avoid console overrun on systems with large numbers of CPUs" * tag 'csd-lock.2023.07.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: smp: Reduce NMI traffic from CSD waiters to CSD destination smp: Reduce logging due to dump_stack of CSD waiters |
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Linus Torvalds
|
6ae0c15765 |
smp_call_function torture-test updates for v6.6
This pull request prevents some memory-exhaustion false-postitive failures in scftorture testing. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmTcFWYTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jBPhD/9jqgTgPuF3bmRVpkggIXHN0wCTihS9 BNQPaUdLRmTymtZAecaPOdRvPPMUvqjOK5dS8sx7rnoyU+qr33mUkRzSFCIrsGHM 62FowQ4grokOkQnJYUpVuLhitYwwmWi7aKi5T2Xolc4ooSIpWZe/NPoiteGkm4lc nuA84DcV51rRykjBjW3LIrffoi9fu3lU65FsAjQttG7OZwWmAjhhHl29loCPlG3F +Ui+0p+cp8WAB/2J0B/6aHTqK6JJoV0t/gzKpzYvI/Gydz/7PaYjdBhPCSxHcsXd LMf+OO5/LtGfw4kcYF/8O4Ir0t4F681iOXlz06op2P2OT90S0O31SGUWznKMVq3E V307I9LnfT5Jo2aK9xD4ad8GM9rMKb9btc284QvaYAjCUD5RBoyA/S1d6e0u9rt3 oK7rJWIG9bzCbZ7R7xXCzpkCYw98npVeDxS9gdwWSCA0vBwmhF8BbVQODZ/u+YQ0 TQyTSankebeaoINeieto0ZAbK9iDSbsnTmKZ146hoLGFshDFN7qPOL4PggXPqw5B CXILQH+SOjMO+JaIrd4iOr172REzp1/64K4szaheV4LxyEwC/QJBdxhajdpJOTOS LowIG+LIIElr8dPIiiEIBVAaTehadgqA1+5zIcevt8OSMb7KOoB6FkXKj/9kWOfD PwFfqskEYoY8xQ== =8rLK -----END PGP SIGNATURE----- Merge tag 'scftorture.2023.08.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull smp_call_function torture-test updates from Paul McKenney: "This prevents some memory-exhaustion false-postitive failures in scftorture testing" * tag 'scftorture.2023.08.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: scftorture: Add CONFIG_PREEMPT_DYNAMIC=n to NOPREEMPT scenario scftorture: Pause testing after memory-allocation failure scftorture: Forgive memory-allocation failure if KASAN torture: Scale scftorture memory based on number of CPUs |
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Linus Torvalds
|
68cadad11f |
RCU pull request for v6.6
doc.2023.07.14b: Documentation updates. fixes.2023.08.16a: Miscellaneous fixes, perhaps most notably simplifying SRCU_NOTIFIER_INIT() as suggested. rcu-tasks.2023.07.24a: RCU Tasks updates, most notably treating Tasks RCU callbacks as lazy while still treating synchronous grace periods as urgent. Also fixes one bug that restores the ability to apply debug-objects to RCU Tasks and another that fixes a race condition that could result in false-positive failures of the boot-time self-test code. rcuscale.2023.07.14b: RCU-scalability performance-test updates, most notably adding the ability to measure the RCU-Tasks's grace-period kthread's CPU consumption. This proved quite useful for the rcu-tasks.2023.07.24a work. refscale.2023.07.14b: Reference-acquisition/release performance-test updates, including a fix for an uninitialized wait_queue_head_t. torture.2023.08.14a: Miscellaneous torture-test updates. torturescripts.2023.07.20a: Torture-test scripting updates, including removal of the non-longer-functional formal-verification scripts, test builds of individual RCU Tasks flavors, better diagnostics for loss of connectivity for distributed rcutorture tests, disabling of reboot loops in qemu/KVM-based rcutorture testing, and passing of init parameters to rcutorture's init program. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmTjkssTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jITND/9zEqYNbeFrcBs/YaHdoAjsNgOt1IYN csfF/KArVgdvmrwlV/nEaQMLaJcw9X7DVU5+7E2JbbDaB/2FSacseNyKk6mfgSVK /0rnTOXpqI9/T1HiJObWZvDQFuKL12bfteXWGJg1sMt2JUGZ4nAWhdZ3xRjp2XkO 89qB5r0fF8gyGwvQ3M29ss8T9Oy0uUNJmDY/QyVxHM6dhkpSAezFffKzD7C4zkSV WucRTpYJ7bs6otBGtVmwz3x60UAuLwcVfQyB+CTbnGLsps9yAYU+1DDVdm7olcr3 ARXMeboeodMvy9jWXhtbWRVAAob4lVUDXQN27kb4sBgroRQBfQXMuByRAU6s0VtX frOl6rlbORuAetsC8wFL0IFVn4yTpvXKbYw7h1MXTs7gVVbl33O9FieGvWu0r79/ VR4Xw+JbmYWtyvFV8Zaq4iIEcOe+PeNH6u0bPx+htsHYd1+DUG2UY0MVmJQ3a4sb ygejA6mguCk7KBzWab8wdDpgAfhNwg0T9a+LQYcaskuD5SSWjYqqg6i1ulqqqyiE bOfRKDX4mWmAobWKHLssqUrjiLbxfygIaHjCrt7rWJKPIs1bK/WfWa4JbrE0NRwK 9IDd1lWc9C+zoUpjyZWSG3ahK5lWo2u4sPNoRtMQjowjobIz1cBhaEwmFe72bG7C FCKb7Da2oUaLOw== =EujZ -----END PGP SIGNATURE----- Merge tag 'rcu.2023.08.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull RCU updates from Paul McKenney: - Documentation updates - Miscellaneous fixes, perhaps most notably simplifying SRCU_NOTIFIER_INIT() as suggested - RCU Tasks updates, most notably treating Tasks RCU callbacks as lazy while still treating synchronous grace periods as urgent. Also fixes one bug that restores the ability to apply debug-objects to RCU Tasks and another that fixes a race condition that could result in false-positive failures of the boot-time self-test code - RCU-scalability performance-test updates, most notably adding the ability to measure the RCU-Tasks's grace-period kthread's CPU consumption. This proved quite useful for the RCU Tasks work - Reference-acquisition/release performance-test updates, including a fix for an uninitialized wait_queue_head_t - Miscellaneous torture-test updates - Torture-test scripting updates, including removal of the non-longer-functional formal-verification scripts, test builds of individual RCU Tasks flavors, better diagnostics for loss of connectivity for distributed rcutorture tests, disabling of reboot loops in qemu/KVM-based rcutorture testing, and passing of init parameters to rcutorture's init program * tag 'rcu.2023.08.