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David Rientjes 1e11ad8dc4 mm, oom: fix badness score underflow 
If the privileges given to root threads (3% of allowable memory) or a
negative value of /proc/pid/oom_score_adj happen to exceed the amount of
rss of a thread, its badness score overflows as a result of commit
a7f638f999ff ("mm, oom: normalize oom scores to oom_score_adj scale only
for userspace").

Fix this by making the type signed and return 1, meaning the thread is
still eligible for kill, if the value is negative.

Reported-by: Dave Jones <davej@redhat.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-08 15:07:35 -07:00
..
backing-dev.c
backing-dev: fix wakeup timer races with bdi_unregister()
2012-02-01 16:52:49 +08:00
bootmem.c
mm/bootmem.c: cleanup on addition to bootmem data list
2012-05-29 16:22:24 -07:00
bounce.c
mm: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:27 +08:00
cleancache.c
->encode_fh() API change
2012-05-29 23:28:33 -04:00
compaction.c
Revert "mm: compaction: handle incorrect MIGRATE_UNMOVABLE type pageblocks"
2012-06-03 20:05:57 -07:00
debug-pagealloc.c
mm, x86: Remove debug_pagealloc_enabled
2011-12-06 09:24:07 +01:00
dmapool.c
mm: fix implicit stat.h usage in dmapool.c
2011-10-31 09:20:12 -04:00
fadvise.c
fadvise: only initiate writeback for specified range with FADV_DONTNEED
2012-01-10 16:30:43 -08:00
failslab.c
switch debugfs to umode_t
2012-01-03 22:54:56 -05:00
filemap_xip.c
fs: introduce inode operation ->update_time
2012-06-01 12:07:25 -04:00
filemap.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
fremap.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
frontswap.c
frontswap: s/put_page/store/g s/get_page/load
2012-05-15 11:34:08 -04:00
highmem.c
Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
2011-11-06 19:44:47 -08:00
huge_memory.c
mm/memcg: apply add/del_page to lruvec
2012-05-29 16:22:28 -07:00
hugetlb.c
mm: fix vma_resv_map() NULL pointer
2012-05-30 08:48:13 -07:00
hwpoison-inject.c
HWPOISON: Clean up memory_failure() vs. __memory_failure()
2012-01-03 12:06:32 -08:00
init-mm.c
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
internal.h
Revert "mm: compaction: handle incorrect MIGRATE_UNMOVABLE type pageblocks"
2012-06-03 20:05:57 -07:00
Kconfig
Frontswap provides a "transcendent memory" interface for swap pages.
2012-06-04 12:28:45 -07:00
Kconfig.debug
mm: more intensive memory corruption debugging
2012-01-10 16:30:42 -08:00
kmemcheck.c
…
kmemleak-test.c
kmemleak: remove memset by using kzalloc
2011-01-27 18:31:51 +00:00
kmemleak.c
kmemleak: Disable early logging when kmemleak is off by default
2012-01-20 16:57:05 +00:00
ksm.c
ksm: cleanup: introduce find_mergeable_vma()
2012-03-21 17:54:59 -07:00
maccess.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
madvise.c
mm/fs: route MADV_REMOVE to FALLOC_FL_PUNCH_HOLE
2012-05-29 16:22:22 -07:00
Makefile
Frontswap provides a "transcendent memory" interface for swap pages.
