- Dec 12, 2021
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull io_uring fixes from Jens Axboe: "A few fixes that are all bound for stable: - Two syzbot reports for io-wq that turned out to be separate fixes, but ultimately very closely related - io_uring task_work running on cancelations" * tag 'io_uring-5.16-2021-12-10' of git://git.kernel.dk/linux-block: io-wq: check for wq exit after adding new worker task_work io_uring: ensure task_work gets run as part of cancelations io-wq: remove spurious bit clear on task_work addition
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Two more I2C driver bugfixes" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: mpc: Use atomic read and fix break condition i2c: virtio: fix completion handling
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk driver fixes from Stephen Boyd: - Fix qcom mux logic to look at the proper parent table member. Luckily this clk type isn't very common. - Don't kill clks on qcom systems that use Trion PLLs that are enabled out of the bootloader. We will simply skip programming the PLL rate if it's already done. - Use the proper clk_ops for the qcom sm6125 ICE clks. - Use module_platform_driver() in i.MX as it can be a module. - Fix a UAF in the versatile clk driver on an error path. * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: versatile: clk-icst: use after free on error path clk: qcom: sm6125-gcc: Swap ops of ice and apps on sdcc1 clk: imx: use module_platform_driver clk: qcom: clk-alpha-pll: Don't reconfigure running Trion clk: qcom: regmap-mux: fix parent clock lookup
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds authored
Pull devicetree fixes from Rob Herring: - Revert schema checks on %.dtb targets. This was problematic for some external build tools. - A few DT binding example fixes - Add back dropped 'enet-phy-lane-no-swap' Ethernet PHY property - Drop erroneous if/then schema in nxp,imx7-mipi-csi2 - Add a quirk to fix some interrupt controllers use of 'interrupt-map' * tag 'devicetree-fixes-for-5.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: Revert "kbuild: Enable DT schema checks for %.dtb targets" dt-bindings: bq25980: Fixup the example dt-bindings: input: gpio-keys: Fix interrupts in example dt-bindings: net: Reintroduce PHY no lane swap binding dt-bindings: media: nxp,imx7-mipi-csi2: Drop bad if/then schema of/irq: Add a quirk for controllers with their own definition of interrupt-map dt-bindings: iio: adc: exynos-adc: Fix node name in example
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Linus Torvalds authored
Merge misc fixes from Andrew Morton: "21 patches. Subsystems affected by this patch series: MAINTAINERS, mailmap, and mm (mlock, pagecache, damon, slub, memcg, hugetlb, and pagecache)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (21 commits) mm: bdi: initialize bdi_min_ratio when bdi is unregistered hugetlbfs: fix issue of preallocation of gigantic pages can't work mm/memcg: relocate mod_objcg_mlstate(), get_obj_stock() and put_obj_stock() mm/slub: fix endianness bug for alloc/free_traces attributes selftests/damon: split test cases selftests/damon: test debugfs file reads/writes with huge count selftests/damon: test wrong DAMOS condition ranges input selftests/damon: test DAMON enabling with empty target_ids case selftests/damon: skip test if DAMON is running mm/damon/vaddr-test: remove unnecessary variables mm/damon/vaddr-test: split a test function having >1024 bytes frame size mm/damon/vaddr: remove an unnecessary warning message mm/damon/core: remove unnecessary error messages mm/damon/dbgfs: remove an unnecessary error message mm/damon/core: use better timer mechanisms selection threshold mm/damon/core: fix fake load reports due to uninterruptible sleeps timers: implement usleep_idle_range() filemap: remove PageHWPoison check from next_uptodate_page() mailmap: update email address for Guo Ren MAINTAINERS: update kdump maintainers ...