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (64 commits) rcu: Use WRITE_ONCE() for assignments to ->next for rculist_nulls rcu: Make the rcu_nocb_poll boot parameter usable via boot config rcu: Mark __rcu_irq_enter_check_tick() ->rcu_urgent_qs load srcu,notifier: Remove #ifdefs in favor of SRCU Tiny srcu_usage rcutorture: Stop right-shifting torture_random() return values torture: Stop right-shifting torture_random() return values torture: Move stutter_wait() timeouts to hrtimers torture: Move torture_shuffle() timeouts to hrtimers torture: Move torture_onoff() timeouts to hrtimers torture: Make torture_hrtimeout_*() use TASK_IDLE torture: Add lock_torture writer_fifo module parameter torture: Add a kthread-creation callback to _torture_create_kthread() rcu-tasks: Fix boot-time RCU tasks debug-only deadlock rcu-tasks: Permit use of debug-objects with RCU Tasks flavors checkpatch: Complain about unexpected uses of RCU Tasks Trace torture: Cause mkinitrd.sh to indicate failure on compile errors torture: Make init program dump command-line arguments torture: Switch qemu from -nographic to -display none torture: Add init-program support for loongarch torture: Avoid torture-test reboot loops ... |
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Linus Torvalds
|
727dbda16b |
hardening updates for v6.6-rc1
- Carve out the new CONFIG_LIST_HARDENED as a more focused subset of
CONFIG_DEBUG_LIST (Marco Elver).
- Fix kallsyms lookup failure under Clang LTO (Yonghong Song).
- Clarify documentation for CONFIG_UBSAN_TRAP (Jann Horn).
- Flexible array member conversion not carried in other tree (Gustavo
A. R. Silva).
- Various strlcpy() and strncpy() removals not carried in other trees
(Azeem Shaikh, Justin Stitt).
- Convert nsproxy.count to refcount_t (Elena Reshetova).
- Add handful of __counted_by annotations not carried in other trees,
as well as an LKDTM test.
- Fix build failure with gcc-plugins on GCC 14+.
- Fix selftests to respect SKIP for signal-delivery tests.
- Fix CFI warning for paravirt callback prototype.
- Clarify documentation for seq_show_option_n() usage.
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Merge tag 'hardening-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As has become normal, changes are scattered around the tree (either
explicitly maintainer Acked or for trivial stuff that went ignored):
- Carve out the new CONFIG_LIST_HARDENED as a more focused subset of
CONFIG_DEBUG_LIST (Marco Elver)
- Fix kallsyms lookup failure under Clang LTO (Yonghong Song)
- Clarify documentation for CONFIG_UBSAN_TRAP (Jann Horn)
- Flexible array member conversion not carried in other tree (Gustavo
A. R. Silva)
- Various strlcpy() and strncpy() removals not carried in other trees
(Azeem Shaikh, Justin Stitt)
- Convert nsproxy.count to refcount_t (Elena Reshetova)
- Add handful of __counted_by annotations not carried in other trees,
as well as an LKDTM test
- Fix build failure with gcc-plugins on GCC 14+
- Fix selftests to respect SKIP for signal-delivery tests
- Fix CFI warning for paravirt callback prototype
- Clarify documentation for seq_show_option_n() usage"
* tag 'hardening-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (23 commits)
LoadPin: Annotate struct dm_verity_loadpin_trusted_root_digest with __counted_by
kallsyms: Change func signature for cleanup_symbol_name()
kallsyms: Fix kallsyms_selftest failure
nsproxy: Convert nsproxy.count to refcount_t
integrity: Annotate struct ima_rule_opt_list with __counted_by
lkdtm: Add FAM_BOUNDS test for __counted_by
Compiler Attributes: counted_by: Adjust name and identifier expansion
um: refactor deprecated strncpy to memcpy
um: vector: refactor deprecated strncpy
alpha: Replace one-element array with flexible-array member
hardening: Move BUG_ON_DATA_CORRUPTION to hardening options
list: Introduce CONFIG_LIST_HARDENED
list_debug: Introduce inline wrappers for debug checks
compiler_types: Introduce the Clang __preserve_most function attribute
gcc-plugins: Rename last_stmt() for GCC 14+
selftests/harness: Actually report SKIP for signal tests
x86/paravirt: Fix tlb_remove_table function callback prototype warning
EISA: Replace all non-returning strlcpy with strscpy
perf: Replace strlcpy with strscpy
um: Remove strlcpy declaration
...
