Btrfs-progs: fix segfault when getting scrub status
authorWang Shilong <wangsl.fnst@cn.fujitsu.com>
Wed, 4 Dec 2013 09:24:36 +0000 (17:24 +0800)
committerChris Mason <clm@fb.com>
Fri, 31 Jan 2014 16:22:12 +0000 (08:22 -0800)
commit1878717b75934952741ce1f08e23de0353b34fcb
tree223a704270a9ccacd3e3e6c099ccffb9dcc2d415
parentf8675eb30ff5757402bd9dbde51bebc61fdff67e
Btrfs-progs: fix segfault when getting scrub status

I sometimes get segfault in cmd_scrub_status(), this is because
free_history() forgot to check whether pointer address is valid,fix it.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
cmds-scrub.c