summaryrefslogtreecommitdiff
path: root/ipc/util.c
diff options
context:
space:
mode:
authorKees Cook <keescook@chromium.org>2017-07-13 00:35:22 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-13 02:26:02 +0300
commit3d3653f9732c73feb8c4addfc1cbdaa292a399fa (patch)
tree325411c382f3be2925f8718591c503d41fea7943 /ipc/util.c
parent51c23b7b7db52493d4fc869cec8c3e8fe27bfcd3 (diff)
downloadlinux-3d3653f9732c73feb8c4addfc1cbdaa292a399fa.tar.xz
ipc: move atomic_set() to where it is needed
Only after ipc_addid() has succeeded will refcounting be used, so move initialization into ipc_addid() and remove from open-coded *_alloc() routines. Link: http://lkml.kernel.org/r/20170525185107.12869-17-manfred@colorfullife.com Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/util.c')
-rw-r--r--ipc/util.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/ipc/util.c b/ipc/util.c
index 2428dd44ca97..1a2cb02467ab 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -232,6 +232,7 @@ int ipc_addid(struct ipc_ids *ids, struct kern_ipc_perm *new, int size)
idr_preload(GFP_KERNEL);
+ atomic_set(&new->refcount, 1);
spin_lock_init(&new->lock);
new->deleted = false;
rcu_read_lock();