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Linus Torvalds
|
b03a434214 |
seccomp updates for v6.6-rc1
- Provide USER_NOTIFY flag for synchronous mode (Andrei Vagin, Peter Oskolkov). This touches the scheduler and perf but has been Acked by Peter Zijlstra. - Fix regression in syscall skipping and restart tracing on arm32. This touches arch/arm/ but has been Acked by Arnd Bergmann. -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmTs418WHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJohpD/4tEfRdnb/KDgwQ7uvqBonUJXcx wqw17LZCGTpBV3/Tp3+aEseD1NezOxiMJL88VyUHSy7nfDJShbL6QtyoenwEOeXJ HmBUfcIH3cqRutHEJ3drYBzBetpeeK2G+gTYVj+JoEfPWyPf+Egj+1JE2n1xLi92 WC1miBAyBZ59kN+D1hcDzJu24CkAwbcUYlEzGejN5lBOwxYV3/fjARBVRvefOO5m jljSCIVJOFgCiybKhJ7Zw1+lkFc3cIlcOgr4/ZegSc8PxFVebnuImTHHp/gvoo6F 7d1xe5Hk+PSfNvVq41MAeRB2vK2tY5efwjXRarThUaydPTO43KiQm0dzP0EYWK9a LcOg8zAXZnpvuWU5O2SqUKADcxe2TjS1WuQ/Q4ixxgKz2kJKDwrNU8Frf327eLSR acfZgMMiUfEXyXDV9B3LzNAtwdvwyxYrzEzxgKywhThIhZmQDat0rI2IaTV5QIc5 pkxiFEe0TPwpzyUVO9dSzE+ughTmNQOKk5uAM9e2NwRwVdhEmlZAxo0kStJ1NoaA yDjYIKfaNBElchL4v2931KJFJseI+uRaWdW10JEV+1M69+gEAEs6wbmAxtcYS776 xWsYp3slXzlmeVyvQp/ah8p0y55r+qTbcnhkvIdiwLYei4Bh3KOoJUlVmW0V5dKq b+7qspIvBA0kKRAqPw== =DI8R -----END PGP SIGNATURE----- Merge tag 'seccomp-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull seccomp updates from Kees Cook: - Provide USER_NOTIFY flag for synchronous mode (Andrei Vagin, Peter Oskolkov). This touches the scheduler and perf but has been Acked by Peter Zijlstra. - Fix regression in syscall skipping and restart tracing on arm32. This touches arch/arm/ but has been Acked by Arnd Bergmann. * tag 'seccomp-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: seccomp: Add missing kerndoc notations ARM: ptrace: Restore syscall skipping for tracers ARM: ptrace: Restore syscall restart tracing selftests/seccomp: Handle arm32 corner cases better perf/benchmark: add a new benchmark for seccom_unotify selftest/seccomp: add a new test for the sync mode of seccomp_user_notify seccomp: add the synchronous mode for seccomp_unotify sched: add a few helpers to wake up tasks on the current cpu sched: add WF_CURRENT_CPU and externise ttwu seccomp: don't use semaphore and wait_queue together |
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Linus Torvalds
|
615e95831e |
v6.6-vfs.ctime
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Merge tag 'v6.6-vfs.ctime' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs timestamp updates from Christian Brauner:
"This adds VFS support for multi-grain timestamps and converts tmpfs,
xfs, ext4, and btrfs to use them. This carries acks from all relevant
filesystems.
The VFS always uses coarse-grained timestamps when updating the ctime
and mtime after a change. This has the benefit of allowing filesystems
to optimize away a lot of metadata updates, down to around 1 per
jiffy, even when a file is under heavy writes.
Unfortunately, this has always been an issue when we're exporting via
NFSv3, which relies on timestamps to validate caches. A lot of changes
can happen in a jiffy, so timestamps aren't sufficient to help the
client decide to invalidate the cache.
Even with NFSv4, a lot of exported filesystems don't properly support
a change attribute and are subject to the same problems with timestamp
granularity. Other applications have similar issues with timestamps
(e.g., backup applications).
If we were to always use fine-grained timestamps, that would improve
the situation, but that becomes rather expensive, as the underlying
filesystem would have to log a lot more metadata updates.
This introduces fine-grained timestamps that are used when they are
actively queried.
This uses the 31st bit of the ctime tv_nsec field to indicate that
something has queried the inode for the mtime or ctime. When this flag
is set, on the next mtime or ctime update, the kernel will fetch a
fine-grained timestamp instead of the usual coarse-grained one.
As POSIX generally mandates that when the mtime changes, the ctime
must also change the kernel always stores normalized ctime values, so
only the first 30 bits of the tv_nsec field are ever used.
Filesytems can opt into this behavior by setting the FS_MGTIME flag in
the fstype. Filesystems that don't set this flag will continue to use
coarse-grained timestamps.
Various preparatory changes, fixes and cleanups are included:
- Fixup all relevant places where POSIX requires updating ctime
together with mtime. This is a wide-range of places and all
maintainers provided necessary Acks.
- Add new accessors for inode->i_ctime directly and change all
callers to rely on them. Plain accesses to inode->i_ctime are now
gone and it is accordingly rename to inode->__i_ctime and commented
as requiring accessors.
- Extend generic_fillattr() to pass in a request mask mirroring in a
sense the statx() uapi. This allows callers to pass in a request
mask to only get a subset of attributes filled in.
- Rework timestamp updates so it's possible to drop the @now
parameter the update_time() inode operation and associated helpers.
- Add inode_update_timestamps() and convert all filesystems to it
removing a bunch of open-coding"
* tag 'v6.6-vfs.ctime' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (107 commits)
btrfs: convert to multigrain timestamps
ext4: switch to multigrain timestamps
xfs: switch to multigrain timestamps
tmpfs: add support for multigrain timestamps
fs: add infrastructure for multigrain timestamps
fs: drop the timespec64 argument from update_time
xfs: have xfs_vn_update_time gets its own timestamp
fat: make fat_update_time get its own timestamp
fat: remove i_version handling from fat_update_time
ubifs: have ubifs_update_time use inode_update_timestamps
btrfs: have it use inode_update_timestamps
fs: drop the timespec64 arg from generic_update_time
fs: pass the request_mask to generic_fillattr
fs: remove silly warning from current_time
gfs2: fix timestamp handling on quota inodes
fs: rename i_ctime field to __i_ctime
selinux: convert to ctime accessor functions
security: convert to ctime accessor functions
apparmor: convert to ctime accessor functions
sunrpc: convert to ctime accessor functions
...
