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Btrfs: fix possible memory leak in scrub_setup_recheck_block()

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bbio has been malloced in btrfs_map_block() and should be
freed before leaving from the error handling cases.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
This commit is contained in:
Wei Yongjun
2012-09-02 07:44:51 -06:00
committed by Chris Mason
parent 7014cdb493
commit cf93dccea6
1 changed files with 1 additions and 0 deletions
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fs/btrfs/scrub.c
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@@ -1029,6 +1029,7 @@ static int scrub_setup_recheck_block(struct scrub_dev *sdev,
spin_lock(&sdev->stat_lock); spin_lock(&sdev->stat_lock);
sdev->stat.malloc_errors++; sdev->stat.malloc_errors++;
spin_unlock(&sdev->stat_lock); spin_unlock(&sdev->stat_lock);
kfree(bbio);
return -ENOMEM; return -ENOMEM;
} }
sblock->page_count++; sblock->page_count++;