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7895 commits
Author | SHA1 | Message | Date | |
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Linus Torvalds
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e2ed78d5d9 |
linux-kselftest-kunit-next-6.2-rc1
This KUnit next update for Linux 6.2-rc1 consists of several enhancements, fixes, clean-ups, documentation updates, improvements to logging and KTAP compliance of KUnit test output: - log numbers in decimal and hex - parse KTAP compliant test output - allow conditionally exposing static symbols to tests when KUNIT is enabled - make static symbols visible during kunit testing - clean-ups to remove unused structure definition -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmOXnPYACgkQCwJExA0N Qxwf9RAAwdBKxgPZuKZ40v69Jm8YhaO3vyKUkyYRH59/HQGFUHMA2f2ONez4krEX iXPgBFQ+7pB63FdgQi2HSg2z/u3xY02AaGgZGXDuNJDmg2xYjNDfZ0GjN6tuavlN Liz01DGZkjZoVVXM6oV2xT8woBg/0BbdkKNL1OBO9RBZFHzwDryRzfXmQb8cKlNr S+tkeZTlCA/s7UW2LNj4VlTzn6wgni4Y9gSk4wbQmSGWn3OX3rHaqAb7GiZ/yPGb 1WjbMeE8FwyydLU40aOZZ8V6AJRiw5VGPJyFzWJyWZ21xOgN9Z95b+I36z8RXraA i/wnazO/FJsrhzvKL83rQkrSW6bpmVY+jGvk+L6deFM6Ro/vEWHJ4DgyKsIdMiJy gUM1Q69szptq+ZRHGrZWPlVONBkBXMOL+fePbCbGcMzlaEAS/zsFYW9IBKcvLzwP uHzzMS/cMmSUq52ZIyl9jhHQFVSoErCpJwQjAaZBQpYXPmE7yLcZItxnCaSUQTay bRwyps5ph5md0oJTTFJKZ4Zx5FJ2ItjbC4y9BIexb9gYRDdRq723ivDoVENZl/Zk DFIV95AY+mSxadS5vFagwWwX0ZN0KFKxeM8Tw7VTimal/0Sbglqp+oflsuKFD6JQ b5HUixYifKMbWxkH5xrUb8NdjmBj561TYa8U4N+j3oOiaPYu5Ss= =UQNn -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-kunit-next-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit updates from Shuah Khan: "Several enhancements, fixes, clean-ups, documentation updates, improvements to logging and KTAP compliance of KUnit test output: - log numbers in decimal and hex - parse KTAP compliant test output - allow conditionally exposing static symbols to tests when KUNIT is enabled - make static symbols visible during kunit testing - clean-ups to remove unused structure definition" * tag 'linux-kselftest-kunit-next-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (29 commits) Documentation: dev-tools: Clarify requirements for result description apparmor: test: make static symbols visible during kunit testing kunit: add macro to allow conditionally exposing static symbols to tests kunit: tool: make parser preserve whitespace when printing test log Documentation: kunit: Fix "How Do I Use This" / "Next Steps" sections kunit: tool: don't include KTAP headers and the like in the test log kunit: improve KTAP compliance of KUnit test output kunit: tool: parse KTAP compliant test output mm: slub: test: Use the kunit_get_current_test() function kunit: Use the static key when retrieving the current test kunit: Provide a static key to check if KUnit is actively running tests kunit: tool: make --json do nothing if --raw_ouput is set kunit: tool: tweak error message when no KTAP found kunit: remove KUNIT_INIT_MEM_ASSERTION macro Documentation: kunit: Remove redundant 'tips.rst' page Documentation: KUnit: reword description of assertions Documentation: KUnit: make usage.rst a superset of tips.rst, remove duplication kunit: eliminate KUNIT_INIT_*_ASSERT_STRUCT macros kunit: tool: remove redundant file.close() call in unit test kunit: tool: unit tests all check parser errors, standardize formatting a bit ... |
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Linus Torvalds
|
268325bda5 |
Random number generator updates for Linux 6.2-rc1.
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEq5lC5tSkz8NBJiCnSfxwEqXeA64FAmOU+U8ACgkQSfxwEqXe A67NnQ//Y5DltmvibyPd7r1TFT2gUYv+Rx3sUV9ZE1NYptd/SWhhcL8c5FZ70Fuw bSKCa1uiWjOxosjXT1kGrWq3de7q7oUpAPSOGxgxzoaNURIt58N/ajItCX/4Au8I RlGAScHy5e5t41/26a498kB6qJ441fBEqCYKQpPLINMBAhe8TQ+NVp0rlpUwNHFX WrUGg4oKWxdBIW3HkDirQjJWDkkAiklRTifQh/Al4b6QDbOnRUGGCeckNOhixsvS waHWTld+Td8jRrA4b82tUb2uVZ2/b8dEvj/A8CuTv4yC0lywoyMgBWmJAGOC+UmT ZVNdGW02Jc2T+Iap8ZdsEmeLHNqbli4+IcbY5xNlov+tHJ2oz41H9TZoYKbudlr6 /ReAUPSn7i50PhbQlEruj3eg+M2gjOeh8OF8UKwwRK8PghvyWQ1ScW0l3kUhPIhI PdIG6j4+D2mJc1FIj2rTVB+Bg933x6S+qx4zDxGlNp62AARUFYf6EgyD6aXFQVuX RxcKb6cjRuFkzFiKc8zkqg5edZH+IJcPNuIBmABqTGBOxbZWURXzIQvK/iULqZa4 CdGAFIs6FuOh8pFHLI3R4YoHBopbHup/xKDEeAO9KZGyeVIuOSERDxxo5f/ITzcq APvT77DFOEuyvanr8RMqqh0yUjzcddXqw9+ieufsAyDwjD9DTuE= =QRhK -----END PGP SIGNATURE----- Merge tag 'random-6.2-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random Pull random number generator updates from Jason Donenfeld: - Replace prandom_u32_max() and various open-coded variants of it, there is now a new family of functions that uses fast rejection sampling to choose properly uniformly random numbers within an interval: get_random_u32_below(ceil) - [0, ceil) get_random_u32_above(floor) - (floor, U32_MAX] get_random_u32_inclusive(floor, ceil) - [floor, ceil] Coccinelle was used to convert all current users of prandom_u32_max(), as well as many open-coded patterns, resulting in improvements throughout the tree. I'll have a "late" 6.1-rc1 pull for you that removes the now unused prandom_u32_max() function, just in case any other trees add a new use case of it that needs to converted. According to linux-next, there may be two trivial cases of prandom_u32_max() reintroductions that are fixable with a 's/.../.../'. So I'll have for you a final conversion patch doing that alongside the removal patch during the second week. This is a treewide change that touches many files throughout. - More consistent use of get_random_canary(). - Updates to comments, documentation, tests, headers, and simplification in configuration. - The arch_get_random*_early() abstraction was only used by arm64 and wasn't entirely useful, so this has been replaced by code that works in all relevant contexts. - The kernel will use and manage random seeds in non-volatile EFI variables, refreshing a variable with a fresh seed when the RNG is initialized. The RNG GUID namespace is then hidden from efivarfs to prevent accidental leakage. These changes are split into random.c infrastructure code used in the EFI subsystem, in this pull request, and related support inside of EFISTUB, in Ard's EFI tree. These are co-dependent for full functionality, but the order of merging doesn't matter. - Part of the infrastructure added for the EFI support is also used for an improvement to the way vsprintf initializes its siphash key, replacing an sleep loop wart. - The hardware RNG framework now always calls its correct random.c input function, add_hwgenerator_randomness(), rather than sometimes going through helpers better suited for other cases. - The add_latent_entropy() function has long been called from the fork handler, but is a no-op when the latent entropy gcc plugin isn't used, which is fine for the purposes of latent entropy. But it was missing out on the cycle counter that was also being mixed in beside the latent entropy variable. So now, if the latent entropy gcc plugin isn't enabled, add_latent_entropy() will expand to a call to add_device_randomness(NULL, 0), which adds a cycle counter, without the absent latent entropy variable. - The RNG is now reseeded from a delayed worker, rather than on demand when used. Always running from a worker allows it to make use of the CPU RNG on platforms like S390x, whose instructions are too slow to do so from interrupts. It also has the effect of adding in new inputs more frequently with more regularity, amounting to a long term transcript of random values. Plus, it helps a bit with the upcoming vDSO implementation (which isn't yet ready for 6.2). - The jitter entropy algorithm now tries to execute on many different CPUs, round-robining, in hopes of hitting even more memory latencies and other unpredictable effects. It also will mix in a cycle counter when the entropy timer fires, in addition to being mixed in from the main loop, to account more explicitly for fluctuations in that timer firing. And the state it touches is now kept within the same cache line, so that it's assured that the different execution contexts will cause latencies. * tag 'random-6.2-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: (23 commits) random: include <linux/once.h> in the right header random: align entropy_timer_state to cache line random: mix in cycle counter when jitter timer fires random: spread out jitter callback to different CPUs random: remove extraneous period and add a missing one in comments efi: random: refresh non-volatile random seed when RNG is initialized vsprintf: initialize siphash key using notifier random: add back async readiness notifier random: reseed in delayed work rather than on-demand random: always mix cycle counter in add_latent_entropy() hw_random: use add_hwgenerator_randomness() for early entropy random: modernize documentation comment on get_random_bytes() random: adjust comment to account for removed function random: remove early archrandom abstraction random: use random.trust_{bootloader,cpu} command line option only stackprotector: actually use get_random_canary() stackprotector: move get_random_canary() into stackprotector.h treewide: use get_random_u32_inclusive() when possible treewide: use get_random_u32_{above,below}() instead of manual loop treewide: use get_random_u32_below() instead of deprecated function ... |
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Linus Torvalds
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a312a8cc3c |
cgroup changes for v6.2-rc1
Nothing too interesting. * Add CONFIG_DEBUG_GROUP_REF which makes cgroup refcnt operations kprobable. * A couple cpuset optimizations. * Other misc changes including doc and test updates. -----BEGIN PGP SIGNATURE----- iIQEABYIACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCY5bHvg4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGcYrAQCfrlzrbWw6gTQ7fmr0Avxjy5FxLjsdzEGPcmGY ByEMhgD/VdUf3zI/Khr91Gsi5JXQxQf7a5caD369xupRWUWjqA8= =Nf+E -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: "Nothing too interesting: - Add CONFIG_DEBUG_GROUP_REF which makes cgroup refcnt operations kprobable - A couple cpuset optimizations - Other misc changes including doc and test updates" * tag 'cgroup-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: remove rcu_read_lock()/rcu_read_unlock() in critical section of spin_lock_irq() cgroup/cpuset: Improve cpuset_css_alloc() description kselftest/cgroup: Add cleanup() to test_cpuset_prs.sh cgroup/cpuset: Optimize cpuset_attach() on v2 cgroup/cpuset: Skip spread flags update on v2 kselftest/cgroup: Fix gathering number of CPUs cgroup: cgroup refcnt functions should be exported when CONFIG_DEBUG_CGROUP_REF cgroup: Implement DEBUG_CGROUP_REF |