|
||
|
Linus Torvalds
|
3b35375f19 |
A last minute fix for a regression introduced in the v6.5 merge window. The
conversion of the software based interrupt resend mechanism to hlist missed to add a check whether the descriptor is already enqueued and dropped the interrupt descriptor lookup for nested interrupts. The missing check whether the descriptor is already queued causes hlist corruption and can be observed in the wild. The dropped parent descriptor lookup has not yet caused problems, but it would result in stale interrupt line in the worst case. Add the missing enqueued check and bring the descriptor lookup back to cure this. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmTqNLQTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoTeBD/0b8zbNhmO5TXhP6GrCPXahFM6aTmyK NveZMzh1c7tQZzMBNNEnRoaYvmcgPOviZ1Yi3+/Hs3oaR/b6nLt36K8+MRC7J+15 j6cIylmpTp9eH5Na3IT1wmTNfCVAdoejoZVYq4PPHAHUrzqu7ESOTLzHbPmWS97E VGdvUrKnQ7J4ajOZn7bXWaia+qCuIij87CYAKH++c9JVMIc0iTs2Zd7FG2sncgLm OJdvjmMy/qN9a1jYdM4DrGOS8HBdvuYb9EEDuZB4NEY3nBR+svQqBHsD462LgxNe +OTzLBVMoP9heKbyTU9357PUq2qz6OmpC0vE1n5XgkSEdrvm9x1UjYcPQnagRm25 JZp/pEI/ryD8oGQNWzsPe7PDyyKHV5F0Q1KPHGUvvEJxwF+USVe9Zm6damfZvGeA dp34zYg0mFCH0hmqdYs6+cc8sJcEy8aR8FFUgI1Uj5nr9zZ3vV7WTsOjJ12NDFo/ L+oDKz6/sdL2X/EKddP3ffQrImPF8DdSYfEPmoukTMhihfgXewBlgvg3b9HekVVm 9j7UhqsQw/mdPcTpkM6cd5ngxB71X64gMjAfotwsproJg/EUw978CM++9sGKmKy8 jU7hlgZQ3DniSCyCpXB/7vZxAFej8TKTWmTc4KZYKiMfej2vqI3FjA3KLGY6GzK+ ls/Rm57EOhKZlw== =Snax -----END PGP SIGNATURE----- Merge tag 'irq-urgent-2023-08-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fix from Thomas Gleixner: "A last minute fix for a regression introduced in the v6.5 merge window. The conversion of the software based interrupt resend mechanism to hlist missed to add a check whether the descriptor is already enqueued and dropped the interrupt descriptor lookup for nested interrupts. The missing check whether the descriptor is already queued causes hlist corruption and can be observed in the wild. The dropped parent descriptor lookup has not yet caused problems, but it would result in stale interrupt line in the worst case. Add the missing enqueued check and bring the descriptor lookup back to cure this" * tag 'irq-urgent-2023-08-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Fix software resend lockup and nested resend |
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|
Johan Hovold
|
9f5deb5516 |
genirq: Fix software resend lockup and nested resend
The switch to using hlist for managing software resend of interrupts
broke resend in at least two ways:
First, unconditionally adding interrupt descriptors to the resend list can
corrupt the list when the descriptor in question has already been
added. This causes the resend tasklet to loop indefinitely with interrupts
disabled as was recently reported with the Lenovo ThinkPad X13s after
threaded NAPI was disabled in the ath11k WiFi driver.
This bug is easily fixed by restoring the old semantics of irq_sw_resend()
so that it can be called also for descriptors that have already been marked
for resend.
Second, the offending commit also broke software resend of nested
interrupts by simply discarding the code that made sure that such
interrupts are retriggered using the parent interrupt.
Add back the corresponding code that adds the parent descriptor to the
resend list.
Fixes:
|
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Jakub Kicinski
|
bebfbf07c7 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZOjkTAAKCRDbK58LschI gx32AP9gaaHFBtOYBfoenKTJfMgv1WhtQHIBas+WN9ItmBx9MAEA4gm/VyQ6oD7O EBjJKJQ2CZ/QKw7cNacXw+l5jF7/+Q0= =8P7g -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-08-25 We've added 87 non-merge commits during the last 8 day(s) which contain a total of 104 files changed, 3719 insertions(+), 4212 deletions(-). The main changes are: 1) Add multi uprobe BPF links for attaching multiple uprobes and usdt probes, which is significantly faster and saves extra fds, from Jiri Olsa. 2) Add support BPF cpu v4 instructions for arm64 JIT compiler, from Xu Kuohai. 3) Add support BPF cpu v4 instructions for riscv64 JIT compiler, from Pu Lehui. 4) Fix LWT BPF xmit hooks wrt their return values where propagating the result from skb_do_redirect() would trigger a use-after-free, from Yan Zhai. 5) Fix a BPF verifier issue related to bpf_kptr_xchg() with local kptr where the map's value kptr type and locally allocated obj type mismatch, from Yonghong Song. 6) Fix BPF verifier's check_func_arg_reg_off() function wrt graph root/node which bypassed reg->off == 0 enforcement, from Kumar Kartikeya Dwivedi. 7) Lift BPF verifier restriction in networking BPF programs to treat comparison of packet pointers not as a pointer leak, from Yafang Shao. 8) Remove unmaintained XDP BPF samples as they are maintained in xdp-tools repository out of tree, from Toke Høiland-Jørgensen. 9) Batch of fixes for the tracing programs from BPF samples in order to make them more libbpf-aware, from Daniel T. Lee. 10) Fix a libbpf signedness determination bug in the CO-RE relocation handling logic, from Andrii Nakryiko. 11) Extend libbpf to support CO-RE kfunc relocations. Also follow-up fixes for bpf_refcount shared ownership implementation, both from Dave Marchevsky. 12) Add a new bpf_object__unpin() API function to libbpf, from Daniel Xu. 13) Fix a memory leak in libbpf to also free btf_vmlinux when the bpf_object gets closed, from Hao Luo. 14) Small error output improvements to test_bpf module, from Helge Deller. