From 95d4403889acbd98e06d41a255df76452210996a Mon Sep 17 00:00:00 2001 From: Muthukumar Ratty Date: Wed, 8 Jan 2014 09:39:49 -0700 Subject: [PATCH] block: Warn and free bio if bi_end_io is not set In bio_endio if bio doesn't have bi_end_io (should be an error case), we set bio to NULL and continue silently without freeing the bio. It would be good to have a WARN and free the bio to avoid memory leak. Signed-off-by: Muthukumar Ratty Signed-off-by: Jens Axboe --- fs/bio.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/bio.c b/fs/bio.c index 75c49a382239..9156bd1f151c 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -1770,6 +1770,15 @@ void bio_endio(struct bio *bio, int error) } else { if (bio->bi_end_io) bio->bi_end_io(bio, error); + else { + char dev_name[BDEVNAME_SIZE]; + + WARN(1, "bio_endio: bio for %s without endio\n", + bio->bi_bdev ? bdevname(bio->bi_bdev, + dev_name) : "(unknown)"); + bio_put(bio); + } + bio = NULL; } } -- 2.39.5