From: Stefano Garzarella sgarzare@redhat.com
commit bb49c6fa8b845591b317b0d7afea4ae60ec7f3aa upstream.
iocb_bio_iopoll() expects iocb->private to be cleared before releasing the bio.
We already do this in blkdev_bio_end_io(), but we forgot in the recently added blkdev_bio_end_io_async().
Fixes: 54a88eb838d3 ("block: add single bio async direct IO helper") Cc: asml.silence@gmail.com Signed-off-by: Stefano Garzarella sgarzare@redhat.com Reviewed-by: Ming Lei ming.lei@redhat.com Reviewed-by: Christoph Hellwig hch@lst.de Link: https://lore.kernel.org/r/20220211090136.44471-1-sgarzare@redhat.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- block/fops.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/block/fops.c +++ b/block/fops.c @@ -289,6 +289,8 @@ static void blkdev_bio_end_io_async(stru struct kiocb *iocb = dio->iocb; ssize_t ret;
+ WRITE_ONCE(iocb->private, NULL); + if (likely(!bio->bi_status)) { ret = dio->size; iocb->ki_pos += ret;