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Linus Torvalds
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c1f0fcd85d |
cxl for 6.2
- Add the cpu_cache_invalidate_memregion() API for cache flushing in response to physical memory reconfiguration, or memory-side data invalidation from operations like secure erase or memory-device unlock. - Add a facility for the kernel to warn about collisions between kernel and userspace access to PCI configuration registers - Add support for Restricted CXL Host (RCH) topologies (formerly CXL 1.1) - Add handling and reporting of CXL errors reported via the PCIe AER mechanism - Add support for CXL Persistent Memory Security commands - Add support for the "XOR" algorithm for CXL host bridge interleave - Rework / simplify CXL to NVDIMM interactions - Miscellaneous cleanups and fixes -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSbo+XnGs+rwLz9XGXfioYZHlFsZwUCY5UpyAAKCRDfioYZHlFs Z0ttAP4uxCjIibKsFVyexpSgI4vaZqQ9yt9NesmPwonc0XookwD+PlwP6Xc0d0Ox t0gJ6+pwdh11NRzhcNE1pAaPcJZU4gs= =HAQk -----END PGP SIGNATURE----- Merge tag 'cxl-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull cxl updates from Dan Williams: "Compute Express Link (CXL) updates for 6.2. While it may seem backwards, the CXL update this time around includes some focus on CXL 1.x enabling where the work to date had been with CXL 2.0 (VH topologies) in mind. First generation CXL can mostly be supported via BIOS, similar to DDR, however it became clear there are use cases for OS native CXL error handling and some CXL 3.0 endpoint features can be deployed on CXL 1.x hosts (Restricted CXL Host (RCH) topologies). So, this update brings RCH topologies into the Linux CXL device model. In support of the ongoing CXL 2.0+ enabling two new core kernel facilities are added. One is the ability for the kernel to flag collisions between userspace access to PCI configuration registers and kernel accesses. This is brought on by the PCIe Data-Object-Exchange (DOE) facility, a hardware mailbox over config-cycles. The other is a cpu_cache_invalidate_memregion() API that maps to wbinvd_on_all_cpus() on x86. To prevent abuse it is disabled in guest VMs and architectures that do not support it yet. The CXL paths that need it, dynamic memory region creation and security commands (erase / unlock), are disabled when it is not present. As for the CXL 2.0+ this cycle the subsystem gains support Persistent Memory Security commands, error handling in response to PCIe AER notifications, and support for the "XOR" host bridge interleave algorithm. Summary: - Add the cpu_cache_invalidate_memregion() API for cache flushing in response to physical memory reconfiguration, or memory-side data invalidation from operations like secure erase or memory-device unlock. - Add a facility for the kernel to warn about collisions between kernel and userspace access to PCI configuration registers - Add support for Restricted CXL Host (RCH) topologies (formerly CXL 1.1) - Add handling and reporting of CXL errors reported via the PCIe AER mechanism - Add support for CXL Persistent Memory Security commands - Add support for the "XOR" algorithm for CXL host bridge interleave - Rework / simplify CXL to NVDIMM interactions - Miscellaneous cleanups and fixes" * tag 'cxl-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (71 commits) cxl/region: Fix memdev reuse check cxl/pci: Remove endian confusion cxl/pci: Add some type-safety to the AER trace points cxl/security: Drop security command ioctl uapi cxl/mbox: Add variable output size validation for internal commands cxl/mbox: Enable cxl_mbox_send_cmd() users to validate output size cxl/security: Fix Get Security State output payload endian handling cxl: update names for interleave ways conversion macros cxl: update names for interleave granularity conversion macros cxl/acpi: Warn about an invalid CHBCR in an existing CHBS entry tools/testing/cxl: Require cache invalidation bypass cxl/acpi: Fail decoder add if CXIMS for HBIG is missing cxl/region: Fix spelling mistake "memergion" -> "memregion" cxl/regs: Fix sparse warning cxl/acpi: Set ACPI's CXL _OSC to indicate RCD mode support tools/testing/cxl: Add an RCH topology cxl/port: Add RCD endpoint port enumeration cxl/mem: Move devm_cxl_add_endpoint() from cxl_core to cxl_mem tools/testing/cxl: Add XOR Math support to cxl_test cxl/acpi: Support CXL XOR Interleave Math (CXIMS) ... |
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Rae Moar
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6c738b5231 |
kunit: improve KTAP compliance of KUnit test output
Change KUnit test output to better comply with KTAP v1 specifications found here: https://kernel.org/doc/html/latest/dev-tools/ktap.html. 1) Use "KTAP version 1" instead of "TAP version 14" as test output header 2) Remove '-' between test number and test name on test result lines 2) Add KTAP version lines to each subtest header as well Note that the new KUnit output still includes the “# Subtest” line now located after the KTAP version line. This does not completely match the KTAP v1 spec but since it is classified as a diagnostic line, it is not expected to be disruptive or break any existing parsers. This “# Subtest” line comes from the TAP 14 spec (https://testanything.org/tap-version-14-specification.html) and it is used to define the test name before the results. Original output: TAP version 14 1..1 # Subtest: kunit-test-suite 1..3 ok 1 - kunit_test_1 ok 2 - kunit_test_2 ok 3 - kunit_test_3 # kunit-test-suite: pass:3 fail:0 skip:0 total:3 # Totals: pass:3 fail:0 skip:0 total:3 ok 1 - kunit-test-suite New output: KTAP version 1 1..1 KTAP version 1 # Subtest: kunit-test-suite 1..3 ok 1 kunit_test_1 ok 2 kunit_test_2 ok 3 kunit_test_3 # kunit-test-suite: pass:3 fail:0 skip:0 total:3 # Totals: pass:3 fail:0 skip:0 total:3 ok 1 kunit-test-suite Signed-off-by: Rae Moar <rmoar@google.com> Reviewed-by: Daniel Latypov <dlatypov@google.com> Reviewed-by: David Gow <davidgow@google.com> Tested-by: Anders Roxell <anders.roxell@linaro.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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David Gow
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909c6475d5 |
mm: slub: test: Use the kunit_get_current_test() function
Use the newly-added function kunit_get_current_test() instead of accessing current->kunit_test directly. This function uses a static key to return more quickly when KUnit is enabled, but no tests are actively running. There should therefore be a negligible performance impact to enabling the slub KUnit tests. Other than the performance improvement, this should be a no-op. Cc: Oliver Glitta <glittao@gmail.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Gow <davidgow@google.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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David Gow
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908d0c177b |
kunit: Provide a static key to check if KUnit is actively running tests
KUnit does a few expensive things when enabled. This hasn't been a problem because KUnit was only enabled on test kernels, but with a few people enabling (but not _using_) KUnit on production systems, we need a runtime way of handling this. Provide a 'kunit_running' static key (defaulting to false), which allows us to hide any KUnit code behind a static branch. This should reduce the performance impact (on other code) of having KUnit enabled to a single NOP when no tests are running. Note that, while it looks unintuitive, tests always run entirely within __kunit_test_suites_init(), so it's safe to decrement the static key at the end of this function, rather than in __kunit_test_suites_exit(), which is only there to clean up results in debugfs. Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Daniel Latypov <dlatypov@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Linus Torvalds
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f10bc40168 |
A single update for debugobjetcs:
Add the object pointer to the debug output for better correlation with other debug facilities. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmOUeukTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoWdCD/93/TiOebMyE/ghYWzmbgXPgCS2WD8H Wo7mRqm//4ZkKlpfurSQMjsdabdUyxeD7rSmxk4bgiz6RM9gAiK4ruRg/36tWzoS 2seTgsPaYiluTCI5k6buWejBmO72d3yTAypmnAjHc8yRYverHEEkcUGnxMtiUowg XhmAsFf02zNlTZjwgNAoDDAoEWICTdozWg74j0vYmCP3oH9i08n9JI+TK14C8dUr Rnhigq5mdDDsrNk7336dNPbg5yudT1IPNFtckV+FQ4xIi6xZEsfcP+XMw/K//pEL EJ2WItkcVPCXZCsfHr4QcFgtSDd+XPYcYKvenwLdctceT1/Kely7soYsi1nSc7FA 46Bp+qeVyiASqbYw1O2U4Zec/DEcjdd4PH0ISs2zxX2t1N63F5e6WZ1kfI9IQRA6 wjA9KGD86hX5DCtAUF0zGZNUcSHXjELuL8RNLXlnK3ahDQLNi2hrKrLNLEk9368C BfWjjSDHXY/SK8uITHcwjjCmmTb8YdftLJlxpE35n/tTKdyKxpN4HQBK/dAiaD2/ CsfzyH5XdIDe0jdLo1AT+ukhpSjGetWStbBx9wFY7E88OIIBQfGbwHYofZRcu0+f IjXQxObFO2xqd3U28rM5Oa6Xv/s16tcKxkULxO3lzeDMZ3TD9HzbiJds8Dq8223g I/I7kIrd/XjVag== =JERo -----END PGP SIGNATURE----- Merge tag 'core-debugobjects-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull debugobjects update from Thomas Gleixner: "A single update for debugobjects: Add the object pointer to the debug output for better correlation with other debug facilities" * tag 'core-debugobjects-2022-12-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: debugobjects: Print object pointer in debug_print_object() |
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Linus Torvalds
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47477c84b8 |
s390 updates for 6.2 merge window
