linux-kernelorg-stable/ipc
Manfred Spraul a2642f8770 ipc/shm.c: avoid ipc_rcu_putref for failed ipc_addid()
Loosely based on a patch from Kees Cook <keescook@chromium.org>:
 - id and error can be merged
 - if operations before ipc_addid() fail, then use call_rcu() directly.

The difference is that call_rcu is used for failures after
security_shm_alloc(), to continue to guaranteed an rcu delay for
security_sem_free().

Link: http://lkml.kernel.org/r/20170525185107.12869-15-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>
2017-07-12 16:26:02 -07:00
..
Makefile
compat.c
ipc_sysctl.c
mq_sysctl.c
mqueue.c
msg.c ipc/msg: avoid ipc_rcu_alloc() 2017-07-12 16:26:02 -07:00
msgutil.c
namespace.c
sem.c ipc/sem.c: avoid ipc_rcu_putref for failed ipc_addid() 2017-07-12 16:26:02 -07:00
shm.c ipc/shm.c: avoid ipc_rcu_putref for failed ipc_addid() 2017-07-12 16:26:02 -07:00
syscall.c
util.c ipc/util: drop ipc_rcu_alloc() 2017-07-12 16:26:02 -07:00
util.h ipc/util: drop ipc_rcu_alloc() 2017-07-12 16:26:02 -07:00