Btrfs: fix double free in find_lock_delalloc_range
authorChris Mason <clm@fb.com>
Wed, 21 May 2014 12:49:54 +0000 (05:49 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 1 Jul 2014 03:09:45 +0000 (20:09 -0700)
commit8e3ddf4c9b438953922840b3d236ac04777408e6
treef0207ce5a538ab2df992ccd03bbf3c87c030e07e
parentb124695c12cb8c4dc0f91cc18eac640f546c6456
Btrfs: fix double free in find_lock_delalloc_range

commit 7d78874273463a784759916fc3e0b4e2eb141c70 upstream.

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: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/btrfs/extent_io.c