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- Dec 11, 2021
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linuxLinus Torvalds authored
Pull btrfs fixes from David Sterba: "A few more regression fixes and stable patches, mostly one-liners. Regression fixes: - fix pointer/ERR_PTR mismatch returned from memdup_user - reset dedicated zoned mode relocation block group to avoid using it and filling it without any recourse Fixes: - handle a case to FITRIM range (also to make fstests/generic/260 work) - fix warning when extent buffer state and pages get out of sync after an IO error - fix transaction abort when syncing due to missing mapping error set on metadata inode after inlining a compressed file - fix transaction abort due to tree-log and zoned mode interacting in an unexpected way - fix memory leak of additional extent data when qgroup reservation fails - do proper handling of slot search call when deleting root refs" * tag 'for-5.16-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: replace the BUG_ON in btrfs_del_root_ref with proper error handling btrfs: zoned: clear data relocation bg on zone finish btrfs: free exchange changeset on failures btrfs: fix re-dirty process of tree-log nodes btrfs: call mapping_set_error() on btree inode with a write error btrfs: clear extent buffer uptodate when we fail to write it btrfs: fail if fstrim_range->start == U64_MAX btrfs: fix error pointer dereference in btrfs_ioctl_rm_dev_v2()
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git://git.samba.org/sfrench/cifs-2.6Linus Torvalds authored
Pull cifs fixes from Steve French: "Two cifs/smb3 fixes - one for stable, the other fixes a recently reported NTLMSSP auth problem" * tag '5.16-rc4-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6: cifs: fix ntlmssp auth when there is no key exchange cifs: Fix crash on unload of cifs_arc4.ko
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
Pull nfsd fixes from Bruce Fields: "Fix a race on startup and another in the delegation code. The latter has been around for years, but I suspect recent changes may have widened the race window a little, so I'd like to go ahead and get it in" * tag 'nfsd-5.16-2' of git://linux-nfs.org/~bfields/linux: nfsd: fix use-after-free due to delegation race nfsd: Fix nsfd startup race (again)
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Manjong Lee authored
Initialize min_ratio if it is set during bdi unregistration. This can prevent problems that may occur a when bdi is removed without resetting min_ratio. For example. 1) insert external sdcard 2) set external sdcard's min_ratio 70 3) remove external sdcard without setting min_ratio 0 4) insert external sdcard 5) set external sdcard's min_ratio 70 << error occur(can't set) Because when an sdcard is removed, the present bdi_min_ratio value will remain. Currently, the only way to reset bdi_min_ratio is to reboot. [akpm@linux-foundation.org: tweak comment and coding style] Link: https://lkml.kernel.org/r/20211021161942.5983-1-mj0123.lee@samsung.com Signed-off-by:
Manjong Lee <mj0123.lee@samsung.com> Acked-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Changheun Lee <nanich.lee@samsung.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: <seunghwan.hyun@samsung.com> Cc: <sookwan7.kim@samsung.com> Cc: <yt0928.kim@samsung.com> Cc: <junho89.kim@samsung.com> Cc: <jisoo2146.oh@samsung.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Zhenguo Yao authored
Preallocation of gigantic pages can't work bacause of commit b5389086 ("hugetlbfs: extend the definition of hugepages parameter to support node allocation"). When nid is NUMA_NO_NODE(-1), alloc_bootmem_huge_page will always return without doing allocation. Fix this by adding more check. Link: https://lkml.kernel.org/r/20211129133803.15653-1-yaozhenguo1@gmail.com Fixes: b5389086 ("hugetlbfs: extend the definition of hugepages parameter to support node allocation") Signed-off-by:
Zhenguo Yao <yaozhenguo1@gmail.com> Reviewed-by:
Mike Kravetz <mike.kravetz@oracle.com> Tested-by:
Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by:
Muchun Song <songmuchun@bytedance.com> Reviewed-by:
Baolin Wang <baolin.wang@linux.alibaba.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Waiman Long authored
All the calls to mod_objcg_mlstate(), get_obj_stock() and put_obj_stock() are done by functions defined within the same "#ifdef CONFIG_MEMCG_KMEM" compilation block. When CONFIG_MEMCG_KMEM isn't defined, the following compilation warnings will be issued [1] and [2]. mm/memcontrol.c:785:20: warning: unused function 'mod_objcg_mlstate' mm/memcontrol.c:2113:33: warning: unused function 'get_obj_stock' Fix these warning by moving those functions to under the same CONFIG_MEMCG_KMEM compilation block. There is no functional change. [1] https://lore.kernel.org/lkml/202111272014.WOYNLUV6-lkp@intel.com/ [2] https://lore.kernel.org/lkml/202111280551.LXsWYt1T-lkp@intel.com/ Link: https://lkml.kernel.org/r/20211129161140.306488-1-longman@redhat.com Fixes: 55927114 ("mm/memcg: optimize user context object stock access") Fixes: 68ac5b3c ("mm/memcg: cache vmstat data in percpu memcg_stock_pcp") Signed-off-by:
Waiman Long <longman@redhat.com> Reported-by:
kernel test robot <lkp@intel.com> Reviewed-by:
Shakeel Butt <shakeelb@google.com> Acked-by:
Roman Gushchin <guro@fb.com> Reviewed-by:
Muchun Song <songmuchun@bytedance.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Gerald Schaefer authored
On big-endian s390, the alloc/free_traces attributes produce endless output, because of always 0 idx in slab_debugfs_show(). idx is de-referenced from *v, which points to a loff_t value, with unsigned int idx = *(unsigned int *)v; This will only give the upper 32 bits on big-endian, which remain 0. Instead of only fixing this de-reference, during discussion it seemed more appropriate to change the seq_ops so that they use an explicit iterator in private loc_track struct. This patch adds idx to loc_track, which will also fix the endianness bug. Link: https://lore.kernel.org/r/20211117193932.4049412-1-gerald.schaefer@linux.ibm.com Link: https://lkml.kernel.org/r/20211126171848.17534-1-gerald.schaefer@linux.ibm.com Fixes: 64dd6849 ("mm: slub: move sysfs slab alloc/free interfaces to debugfs") Signed-off-by:
Gerald Schaefer <gerald.schaefer@linux.ibm.com> Reported-by:
Steffen Maier <maier@linux.ibm.com> Acked-by:
Vlastimil Babka <vbabka@suse.cz> Cc: Faiyaz Mohammed <faiyazm@codeaurora.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
Currently, the single test program, debugfs.sh, contains all test cases for DAMON. When one of the cases fails, finding which case is failed from the test log is not so easy, and all remaining tests will be skipped. To improve the situation, this commit splits the single program into small test programs having their own names. Link: https://lkml.kernel.org/r/20211201150440.1088-12-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
DAMON debugfs interface users were able to trigger warning by writing some files with arbitrarily large 'count' parameter. The issue is fixed with commit db7a347b ("mm/damon/dbgfs: use '__GFP_NOWARN' for user-specified size buffer allocation"). This commit adds a test case for the issue in DAMON selftests to avoid future regressions. Link: https://lkml.kernel.org/r/20211201150440.1088-11-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
A patch titled "mm/damon/schemes: add the validity judgment of thresholds"[1] makes DAMON debugfs interface to validate DAMON scheme inputs. This commit adds a test case for the validation logic in DAMON selftests. [1] https://lore.kernel.org/linux-mm/d78360e52158d786fcbf20bc62c96785742e76d3.1637239568.git.xhao@linux.alibaba.com/ Link: https://lkml.kernel.org/r/20211201150440.1088-10-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
DAMON debugfs didn't check empty targets when starting monitoring, and the issue is fixed with commit b5ca3e83 ("mm/damon/dbgfs: add adaptive_targets list check before enable monitor_on"). To avoid future regression, this commit adds a test case for that in DAMON selftests. Link: https://lkml.kernel.org/r/20211201150440.1088-9-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
Testing the DAMON debugfs files while DAMON is running makes no sense, as any write to the debugfs files will fail. This commit makes the test be skipped in this case. Link: https://lkml.kernel.org/r/20211201150440.1088-8-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
A couple of test functions in DAMON virtual address space monitoring primitives implementation has unnecessary damon_ctx variables. This commit removes those. Link: https://lkml.kernel.org/r/20211201150440.1088-7-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
On some configuration[1], 'damon_test_split_evenly()' kunit test function has >1024 bytes frame size, so below build warning is triggered: CC mm/damon/vaddr.o In file included from mm/damon/vaddr.c:672: mm/damon/vaddr-test.h: In function 'damon_test_split_evenly': mm/damon/vaddr-test.h:309:1: warning: the frame size of 1064 bytes is larger than 1024 bytes [-Wframe-larger-than=] 309 | } | ^ This commit fixes the warning by separating the common logic in the function. [1] https://lore.kernel.org/linux-mm/202111182146.OV3C4uGr-lkp@intel.com/ Link: https://lkml.kernel.org/r/20211201150440.1088-6-sj@kernel.org Fixes: 17ccae8b ("mm/damon: add kunit tests") Signed-off-by:
SeongJae Park <sj@kernel.org> Reported-by:
kernel test robot <lkp@intel.com> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
The DAMON virtual address space monitoring primitive prints a warning message for wrong DAMOS action. However, it is not essential as the code returns appropriate failure in the case. This commit removes the message to make the log clean. Link: https://lkml.kernel.org/r/20211201150440.1088-5-sj@kernel.org Fixes: 6dea8add ("mm/damon/vaddr: support DAMON-based Operation Schemes") Signed-off-by:
SeongJae Park <sj@kernel.org> Reviewed-by:
Muchun Song <songmuchun@bytedance.com> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
DAMON core prints error messages when damon_target object creation is failed or wrong monitoring attributes are given. Because appropriate error code is returned for each case, the messages are not essential. Also, because the code path can be triggered with user-specified input, this could result in kernel log mistakenly being messy. To avoid the case, this commit removes the messages. Link: https://lkml.kernel.org/r/20211201150440.1088-4-sj@kernel.org Fixes: 4bc05954 ("mm/damon: implement a debugfs-based user space interface") Fixes: b9a6ac4e ("mm/damon: adaptively adjust regions") Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: kernel test robot <lkp@intel.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
When wrong scheme action is requested via the debugfs interface, DAMON prints an error message. Because the function returns error code, this is not really needed. Because the code path is triggered by the user specified input, this can result in kernel log mistakenly being messy. To avoid the case, this commit removes the message. Link: https://lkml.kernel.org/r/20211201150440.1088-3-sj@kernel.org Fixes: af122dd8 ("mm/damon/dbgfs: support DAMON-based Operation Schemes") Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
Patch series "mm/damon: Trivial fixups and improvements". This patchset contains trivial fixups and improvements for DAMON and its kunit/kselftest tests. This patch (of 11): DAMON is using hrtimer if requested sleep time is <=100ms, while the suggested threshold[1] is <=20ms. This commit applies the threshold. [1] Documentation/timers/timers-howto.rst Link: https://lkml.kernel.org/r/20211201150440.1088-2-sj@kernel.org Fixes: ee801b7d ("mm/damon/schemes: activate schemes based on a watermarks mechanism") Signed-off-by:
SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
Because DAMON sleeps in uninterruptible mode, /proc/loadavg reports fake load while DAMON is turned on, though it is doing nothing. This can confuse users[1]. To avoid the case, this commit makes DAMON sleeps in idle mode. [1] https://lore.kernel.org/all/11868371.O9o76ZdvQC@natalenko.name/ Link: https://lkml.kernel.org/r/20211126145015.15862-3-sj@kernel.org Fixes: 2224d848 ("mm: introduce Data Access MONitor (DAMON)") Reported-by:
Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by:
SeongJae Park <sj@kernel.org> Tested-by:
Oleksandr Natalenko <oleksandr@natalenko.name> Cc: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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SeongJae Park authored
Patch series "mm/damon: Fix fake /proc/loadavg reports", v3. This patchset fixes DAMON's fake load report issue. The first patch makes yet another variant of usleep_range() for this fix, and the second patch fixes the issue of DAMON by making it using the newly introduced function. This patch (of 2): Some kernel threads such as DAMON could need to repeatedly sleep in micro seconds level. Because usleep_range() sleeps in uninterruptible state, however, such threads would make /proc/loadavg reports fake load. To help such cases, this commit implements a variant of usleep_range() called usleep_idle_range(). It is same to usleep_range() but sets the state of the current task as TASK_IDLE while sleeping. Link: https://lkml.kernel.org/r/20211126145015.15862-1-sj@kernel.org Link: https://lkml.kernel.org/r/20211126145015.15862-2-sj@kernel.org Signed-off-by:
SeongJae Park <sj@kernel.org> Suggested-by:
Andrew Morton <akpm@linux-foundation.org> Reviewed-by:
Thomas Gleixner <tglx@linutronix.de> Tested-by:
Oleksandr Natalenko <oleksandr@natalenko.name> Cc: John Stultz <john.stultz@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Matthew Wilcox (Oracle) authored
Pages are individually marked as suffering from hardware poisoning. Checking that the head page is not hardware poisoned doesn't make sense; we might be after a subpage. We check each page individually before we use it, so this was an optimisation gone wrong. It will cause us to fall back to the slow path when there was no need to do that Link: https://lkml.kernel.org/r/20211120174429.2596303-1-willy@infradead.org Signed-off-by:
Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by:
Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Yang Shi <shy828301@gmail.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Guo Ren authored
The ren_guo@c-sky.com would be deprecated and use guoren@kernel.org as the main email address. Link: https://lkml.kernel.org/r/20211123022741.545541-1-guoren@kernel.org Signed-off-by:
Guo Ren <guoren@linux.alibaba.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Dave Young authored
Remove myself from kdump maintainers as I have no enough time to maintain it now. But I can review patches on demand though. Link: https://lkml.kernel.org/r/YZyKilzKFsWJYdgn@dhcp-128-65.nay.redhat.com Signed-off-by:
Dave Young <dyoung@redhat.com> Acked-by:
Baoquan He <bhe@redhat.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Drew DeVault authored
This limit has not been updated since 2008, when it was increased to 64 KiB at the request of GnuPG. Until recently, the main use-cases for this feature were (1) preventing sensitive memory from being swapped, as in GnuPG's use-case; and (2) real-time use-cases. In the first case, little memory is called for, and in the second case, the user is generally in a position to increase it if they need more. The introduction of IOURING_REGISTER_BUFFERS adds a third use-case: preparing fixed buffers for high-performance I/O. This use-case will take as much of this memory as it can get, but is still limited to 64 KiB by default, which is very little. This increases the limit to 8 MB, which was chosen fairly arbitrarily as a more generous, but still conservative, default value. It is also possible to raise this limit in userspace. This is easily done, for example, in the use-case of a network daemon: systemd, for instance, provides for this via LimitMEMLOCK in the service file; OpenRC via the rc_ulimit variables. However, there is no established userspace facility for configuring this outside of daemons: end-user applications do not presently have access to a convenient means of raising their limits. The buck, as it were, stops with the kernel. It's much easier to address it here than it is to bring it to hundreds of distributions, and it can only realistically be relied upon to be high-enough by end-user software if it is more-or-less ubiquitous. Most distros don't change this particular rlimit from the kernel-supplied default value, so a change here will easily provide that ubiquity. Link: https://lkml.kernel.org/r/20211028080813.15966-1-sir@cmpwn.com Signed-off-by:
Drew DeVault <sir@cmpwn.com> Acked-by:
Jens Axboe <axboe@kernel.dk> Acked-by:
Cyril Hrubis <chrubis@suse.cz> Acked-by:
Johannes Weiner <hannes@cmpxchg.org> Cc: Pavel Begunkov <asml.silence@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Andrew Dona-Couch <andrew@donacou.ch> Cc: Ammar Faizi <ammarfaizi2@gnuweeb.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull thermal control fix from Rafael Wysocki: "Fix the definition of one of the Tiger Lake MMIO registers in the int340x thermal driver (Sumeet Pawnikar)" * tag 'thermal-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: thermal: int340x: Fix VCoRefLow MMIO bit offset for TGL
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI fix from Rafael Wysocki: "Create the output directory for the ACPI tools during build if it has not been present before and prevent the compilation from failing in that case (Chen Yu)" * tag 'acpi-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: tools: Fix compilation when output directory is not present
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fix from Rafael Wysocki: "Fix a kernedoc comment that doesn't match the behavior of the function documented by it" * tag 'pm-5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: runtime: Fix pm_runtime_active() kerneldoc comment
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Linus Torvalds authored
Merge tag 'hwmon-for-v5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: - In the pwm-fan driver, ensure that the internal pwm state matches the state assumed by the pwm code. - Avoid EREMOTEIO errors in sht4 driver - In the nct6775 driver, make it explicit that the register value passed to nct6775_asuswmi_read() is an 8-bit value - Avoid WARNing in dell-smm driver removal after failing to create /proc/i8k - Stop using a plain integer as NULL pointer in corsair-psu driver * tag 'hwmon-for-v5.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (pwm-fan) Ensure the fan going on in .probe() hwmon: (sht4x) Fix EREMOTEIO errors hwmon: (nct6775) mask out bank number in nct6775_wmi_read_value() hwmon: (dell-smm) Fix warning on /proc/i8k creation error hwmon: (corsair-psu) fix plain integer used as NULL pointer
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull tracing fixes from Steven Rostedt: "Tracing, ftrace and tracefs fixes: - Have tracefs honor the gid mount option - Have new files in tracefs inherit the parent ownership - Have direct_ops unregister when it has no more functions - Properly clean up the ops when unregistering multi direct ops - Add a sample module to test the multiple direct ops - Fix memory leak in error path of __create_synth_event()" * tag 'trace-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Fix possible memory leak in __create_synth_event() error path ftrace/samples: Add module to test multi direct modify interface ftrace: Add cleanup to unregister_ftrace_direct_multi ftrace: Use direct_ops hash in unregister_ftrace_direct tracefs: Set all files to the same group ownership as the mount option tracefs: Have new files inherit the ownership of their parent
