From c0291a05f8e6a72c9807b0e2a369ee82bec659c3 Mon Sep 17 00:00:00 2001
From: Eugene Teo <eugene.teo@eugeneteo.net>
Date: Sat, 25 Mar 2006 03:07:27 -0800
Subject: [PATCH] v9fs: fix vfs_inode dereference before NULL check

__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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 fs/9p/vfs_inode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index dc67f83d0da..4cbfb714c6e 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1244,6 +1244,8 @@ v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
 		return -EINVAL;
 
 	name = __getname();
+	if (!name)
+		return -ENOMEM;
 	/* build extension */
 	if (S_ISBLK(mode))
 		sprintf(name, "b %u %u", MAJOR(rdev), MINOR(rdev));
-- 
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