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (87 commits) selftests/bpf: Add tests for rbtree API interaction in sleepable progs bpf: Allow bpf_spin_{lock,unlock} in sleepable progs bpf: Consider non-owning refs to refcounted nodes RCU protected bpf: Reenable bpf_refcount_acquire bpf: Use bpf_mem_free_rcu when bpf_obj_dropping refcounted nodes bpf: Consider non-owning refs trusted bpf: Ensure kptr_struct_meta is non-NULL for collection insert and refcount_acquire selftests/bpf: Enable cpu v4 tests for RV64 riscv, bpf: Support unconditional bswap insn riscv, bpf: Support signed div/mod insns riscv, bpf: Support 32-bit offset jmp insn riscv, bpf: Support sign-extension mov insns riscv, bpf: Support sign-extension load insns riscv, bpf: Fix missing exception handling and redundant zext for LDX_B/H/W samples/bpf: Add note to README about the XDP utilities moved to xdp-tools samples/bpf: Cleanup .gitignore samples/bpf: Remove the xdp_sample_pkts utility samples/bpf: Remove the xdp1 and xdp2 utilities samples/bpf: Remove the xdp_rxq_info utility samples/bpf: Remove the xdp_redirect* utilities ... ==================== Link: https://lore.kernel.org/r/20230825194319.12727-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Yonghong Song
|
76903a9648 |
kallsyms: Change func signature for cleanup_symbol_name()
All users of cleanup_symbol_name() do not use the return value. So let us change the return value of cleanup_symbol_name() to 'void' to reflect its usage pattern. Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20230825202036.441212-1-yonghong.song@linux.dev Signed-off-by: Kees Cook <keescook@chromium.org> |
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Rafael J. Wysocki
|
6a0b211f8b |
Merge branches 'pm-sleep', 'pm-qos' and 'powercap'
Merge system-wide power management changes and power capping updates for 6.6-rc1: - Add device PM helpers to allow a device to remain powered-on during system-wide transitions (Ulf Hansson). - Rework hibernation memory snapshotting to avoid storing pages filled with zeros in hibernation image files (Brian Geffon). - Add check to make sure that CPU latency QoS constraints do not use negative values (Clive Lin). - Optimize rp->domains memory allocation in the Intel RAPL power capping driver (xiongxin). - Remove recursion while parsing zones in the arm_scmi power capping driver (Cristian Marussi). * pm-sleep: PM: sleep: Add helpers to allow a device to remain powered-on PM: hibernate: don't store zero pages in the image file * pm-qos: PM: QoS: Add check to make sure CPU latency is non-negative * powercap: powercap: intel_rapl: Optimize rp->domains memory allocation powercap: arm_scmi: Remove recursion while parsing zones |
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Yonghong Song
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33f0467fe0 |
kallsyms: Fix kallsyms_selftest failure
Kernel test robot reported a kallsyms_test failure when clang lto is enabled (thin or full) and CONFIG_KALLSYMS_SELFTEST is also enabled. I can reproduce in my local environment with the following error message with thin lto: [ 1.877897] kallsyms_selftest: Test for 1750th symbol failed: (tsc_cs_mark_unstable) addr=ffffffff81038090 [ 1.877901] kallsyms_selftest: abort It appears that commit |
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Dave Marchevsky
|
5861d1e8db |
bpf: Allow bpf_spin_{lock,unlock} in sleepable progs
Commit
|
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Dave Marchevsky
|
0816b8c6bf |
bpf: Consider non-owning refs to refcounted nodes RCU protected
An earlier patch in the series ensures that the underlying memory of nodes with bpf_refcount - which can have multiple owners - is not reused until RCU grace period has elapsed. This prevents use-after-free with non-owning references that may point to recently-freed memory. While RCU read lock is held, it's safe to dereference such a non-owning ref, as by definition RCU GP couldn't have elapsed and therefore underlying memory couldn't have been reused. From the perspective of verifier "trustedness" non-owning refs to refcounted nodes are now trusted only in RCU CS and therefore should no longer pass is_trusted_reg, but rather is_rcu_reg. Let's mark them MEM_RCU in order to reflect this new state. Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com> Link: https://lore.kernel.org/r/20230821193311.3290257-6-davemarchevsky@fb.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Dave Marchevsky
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ba2464c86f |
bpf: Reenable bpf_refcount_acquire
Now that all reported issues are fixed, bpf_refcount_acquire can be turned back on. Also reenable all bpf_refcount-related tests which were disabled. This a revert of: * commit |
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Dave Marchevsky
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7e26cd12ad |
bpf: Use bpf_mem_free_rcu when bpf_obj_dropping refcounted nodes
This is the final fix for the use-after-free scenario described in
commit
|
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Dave Marchevsky
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f0d991a070 |
bpf: Ensure kptr_struct_meta is non-NULL for collection insert and refcount_acquire
It's straightforward to prove that kptr_struct_meta must be non-NULL for
any valid call to these kfuncs:
* btf_parse_struct_metas in btf.c creates a btf_struct_meta for any
struct in user BTF with a special field (e.g. bpf_refcount,
{rb,list}_node). These are stored in that BTF's struct_meta_tab.
* __process_kf_arg_ptr_to_graph_node in verifier.c ensures that nodes
have {rb,list}_node field and that it's at the correct offset.
Similarly, check_kfunc_args ensures bpf_refcount field existence for
node param to bpf_refcount_acquire.