- Factor out handle_write() function and simplify 3215 console write operation. - When 3170 terminal emulator is connected to the 3215 console driver the boot time could be very long due to limited buffer space or missing operator input. Add con3215_drop command line parameter and con3215_drop sysfs attribute file to instruct the kernel drop console data when such conditions are met. - Fix white space errors in 3215 console driver. - Move enum paiext_mode definition to a header file and rename it to paievt_mode to indicate this is now used for several events. Rename PAI_MODE_COUNTER to PAI_MODE_COUNTING to make consistent with PAI_MODE_SAMPLING. - Simplify the logic of PMU pai_crypto mapped buffer reference counter and make it consistent with PMU pai_ext. - Rename PMU pai_crypto mapped buffer structure member users to active_events to make it consistent with PMU pai_ext. - Enable HUGETLB_PAGE_OPTIMIZE_VMEMMAP configuration option. This results in saving of 12K per 1M hugetlb page (~1.2%) and 32764K per 2G hugetlb page (~1.6%). - Use generic serial.h, bugs.h, shmparam.h and vga.h header files and scrap s390-specific versions. - The generic percpu setup code does not expect the s390-like implementation and emits a warning. To get rid of that warning and provide sane CPU-to-node and CPU-to-CPU distance mappings implementat a minimal version of setup_per_cpu_areas(). - Use kstrtobool() instead of strtobool() for re-IPL sysfs device attributes. - Avoid unnecessary lookup of a pointer to MSI descriptor when setting IRQ affinity for a PCI device. - Get rid of "an incompatible function type cast" warning by changing debug_sprintf_format_fn() function prototype so it matches the debug_format_proc_t function type. - Remove unused info_blk_hdr__pcpus() and get_page_state() functions. - Get rid of clang "unused unused insn cache ops function" warning by moving s390_insn definition to a private header. - Get rid of clang "unused function" warning by making function raw3270_state_final() only available if CONFIG_TN3270_CONSOLE is enabled. - Use kstrobool() to parse sclp_con_drop parameter to make it identical to the con3215_drop parameter and allow passing values like "yes" and "true". - Use sysfs_emit() for all SCLP sysfs show functions, which is the current standard way to generate output strings. - Make SCLP con_drop sysfs attribute also writable and allow to change its value during runtime. This makes SCLP console drop handling consistent with the 3215 device driver. - Virtual and physical addresses are indentical on s390. However, there is still a confusion when pointers are directly casted to physical addresses or vice versa. Use correct address converters virt_to_phys() and phys_to_virt() for s390 channel IO drivers. - Support for power managemant has been removed from s390 since quite some time. Remove unused power managemant code from the appldata device driver. - Allow memory tools like KASAN see memory accesses from the checksum code. Switch to GENERIC_CSUM if KASAN is enabled, just like x86 does. - Add support of ECKD DASDs disks so it could be used as boot and dump devices. - Follow checkpatch recommendations and use octal values instead of S_IRUGO and S_IWUSR for dump device attributes in sysfs. - Changes to vx-insn.h do not cause a recompile of C files that use asm(".include \"asm/vx-insn.h\"\n") magic to access vector instruction macros from inline assemblies. Add wrapper include header file to avoid this problem. - Use vector instruction macros instead of byte patterns to increase register validation routine readability. - The current machine check register validation handling does not take into account various scenarios and might lead to killing a wrong user process or potentially ignore corrupted FPU registers. Simplify logic of the machine check handler and stop the whole machine if the previous context was kerenel mode. If the previous context was user mode, kill the current task. - Introduce sclp_emergency_printk() function which can be used to emit a message in emergency cases. It is supposed to be used in cases where regular console device drivers may not work anymore, e.g. unrecoverable machine checks. Keep the early Service-Call Control Block so it can also be used after initdata has been freed to allow sclp_emergency_printk() implementation. - In case a system will be stopped because of an unrecoverable machine check error print the machine check interruption code to give a hint of what went wrong. - Move storage error checking from the assembly entry code to C in order to simplify machine check handling. Enter the handler with DAT turned on, which simplifies the entry code even more. - The machine check extended save areas are allocated using a private "nmi_save_areas" slab cache which guarantees a required power-of-two alignment. Get rid of that cache in favour of kmalloc(). -----BEGIN PGP SIGNATURE----- iI0EABYIADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCY5ckrhccYWdvcmRlZXZA bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8NlrAQD8NCLeEAkhGCRnzdTyngExCrzV Mw//cEnksUkIPqalJgEArbyFjGh05ecNaiDQduH8Gh94/qOhGE4obMdTgMWq7QY= =3aou -----END PGP SIGNATURE----- Merge tag 's390-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Alexander Gordeev: - Factor out handle_write() function and simplify 3215 console write operation - When 3170 terminal emulator is connected to the 3215 console driver the boot time could be very long due to limited buffer space or missing operator input. Add con3215_drop command line parameter and con3215_drop sysfs attribute file to instruct the kernel drop console data when such conditions are met - Fix white space errors in 3215 console driver - Move enum paiext_mode definition to a header file and rename it to paievt_mode to indicate this is now used for several events. Rename PAI_MODE_COUNTER to PAI_MODE_COUNTING to make consistent with PAI_MODE_SAMPLING - Simplify the logic of PMU pai_crypto mapped buffer reference counter and make it consistent with PMU pai_ext - Rename PMU pai_crypto mapped buffer structure member users to active_events to make it consistent with PMU pai_ext - Enable HUGETLB_PAGE_OPTIMIZE_VMEMMAP configuration option. This results in saving of 12K per 1M hugetlb page (~1.2%) and 32764K per 2G hugetlb page (~1.6%) - Use generic serial.h, bugs.h, shmparam.h and vga.h header files and scrap s390-specific versions - The generic percpu setup code does not expect the s390-like implementation and emits a warning. To get rid of that warning and provide sane CPU-to-node and CPU-to-CPU distance mappings implementat a minimal version of setup_per_cpu_areas() - Use kstrtobool() instead of strtobool() for re-IPL sysfs device attributes - Avoid unnecessary lookup of a pointer to MSI descriptor when setting IRQ affinity for a PCI device - Get rid of "an incompatible function type cast" warning by changing debug_sprintf_format_fn() function prototype so it matches the debug_format_proc_t function type - Remove unused info_blk_hdr__pcpus() and get_page_state() functions - Get rid of clang "unused unused insn cache ops function" warning by moving s390_insn definition to a private header - Get rid of clang "unused function" warning by making function raw3270_state_final() only available if CONFIG_TN3270_CONSOLE is enabled - Use kstrobool() to parse sclp_con_drop parameter to make it identical to the con3215_drop parameter and allow passing values like "yes" and "true" - Use sysfs_emit() for all SCLP sysfs show functions, which is the current standard way to generate output strings - Make SCLP con_drop sysfs attribute also writable and allow to change its value during runtime. This makes SCLP console drop handling consistent with the 3215 device driver - Virtual and physical addresses are indentical on s390. However, there is still a confusion when pointers are directly casted to physical addresses or vice versa. Use correct address converters virt_to_phys() and phys_to_virt() for s390 channel IO drivers - Support for power managemant has been removed from s390 since quite some time. Remove unused power managemant code from the appldata device driver - Allow memory tools like KASAN see memory accesses from the checksum code. Switch to GENERIC_CSUM if KASAN is enabled, just like x86 does - Add support of ECKD DASDs disks so it could be used as boot and dump devices - Follow checkpatch recommendations and use octal values instead of S_IRUGO and S_IWUSR for dump device attributes in sysfs - Changes to vx-insn.h do not cause a recompile of C files that use asm(".include \"asm/vx-insn.h\"\n") magic to access vector instruction macros from inline assemblies. Add wrapper include header file to avoid this problem - Use vector instruction macros instead of byte patterns to increase register validation routine readability - The current machine check register validation handling does not take into account various scenarios and might lead to killing a wrong user process or potentially ignore corrupted FPU registers. Simplify logic of the machine check handler and stop the whole machine if the previous context was kerenel mode. If the previous context was user mode, kill the current task - Introduce sclp_emergency_printk() function which can be used to emit a message in emergency cases. It is supposed to be used in cases where regular console device drivers may not work anymore, e.g. unrecoverable machine checks Keep the early Service-Call Control Block so it can also be used after initdata has been freed to allow sclp_emergency_printk() implementation - In case a system will be stopped because of an unrecoverable machine check error print the machine check interruption code to give a hint of what went wrong - Move storage error checking from the assembly entry code to C in order to simplify machine check handling. Enter the handler with DAT turned on, which simplifies the entry code even more - The machine check extended save areas are allocated using a private "nmi_save_areas" slab cache which guarantees a required power-of-two alignment. Get rid of that cache in favour of kmalloc() * tag 's390-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (38 commits) s390/nmi: get rid of private slab cache s390/nmi: move storage error checking back to C, enter with DAT on s390/nmi: print machine check interruption code before stopping system s390/sclp: introduce sclp_emergency_printk() s390/sclp: keep sclp_early_sccb s390/nmi: rework register validation handling s390/nmi: use vector instruction macros instead of byte patterns s390/vx: add vx-insn.h wrapper include file s390/ipl: use octal values instead of S_* macros s390/ipl: add eckd dump support s390/ipl: add eckd support vfio/ccw: identify CCW data addresses as physical vfio/ccw: sort out physical vs virtual pointers usage s390/checksum: support GENERIC_CSUM, enable it for KASAN s390/appldata: remove power management callbacks s390/cio: sort out physical vs virtual pointers usage s390/sclp: allow to change sclp_console_drop during runtime s390/sclp: convert to use sysfs_emit() s390/sclp: use kstrobool() to parse sclp_con_drop parameter s390/3270: make raw3270_state_final() depend on CONFIG_TN3270_CONSOLE ... |
