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| author | Manfred Spraul <manfred@colorfullife.com> | 2017-07-12 14:35:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-12 16:26:02 -0700 |
| commit | 51c23b7b7db52493d4fc869cec8c3e8fe27bfcd3 (patch) | |
| tree | 087792a59b22078d3e88f70ad413ed5401403d6e /ipc/sem.c | |
| parent | a2642f8770993a1598500bb6a8082b7c32faff8b (diff) | |
| download | linux-stable-51c23b7b7db52493d4fc869cec8c3e8fe27bfcd3.tar.gz linux-stable-51c23b7b7db52493d4fc869cec8c3e8fe27bfcd3.tar.bz2 linux-stable-51c23b7b7db52493d4fc869cec8c3e8fe27bfcd3.zip | |
ipc/msg.c: avoid ipc_rcu_putref for failed ipc_addid()
Loosely based on a patch from Kees Cook <keescook@chromium.org>:
- id and retval can be merged
- if ipc_addid() fails, then use call_rcu() directly.
The difference is that call_rcu is used for failed ipc_addid() calls, to
continue to guaranteed an rcu delay for security_msg_queue_free().
Link: http://lkml.kernel.org/r/20170525185107.12869-16-manfred@colorfullife.com
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/sem.c')
0 files changed, 0 insertions, 0 deletions