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 2014-08-22 09:58:22 -04:00
Родитель 5317821c08
Коммит e0b760ff71
1 изменённых файлов: 1 добавлений и 1 удалений

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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);