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Linus Torvalds
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893660b0e1 |
slab updates for 6.2-rc1
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEjUuTAak14xi+SF7M4CHKc/GJqRAFAmOTQvYACgkQ4CHKc/GJ qRCaqQf/UjCDmj1vYKcsTzp5L4MDXdQPA7dKtytbnZtROtClVNUzB0jODsfeMI7C SwbDJRoUU1y99GRFYIx9oGji1q7TYOWS/PsZxOGkv8ILommmQ1kJdZdxt9rOqYNg 3mjCZoQmZMIRipLDrN55C096Mi+mI89kkE4Lkyrigpmxvc0KyX6QBerr+VmaBMHw DjmFC6Gj+ZH2AX6z7AzOF1gZ42gPBQUjWdHFRcY41dShOQZNl2FPT5ITAvotlJlH 9mj6woCqW936UOcpUl+Qqk7mekDJb1hqmYXV2VAlhprBi6Vcd9PU6GmPPb6w51bS HkSNNYjkbuNxBXY13PUPcR0hEHv9zw== =AlWx -----END PGP SIGNATURE----- Merge tag 'slab-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: - SLOB deprecation and SLUB_TINY The SLOB allocator adds maintenance burden and stands in the way of API improvements [1]. Deprecate it by renaming the config option (to make users notice) to CONFIG_SLOB_DEPRECATED with updated help text. SLUB should be used instead as SLAB will be the next on the removal list. Based on reports from a riscv k210 board with 8MB RAM, add a CONFIG_SLUB_TINY option to minimize SLUB's memory usage at the expense of scalability. This has resolved the k210 regression [2] so in case there are no others (that wouldn't be resolvable by further tweaks to SLUB_TINY) plan is to remove SLOB in a few cycles. Existing defconfigs with CONFIG_SLOB are converted to CONFIG_SLUB_TINY. - kmalloc() slub_debug redzone improvements A series from Feng Tang that builds on the tracking or requested size for kmalloc() allocations (for caches with debugging enabled) added in 6.1, to make redzone checks consider the requested size and not the rounded up one, in order to catch more subtle buffer overruns. Includes new slub_kunit test. - struct slab fields reordering to accomodate larger rcu_head RCU folks would like to grow rcu_head with debugging options, which breaks current struct slab layout's assumptions, so reorganize it to make this possible. - Miscellaneous improvements/fixes: - __alloc_size checking compiler workaround (Kees Cook) - Optimize and cleanup SLUB's sysfs init (Rasmus Villemoes) - Make SLAB compatible with PROVE_RAW_LOCK_NESTING (Jiri Kosina) - Correct SLUB's percpu allocation estimates (Baoquan He) - Re-enableS LUB's run-time failslab sysfs control (Alexander Atanasov) - Make tools/vm/slabinfo more user friendly when not run as root (Rong Tao) - Dead code removal in SLUB (Hyeonggon Yoo) * tag 'slab-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (31 commits) mm, slob: rename CONFIG_SLOB to CONFIG_SLOB_DEPRECATED mm, slub: don't aggressively inline with CONFIG_SLUB_TINY mm, slub: remove percpu slabs with CONFIG_SLUB_TINY mm, slub: split out allocations from pre/post hooks mm/slub, kunit: Add a test case for kmalloc redzone check mm/slub, kunit: add SLAB_SKIP_KFENCE flag for cache creation mm, slub: refactor free debug processing mm, slab: ignore SLAB_RECLAIM_ACCOUNT with CONFIG_SLUB_TINY mm, slub: don't create kmalloc-rcl caches with CONFIG_SLUB_TINY mm, slub: lower the default slub_max_order with CONFIG_SLUB_TINY mm, slub: retain no free slabs on partial list with CONFIG_SLUB_TINY mm, slub: disable SYSFS support with CONFIG_SLUB_TINY mm, slub: add CONFIG_SLUB_TINY mm, slab: ignore hardened usercopy parameters when disabled slab: Remove special-casing of const 0 size allocations slab: Clean up SLOB vs kmalloc() definition mm/sl[au]b: rearrange struct slab fields to allow larger rcu_head mm/migrate: make isolate_movable_page() skip slab pages mm/slab: move and adjust kernel-doc for kmem_cache_alloc mm/slub, percpu: correct the calculation of early percpu allocation size ... |
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Linus Torvalds
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98d0052d0d |
printk changes for 6.2
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Linus Torvalds
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3a28c2c89f |
Enable -funsigned-char and fix code affected by that flag.
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Linus Torvalds
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f433cf2102 |
KCSAN updates for v6.2
This series adds instrumentation for memcpy(), memset(), and memmove() for Clang v16+'s new function names that are used when the -fsanitize=thread argument is given. It also fixes objtool warnings from KCSAN's volatile instrumentation, and fixes a pair of typos in a pair of Kconfig options' help clauses. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmOKn5gTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jHoyD/9gkMct9vIgKRZbMYW9haoLIJlYiwrT sps8x2PssOwy99I89BTEovnIyPdQ9y3uLuHWMHAUcSN0JZqe797OIEnFImPiXPQF q2dEg4zeHXGlD0+EDpr+FUcu1Sc4ppk2AqQiS4YiIfQzunS2RMETB+FkehLDMmgm sJCd40E+xsCbq8yeCYOP2UkDeeJbVvdekli3GsjCu8vjE2UYaBjjZugXgIge9lOQ FnMfJfrcQutLgLrm4oz2s2Jt7Km3Bl40IJVYeFGdrKBaIXhCXKsbESfOdudRGRTb jPNf7s7Ofce8b3DQcT/sr8II49CZ0ekhEsExTfGdQKTz+2tghxGolY7VOZ8Nvd78 fM4SHicN/JREMcLTES0VNR+qPQLoFX1qtIXWQUt6OvxP1EoMandRahaGv+OYJ2Cm lWcmiZWJIDNhQukgnFn2wSd2pkn+Bqj5S6oUhBdcjvVBvt2vCCJtHfZenCLJvJLq k7nPvofvxA7oec9kDRcwJz+Np29DT7MR8gcn0kElF/Biq1F/wlKNuXyX9Sexm821 XQWEWUGFOtirK9BtxDI8R1uIpKWvLm66mnoXDWSb9kTZrkZHc2sa5j7ipPfOtWkr GAPfGrn2o6ckg7M5SKlRo87RdjDzyFxLXn5vqkmwMM8ntRTq8nc7JpJSxX96wVJm v5+HXwRwB5iT0w== =/aBz -----END PGP SIGNATURE----- Merge tag 'kcsan.2022.12.02a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull KCSAN updates from Paul McKenney: - Add instrumentation for memcpy(), memset(), and memmove() for Clang v16+'s new function names that are used when the -fsanitize=thread argument is given - Fix objtool warnings from KCSAN's volatile instrumentation, and typos in a pair of Kconfig options' help clauses * tag 'kcsan.2022.12.02a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: kcsan: Fix trivial typo in Kconfig help comments objtool, kcsan: Add volatile read/write instrumentation to whitelist kcsan: Instrument memcpy/memset/memmove with newer Clang |
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Linus Torvalds
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1fab45ab6e |
RCU pull request for v6.2
This pull request contains the following branches: doc.2022.10.20a: Documentation updates. This is the second in a series from an ongoing review of the RCU documentation. fixes.2022.10.21a: Miscellaneous fixes. lazy.2022.11.30a: Introduces a default-off Kconfig option that depends on RCU_NOCB_CPU that, on CPUs mentioned in the nohz_full or rcu_nocbs boot-argument CPU lists, causes call_rcu() to introduce delays. These delays result in significant power savings on nearly idle Android and ChromeOS systems. These savings range from a few percent to more than ten percent. This series also includes several commits that change call_rcu() to a new call_rcu_hurry() function that avoids these delays in a few cases, for example, where timely wakeups are required. Several of these are outside of RCU and thus have acks and reviews from the relevant maintainers. srcunmisafe.2022.11.09a: Creates an srcu_read_lock_nmisafe() and an srcu_read_unlock_nmisafe() for architectures that support NMIs, but which do not provide NMI-safe this_cpu_inc(). These NMI-safe SRCU functions are required by the upcoming lockless printk() work by John Ogness et al. That printk() series depends on these commits, so if you pull the printk() series before this one, you will have already pulled in this branch, plus two more SRCU commits: |
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Petr Mladek
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6b2b0d839a | Merge branch 'rework/console-list-lock' into for-linus | ||
Heiko Carstens
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706f2ada82 |
s390/vx: add vx-insn.h wrapper include file
The vector instruction macros can also be used in inline assemblies. For this the magic asm(".include \"asm/vx-insn.h\"\n"); must be added to C files in order to avoid that the pre-processor eliminates the __ASSEMBLY__ guarded macros. This however comes with the problem that changes to asm/vx-insn.h do not cause a recompile of C files which have only this magic statement instead of a proper include statement. This can be observed with the arch/s390/kernel/fpu.c file. In order to fix this problem and also to avoid that the include must be specified twice, add a wrapper include header file which will do all necessary steps. This way only the vx-insn.h header file needs to be included and changes to the new vx-insn-asm.h header file cause a recompile of all dependent files like it should. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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Linus Torvalds
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bdaa78c6aa |
15 hotfixes. 11 marked cc:stable. Only three or four of the latter
