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| author | Manfred Spraul <manfred@colorfullife.com> | 2014-06-06 14:37:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-06 16:08:14 -0700 |
| commit | 09c6eb1f651dad601f02435bbd79734954960c42 (patch) | |
| tree | 8777788a3a4f7ebdc2805cd84d276584ecee3491 /fs/signalfd.c | |
| parent | 247a8ce8229b16d4ffa9f5125fb6583aa749679d (diff) | |
| download | linux-stable-09c6eb1f651dad601f02435bbd79734954960c42.tar.gz linux-stable-09c6eb1f651dad601f02435bbd79734954960c42.tar.bz2 linux-stable-09c6eb1f651dad601f02435bbd79734954960c42.zip | |
ipc/shm.c: check for overflows of shm_tot
shm_tot counts the total number of pages used by shm segments.
If SHMALL is ULONG_MAX (or nearly ULONG_MAX), then the number can
overflow. Subsequent calls to shmctl(,SHM_INFO,) would return wrong
values for shm_tot.
The patch adds a detection for overflows.
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Acked-by: Davidlohr Bueso <davidlohr@hp.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/signalfd.c')
0 files changed, 0 insertions, 0 deletions