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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>
master
Wang Shilong 2013-12-04 17:24:36 +08:00 committed by Chris Mason
parent f8675eb30f
commit 1878717b75
1 changed files with 1 additions and 1 deletions
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2
cmds-scrub.c
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@ -285,7 +285,7 @@ static void print_fs_stat(struct scrub_fs_stat *fs_stat, int raw)
static void free_history(struct scrub_file_record **last_scrubs)
{
struct scrub_file_record **l = last_scrubs;
if (!l)
if (!l || IS_ERR(l))
return;
while (*l)
free(*l++);