address post-6.0 issues, which is hopefully a sign that things are converging. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCY4pQpQAKCRDdBJ7gKXxA jquxAP9Lqif7CGDgdq8uWY2hHS/Ujc3k7Ohgyzs37olnCuU8KwEA6/J7SpjsBgtY OfzvnwxpCTh8Kfzu/oNckIHo/EEiIA8= =o6qT -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2022-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "15 hotfixes, 11 marked cc:stable. Only three or four of the latter address post-6.0 issues, which is hopefully a sign that things are converging" * tag 'mm-hotfixes-stable-2022-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: revert "kbuild: fix -Wimplicit-function-declaration in license_is_gpl_compatible" Kconfig.debug: provide a little extra FRAME_WARN leeway when KASAN is enabled drm/amdgpu: temporarily disable broken Clang builds due to blown stack-frame mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths mm/khugepaged: fix GUP-fast interaction by sending IPI mm/khugepaged: take the right locks for page table retraction mm: migrate: fix THP's mapcount on isolation mm: introduce arch_has_hw_nonleaf_pmd_young() mm: add dummy pmd_young() for architectures not having it mm/damon/sysfs: fix wrong empty schemes assumption under online tuning in damon_sysfs_set_schemes() tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep" nilfs2: fix NULL pointer dereference in nilfs_palloc_commit_free_entry() hugetlb: don't delete vma_lock in hugetlb MADV_DONTNEED processing madvise: use zap_page_range_single for madvise dontneed mm: replace VM_WARN_ON to pr_warn if the node is offline with __GFP_THISNODE |
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Stephen Boyd
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c4db2d3b70 |
debugobjects: Print object pointer in debug_print_object()
Delayed kobject debugging (CONFIG_DEBUG_KOBJECT_RELEASE) prints the kobject pointer that's being released in kobject_release() before scheduling a randomly delayed work to do the actual release work. If the caller of kobject_put() frees the kobject upon return then this will typically emit a debugobject warning about freeing an active timer. Usually the release function is the function that does the kfree() of the struct containing the kobject. For example the following print is seen kobject: 'queue' (ffff888114236190): kobject_release, parent 0000000000000000 (delayed 1000) ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: kobject_delayed_cleanup+0x0/0x390 but the kobject printk cannot be matched with the debug object printk because it could be any number of kobjects that was released around that time. The random delay for the work doesn't help either. Print the address of the object being tracked to help to figure out which kobject is the problem here. Note that this does not use %px here to match the other %p usage in debugobject debugging. Due to %p usage it is required to disable pointer hashing to correlate the two pointer printks. Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220519202201.2348343-1-swboyd@chromium.org |
||
Steven Rostedt (Google)
|
a4412fdd49 |
error-injection: Add prompt for function error injection
The config to be able to inject error codes into any function annotated
with ALLOW_ERROR_INJECTION() is enabled when FUNCTION_ERROR_INJECTION is
enabled. But unfortunately, this is always enabled on x86 when KPROBES
is enabled, and there's no way to turn it off.
As kprobes is useful for observability of the kernel, it is useful to
have it enabled in production environments. But error injection should
be avoided. Add a prompt to the config to allow it to be disabled even
when kprobes is enabled, and get rid of the "def_bool y".
This is a kernel debug feature (it's in Kconfig.debug), and should have
never been something enabled by default.
Cc: stable@vger.kernel.org
Fixes:
|
||
Vlastimil Babka
|
dc19745ad0 |
Merge branch 'slub-tiny-v1r6' into slab/for-next
Merge my series [1] to deprecate the SLOB allocator. - Renames CONFIG_SLOB to CONFIG_SLOB_DEPRECATED with deprecation notice. - The recommended replacement is CONFIG_SLUB, optionally with the new CONFIG_SLUB_TINY tweaks for systems with 16MB or less RAM. - Use cases that stopped working with CONFIG_SLUB_TINY instead of SLOB should be reported to linux-mm@kvack.org and slab maintainers, otherwise SLOB will be removed in few cycles. [1] https://lore.kernel.org/all/20221121171202.22080-1-vbabka@suse.cz/ |
||
Feng Tang
|
6cd6d33ca4 |
mm/slub, kunit: Add a test case for kmalloc redzone check
kmalloc redzone check for slub has been merged, and it's better to add
a kunit case for it, which is inspired by a real-world case as described
in commit
|
||
Lee Jones
|
152fe65f30 |
Kconfig.debug: provide a little extra FRAME_WARN leeway when KASAN is enabled
When enabled, KASAN enlarges function's stack-frames. Pushing quite a few over the current threshold. This can mainly be seen on 32-bit architectures where the present limit (when !GCC) is a lowly 1024-Bytes. Link: https://lkml.kernel.org/r/20221125120750.3537134-3-lee@kernel.org Signed-off-by: Lee Jones <lee@kernel.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@gmail.com> Cc: Harry Wentland <harry.wentland@amd.com> Cc: Leo Li <sunpeng.li@amd.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Tom Rix <trix@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Feng Tang
|
4d9dd4b0ce |
mm/slub, kunit: add SLAB_SKIP_KFENCE flag for cache creation
When kfence is enabled, the buffer allocated from the test case could be from a kfence pool, and the operation could be also caught and reported by kfence first, causing the case to fail. With default kfence setting, this is very difficult to be triggered. By changing CONFIG_KFENCE_NUM_OBJECTS from 255 to 16383, and CONFIG_KFENCE_SAMPLE_INTERVAL from 100 to 5, the allocation from kfence did hit 7 times in different slub_kunit cases out of 900 times of boot test. To avoid this, initially we tried is_kfence_address() to check this and repeated allocation till finding a non-kfence address. Vlastimil Babka suggested SLAB_SKIP_KFENCE flag could be used to achieve this, and better add a wrapper function for simplifying cache creation. Signed-off-by: Feng Tang <feng.tang@intel.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
Joel Fernandes (Google)
|
343a72e5e3 |
percpu-refcount: Use call_rcu_hurry() for atomic switch
Earlier commits in this series allow battery-powered systems to build their kernels with the default-disabled CONFIG_RCU_LAZY=y Kconfig option. This Kconfig option causes call_rcu() to delay its callbacks in order to batch callbacks. This means that a given RCU grace period covers more callbacks, thus reducing the number of grace periods, in turn reducing the amount of energy consumed, which increases battery lifetime which can be a very good thing. This is not a subtle effect: In some important use cases, the battery lifetime is increased by more than 10%. This CONFIG_RCU_LAZY=y option is available only for CPUs that offload callbacks, for example, CPUs mentioned in the rcu_nocbs kernel boot parameter passed to kernels built with CONFIG_RCU_NOCB_CPU=y. Delaying callbacks is normally not a problem because most callbacks do nothing but free memory. If the system is short on memory, a shrinker will kick all currently queued lazy callbacks out of their laziness, thus freeing their memory in short order. Similarly, the rcu_barrier() function, which blocks until all currently queued callbacks are invoked, will also kick lazy callbacks, thus enabling rcu_barrier() to complete in a timely manner. However, there are some cases where laziness is not a good option. For example, synchronize_rcu() invokes call_rcu(), and blocks until the newly queued callback is invoked. It would not be a good for synchronize_rcu() to block for ten seconds, even on an idle system. Therefore, synchronize_rcu() invokes call_rcu_hurry() instead of call_rcu(). The arrival of a non-lazy call_rcu_hurry() callback on a given CPU kicks any lazy callbacks that might be already queued on that CPU. After all, if there is going to be a grace period, all callbacks might as well get full benefit from it. Yes, this could be done the other way around by creating a call_rcu_lazy(), but earlier experience with this approach and feedback at the 2022 Linux Plumbers Conference shifted the approach to call_rcu() being lazy with call_rcu_hurry() for the few places where laziness is inappropriate. And another call_rcu() instance that cannot be lazy is the one on the percpu refcounter's "per-CPU to atomic switch" code path, which uses RCU when switching to atomic mode. The enqueued callback wakes up waiters waiting in the percpu_ref_switch_waitq. Allowing this callback to be lazy would result in unacceptable slowdowns for users of per-CPU refcounts, such as blk_pre_runtime_suspend(). Therefore, make __percpu_ref_switch_to_atomic() use call_rcu_hurry() in order to revert to the old behavior. [ paulmck: Apply s/call_rcu_flush/call_rcu_hurry/ feedback from Tejun Heo. ] Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Dennis Zhou <dennis@kernel.org> Cc: Christoph Lameter <cl@linux.com> Cc: <linux-mm@kvack.org> |
||
Vlastimil Babka
|
e240e53ae0 |
mm, slub: add CONFIG_SLUB_TINY
For tiny systems that have used SLOB until now, SLUB might be impractical due to its higher memory usage. To help with that, introduce an option CONFIG_SLUB_TINY that modifies SLUB to use less memory. This is done by sacrificing scalability, security and debugging features, therefore not recommended for any system with more than 16MB RAM. This commit introduces the option and uses it to set other related options in a way that reduces memory usage. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Acked-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Christoph Lameter <cl@linux.com> |
||
Linus Torvalds
|
db3182484f |
Char/Misc driver fixes for 6.1-rc7
Here are some small driver fixes for 6.1-rc7, they include:
- build warning fix for the vdso when using new versions of grep
- iio driver fixes for reported issues
- small nvmem driver fixes
- fpga Kconfig fix
- interconnect dt binding fix
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small driver fixes for 6.1-rc7, they include:
- build warning fix for the vdso when using new versions of grep
- iio driver fixes for reported issues
- small nvmem driver fixes
- fpga Kconfig fix
- interconnect dt binding fix
All of these have been in linux-next with no reported issues"
* tag 'char-misc-6.1-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
lib/vdso: use "grep -E" instead of "egrep"
nvmem: lan9662-otp: Change return type of lan9662_otp_wait_flag_clear()
nvmem: rmem: Fix return value check in rmem_read()
fpga: m10bmc-sec: Fix kconfig dependencies
dt-bindings: iio: adc: Remove the property "aspeed,trim-data-valid"
iio: adc: aspeed: Remove the trim valid dts property.