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linuxLinus Torvalds authored
Pull aio poll fixes from Eric Biggers: "Fix three bugs in aio poll, and one issue with POLLFREE more broadly: - aio poll didn't handle POLLFREE, causing a use-after-free. - aio poll could block while the file is ready. - aio poll called eventfd_signal() when it isn't allowed. - POLLFREE didn't handle multiple exclusive waiters correctly. This has been tested with the libaio test suite, as well as with test programs I wrote that reproduce the first two bugs. I am sending this pull request myself as no one seems to be maintaining this code" * tag 'aio-poll-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: aio: Fix incorrect usage of eventfd_signal_allowed() aio: fix use-after-free due to missing POLLFREE handling aio: keep poll requests on waitqueue until completed signalfd: use wake_up_pollfree() binder: use wake_up_pollfree() wait: add wake_up_pollfree()
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Paolo Bonzini: "More x86 fixes: - Logic bugs in CR0 writes and Hyper-V hypercalls - Don't use Enlightened MSR Bitmap for L3 - Remove user-triggerable WARN Plus a few selftest fixes and a regression test for the user-triggerable WARN" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: selftests: KVM: Add test to verify KVM doesn't explode on "bad" I/O KVM: x86: Don't WARN if userspace mucks with RCX during string I/O exit KVM: X86: Raise #GP when clearing CR0_PG in 64 bit mode selftests: KVM: avoid failures due to reserved HyperTransport region KVM: x86: Ignore sparse banks size for an "all CPUs", non-sparse IPI req KVM: x86: Wait for IPIs to be delivered when handling Hyper-V TLB flush hypercall KVM: x86: selftests: svm_int_ctl_test: fix intercept calculation KVM: nVMX: Don't use Enlightened MSR Bitmap for L3
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Chris Packham authored
Maxime points out that the polling code in mpc_i2c_isr should use the _atomic API because it is called in an irq context and that the behaviour of the MCF bit is that it is 1 when the byte transfer is complete. All of this means the original code was effectively a udelay(100). Fix this by using readb_poll_timeout_atomic() and removing the negation of the break condition. Fixes: 4a8ac5e4 ("i2c: mpc: Poll for MCF") Reported-by:
Maxime Bizon <mbizon@freebox.fr> Signed-off-by:
Chris Packham <chris.packham@alliedtelesis.co.nz> Tested-by:
Maxime Bizon <mbizon@freebox.fr> Signed-off-by:
Wolfram Sang <wsa@kernel.org>
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Jens Axboe authored
We check IO_WQ_BIT_EXIT before attempting to create a new worker, and wq exit cancels pending work if we have any. But it's possible to have a race between the two, where creation checks exit finding it not set, but we're in the process of exiting. The exit side will cancel pending creation task_work, but there's a gap where we add task_work after we've canceled existing creations at exit time. Fix this by checking the EXIT bit post adding the creation task_work. If it's set, run the same cancelation that exit does. Reported-and-tested-by:
<syzbot+b60c982cb0efc5e05a47@syzkaller.appspotmail.com> Reviewed-by:
Hao Xu <haoxu@linux.alibaba.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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Jens Axboe authored
If we successfully cancel a work item but that work item needs to be processed through task_work, then we can be sleeping uninterruptibly in io_uring_cancel_generic() and never process it. Hence we don't make forward progress and we end up with an uninterruptible sleep warning. While in there, correct a comment that should be IFF, not IIF. Reported-and-tested-by:
<syzbot+21e6887c0be14181206d@syzkaller.appspotmail.com> Cc: stable@vger.kernel.org Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI fixes from Bjorn Helgaas: - Revert emulation of Marvell Armada A3720 expansion ROM because it doesn't work as expected (Marek Behún) - Assert PERST# in Apple M1 driver to fix initialization when booting from bootloaders using PCIe, such as U-Boot (Marc Zyngier) - Describe PERST# as active low in Apple T8103 DT and update driver to match (Marc Zyngier) * tag 'pci-v5.16-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: apple: Fix PERST# polarity arm64: dts: apple: t8103: Mark PCIe PERST# polarity active low in DT PCI: apple: Follow the PCIe specifications when resetting the port Revert "PCI: aardvark: Fix support for PCI_ROM_ADDRESS1 on emulated bridge"
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