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Linus Torvalds b5495ddce4 Initialize msg/shm IPC objects before doing ipc_addid() ... [ Upstream commit b9a5322779 ] 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> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>		History 2015-10-27 22:13:50 -04:00
..
compat.c	ipc: resolve shadow warnings	2014-10-14 02:18:23 +02:00
compat_mq.c	ipc, kernel: use Linux headers	2014-06-06 16:08:14 -07:00
ipc_sysctl.c	ipc: always handle a new value of auto_msgmni	2014-10-14 02:18:22 +02:00
ipcns_notifier.c	ipc: do not use a negative value to re-enable msgmni automatic recomputing	2008-07-25 10:53:42 -07:00
Makefile	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
mq_sysctl.c	ipc: convert use of typedef ctl_table to struct ctl_table	2014-06-06 16:08:16 -07:00
mqueue.c	ipc: modify message queue accounting to not take kernel data structures into account	2015-08-27 13:25:30 -04:00
msg.c	Initialize msg/shm IPC objects before doing ipc_addid()	2015-10-27 22:13:50 -04:00
msgutil.c	ipc, msg: fix message length check for negative values	2013-11-13 12:09:36 +09:00
namespace.c	namespaces: Use task_lock and not rcu to protect nsproxy	2014-07-29 18:08:50 -07:00
sem.c	ipc/sem.c: update/correct memory barriers	2015-09-15 13:41:31 -04:00
shm.c	Initialize msg/shm IPC objects before doing ipc_addid()	2015-10-27 22:13:50 -04:00
syscall.c	get rid of union semop in sys_semctl(2) arguments	2013-03-05 15:14:16 -05:00
util.c	Initialize msg/shm IPC objects before doing ipc_addid()	2015-10-27 22:13:50 -04:00
util.h	ipc, kernel: clear whitespace	2014-06-06 16:08:14 -07:00