* So a btf_struct_meta must have been created for the struct type of
node param to these kfuncs
* That BTF and its struct_meta_tab are guaranteed to still be around.
Any arbitrary {rb,list} node the BPF program interacts with either:
came from bpf_obj_new or a collection removal kfunc in the same
program, in which case the BTF is associated with the program and
still around; or came from bpf_kptr_xchg, in which case the BTF was
associated with the map and is still around
Instead of silently continuing with NULL struct_meta, which caused
confusing bugs such as those addressed by commit
|
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Yonghong Song
|
393dc4bd92 |
bpf: Remove a WARN_ON_ONCE warning related to local kptr
Currently, in function bpf_obj_free_fields(), for local kptr, a warning will be issued if the struct does not contain any special fields. But actually the kernel seems totally okay with a local kptr without any special fields. Permitting no special fields also aligns with future percpu kptr which also allows no special fields. Acked-by: Dave Marchevsky <davemarchevsky@fb.com> Signed-off-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230824063417.201925-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Yafang Shao
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d75e30dddf |
bpf: Fix issue in verifying allow_ptr_leaks
After we converted the capabilities of our networking-bpf program from
cap_sys_admin to cap_net_admin+cap_bpf, our networking-bpf program
failed to start. Because it failed the bpf verifier, and the error log
is "R3 pointer comparison prohibited".
A simple reproducer as follows,
SEC("cls-ingress")
int ingress(struct __sk_buff *skb)
{
struct iphdr *iph = (void *)(long)skb->data + sizeof(struct ethhdr);
if ((long)(iph + 1) > (long)skb->data_end)
return TC_ACT_STOLEN;
return TC_ACT_OK;
}
Per discussion with Yonghong and Alexei [1], comparison of two packet
pointers is not a pointer leak. This patch fixes it.
Our local kernel is 6.1.y and we expect this fix to be backported to
6.1.y, so stable is CCed.
[1]. https://lore.kernel.org/bpf/CAADnVQ+Nmspr7Si+pxWn8zkE7hX-7s93ugwC+94aXSy4uQ9vBg@mail.gmail.com/
Suggested-by: Yonghong Song <yonghong.song@linux.dev>
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230823020703.3790-2-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Mark Rutland
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1dfe3a5a7c |
entry: Remove empty addr_limit_user_check()
Back when set_fs() was a generic API for altering the address limit,
addr_limit_user_check() was a safety measure to prevent userspace being
able to issue syscalls with an unbound limit.
With the the removal of set_fs() as a generic API, the last user of
addr_limit_user_check() was removed in commit:
|
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Kumar Kartikeya Dwivedi
|
6785b2edf4 |
bpf: Fix check_func_arg_reg_off bug for graph root/node
The commit being fixed introduced a hunk into check_func_arg_reg_off
that bypasses reg->off == 0 enforcement when offset points to a graph
node or root. This might possibly be done for treating bpf_rbtree_remove
and others as KF_RELEASE and then later check correct reg->off in helper
argument checks.
But this is not the case, those helpers are already not KF_RELEASE and
permit non-zero reg->off and verify it later to match the subobject in
BTF type.
However, this logic leads to bpf_obj_drop permitting free of register
arguments with non-zero offset when they point to a graph root or node
within them, which is not ok.
For instance:
struct foo {
int i;
int j;
struct bpf_rb_node node;
};
struct foo *f = bpf_obj_new(typeof(*f));
if (!f) ...
bpf_obj_drop(f); // OK
bpf_obj_drop(&f->i); // still ok from verifier PoV
bpf_obj_drop(&f->node); // Not OK, but permitted right now
Fix this by dropping the whole part of code altogether.
Fixes:
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Clive Lin
|
5f55836ab4 |
PM: QoS: Add check to make sure CPU latency is non-negative
CPU latency should never be negative, which will be incorrectly high
when converted to unsigned data type.
Commit
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Yonghong Song
|
ab6c637ad0 |
bpf: Fix a bpf_kptr_xchg() issue with local kptr
When reviewing local percpu kptr support, Alexei discovered a bug
wherea bpf_kptr_xchg() may succeed even if the map value kptr type and
locally allocated obj type do not match ([1]). Missed struct btf_id
comparison is the reason for the bug. This patch added such struct btf_id
comparison and will flag verification failure if types do not match.
[1] https://lore.kernel.org/bpf/20230819002907.io3iphmnuk43xblu@macbook-pro-8.dhcp.thefacebook.com/#t
Reported-by: Alexei Starovoitov <ast@kernel.org>
Fixes:
|
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Jiri Olsa
|
686328d80c |
bpf: Add bpf_get_func_ip helper support for uprobe link
Adding support for bpf_get_func_ip helper being called from ebpf program attached by uprobe_multi link. It returns the ip of the uprobe. Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230809083440.3209381-7-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Jiri Olsa
|
b733eeade4 |
bpf: Add pid filter support for uprobe_multi link
Adding support to specify pid for uprobe_multi link and the uprobes are created only for task with given pid value. Using the consumer.filter filter callback for that, so the task gets filtered during the uprobe installation. We still need to check the task during runtime in the uprobe handler, because the handler could get executed if there's another system wide consumer on the same uprobe (thanks Oleg for the insight). Cc: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230809083440.3209381-6-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Jiri Olsa
|
0b779b61f6 |
bpf: Add cookies support for uprobe_multi link
Adding support to specify cookies array for uprobe_multi link. The cookies array share indexes and length with other uprobe_multi arrays (offsets/ref_ctr_offsets). The cookies[i] value defines cookie for i-the uprobe and will be returned by bpf_get_attach_cookie helper when called from ebpf program hooked to that specific uprobe. Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230809083440.3209381-5-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Jiri Olsa
|
89ae89f53d |
bpf: Add multi uprobe link
Adding new multi uprobe link that allows to attach bpf program
to multiple uprobes.
