[PATCH] v9fs: fix vfs inode derefrence before NULL check

[Eric Van Hensbergen <ericvh@hera.kernel.org>]

Subject: [PATCH] Fix vfs_inode dereference before NULL check
From: Eugene Teo <eugene.teo@eugeneteo.net>
Date: 1142478004 +0800

__getname, which in turn will call kmem_cache_alloc, may return NULL.

Coverity bug #977

Signed-off-by: Eugene Teo <eugene.teo@eugeneteo.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

---

 fs/9p/vfs_inode.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

f59413fce41e7979075143d1a8b1d0359c4210bf
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 3ad8455..3438e6a 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1254,6 +1254,8 @@ v9fs_vfs_mknod(struct inode *dir, struct
 		return -EINVAL;
 
 	name = __getname();
+	if (!name)
+		return -EINVAL;
 	/* build extension */
 	if (S_ISBLK(mode))
 		sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev));
-- 
1.1.0
-
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