iio: core: Fix entry not deleted when iio_register_sw_trigger_type() fails
iio: accel: bma400: Fix memory leak in bma400_get_steps_reg()
iio: light: rpr0521: add missing Kconfig dependencies
iio: health:
|
||
Greg Kroah-Hartman
|
8ac3b5cd3e |
lib/vdso: use "grep -E" instead of "egrep"
The latest version of grep claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E fix this up by moving the vdso Makefile to use "grep -E" instead. Cc: Andy Lutomirski <luto@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20220920170633.3133829-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
Li Hua
|
de3db3f883 |
test_kprobes: fix implicit declaration error of test_kprobes
If KPROBES_SANITY_TEST and ARCH_CORRECT_STACKTRACE_ON_KRETPROBE is enabled, but
STACKTRACE is not set. Build failed as below:
lib/test_kprobes.c: In function `stacktrace_return_handler':
lib/test_kprobes.c:228:8: error: implicit declaration of function `stack_trace_save'; did you mean `stacktrace_driver'? [-Werror=implicit-function-declaration]
ret = stack_trace_save(stack_buf, STACK_BUF_SIZE, 0);
^~~~~~~~~~~~~~~~
stacktrace_driver
cc1: all warnings being treated as errors
scripts/Makefile.build:250: recipe for target 'lib/test_kprobes.o' failed
make[2]: *** [lib/test_kprobes.o] Error 1
To fix this error, Select STACKTRACE if ARCH_CORRECT_STACKTRACE_ON_KRETPROBE is enabled.
Link: https://lkml.kernel.org/r/20221121030620.63181-1-hucool.lihua@huawei.com
Fixes:
|
||
Qi Zheng
|
ea4452de2a |
mm: fix unexpected changes to {failslab|fail_page_alloc}.attr
When we specify __GFP_NOWARN, we only expect that no warnings will be
issued for current caller. But in the __should_failslab() and
__should_fail_alloc_page(), the local GFP flags alter the global
{failslab|fail_page_alloc}.attr, which is persistent and shared by all
tasks. This is not what we expected, let's fix it.
[akpm@linux-foundation.org: unexport should_fail_ex()]
Link: https://lkml.kernel.org/r/20221118100011.2634-1-zhengqi.arch@bytedance.com
Fixes:
|
||
Jason A. Donenfeld
|
898f1e5c37 |
vsprintf: initialize siphash key using notifier
Rather than polling every second, use the new notifier to do this at exactly the right moment. Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
Jason A. Donenfeld
|
0445d1bae1 |
lib: assume char is unsigned
Now that we use -funsigned-char, there's no need for this kind of ifdef. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
Jason A. Donenfeld
|
e8a533cbeb |
treewide: use get_random_u32_inclusive() when possible
These cases were done with this Coccinelle: @@ expression H; expression L; @@ - (get_random_u32_below(H) + L) + get_random_u32_inclusive(L, H + L - 1) @@ expression H; expression L; expression E; @@ get_random_u32_inclusive(L, H - + E - - E ) @@ expression H; expression L; expression E; @@ get_random_u32_inclusive(L, H - - E - + E ) @@ expression H; expression L; expression E; expression F; @@ get_random_u32_inclusive(L, H - - E + F - + E ) @@ expression H; expression L; expression E; expression F; @@ get_random_u32_inclusive(L, H - + E + F - - E ) And then subsequently cleaned up by hand, with several automatic cases rejected if it didn't make sense contextually. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> # for infiniband Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
Jason A. Donenfeld
|
d247aabd39 |
treewide: use get_random_u32_{above,below}() instead of manual loop
These cases were done with this Coccinelle: @@ expression E; identifier I; @@ - do { ... when != I - I = get_random_u32(); ... when != I - } while (I > E); + I = get_random_u32_below(E + 1); @@ expression E; identifier I; @@ - do { ... when != I - I = get_random_u32(); ... when != I - } while (I >= E); + I = get_random_u32_below(E); @@ expression E; identifier I; @@ - do { ... when != I - I = get_random_u32(); ... when != I - } while (I < E); + I = get_random_u32_above(E - 1); @@ expression E; identifier I; @@ - do { ... when != I - I = get_random_u32(); ... when != I - } while (I <= E); + I = get_random_u32_above(E); @@ identifier I; @@ - do { ... when != I - I = get_random_u32(); ... when != I - } while (!I); + I = get_random_u32_above(0); @@ identifier I; @@ - do { ... when != I - I = get_random_u32(); ... when != I - } while (I == 0); + I = get_random_u32_above(0); @@ expression E; @@ - E + 1 + get_random_u32_below(U32_MAX - E) + get_random_u32_above(E) Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
Jason A. Donenfeld
|
8032bf1233 |
treewide: use get_random_u32_below() instead of deprecated function
This is a simple mechanical transformation done by: @@ expression E; @@ - prandom_u32_max + get_random_u32_below (E) Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Darrick J. Wong <djwong@kernel.org> # for xfs Reviewed-by: SeongJae Park <sj@kernel.org> # for damon Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> # for infiniband Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> # for arm Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # for mmc Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
Davidlohr Bueso
|
1156b4418d |
memregion: Add cpu_cache_invalidate_memregion() interface
With CXL security features, and CXL dynamic provisioning, global CPU cache flushing nvdimm requirements are no longer specific to that subsystem, even beyond the scope of security_ops. CXL will need such semantics for features not necessarily limited to persistent memory. The functionality this is enabling is to be able to instantaneously secure erase potentially terabytes of memory at once and the kernel needs to be sure that none of the data from before the erase is still present in the cache. It is also used when unlocking a memory device where speculative reads and firmware accesses could have cached poison from before the device was unlocked. Lastly this facility is used when mapping new devices, or new capacity into an established physical address range. I.e. when the driver switches DeviceA mapping AddressX to DeviceB mapping AddressX then any cached data from DeviceA:AddressX needs to be invalidated. This capability is typically only used once per-boot (for unlock), or once per bare metal provisioning event (secure erase), like when handing off the system to another tenant or decommissioning a device. It may also be used for dynamic CXL region provisioning. Users must first call cpu_cache_has_invalidate_memregion() to know whether this functionality is available on the architecture. On x86 this respects the constraints of when wbinvd() is tolerable. It is already the case that wbinvd() is problematic to allow in VMs due its global performance impact and KVM, for example, has been known to just trap and ignore the call. With confidential computing guest execution of wbinvd() may even trigger an exception. Given guests should not be messing with the bare metal address map via CXL configuration changes cpu_cache_has_invalidate_memregion() returns false in VMs. While this global cache invalidation facility, is exported to modules, since NVDIMM and CXL support can be built as a module, it is not for general use. The intent is that this facility is not available outside of specific "device-memory" use cases. To make that expectation as clear as possible the API is scoped to a new "DEVMEM" module namespace that only the NVDIMM and CXL subsystems are expected to import. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Tested-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Davidlohr Bueso <dave@stgolabs.net> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Co-developed-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
Liam Howlett
|
7dc5ba6254 |
maple_tree: don't set a new maximum on the node when not reusing nodes
In RCU mode, the node limits were being updated to the last pivot which may not be correct and would cause the metadata to be set when it shouldn't. Fix this by not setting a new limit in this case. Link: https://lkml.kernel.org/r/20221107163857.867377-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Liam Howlett
|
9bbba56334 |
maple_tree: fix depth tracking in maple_state
It is possible to confuse the depth tracking in the maple state by searching the same node for values. Fix the depth tracking by moving where the depth is incremented closer to where the node changes level. Also change the initial depth setting when using the root node. Link: https://lkml.kernel.org/r/20221107163814.866612-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Alexander Potapenko
|
83d0edfa04 |
kmsan: make sure PREEMPT_RT is off
As pointed out by Peter Zijlstra, __msan_poison_alloca() does not play well with IRQ code when PREEMPT_RT is on, because in that mode even GFP_ATOMIC allocations cannot be performed. Fixing this would require making stackdepot completely lockless, which is quite challenging and may be excessive for the time being. Instead, make sure KMSAN is incompatible with PREEMPT_RT, like other debug configs are. Link: https://lkml.kernel.org/r/20221102110611.1085175-4-glider@google.com Link: https://lore.kernel.org/lkml/20221025221755.3810809-1-glider@google.com/ Signed-off-by: Alexander Potapenko <glider@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Marco Elver <elver@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Alexander Potapenko
|
ac66998df3 |
Kconfig.debug: ensure early check for KMSAN in CONFIG_KMSAN_WARN
As pointed out by Masahiro Yamada, Kconfig picks up the first default
entry which has true 'if' condition. Hence, the previously added check
for KMSAN was never used, because it followed the checks for 64BIT and
!64BIT.
