kernel/linux.git/tools/testing/selftests/cgroup, branch v6.3.6

selftests: cgroup: Add 'malloc' failures checks in test_memcontrol

2023-05-24T16:30:00+00:00

[ Upstream commit c83f320e55a49abd90629f42a72897afd579e0de ] There are several 'malloc' calls in test_memcontrol, which can be unsuccessful. This patch will add 'malloc' failures checking to give more details about test's fail reasons and avoid possible undefined behavior during the future null dereference (like the one in alloc_anon_50M_check_swap function). Signed-off-by: Ivan Orlov Reviewed-by: Muchun Song Acked-by: Shakeel Butt Acked-by: Roman Gushchin Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

cgroup/cpuset: Fix wrong check in update_parent_subparts_cpumask()

2023-01-31T22:14:02+00:00

It was found that the check to see if a partition could use up all the cpus from the parent cpuset in update_parent_subparts_cpumask() was incorrect. As a result, it is possible to leave parent with no effective cpu left even if there are tasks in the parent cpuset. This can lead to system panic as reported in [1]. Fix this probem by updating the check to fail the enabling the partition if parent's effective_cpus is a subset of the child's cpus_allowed. Also record the error code when an error happens in update_prstate() and add a test case where parent partition and child have the same cpu list and parent has task. Enabling partition in the child will fail in this case. [1] https://www.spinics.net/lists/cgroups/msg36254.html Fixes: f0af1bfc27b5 ("cgroup/cpuset: Relax constraints to partition & cpus changes") Cc: stable@vger.kernel.org # v6.1 Reported-by: Srinivas Pandruvada Signed-off-by: Waiman Long Signed-off-by: Tejun Heo

Merge tag 'mm-stable-2022-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-12-14T03:29:45+00:00

Pull MM updates from Andrew Morton: - More userfaultfs work from Peter Xu - Several convert-to-folios series from Sidhartha Kumar and Huang Ying - Some filemap cleanups from Vishal Moola - David Hildenbrand added the ability to selftest anon memory COW handling - Some cpuset simplifications from Liu Shixin - Addition of vmalloc tracing support by Uladzislau Rezki - Some pagecache folioifications and simplifications from Matthew Wilcox - A pagemap cleanup from Kefeng Wang: we have VM_ACCESS_FLAGS, so use it - Miguel Ojeda contributed some cleanups for our use of the __no_sanitize_thread__ gcc keyword. This series should have been in the non-MM tree, my bad - Naoya Horiguchi improved the interaction between memory poisoning and memory section removal for huge pages - DAMON cleanups and tuneups from SeongJae Park - Tony Luck fixed the handling of COW faults against poisoned pages - Peter Xu utilized the PTE marker code for handling swapin errors - Hugh Dickins reworked compound page mapcount handling, simplifying it and making it more efficient - Removal of the autonuma savedwrite infrastructure from Nadav Amit and David Hildenbrand - zram support for multiple compression streams from Sergey Senozhatsky - David Hildenbrand reworked the GUP code's R/O long-term pinning so that drivers no longer need to use the FOLL_FORCE workaround which didn't work very well anyway - Mel Gorman altered the page allocator so that local IRQs can remnain enabled during per-cpu page allocations - Vishal Moola removed the try_to_release_page() wrapper - Stefan Roesch added some per-BDI sysfs tunables which are used to prevent network block devices from dirtying excessive amounts of pagecache - David Hildenbrand did some cleanup and repair work on KSM COW breaking - Nhat Pham and Johannes Weiner have implemented writeback in zswap's zsmalloc backend - Brian Foster has fixed a longstanding corner-case oddity in file[map]_write_and_wait_range() - sparse-vmemmap changes for MIPS, LoongArch and NIOS2 from Feiyang Chen - Shiyang Ruan has done some work on fsdax, to make its reflink mode work better under xfstests. Better, but still not perfect - Christoph Hellwig has removed the .writepage() method from several filesystems. They only need .writepages() - Yosry Ahmed wrote a series which fixes the memcg reclaim target beancounting - David Hildenbrand has fixed some of our MM selftests for 32-bit machines - Many singleton patches, as usual * tag 'mm-stable-2022-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (313 commits) mm/hugetlb: set head flag before setting compound_order in __prep_compound_gigantic_folio mm: mmu_gather: allow more than one batch of delayed rmaps mm: fix typo in struct pglist_data code comment kmsan: fix memcpy tests mm: add cond_resched() in swapin_walk_pmd_entry() mm: do not show fs mm pc for VM_LOCKONFAULT pages selftests/vm: ksm_functional_tests: fixes for 32bit selftests/vm: cow: fix compile warning on 32bit selftests/vm: madv_populate: fix missing MADV_POPULATE_(READ|WRITE) definitions mm/gup_test: fix PIN_LONGTERM_TEST_READ with highmem mm,thp,rmap: fix races between updates of subpages_mapcount mm: memcg: fix swapcached stat accounting mm: add nodes= arg to memory.reclaim mm: disable top-tier fallback to reclaim on proactive reclaim selftests: cgroup: make sure reclaim target memcg is unprotected selftests: cgroup: refactor proactive reclaim code to reclaim_until() mm: memcg: fix stale protection of reclaim target memcg mm/mmap: properly unaccount memory on mas_preallocate() failure omfs: remove ->writepage jfs: remove ->writepage ...

