From e4c4776dea9fd0295ebb3b215599d52938d6d7a3 Mon Sep 17 00:00:00 2001 From: Mike Snitzer <snitzer@redhat.com> Date: Sat, 9 Oct 2010 12:12:13 +1030 Subject: [PATCH] virtio-blk: fix request leak. Must drop reference taken by blk_make_request(). Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@kernel.org # .35.x Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- drivers/block/virtio_blk.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 2aafafca2b1374..1101e251a62934 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -202,6 +202,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) struct virtio_blk *vblk = disk->private_data; struct request *req; struct bio *bio; + int err; bio = bio_map_kern(vblk->disk->queue, id_str, VIRTIO_BLK_ID_BYTES, GFP_KERNEL); @@ -215,7 +216,10 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) } req->cmd_type = REQ_TYPE_SPECIAL; - return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false); + err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false); + blk_put_request(req); + + return err; } static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode, -- GitLab