tree f2463b201b1785fd6af3cdd52bcf932267a85e92
parent 15d36fecd0bdc7510b70a0e5ec6671140b3fce0c
author Davidlohr Bueso <dave@stgolabs.net> 1532648239 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1532659083 -0700

ipc/sem.c: prevent queue.status tearing in semop

In order for load/store tearing prevention to work, _all_ accesses to
the variable in question need to be done around READ and WRITE_ONCE()
macros.  Ensure everyone does so for q->status variable for
semtimedop().

Link: http://lkml.kernel.org/r/20180717052654.676-1-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>