Merge tag 'mm-nonmm-stable-2022-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-12-13T01:28:58+00:00

Pull non-MM updates from Andrew Morton: - A ptrace API cleanup series from Sergey Shtylyov - Fixes and cleanups for kexec from ye xingchen - nilfs2 updates from Ryusuke Konishi - squashfs feature work from Xiaoming Ni: permit configuration of the filesystem's compression concurrency from the mount command line - A series from Akinobu Mita which addresses bound checking errors when writing to debugfs files - A series from Yang Yingliang to address rapidio memory leaks - A series from Zheng Yejian to address possible overflow errors in encode_comp_t() - And a whole shower of singleton patches all over the place * tag 'mm-nonmm-stable-2022-12-12' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (79 commits) ipc: fix memory leak in init_mqueue_fs() hfsplus: fix bug causing custom uid and gid being unable to be assigned with mount rapidio: devices: fix missing put_device in mport_cdev_open kcov: fix spelling typos in comments hfs: Fix OOB Write in hfs_asc2mac hfs: fix OOB Read in __hfs_brec_find relay: fix type mismatch when allocating memory in relay_create_buf() ocfs2: always read both high and low parts of dinode link count io-mapping: move some code within the include guarded section kernel: kcsan: kcsan_test: build without structleak plugin mailmap: update email for Iskren Chernev eventfd: change int to __u64 in eventfd_signal() ifndef CONFIG_EVENTFD rapidio: fix possible UAF when kfifo_alloc() fails relay: use strscpy() is more robust and safer cpumask: limit visibility of FORCE_NR_CPUS acct: fix potential integer overflow in encode_comp_t() acct: fix accuracy loss for input value of encode_comp_t() linux/init.h: include and rapidio: rio: fix possible name leak in rio_register_mport() rapidio: fix possible name leaks when rio_add_device() fails ...

