btrfs: fix memory leak during RAID 5/6 device replacement

Scott Talbert · kdave · commit 4673272f43ae · 2016-05-16T10:17:58.000+02:00
A 'struct bio' is allocated in scrub_missing_raid56_pages(), but it was never
freed anywhere.

Signed-off-by: Scott Talbert &lt;scott.talbert@hgst.com&gt;
Signed-off-by: David Sterba &lt;dsterba@suse.com&gt;
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
@@ -2127,6 +2127,8 @@ static void scrub_missing_raid56_end_io(struct bio *bio)
 	if (bio->bi_error)
 		sblock->no_io_error_seen = 0;
 
+	bio_put(bio);
+
 	btrfs_queue_work(fs_info->scrub_workers, &sblock->work);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -2127,6 +2127,8 @@ static void scrub_missing_raid56_end_io(struct bio *bio)`
`2127`	`2127`	`if (bio->bi_error)`
`2128`	`2128`	`sblock->no_io_error_seen = 0;`
`2129`	`2129`
	`2130`	`+ bio_put(bio);`
	`2131`	`+`
`2130`	`2132`	`btrfs_queue_work(fs_info->scrub_workers, &sblock->work);`
`2131`	`2133`	`}`
`2132`	`2134`