Put KMSAN check before others to ensure it is always applied.
Link: https://lkml.kernel.org/r/20221102110611.1085175-3-glider@google.com
Link: https://github.com/google/kmsan/issues/89
Link: https://lore.kernel.org/linux-mm/20221024212144.2852069-3-glider@google.com/
Fixes:
|
||
Liam Howlett
|
120b116208 |
maple_tree: reorganize testing to restore module testing
Along the development cycle, the testing code support for module/in-kernel compiles was removed. Restore this functionality by moving any internal API tests to the userspace side, as well as threading tests. Fix the lockdep issues and add a way to reduce memory usage so the tests can complete with KASAN + memleak detection. Make the tests work on 32 bit hosts where possible and detect 32 bit hosts in the radix test suite. [akpm@linux-foundation.org: fix module export] [akpm@linux-foundation.org: fix it some more] [liam.howlett@oracle.com: fix compile warnings on 32bit build in check_find()] Link: https://lkml.kernel.org/r/20221107203816.1260327-1-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20221028180415.3074673-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Liam Howlett
|
9a887877ef |
maple_tree: mas_anode_descend() clang-analyzer cleanup
clang-analyzer reported some Dead Stores in mas_anode_descend(). Upon inspection, there were a few clean ups that would make the code cleaner: The count variable was set from the mt_slots array and then updated but never used again. Just use the array reference directly. Also stop updating the type since it isn't used after the update. Stop setting the gaps pointer to NULL at the start since it is always set before the loop begins. Link: https://lkml.kernel.org/r/20221026151413.4032730-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Liam Howlett
|
c61b3a2b2d |
maple_tree: remove pointer to pointer use in mas_alloc_nodes()
There is a more direct and cleaner way of implementing the same functional code. Remove the confusing and unnecessary use of pointers here. Link: https://lkml.kernel.org/r/20221026151241.4031117-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Suggested-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Linus Torvalds
|
9521c9d6a5 |
Networking fixes for 6.1-rc4, including fixes from bluetooth and
netfilter. Current release - regressions: - net: several zerocopy flags fixes - netfilter: fix possible memory leak in nf_nat_init() - openvswitch: add missing .resv_start_op Previous releases - regressions: - neigh: fix null-ptr-deref in neigh_table_clear() - sched: fix use after free in red_enqueue() - dsa: fall back to default tagger if we can't load the one from DT - bluetooth: fix use-after-free in l2cap_conn_del() Previous releases - always broken: - netfilter: netlink notifier might race to release objects - nfc: fix potential memory leak of skb - bluetooth: fix use-after-free caused by l2cap_reassemble_sdu - bluetooth: use skb_put to set length - eth: tun: fix bugs for oversize packet when napi frags enabled - eth: lan966x: fixes for when MTU is changed - eth: dwmac-loongson: fix invalid mdio_node -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEEg1AjqC77wbdLX2LbKSR5jcyPE6QFAmNjnBISHHBhYmVuaUBy ZWRoYXQuY29tAAoJECkkeY3MjxOkSvwP/RokbplLXVut8xlEzeYP48tFAcM/aUmy iWbz47IZNOXeWfQxP9kzDD9y1gqVJVrEt9bsPMingjArYSgOZYBssXbKeI4Lofeh EzQ8B9dJbxIBMHx5bTRhL9pSYYhUnqPAsQKqm6Bvi2YZ4EmMK0WtnSn1O2egMg6Y eNuFPTdRiO6Zs9vXF4iyYBPj3Wdg7oUGSjyluKF5Wwfk3GFt/a9iAoctk6gIZlDU Tq7pQ9Qs6dk8em8G3qdUalaWuswY/a/jh8QpGvGVaY6ncgSkD4M883UyvR23SOne V4jE/VbPOQpmkzkRkFY27GIMBg1IGXqq4gcB3aw8LL9+G446UJrtvy4OyiOex/Rg yJ9FmHdtFndQLiu7cHgQuUZ5s2B/UwVXLo3MD+KEwJ2bzo6vDp1mQsiUN7lttdrc AYgxyn0tH0tFADHGZZ0NspTAlgfmBsytXTGWdEfMUkMYDicC62XNnf2akwJlSpQU mJdzc/N23JXxd3dPFv0brDDj9Kl1DC3eUcCbWwDTtdiqQc6BKnnfAQ4+kd8gBUed 5cXYNcuRi5sQ9ZfvGUCdDxi+kzFMvjRvYo45AnPJsoURlZwKI2EEFdcEsw5CF3Co QHWm8r7SFeG26oDgfs7R1o/uQr8Cxk8e7t0Pd3iKaslSrO4i/7cQioFhZF4sdjPr GB6K67t/qvdE =34Ef -----END PGP SIGNATURE----- Merge tag 'net-6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from bluetooth and netfilter. Current release - regressions: - net: several zerocopy flags fixes - netfilter: fix possible memory leak in nf_nat_init() - openvswitch: add missing .resv_start_op Previous releases - regressions: - neigh: fix null-ptr-deref in neigh_table_clear() - sched: fix use after free in red_enqueue() - dsa: fall back to default tagger if we can't load the one from DT - bluetooth: fix use-after-free in l2cap_conn_del() Previous releases - always broken: - netfilter: netlink notifier might race to release objects - nfc: fix potential memory leak of skb - bluetooth: fix use-after-free caused by l2cap_reassemble_sdu - bluetooth: use skb_put to set length - eth: tun: fix bugs for oversize packet when napi frags enabled - eth: lan966x: fixes for when MTU is changed - eth: dwmac-loongson: fix invalid mdio_node" * tag 'net-6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (53 commits) vsock: fix possible infinite sleep in vsock_connectible_wait_data() vsock: remove the unused 'wait' in vsock_connectible_recvmsg() ipv6: fix WARNING in ip6_route_net_exit_late() bridge: Fix flushing of dynamic FDB entries net, neigh: Fix null-ptr-deref in neigh_table_clear() net/smc: Fix possible leaked pernet namespace in smc_init() stmmac: dwmac-loongson: fix invalid mdio_node ibmvnic: Free rwi on reset success net: mdio: fix undefined behavior in bit shift for __mdiobus_register Bluetooth: L2CAP: Fix attempting to access uninitialized memory Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm Bluetooth: L2CAP: Fix accepting connection request for invalid SPSM Bluetooth: hci_conn: Fix not restoring ISO buffer count on disconnect Bluetooth: L2CAP: Fix memory leak in vhci_write Bluetooth: L2CAP: fix use-after-free in l2cap_conn_del() Bluetooth: virtio_bt: Use skb_put to set length Bluetooth: hci_conn: Fix CIS connection dst_type handling Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu netfilter: ipset: enforce documented limit to prevent allocating huge memory isdn: mISDN: netjet: fix wrong check of device registration ... |
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Florian Westphal
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ecaf75ffd5 |
netlink: introduce bigendian integer types
Jakub reported that the addition of the "network_byte_order"
member in struct nla_policy increases size of 32bit platforms.
Instead of scraping the bit from elsewhere Johannes suggested
to add explicit NLA_BE types instead, so do this here.
NLA_POLICY_MAX_BE() macro is removed again, there is no need
for it: NLA_POLICY_MAX(NLA_BE.., ..) will do the right thing.
NLA_BE64 can be added later.