Uprobes to attach are specified via new link_create uprobe_multi
union:
struct {
__aligned_u64 path;
__aligned_u64 offsets;
__aligned_u64 ref_ctr_offsets;
__u32 cnt;
__u32 flags;
} uprobe_multi;
Uprobes are defined for single binary specified in path and multiple
calling sites specified in offsets array with optional reference
counters specified in ref_ctr_offsets array. All specified arrays
have length of 'cnt'.
The 'flags' supports single bit for now that marks the uprobe as
return probe.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230809083440.3209381-4-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Jiri Olsa
|
3505cb9fa2 |
bpf: Add attach_type checks under bpf_prog_attach_check_attach_type
Add extra attach_type checks from link_create under bpf_prog_attach_check_attach_type. Suggested-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Yafang Shao <laoar.shao@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20230809083440.3209381-3-jolsa@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Hou Tao
|
c2e42ddf26 |
bpf, cpumask: Clean up bpf_cpu_map_entry directly in cpu_map_free
After synchronous_rcu(), both the dettached XDP program and xdp_do_flush() are completed, and the only user of bpf_cpu_map_entry will be cpu_map_kthread_run(), so instead of calling __cpu_map_entry_replace() to stop kthread and cleanup entry after a RCU grace period, do these things directly. Signed-off-by: Hou Tao <houtao1@huawei.com> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20230816045959.358059-3-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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|
Hou Tao
|
8f8500a247 |
bpf, cpumap: Use queue_rcu_work() to remove unnecessary rcu_barrier()
As for now __cpu_map_entry_replace() uses call_rcu() to wait for the inflight xdp program to exit the RCU read critical section, and then launch kworker cpu_map_kthread_stop() to call kthread_stop() to flush all pending xdp frames or skbs. But it is unnecessary to use rcu_barrier() in cpu_map_kthread_stop() to wait for the completion of __cpu_map_entry_free(), because rcu_barrier() will wait for all pending RCU callbacks and cpu_map_kthread_stop() only needs to wait for the completion of a specific __cpu_map_entry_free(). So use queue_rcu_work() to replace call_rcu(), schedule_work() and rcu_barrier(). queue_rcu_work() will queue a __cpu_map_entry_free() kworker after a RCU grace period. Because __cpu_map_entry_free() is running in a kworker context, so it is OK to do all of these freeing procedures include kthread_stop() in it. After the update, there is no need to do reference-counting for bpf_cpu_map_entry, because bpf_cpu_map_entry is freed directly in __cpu_map_entry_free(), so just remove it. Signed-off-by: Hou Tao <houtao1@huawei.com> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/r/20230816045959.358059-2-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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|
Elena Reshetova
|
2ddd3cac1f |
nsproxy: Convert nsproxy.count to refcount_t
atomic_t variables are currently used to implement reference counters with the following properties: - counter is initialized to 1 using atomic_set() - a resource is freed upon counter reaching zero - once counter reaches zero, its further increments aren't allowed - counter schema uses basic atomic operations (set, inc, inc_not_zero, dec_and_test, etc.) Such atomic variables should be converted to a newly provided refcount_t type and API that prevents accidental counter overflows and underflows. This is important since overflows and underflows can lead to use-after-free situation and be exploitable. The variable nsproxy.count is used as pure reference counter. Convert it to refcount_t and fix up the operations. **Important note for maintainers: Some functions from refcount_t API defined in refcount.h have different memory ordering guarantees than their atomic counterparts. Please check Documentation/core-api/refcount-vs-atomic.rst for more information. Normally the differences should not matter since refcount_t provides enough guarantees to satisfy the refcounting use cases, but in some rare cases it might matter. Please double check that you don't have some undocumented memory guarantees for this variable usage. For the nsproxy.count it might make a difference in following places: - put_nsproxy() and switch_task_namespaces(): decrement in refcount_dec_and_test() only provides RELEASE ordering and ACQUIRE ordering on success vs. fully ordered atomic counterpart Suggested-by: Kees Cook <keescook@chromium.org> Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Reviewed-by: David Windsor <dwindsor@gmail.com> Reviewed-by: Hans Liljestrand <ishkamiel@gmail.com> Reviewed-by: Christian Brauner <brauner@kernel.org> Link: https://lore.kernel.org/r/20230818041327.gonna.210-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Zheng Yejian
|
c2489bb7e6 |
tracing: Introduce pipe_cpumask to avoid race on trace_pipes
There is race issue when concurrently splice_read main trace_pipe and per_cpu trace_pipes which will result in data read out being different from what actually writen. As suggested by Steven: > I believe we should add a ref count to trace_pipe and the per_cpu > trace_pipes, where if they are opened, nothing else can read it. > > Opening trace_pipe locks all per_cpu ref counts, if any of them are > open, then the trace_pipe open will fail (and releases any ref counts > it had taken). > > Opening a per_cpu trace_pipe will up the ref count for just that > CPU buffer. This will allow multiple tasks to read different per_cpu > trace_pipe files, but will prevent the main trace_pipe file from > being opened. But because we only need to know whether per_cpu trace_pipe is open or not, using a cpumask instead of using ref count may be easier. After this patch, users will find that: - Main trace_pipe can be opened by only one user, and if it is opened, all per_cpu trace_pipes cannot be opened; - Per_cpu trace_pipes can be opened by multiple users, but each per_cpu trace_pipe can only be opened by one user. And if one of them is opened, main trace_pipe cannot be opened. Link: https://lore.kernel.org/linux-trace-kernel/20230818022645.1948314-1-zhengyejian1@huawei.com Suggested-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Jakub Kicinski
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7ff57803d2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/sfc/tc.c |
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Kees Cook
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46822860a5 |
seccomp: Add missing kerndoc notations
The kerndoc for some struct member and function arguments were missing. Add them. Cc: Andy Lutomirski <luto@amacapital.net> Cc: Will Drewry <wad@chromium.org> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202308171742.AncabIG1-lkp@intel.com/ Signed-off-by: Kees Cook <keescook@chromium.org> |
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Zheng Yejian
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eecb91b9f9 |
tracing: Fix memleak due to race between current_tracer and trace
Kmemleak report a leak in graph_trace_open():
unreferenced object 0xffff0040b95f4a00 (size 128):
comm "cat", pid 204981, jiffies 4301155872 (age 99771.964s)
hex dump (first 32 bytes):
e0 05 e7 b4 ab 7d 00 00 0b 00 01 00 00 00 00 00 .....}..........
