Linus Torvalds 3cda8eb001 Initialize msg/shm IPC objects before doing ipc_addid() ... commit b9a532277938798b53178d5a66af6e2915cb27cf upstream. As reported by Dmitry Vyukov, we really shouldn't do ipc_addid() before having initialized the IPC object state. Yes, we initialize the IPC object in a locked state, but with all the lockless RCU lookup work, that IPC object lock no longer means that the state cannot be seen. We already did this for the IPC semaphore code (see commit e8577d1f03: "ipc/sem.c: fully initialize sem_array before making it visible") but we clearly forgot about msg and shm. Reported-by: Dmitry Vyukov <dvyukov@google.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> [lizf: Backported to 3.4: adjust context] Signed-off-by: Zefan Li <lizefan@huawei.com>		2016-03-21 09:17:56 +08:00
..
compat.c	[PATCH v3] ipc: provide generic compat versions of IPC syscalls	2012-03-15 13:13:38 -04:00
compat_mq.c
ipc_sysctl.c
ipcns_notifier.c
Makefile
mq_sysctl.c
mqueue.c	switch open-coded instances of d_make_root() to new helper	2012-03-20 21:29:35 -04:00
msg.c	Initialize msg/shm IPC objects before doing ipc_addid()	2016-03-21 09:17:56 +08:00
msgutil.c	ipc, msg: fix message length check for negative values	2014-04-14 06:44:16 -07:00
namespace.c
sem.c	ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits	2016-03-21 09:17:52 +08:00
shm.c	Initialize msg/shm IPC objects before doing ipc_addid()	2016-03-21 09:17:56 +08:00
syscall.c
util.c	Initialize msg/shm IPC objects before doing ipc_addid()	2016-03-21 09:17:56 +08:00
util.h	ipc, msg: fix message length check for negative values	2014-04-14 06:44:16 -07:00