On Mon, Jun 15, 2026 at 04:37:39PM +0000, Dr. David Alan Gilbert wrote:
> Hi Keith,
> Thanks for the patch, alas it doesn't seem to be helping here;
> the first warn is still the same
> and it still hangs the test process hard and eventually BUGs at
>
> void blk_mq_end_request(struct request *rq, blk_status_t error)
> {
> if (blk_update_request(rq, error, blk_rq_bytes(rq)))
> BUG();
Oh, that was not expected.
What is the dma alignment requirement of your backing devices? You can
find the attribute for sda at /sys/block/sda/queue/dma_alignment. I'm
expecting 511, but just want to double check.
