Linus Torvalds 7a77379e7e Initialize msg/shm IPC objects before doing ipc_addid() ... (cherry pick from commit b9a532277938798b53178d5a66af6e2915cb27cf) 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 e8577d1f0329: "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: Mark Salyzyn <salyzyn@google.com> Bug: 24551430 Change-Id: Ic7b980a6f2a79eb3c04fc43b6531c396645af1db Conflicts: ipc/msg.c ipc/shm.c		2016-05-18 14:32:58 +05:30
..
Makefile	…
compat.c	ipc: fix compat msgrcv with negative msgtyp	2015-04-19 10:10:50 +02:00
compat_mq.c	…
ipc_sysctl.c	ipc: always handle a new value of auto_msgmni	2014-11-21 09:22:54 -08:00
ipcns_notifier.c	…
mq_sysctl.c	ipc,mqueue: remove limits for the amount of system-wide queues	2014-03-06 21:30:12 -08:00
mqueue.c	ipc,mqueue: remove limits for the amount of system-wide queues	2014-03-06 21:30:12 -08:00
msg.c	Initialize msg/shm IPC objects before doing ipc_addid()	2016-05-18 14:32:58 +05:30
msgutil.c	ipc, msg: fix message length check for negative values	2013-12-04 10:56:10 -08:00
namespace.c	ipc: drop ipc_lock_by_ptr	2013-10-18 07:45:48 -07:00
sem.c	ipc/sem.c: fully initialize sem_array before making it visible	2016-05-18 14:32:58 +05:30
shm.c	Initialize msg/shm IPC objects before doing ipc_addid()	2016-05-18 14:32:58 +05:30
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()	2016-05-18 14:32:58 +05:30
util.h	ipc, msg: fix message length check for negative values	2013-12-04 10:56:10 -08:00