f4 00 01 10 00 a0 ff ff 00 00 00 00 65 00 10 00 ............e...
backtrace:
[<000000005db27c8b>] kmem_cache_alloc_trace+0x348/0x5f0
[<000000007df90faa>] graph_trace_open+0xb0/0x344
[<00000000737524cd>] __tracing_open+0x450/0xb10
[<0000000098043327>] tracing_open+0x1a0/0x2a0
[<00000000291c3876>] do_dentry_open+0x3c0/0xdc0
[<000000004015bcd6>] vfs_open+0x98/0xd0
[<000000002b5f60c9>] do_open+0x520/0x8d0
[<00000000376c7820>] path_openat+0x1c0/0x3e0
[<00000000336a54b5>] do_filp_open+0x14c/0x324
[<000000002802df13>] do_sys_openat2+0x2c4/0x530
[<0000000094eea458>] __arm64_sys_openat+0x130/0x1c4
[<00000000a71d7881>] el0_svc_common.constprop.0+0xfc/0x394
[<00000000313647bf>] do_el0_svc+0xac/0xec
[<000000002ef1c651>] el0_svc+0x20/0x30
[<000000002fd4692a>] el0_sync_handler+0xb0/0xb4
[<000000000c309c35>] el0_sync+0x160/0x180
The root cause is descripted as follows:
__tracing_open() { // 1. File 'trace' is being opened;
...
*iter->trace = *tr->current_trace; // 2. Tracer 'function_graph' is
// currently set;
...
iter->trace->open(iter); // 3. Call graph_trace_open() here,
// and memory are allocated in it;
...
}
s_start() { // 4. The opened file is being read;
...
*iter->trace = *tr->current_trace; // 5. If tracer is switched to
// 'nop' or others, then memory
// in step 3 are leaked!!!
...
}
To fix it, in s_start(), close tracer before switching then reopen the
new tracer after switching. And some tracers like 'wakeup' may not update
'iter->private' in some cases when reopen, then it should be cleared
to avoid being mistakenly closed again.
Link: https://lore.kernel.org/linux-trace-kernel/20230817125539.1646321-1-zhengyejian1@huawei.com
Fixes:
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Peter Zijlstra
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63304558ba |
sched/eevdf: Curb wakeup-preemption
Mike and others noticed that EEVDF does like to over-schedule quite a bit -- which does hurt performance of a number of benchmarks / workloads. In particular, what seems to cause over-scheduling is that when lag is of the same order (or larger) than the request / slice then placement will not only cause the task to be placed left of current, but also with a smaller deadline than current, which causes immediate preemption. [ notably, lag bounds are relative to HZ ] Mike suggested we stick to picking 'current' for as long as it's eligible to run, giving it uninterrupted runtime until it reaches parity with the pack. Augment Mike's suggestion by only allowing it to exhaust it's initial request. One random data point: echo NO_RUN_TO_PARITY > /debug/sched/features perf stat -a -e context-switches --repeat 10 -- perf bench sched messaging -g 20 -t -l 5000 3,723,554 context-switches ( +- 0.56% ) 9.5136 +- 0.0394 seconds time elapsed ( +- 0.41% ) echo RUN_TO_PARITY > /debug/sched/features perf stat -a -e context-switches --repeat 10 -- perf bench sched messaging -g 20 -t -l 5000 2,556,535 context-switches ( +- 0.51% ) 9.2427 +- 0.0302 seconds time elapsed ( +- 0.33% ) Suggested-by: Mike Galbraith <umgwanakikbuti@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20230816134059.GC982867@hirez.programming.kicks-ass.net |
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Paul E. McKenney
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fe24a0b632 |
Merge branches 'doc.2023.07.14b', 'fixes.2023.08.16a', 'rcu-tasks.2023.07.24a', 'rcuscale.2023.07.14b', 'refscale.2023.07.14b', 'torture.2023.08.14a' and 'torturescripts.2023.07.20a' into HEAD
doc.2023.07.14b: Documentation updates. fixes.2023.08.16a: Miscellaneous fixes. rcu-tasks.2023.07.24a: RCU Tasks updates. rcuscale.2023.07.14b: RCU (updater) scalability test updates. refscale.2023.07.14b: Reference (reader) scalability test updates. torture.2023.08.14a: Other torture-test updates. torturescripts.2023.07.20a: Other torture-test scripting updates. |
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Paul E. McKenney
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3292ba0229 |
rcu: Make the rcu_nocb_poll boot parameter usable via boot config
The rcu_nocb_poll kernel boot parameter is defined via early_param(), whose parsing functions are invoked from parse_early_param() which is in turn invoked by setup_arch(), which is very early indeed. It is invoked so early that the console output timestamps read 0.000000, in other words, before time begins. This use of early_param() means that the rcu_nocb_poll kernel boot parameter cannot usefully be embedded into the kernel image. Yes, you can embed it, but setup_boot_config() is invoked from start_kernel() too late for it to be parsed. But it makes no sense to parse this parameter so early. After all, it cannot do anything until the rcuog kthreads are created, which is long after rcu_init() time, let alone setup_boot_config() time. This commit therefore switches the rcu_nocb_poll kernel boot parameter from early_param() to __setup(), which allows boot-config parsing of this parameter, in turn allowing it to be embedded into the kernel image. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org> |