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| author | Yisheng Xie <xieyisheng1@huawei.com> | 2018-03-22 16:17:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-03-22 17:07:01 -0700 |
| commit | 8970a63e965b43288c4f5f40efbc2bbf80de7f16 (patch) | |
| tree | 5fbccafe8068d97d24f9cb26354cbfe9c0e6b3e1 /.cocciconfig | |
| parent | 3215b9d57a2c75c4305a3956ca303d7004485200 (diff) | |
| download | lwn-8970a63e965b43288c4f5f40efbc2bbf80de7f16.tar.gz lwn-8970a63e965b43288c4f5f40efbc2bbf80de7f16.zip | |
mm/mempolicy.c: avoid use uninitialized preferred_node
Alexander reported a use of uninitialized memory in __mpol_equal(),
which is caused by incorrect use of preferred_node.
When mempolicy in mode MPOL_PREFERRED with flags MPOL_F_LOCAL, it uses
numa_node_id() instead of preferred_node, however, __mpol_equal() uses
preferred_node without checking whether it is MPOL_F_LOCAL or not.
[akpm@linux-foundation.org: slight comment tweak]
Link: http://lkml.kernel.org/r/4ebee1c2-57f6-bcb8-0e2d-1833d1ee0bb7@huawei.com
Fixes: fc36b8d3d819 ("mempolicy: use MPOL_F_LOCAL to Indicate Preferred Local Policy")
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Reported-by: Alexander Potapenko <glider@google.com>
Tested-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '.cocciconfig')
0 files changed, 0 insertions, 0 deletions