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fix oops in fs/9p late mount failure

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if 9P ->get_sb() fails late (at root inode or root dentry
allocation), we'll hit its ->kill_sb() with NULL ->s_root

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro
2010-01-25 06:16:19 -05:00
parent 7e32b7bb73
commit 083c73c253
1 changed files with 2 additions and 1 deletions
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1
fs/9p/vfs_super.c
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@@ -188,6 +188,7 @@ static void v9fs_kill_super(struct super_block *s)
P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s); P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s);
if (s->s_root)
v9fs_dentry_release(s->s_root); /* clunk root */ v9fs_dentry_release(s->s_root); /* clunk root */
kill_anon_super(s); kill_anon_super(s);