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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>
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1 changed files with 5 additions and 1 deletions
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@ -202,6 +202,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
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struct virtio_blk *vblk = disk->private_data;
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struct request *req;
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struct bio *bio;
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int err;
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bio = bio_map_kern(vblk->disk->queue, id_str, VIRTIO_BLK_ID_BYTES,
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GFP_KERNEL);
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@ -215,7 +216,10 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
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}
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req->cmd_type = REQ_TYPE_SPECIAL;
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return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
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err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
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blk_put_request(req);
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return err;
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}
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static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode,
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