Merge tag 'cgroup-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2022-12-12T23:48:36+00:00

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

selftests: cgroup: make sure reclaim target memcg is unprotected

2022-12-12T02:12:19+00:00

Make sure that we ignore protection of a memcg that is the target of memcg reclaim. Link: https://lkml.kernel.org/r/20221202031512.1365483-4-yosryahmed@google.com Signed-off-by: Yosry Ahmed Reviewed-by: Roman Gushchin Cc: Chris Down Cc: David Rientjes Cc: Johannes Weiner Cc: Matthew Wilcox Cc: Michal Hocko Cc: Muchun Song Cc: Shakeel Butt Cc: Tejun Heo Cc: Vasily Averin Cc: Vlastimil Babka Cc: Yu Zhao Signed-off-by: Andrew Morton

selftests: cgroup: refactor proactive reclaim code to reclaim_until()

2022-12-12T02:12:19+00:00

Refactor the code that drives writing to memory.reclaim (retrying, error handling, etc) from test_memcg_reclaim() to a helper called reclaim_until(), which proactively reclaims from a memcg until its usage reaches a certain value. While we are at it, refactor and simplify the reclaim loop. This will be used in a following patch in another test. Link: https://lkml.kernel.org/r/20221202031512.1365483-3-yosryahmed@google.com Signed-off-by: Yosry Ahmed Suggested-by: Roman Gushchin Reviewed-by: Roman Gushchin Cc: Chris Down Cc: David Rientjes Cc: Johannes Weiner Cc: Matthew Wilcox Cc: Michal Hocko Cc: Muchun Song Cc: Shakeel Butt Cc: Tejun Heo Cc: Vasily Averin Cc: Vlastimil Babka Cc: Yu Zhao Signed-off-by: Andrew Morton

kselftests: cgroup: update kmem test precision tolerance

2022-12-10T02:41:16+00:00

1813e51eece0 ("memcg: increase MEMCG_CHARGE_BATCH to 64") has changed the batch size while this test case has been left behind. This has led to a test failure reported by test bot: not ok 2 selftests: cgroup: test_kmem # exit=1 Update the tolerance for the pcp charges to reflect the MEMCG_CHARGE_BATCH change to fix this. [akpm@linux-foundation.org: update comments, per Roman] Link: https://lkml.kernel.org/r/Y4m8Unt6FhWKC6IH@dhcp22.suse.cz Fixes: 1813e51eece0a ("memcg: increase MEMCG_CHARGE_BATCH to 64") Signed-off-by: Michal Hocko Reported-by: kernel test robot Link: https://lore.kernel.org/oe-lkp/202212010958.c1053bd3-yujie.liu@intel.com Acked-by: Shakeel Butt Acked-by: Roman Gushchin Tested-by: Yujie Liu Cc: Eric Dumazet Cc: Feng Tang Cc: Johannes Weiner Cc: "Michal Koutný" Cc: Muchun Song Cc: Soheil Hassas Yeganeh Signed-off-by: Andrew Morton

kselftest/cgroup: Add cleanup() to test_cpuset_prs.sh

2022-11-22T20:25:37+00:00

Install a cleanup function using the trap command for signals EXIT, SIGINT, SIGQUIT and SIGABRT. The cleanup function will perform: 1. Online the CPUs that were made offline during the test. 2. Removing the cgroups created. 3. Restoring the original /sys/kernel/debug/sched/verbose value, currently it's left turned on, irrespective of the original configuration value. the test performs steps 1 and 2, on the successful runs, but not during all of the failed runs. With the cleanup(), the system will perform all three steps during failed/passed test runs. Signed-off-by: Kamalesh Babulal Acked-by: Waiman Long Signed-off-by: Tejun Heo

selftests: cgroup: fix unsigned comparison with less than zero

2022-11-18T21:55:09+00:00

'size' is unsigned, it never less than zero. Link: https://lkml.kernel.org/r/20221105110611.28920-1-yuehaibing@huawei.com Fixes: 6c26df84e1f2 ("selftests: cgroup: return -errno from cg_read()/cg_write() on failure") Signed-off-by: YueHaibing Reviewed-by: Yosry Ahmed Acked-by: Roman Gushchin Reviewed-by: Kamalesh Babulal Cc: David Rientjes Cc: Johannes Weiner Cc: Shakeel Butt Cc: Shuah Khan Cc: Tejun Heo Cc: zefan li Signed-off-by: Andrew Morton