Manfred Spraul d694ad62bf ipc/sem.c: fix race with concurrent semtimedop() timeouts and IPC_RMID ... If a semaphore array is removed and in parallel a sleeping task is woken up (signal or timeout, does not matter), then the woken up task does not wait until wake_up_sem_queue_do() is completed. This will cause crashes, because wake_up_sem_queue_do() will read from a stale pointer. The fix is simple: Regardless of anything, always call get_queue_result(). This function waits until wake_up_sem_queue_do() has finished it's task. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=27142 Reported-by: Yuriy Yevtukhov <yuriy@ucoz.com> Reported-by: Harald Laabs <kernel@dasr.de> Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: <stable@kernel.org> [2.6.35+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-07-25 20:57:07 -07:00
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compat.c	ipc: initialize structure memory to zero for compat functions	2010-10-27 18:03:13 -07:00
compat_mq.c	ipc: initialize structure memory to zero for compat functions	2010-10-27 18:03:13 -07:00
ipc_sysctl.c
ipcns_notifier.c
Makefile	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
mq_sysctl.c
mqueue.c	fs: icache RCU free inodes	2011-01-07 17:50:26 +11:00
msg.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
msgutil.c	userns: add a user namespace owner of ipc ns	2011-03-23 19:47:07 -07:00
namespace.c	ns proc: Add support for the ipc namespace	2011-05-10 14:35:47 -07:00
sem.c	ipc/sem.c: fix race with concurrent semtimedop() timeouts and IPC_RMID	2011-07-25 20:57:07 -07:00
shm.c	fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers	2011-07-20 20:47:59 -04:00
syscall.c	ppc64 sys_ipc breakage in 2.6.34-rc2	2010-03-22 09:57:19 -07:00
util.c	ipc,rcu: Convert call_rcu(ipc_immediate_free) to kfree_rcu()	2011-07-20 14:10:16 -07:00
util.h	userns: user namespaces: convert several capable() calls	2011-03-23 19:47:08 -07:00