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locks: pass correct "before" pointer to locks_unlink_lock in generic_add_lease 

The argument to locks_unlink_lock can't be just any pointer to a
pointer. It must be a pointer to the fl_next field in the previous
lock in the list.

Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Jeff Layton 2014-09-09 16:00:51 -04:00
parent 66f09ca717
commit f39b913cee
1 changed files with 1 additions and 1 deletions
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2
fs/locks.c
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@ -1619,7 +1619,7 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp
smp_mb();
error = check_conflicting_open(dentry, arg);
if (error)
locks_unlink_lock(flp);
locks_unlink_lock(before);
out:
if (is_deleg)
mutex_unlock(&inode->i_mutex);