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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2018-04-10 16:31:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 10:28:33 -0700 |
| commit | 24b2ec21192c963c17a1b687b6171e95e8b59c06 (patch) | |
| tree | b306741760dc34e5c408055ddf84fb9d253ebdb4 /mm/hugetlb.c | |
| parent | d0f02231222b313d1b49278cd2e3c7e7406fea6d (diff) | |
| download | linux-24b2ec21192c963c17a1b687b6171e95e8b59c06.tar.bz2 | |
proc: check permissions earlier for /proc/*/wchan
get_wchan() accesses stack page before permissions are checked, let's
not play this game.
Link: http://lkml.kernel.org/r/20180217071923.GA16074@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
0 files changed, 0 insertions, 0 deletions