Manfred Spraul 7eb371bed3 ipc/sem.c: fully initialize sem_array before making it visible ... (cherry pick from commit e8577d1f0329d4842e8302e289fb2c22156abef4) ipc_addid() makes a new ipc identifier visible to everyone. New objects start as locked, so that the caller can complete the initialization after the call. Within struct sem_array, at least sma->sem_base and sma->sem_nsems are accessed without any locks, therefore this approach doesn't work. Thus: Move the ipc_addid() to the end of the initialization. Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Reported-by: Rik van Riel <riel@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Davidlohr Bueso <dave@stgolabs.net> Acked-by: Rafael Aquini <aquini@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Mark Salyzyn <salyzyn@google.com> Bug: 24551430 Change-Id: I36a8cc2281dfd68e9a399695f1d7e7b038e105d0		2016-05-18 14:32:58 +05:30
..
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
Makefile
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	ipc: Fix 2 bugs in msgrcv() MSG_COPY implementation	2014-03-23 21:38:17 -07:00
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	ipc,shm: fix shm_file deletion races	2013-11-29 11:11:41 -08:00
syscall.c	get rid of union semop in sys_semctl(2) arguments	2013-03-05 15:14:16 -05:00
util.c	ipc: update locking scheme comments	2013-12-04 10:56:12 -08:00
util.h	ipc, msg: fix message length check for negative values	2013-12-04 10:56:10 -08:00