The memory allocated by kmalloc should be checked before using it.
Signed-off-by: Shen Feng <s...@cn.fujitsu.com>
---
fs/btrfs/super.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 84c3b66..d0e8dce 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -590,6 +590,8 @@ static long btrfs_control_ioctl(struct file *file, unsigned
int cmd,
int len;
vol = kmalloc(sizeof(*vol), GFP_KERNEL);
+ if (!vol)
+ return -ENOMEM;
if (copy_from_user(vol, (void __user *)arg, sizeof(*vol))) {
ret = -EFAULT;
goto out;
--
1.6.0.6
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