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| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2014-12-29 15:00:18 +0200 |
|---|---|---|
| committer |   Eric Van Hensbergen <ericvh@gmail.com> | 2015-03-20 07:34:41 -0700 |
| commit | ad80492df56b4bd2d4da9990678d87b66af42f54 (patch) | |
| tree | aa02c96f89e27cb126ed0ee8344c683efb3e732c | |
| parent | 9p: remove unused variable in p9_fd_create() (diff) | |
| download | wireguard-linux-ad80492df56b4bd2d4da9990678d87b66af42f54.tar.xz wireguard-linux-ad80492df56b4bd2d4da9990678d87b66af42f54.zip | |
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 <kirill.shutemov@linux.intel.com>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/9p/vfs_file.c | 3 |
1 files changed, 2 insertions, 1 deletions
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 |