2012-06-04 12:28:45 -07:00
memblock.c
mm/memblock: fix memory leak on extending regions
2012-05-29 16:22:24 -07:00
memcontrol.c
memcg: decrement static keys at real destroy time
2012-05-29 16:22:28 -07:00
memory_hotplug.c
mm: print physical addresses consistently with other parts of kernel
2012-05-29 16:22:21 -07:00
memory-failure.c
mm/memory_failure: let the compiler add the function name
2012-05-29 16:22:18 -07:00
memory.c
thp, memcg: split hugepage for memcg oom on cow
2012-05-29 16:22:19 -07:00
mempolicy.c
mm: do_migrate_pages(): rename arguments
2012-05-29 16:22:20 -07:00
mempool.c
mempool: fix first round failure behavior
2012-01-10 16:30:45 -08:00
migrate.c
mm: fix warning in __set_page_dirty_nobuffers
2012-06-03 20:05:47 -07:00
mincore.c
mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode
2012-03-21 17:54:54 -07:00
mlock.c
vm: avoid using find_vma_prev() unnecessarily
2012-03-06 18:23:36 -08:00
mm_init.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
mmap.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
mmu_context.c
mm, counters: remove task argument to sync_mm_rss() and __sync_task_rss_stat()
2012-03-21 17:54:59 -07:00
mmu_notifier.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
mmzone.c
mm: add link from struct lruvec to struct zone
2012-05-29 16:22:26 -07:00
mprotect.c
Merge branch 'akpm' (Andrew's patch-bomb)
2012-03-22 09:04:48 -07:00
mremap.c
move security_mmap_addr() to saner place
2012-06-01 10:37:16 -04:00
msync.c
…
nobootmem.c
mm: remove sparsemem allocation details from the bootmem allocator
2012-05-29 16:22:22 -07:00
nommu.c
nommu: fix compilation of nommu.c
2012-06-04 17:17:31 -04:00
oom_kill.c
mm, oom: fix badness score underflow
2012-06-08 15:07:35 -07:00
page_alloc.c
Revert "mm: compaction: handle incorrect MIGRATE_UNMOVABLE type pageblocks"
2012-06-03 20:05:57 -07:00
page_cgroup.c
page_cgroup: fix horrid swap accounting regression
2012-03-06 08:18:23 -08:00
page_io.c
frontswap: s/put_page/store/g s/get_page/load
2012-05-15 11:34:08 -04:00
page_isolation.c
mm: page_isolation: MIGRATE_CMA isolation functions added
2012-05-21 15:09:33 +02:00
page-writeback.c
writeback: initialize global_dirty_limit
2012-05-06 13:41:58 +08:00
pagewalk.c
mm: thp: fix pmd_bad() triggering in code paths holding mmap_sem read mode
2012-03-21 17:54:54 -07:00
percpu-km.c
…
percpu-vm.c
percpu: use bitmap_clear
2012-01-20 09:23:16 -08:00
percpu.c
kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP
2012-05-09 10:13:29 -07:00
pgtable-generic.c
arch/tile: allow building Linux with transparent huge pages enabled
2012-05-25 12:48:21 -04:00
prio_tree.c
sanitize <linux/prefetch.h> usage
2011-05-20 12:50:29 -07:00
process_vm_access.c
aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()
2012-05-31 17:49:32 -07:00
quicklist.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
readahead.c
mm: move readahead syscall to mm/readahead.c
2012-05-29 16:22:23 -07:00
rmap.c
mm: remove swap token code
2012-05-29 16:22:19 -07:00
shmem.c
shmem: replace_page must flush_dcache and others
2012-06-07 14:43:54 -07:00
slab.c
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
2012-03-28 15:04:26 -07:00
slob.c
mm: Map most files to use export.h instead of module.h
2011-10-31 09:20:12 -04:00
slub.c
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
2012-06-01 16:50:23 -07:00
sparse-vmemmap.c
mm: delete various needless include <linux/module.h>
2011-10-31 09:20:11 -04:00
sparse.c
mm: remove sparsemem allocation details from the bootmem allocator
2012-05-29 16:22:22 -07:00
swap_state.c
mm: fix s390 BUG by __set_page_dirty_no_writeback on swap
2012-04-23 18:19:22 -07:00
swap.c
mm/memcg: apply add/del_page to lruvec
2012-05-29 16:22:28 -07:00
swapfile.c
Frontswap provides a "transcendent memory" interface for swap pages.
2012-06-04 12:28:45 -07:00
truncate.c
mm/fs: remove truncate_range
2012-05-29 16:22:23 -07:00
util.c
new helper: vm_mmap_pgoff()
2012-06-01 10:37:18 -04:00
vmalloc.c
mm: fix faulty initialization in vmalloc_init()
2012-05-29 16:22:24 -07:00
vmscan.c
mm/memcg: apply add/del_page to lruvec
2012-05-29 16:22:28 -07:00
vmstat.c
mm/vmstat.c: remove debug fs entries on failure of file creation and made extfrag_debug_root dentry local
2012-05-29 16:22:19 -07:00