From ad80492df56b4bd2d4da9990678d87b66af42f54 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Mon, 29 Dec 2014 15:00:18 +0200 Subject: [PATCH] 9p: fix error handling in v9fs_file_do_lock p9_client_lock_dotl() doesn't set status if p9_client_rpc() fails. It can lead to 'default:' case in switch below and kernel crashes. Let's bypass the switch if p9_client_lock_dotl() fails. Signed-off-by: Kirill A. Shutemov Signed-off-by: Dominique Martinet Signed-off-by: Eric Van Hensbergen --- fs/9p/vfs_file.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index b40133796b87..8d29e1e03dfa 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -194,7 +194,7 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl) for (;;) { res = p9_client_lock_dotl(fid, &flock, &status); if (res < 0) - break; + goto out_unlock; if (status != P9_LOCK_BLOCKED) break; @@ -220,6 +220,7 @@ static int v9fs_file_do_lock(struct file *filp, int cmd, struct file_lock *fl) BUG(); } +out_unlock: /* * incase server returned error for lock request, revert * it locally -- 2.30.2