From 28ba5aaec4a0b118214d2f075456f288f0b67648 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 28 Mar 2014 02:15:02 -0400 Subject: [PATCH] dm thin: fix dangling bio in process_deferred_bios error path commit fe76cd88e654124d1431bb662a0fc6e99ca811a5 upstream. If unable to ensure_next_mapping() we must add the current bio, which was removed from the @bios list via bio_list_pop, back to the deferred_bios list before all the remaining @bios. Signed-off-by: Mike Snitzer Acked-by: Joe Thornber Signed-off-by: Ben Hutchings --- drivers/md/dm-thin.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 2c9dd2c94889..80f8bd5e38ee 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1298,9 +1298,9 @@ static void process_deferred_bios(struct pool *pool) */ if (ensure_next_mapping(pool)) { spin_lock_irqsave(&pool->lock, flags); + bio_list_add(&pool->deferred_bios, bio); bio_list_merge(&pool->deferred_bios, &bios); spin_unlock_irqrestore(&pool->lock, flags); - break; } process_bio(tc, bio); -- 2.39.2