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| author | Manfred Spraul | 2017-07-12 23:35:13 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2017-07-13 01:26:02 +0200 |
| commit | 2ec55f8024db859d70f14c26e91ca044328dd50d (patch) | |
| tree | 8e37263fd21347b0f173d38697f856547ea829b7 /ipc/shm.c | |
| parent | ipc/util: drop ipc_rcu_alloc() (diff) | |
| download | kernel-qcow2-linux-2ec55f8024db859d70f14c26e91ca044328dd50d.tar.gz kernel-qcow2-linux-2ec55f8024db859d70f14c26e91ca044328dd50d.tar.xz kernel-qcow2-linux-2ec55f8024db859d70f14c26e91ca044328dd50d.zip | |
ipc/sem.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_sem_free().
Link: http://lkml.kernel.org/r/20170525185107.12869-14-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/shm.c')
0 files changed, 0 insertions, 0 deletions