Manfred Spraul e8577d1f03 ipc/sem.c: fully initialize sem_array before making it visible ...

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>

2014-12-03 09:36:03 -08:00

..

compat_mq.c

ipc, kernel: use Linux headers

2014-06-06 16:08:14 -07:00

compat.c

ipc: resolve shadow warnings

2014-10-14 02:18:23 +02:00

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: use device_initcall

2014-04-07 16:36:11 -07:00

msg.c

ipc,msg: document volatile r_msg

2014-06-06 16:08:15 -07:00

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: fully initialize sem_array before making it visible

2014-12-03 09:36:03 -08:00

shm.c

ipc/shm: kill the historical/wrong mm->start_stack check

2014-10-14 02:18:23 +02:00

syscall.c

get rid of union semop in sys_semctl(2) arguments

2013-03-05 15:14:16 -05:00

util.c

ipc/util.c: use __seq_open_private() instead of seq_open()

2014-10-14 02:18:23 +02:00

util.h

ipc, kernel: clear whitespace

2014-06-06 16:08:14 -07:00