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Subject[PATCH] inotify: add error handling for kmem_cache_create
Date
When kmem_cache_create fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling kmem_cache_create.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
---
fs/notify/inotify/inotify_user.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index ef32f36..0704bab 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -805,6 +805,8 @@ static int __init inotify_user_setup(void)
BUG_ON(hweight32(ALL_INOTIFY_BITS) != 21);

inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark, SLAB_PANIC);
+ if (!inotify_inode_mark_cachep)
+ return -ENOMEM;

inotify_max_queued_events = 16384;
init_user_ns.ucount_max[UCOUNT_INOTIFY_INSTANCES] = 128;
--
2.7.4
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