Fixes:
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Andy Shevchenko
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fd070e8ceb |
test_printf: Refactor fwnode_pointer() to make it more readable
Converting fwnode_pointer() to use better swnode API allows to make code more readable. While at it, rename full_name to full_name_third to show exact relation in the hierarchy. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20220824170542.18263-1-andriy.shevchenko@linux.intel.com |
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Linus Torvalds
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3c339dbd13 |
23 hotfixes.
Eight fix pre-6.0 bugs and the remainder address issues which were introduced in the 6.1-rc merge cycle, or address issues which aren't considered sufficiently serious to warrant a -stable backport. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCY1w/LAAKCRDdBJ7gKXxA jovHAQDqY3TGAVQsvCBKdUqkp5nakZ7o7kK+mUGvsZ8Cgp5fwQD/Upsu93RZsTgm oJfYW4W6eSVEKPu7oAY20xVwLvK6iQ0= =z0Fn -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2022-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "Eight fix pre-6.0 bugs and the remainder address issues which were introduced in the 6.1-rc merge cycle, or address issues which aren't considered sufficiently serious to warrant a -stable backport" * tag 'mm-hotfixes-stable-2022-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits) mm: multi-gen LRU: move lru_gen_add_mm() out of IRQ-off region lib: maple_tree: remove unneeded initialization in mtree_range_walk() mmap: fix remap_file_pages() regression mm/shmem: ensure proper fallback if page faults mm/userfaultfd: replace kmap/kmap_atomic() with kmap_local_page() x86: fortify: kmsan: fix KMSAN fortify builds x86: asm: make sure __put_user_size() evaluates pointer once Kconfig.debug: disable CONFIG_FRAME_WARN for KMSAN by default x86/purgatory: disable KMSAN instrumentation mm: kmsan: export kmsan_copy_page_meta() mm: migrate: fix return value if all subpages of THPs are migrated successfully mm/uffd: fix vma check on userfault for wp mm: prep_compound_tail() clear page->private mm,madvise,hugetlb: fix unexpected data loss with MADV_DONTNEED on hugetlbfs mm/page_isolation: fix clang deadcode warning fs/ext4/super.c: remove unused `deprecated_msg' ipc/msg.c: fix percpu_counter use after free memory tier, sysfs: rename attribute "nodes" to "nodelist" MAINTAINERS: git://github.com -> https://github.com for nilfs2 mm/kmemleak: prevent soft lockup in kmemleak_scan()'s object iteration loops ... |
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Tejun Heo
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6ab428604f |
cgroup: Implement DEBUG_CGROUP_REF
It's really difficult to debug when cgroup or css refs leak. Let's add a debug option to force the refcnt function to not be inlined so that they can be kprobed for debugging. Signed-off-by: Tejun Heo <tj@kernel.org> |
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Lukas Bulwahn
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1b9c918318 |
lib: maple_tree: remove unneeded initialization in mtree_range_walk()
Before the do-while loop in mtree_range_walk(), the variables next, min, max need to be initialized. The variables last, prev_min and prev_max are set within the loop body before they are eventually used after exiting the loop body. As it is a do-while loop, the loop body is executed at least once, so the variables last, prev_min and prev_max do not need to be initialized before the loop body. Remove unneeded initialization of last and prev_min. The needless initialization was reported by clang-analyzer as Dead Stores. As the compiler already identifies these assignments as unneeded, it optimizes the assignments away. Hence: No functional change. No change in object code. Link: https://lkml.kernel.org/r/20221026120029.12555-2-lukas.bulwahn@gmail.com Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Alexander Potapenko
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921757bc9b |
Kconfig.debug: disable CONFIG_FRAME_WARN for KMSAN by default
KMSAN adds a lot of instrumentation to the code, which results in increased stack usage (up to 2048 bytes and more in some cases). It's hard to predict how big the stack frames can be, so we disable the warnings for KMSAN instead. Link: https://lkml.kernel.org/r/20221024212144.2852069-3-glider@google.com Link: https://github.com/google/kmsan/issues/89 Signed-off-by: Alexander Potapenko <glider@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Linus Torvalds
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2375886721 |
Including fixes from 802.15.4 (Zigbee et al.).
Current release - regressions: - ipa: fix bugs in the register conversion for IPA v3.1 and v3.5.1 Current release - new code bugs: - mptcp: fix abba deadlock on fastopen - eth: stmmac: rk3588: allow multiple gmac controllers in one system Previous releases - regressions: - ip: rework the fix for dflt addr selection for connected nexthop - net: couple more fixes for misinterpreting bits in struct page after the signature was added Previous releases - always broken: - ipv6: ensure sane device mtu in tunnels - openvswitch: switch from WARN to pr_warn on a user-triggerable path - ethtool: eeprom: fix null-deref on genl_info in dump - ieee802154: more return code fixes for corner cases in dgram_sendmsg - mac802154: fix link-quality-indicator recording - eth: mlx5: fixes for IPsec, PTP timestamps, OvS and conntrack offload - eth: fec: limit register access on i.MX6UL - eth: bcm4908_enet: update TX stats after actual transmission - can: rcar_canfd: improve IRQ handling for RZ/G2L Misc: - genetlink: piggy back on the newly added resv_op_start to enforce more sanity checks on new commands Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmNa2CIACgkQMUZtbf5S IrsEDhAAsqvsIqhnwaDuvzTpdz/l2ZiLyRixue+Z5Q88/LkSYC7SRMjh70TzbYEj ENbB+hzGt9zDYIga1+vtLU13rENiI+3V0Pr5eOK9jVV2KBwQmgj1PatjlLhfQ8aa q9c/dg3YqKFcsLjHpCZC1O3imDEU+Wt1XV+N2tuoOhJ1QVPSemjSVUEgIP+qLTD7 cXd+bWpcEXq/X0jkptElGsCM4RHxuN9MCcQDoGfdyoGEmXDi17BmmJEVu4LWdamg bPlky2uerFBtuUyK3jSvsoTI0VHwcxAr/MSmMxwcRGMr/smy/1UIKfehSJUOXFsr XeN4pfgezqPvl4l7LjC0xx83zg1UffKGhkGuu47MS3A8rS+zSo9CEH993owOb5Ty ZH5ZhBsdS6wchCbM15eqEby2ATYh/pYf8gNEBYfItsj2QuIPoqt8h19yQ4Gu1eX2 1w1RpDJH0SyD02hsmfRWKzjehHNbNM+cQ2+prVazhXuSmhGxTOqWsirv6mThlfm6 IEuG62d0VOYFoRBKxTV27S57QyfT0/+uMyu7UjDX5lieJGXvN6wGH7UlOUDBC5j/ 4GhW8Li4hxskxv292S8nvwANAOY02wWaunVsEtLYwB+7erkPDISUkiUjdxi4Uc7W yfxqbhW70Yd9sDEoKXGRsQ21nl82ZBeUIWPx/xLr+F6PuKdvUHo= =g5TW -----END PGP SIGNATURE----- Merge tag 'net-6.1-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from 802.15.4 (Zigbee et al). Current release - regressions: - ipa: fix bugs in the register conversion for IPA v3.1 and v3.5.1 Current release - new code bugs: - mptcp: fix abba deadlock on fastopen - eth: stmmac: rk3588: allow multiple gmac controllers in one system Previous releases - regressions: - ip: rework the fix for dflt addr selection for connected nexthop - net: couple more fixes for misinterpreting bits in struct page after the signature was added Previous releases - always broken: - ipv6: ensure sane device mtu in tunnels - openvswitch: switch from WARN to pr_warn on a user-triggerable path - ethtool: eeprom: fix null-deref on genl_info in dump - ieee802154: more return code fixes for corner cases in dgram_sendmsg - mac802154: fix link-quality-indicator recording - eth: mlx5: fixes for IPsec, PTP timestamps, OvS and conntrack offload - eth: fec: limit register access on i.MX6UL - eth: bcm4908_enet: update TX stats after actual transmission - can: rcar_canfd: improve IRQ handling for RZ/G2L Misc: - genetlink: piggy back on the newly added resv_op_start to enforce more sanity checks on new commands" * tag 'net-6.1-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (57 commits) net: enetc: survive memory pressure without crashing kcm: do not sense pfmemalloc status in kcm_sendpage() net: do not sense pfmemalloc status in skb_append_pagefrags() net/mlx5e: Fix macsec sci endianness at rx sa update net/mlx5e: Fix wrong bitwise comparison usage in macsec_fs_rx_add_rule function net/mlx5e: Fix macsec rx security association (SA) update/delete net/mlx5e: Fix macsec coverity issue at rx sa update net/mlx5: Fix crash during sync firmware reset net/mlx5: Update fw fatal reporter state on PCI handlers successful recover net/mlx5e: TC, Fix cloned flow attr instance dests are not zeroed net/mlx5e: TC, Reject forwarding from internal port to internal port net/mlx5: Fix possible use-after-free in async command interface net/mlx5: ASO, Create the ASO SQ with the correct timestamp format net/mlx5e: Update restore chain id for slow path packets net/mlx5e: Extend SKB room check to include PTP-SQ net/mlx5: DR, Fix matcher disconnect error flow net/mlx5: Wait for firmware to enable CRS before pci_restore_state net/mlx5e: Do not increment ESN when updating IPsec ESN state netdevsim: remove dir in nsim_dev_debugfs_init() when creating ports dir failed netdevsim: fix memory leak in nsim_drv_probe() when nsim_dev_resources_register() failed ... |