[PATCH] futex: init error check
Check register_filesystem() and kern_mount() return values.
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/futex.c b/kernel/futex.c
index 7c0d0d4..d60b7f7 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1857,10 +1857,16 @@
static int __init init(void)
{
- unsigned int i;
+ int i = register_filesystem(&futex_fs_type);
- register_filesystem(&futex_fs_type);
+ if (i)
+ return i;
+
futex_mnt = kern_mount(&futex_fs_type);
+ if (IS_ERR(futex_mnt)) {
+ unregister_filesystem(&futex_fs_type);
+ return PTR_ERR(futex_mnt);
+ }
for (i = 0; i < ARRAY_SIZE(futex_queues); i++) {
INIT_LIST_HEAD(&futex_queues[i].chain);