Commit 7d788742 authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: fix double free in find_lock_delalloc_range 



We need to NULL the cached_state after freeing it, otherwise
we might free it again if find_delalloc_range doesn't find anything.

Signed-off-by: default avatarChris Mason <clm@fb.com>
cc: stable@vger.kernel.org
parent 58dfae63

fs/btrfs/extent_io.c

+1 −0
Original line number Diff line number Diff line
@@ -1693,6 +1693,7 @@ STATIC u64 find_lock_delalloc_range(struct inode *inode, 
		 * shortening the size of the delalloc range we're searching

		 */

		free_extent_state(cached_state);

		cached_state = NULL;

		if (!loops) {

			max_bytes = PAGE_CACHE_SIZE;

			loops = 1;