| Message ID | 1430057445-42944-1-git-send-email-idryomov@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 812523330a78..ec6c5c6e1ac9 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -2264,6 +2264,11 @@ static bool rbd_img_obj_end_request(struct rbd_obj_request *obj_request) result, xferred); if (!img_request->result) img_request->result = result; + /* + * Need to end I/O on the entire obj_request worth of + * bytes in case of error. + */ + xferred = obj_request->length; } /* Image object requests don't own their page array */
When we end I/O struct request with error, we need to pass obj_request->length as @nr_bytes so that the entire obj_request worth of bytes is completed. Otherwise block layer ends up confused and we trip on rbd_assert(more ^ (which == img_request->obj_request_count)); in rbd_img_obj_callback() due to more being true no matter what. We already do it in most cases but we are missing some, in particular those where we don't even get a chance to submit any obj_requests, due to an early -ENOMEM for example. A number of obj_request->xferred assignments seem to be redundant but I haven't touched any of obj_request->xferred stuff to keep this small and isolated. Cc: Alex Elder <elder@linaro.org> Cc: stable@vger.kernel.org # 3.10+ Reported-by: Shawn Edwards <lesser.evil@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com> --- drivers/block/rbd.c | 5 +++++ 1 file changed, 5 insertions(+)