Revision 855b018325737f7691f9b7d86339df40aa4e47c3 authored by Michal Hocko on 25 March 2016, 21:20:36 UTC, committed by Linus Torvalds on 25 March 2016, 23:37:42 UTC
Tetsuo has reported that oom_kill_allocating_task=1 will cause oom_reaper_list corruption because oom_kill_process doesn't follow standard OOM exclusion (aka ignores TIF_MEMDIE) and allows to enqueue the same task multiple times - e.g. by sacrificing the same child multiple times. This patch fixes the issue by introducing a new MMF_OOM_KILLED mm flag which is set in oom_kill_process atomically and oom reaper is disabled if the flag was already set. Signed-off-by: Michal Hocko <mhocko@suse.com> Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| kasan | ||
| Kconfig | -rw-r--r-- | 22.4 KB |
| Kconfig.debug | -rw-r--r-- | 3.7 KB |
| Makefile | -rw-r--r-- | 3.3 KB |
| backing-dev.c | -rw-r--r-- | 26.4 KB |
| balloon_compaction.c | -rw-r--r-- | 6.6 KB |
| bootmem.c | -rw-r--r-- | 21.0 KB |
| cleancache.c | -rw-r--r-- | 9.9 KB |
| cma.c | -rw-r--r-- | 12.1 KB |
| cma.h | -rw-r--r-- | 515 bytes |
| cma_debug.c | -rw-r--r-- | 4.4 KB |
| compaction.c | -rw-r--r-- | 52.8 KB |
| debug.c | -rw-r--r-- | 4.0 KB |
| debug_page_ref.c | -rw-r--r-- | 1.3 KB |
| dmapool.c | -rw-r--r-- | 13.8 KB |
| early_ioremap.c | -rw-r--r-- | 6.2 KB |
| fadvise.c | -rw-r--r-- | 3.7 KB |
| failslab.c | -rw-r--r-- | 1.4 KB |
| filemap.c | -rw-r--r-- | 75.7 KB |
| frame_vector.c | -rw-r--r-- | 6.2 KB |
| frontswap.c | -rw-r--r-- | 14.3 KB |
| gup.c | -rw-r--r-- | 43.9 KB |
| highmem.c | -rw-r--r-- | 11.8 KB |
| huge_memory.c | -rw-r--r-- | 90.5 KB |
| hugetlb.c | -rw-r--r-- | 117.9 KB |
| hugetlb_cgroup.c | -rw-r--r-- | 10.5 KB |
| hwpoison-inject.c | -rw-r--r-- | 3.2 KB |
| init-mm.c | -rw-r--r-- | 619 bytes |
| internal.h | -rw-r--r-- | 15.0 KB |
| interval_tree.c | -rw-r--r-- | 3.1 KB |
| kmemcheck.c | -rw-r--r-- | 2.9 KB |
| kmemleak-test.c | -rw-r--r-- | 3.2 KB |
| kmemleak.c | -rw-r--r-- | 54.5 KB |
| ksm.c | -rw-r--r-- | 63.1 KB |
| list_lru.c | -rw-r--r-- | 12.6 KB |
| maccess.c | -rw-r--r-- | 3.1 KB |
| madvise.c | -rw-r--r-- | 19.4 KB |
| memblock.c | -rw-r--r-- | 48.5 KB |
| memcontrol.c | -rw-r--r-- | 150.9 KB |
| memory-failure.c | -rw-r--r-- | 48.7 KB |
| memory.c | -rw-r--r-- | 106.8 KB |
| memory_hotplug.c | -rw-r--r-- | 53.7 KB |
| mempolicy.c | -rw-r--r-- | 71.2 KB |
| mempool.c | -rw-r--r-- | 14.3 KB |
| memtest.c | -rw-r--r-- | 2.7 KB |
| migrate.c | -rw-r--r-- | 48.0 KB |
| mincore.c | -rw-r--r-- | 6.7 KB |
| mlock.c | -rw-r--r-- | 21.0 KB |
| mm_init.c | -rw-r--r-- | 4.8 KB |
| mmap.c | -rw-r--r-- | 88.5 KB |
| mmu_context.c | -rw-r--r-- | 1.3 KB |
| mmu_notifier.c | -rw-r--r-- | 11.7 KB |
| mmzone.c | -rw-r--r-- | 2.4 KB |
| mprotect.c | -rw-r--r-- | 11.2 KB |
| mremap.c | -rw-r--r-- | 15.1 KB |
| msync.c | -rw-r--r-- | 2.6 KB |
| nobootmem.c | -rw-r--r-- | 11.1 KB |
| nommu.c | -rw-r--r-- | 49.4 KB |
| oom_kill.c | -rw-r--r-- | 25.3 KB |
| page-writeback.c | -rw-r--r-- | 83.6 KB |
| page_alloc.c | -rw-r--r-- | 197.1 KB |
| page_counter.c | -rw-r--r-- | 4.8 KB |
| page_ext.c | -rw-r--r-- | 10.7 KB |
| page_idle.c | -rw-r--r-- | 5.4 KB |
| page_io.c | -rw-r--r-- | 9.2 KB |
| page_isolation.c | -rw-r--r-- | 8.4 KB |
| page_owner.c | -rw-r--r-- | 8.9 KB |
| page_poison.c | -rw-r--r-- | 3.5 KB |
| pagewalk.c | -rw-r--r-- | 7.5 KB |
| percpu-km.c | -rw-r--r-- | 2.8 KB |
| percpu-vm.c | -rw-r--r-- | 10.0 KB |
| percpu.c | -rw-r--r-- | 65.8 KB |
| pgtable-generic.c | -rw-r--r-- | 4.8 KB |
| process_vm_access.c | -rw-r--r-- | 9.9 KB |
| quicklist.c | -rw-r--r-- | 2.4 KB |
| readahead.c | -rw-r--r-- | 15.3 KB |
| rmap.c | -rw-r--r-- | 50.6 KB |
| shmem.c | -rw-r--r-- | 90.8 KB |
| slab.c | -rw-r--r-- | 106.7 KB |
| slab.h | -rw-r--r-- | 12.6 KB |
| slab_common.c | -rw-r--r-- | 30.0 KB |
| slob.c | -rw-r--r-- | 16.0 KB |
| slub.c | -rw-r--r-- | 133.8 KB |
| sparse-vmemmap.c | -rw-r--r-- | 7.8 KB |
| sparse.c | -rw-r--r-- | 20.8 KB |
| swap.c | -rw-r--r-- | 26.2 KB |
| swap_cgroup.c | -rw-r--r-- | 4.6 KB |
| swap_state.c | -rw-r--r-- | 13.1 KB |
| swapfile.c | -rw-r--r-- | 77.5 KB |
| truncate.c | -rw-r--r-- | 23.8 KB |
| userfaultfd.c | -rw-r--r-- | 7.2 KB |
| util.c | -rw-r--r-- | 15.0 KB |
| vmacache.c | -rw-r--r-- | 3.1 KB |
| vmalloc.c | -rw-r--r-- | 68.0 KB |
| vmpressure.c | -rw-r--r-- | 12.5 KB |
| vmscan.c | -rw-r--r-- | 110.1 KB |
| vmstat.c | -rw-r--r-- | 42.3 KB |
| workingset.c | -rw-r--r-- | 17.0 KB |
| zbud.c | -rw-r--r-- | 18.2 KB |
| zpool.c | -rw-r--r-- | 10.0 KB |
| zsmalloc.c | -rw-r--r-- | 48.4 KB |
| zswap.c | -rw-r--r-- | 32.0 KB |
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