[PATCH] Unchecked alloc_percpu() return in __create_workqueue()
__create_workqueue() not checking return of alloc_percpu()
NULL dereference was possible.
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 62d4722..e72fb64 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -315,6 +315,11 @@
return NULL;
wq->cpu_wq = alloc_percpu(struct cpu_workqueue_struct);
+ if (!wq->cpu_wq) {
+ kfree(wq);
+ return NULL;
+ }
+
wq->name = name;
/* We don't need the distraction of CPUs appearing and vanishing. */
lock_cpu_hotplug();