On Tue, Apr 10, 2018 at 09:51:41AM -0600, Jens Axboe wrote:
> Hi Ming,
>
> Ran the above blktests on the current tree, and we end up getting
> a hang that we never recover from. There's on request perpetually
> stuck:
>
> root@dell:/sys/kernel/debug/block/nvme0n1/hctx2# cat busy
> 000000005e2b09fe {.op=READ, .cmd_flags=, .rq_flags=DONTPREP|IO_STAT|STATS, .state=in_flight, .tag=313, .internal_tag=-1}
>
> and no amount of manual running or kicking the queue will bring it
> back to life. If I run it on 'master', it works fine.
>
> Did you run blktests on your series?
Not yet.
Will take a look at it, but this seems related with driver, since
the request has been submitted to hardware already.
Thanks,
Ming
