Re: for-next branch and blktests/srp

[Bart Van Assche <bvanassche@acm.org>]

On Thu, 2018-12-06 at 08:47 -0800, Bart Van Assche wrote:
> If I merge Jens' for-next branch with Linus' master branch, boot the
> resulting kernel in a VM and run blktests/tests/srp/002 then that test
> never finishes. The same test passes against Linus' master branch. I
> think this is a regression. The following appears in the system log if
> I run that test:
> 
> Call Trace:
> INFO: task kworker/0:1:12 blocked for more than 120 seconds.
> Call Trace:
> INFO: task ext4lazyinit:2079 blocked for more than 120 seconds.
> Call Trace:
> INFO: task fio:2151 blocked for more than 120 seconds.
> Call Trace:
> INFO: task fio:2154 blocked for more than 120 seconds.

Hi Jens,

My test results so far are as follows:
* With kernel v4.20-rc5 test srp/002 passes.
* With your for-next branch test srp/002 reports the symptoms reported in my e-mail.
* With Linus' master branch from this morning test srp/002 fails in the same way as
  your for-next branch.
* Also with Linus' master branch, test srp/002 passes if I revert the following commit:
  ffe81d45322c ("blk-mq: fix corruption with direct issue"). So it seems like that
  commit fixed one regression but introduced another regression.

Bart.