blktests failures with v6.1

[Christoph Hellwig]

On Fri, Dec 23, 2022 at 04:50:42AM +0000, Shinichiro Kawasaki wrote:
>    The test case fails with NVME devices due to lockdep WARNING "possible
>    circular locking dependency detected". Reported in September [1] and solution
>    was discussed. A kernel fix patch was posted [2]. It may not be the best fix.
> 
>    [1] https://lore.kernel.org/linux-block/20220930001943.zdbvolc3gkekfmcv@shindev/
>    [2] https://lore.kernel.org/linux-nvme/20221012080318.705449-1-shinichiro.kawasaki@wdc.com/
> 
>    This test case shows different failure symptom with HDDs. Need further
>    investigation.

Yes.  Not a huge fan of the fix, but we need to look into this.
Sorry for delaying this so long, I'll try to look into this.

> #2: block/024
> 
>    Fails on slow machines. I suspect test case needs improvement.
>    Need further investigation.
> 
>    block/024 (do I/O faster than a jiffy and check iostats times) [failed]
>     runtime    ...  4.347s
>     --- tests/block/024.out     2022-12-06 20:51:41.525066605 +0900
>     +++ /home/shin/kts/kernel-test-suite/sets/blktests/log/runlog/nodev/block/024.out.bad       2022-12-07 12:51:03.610924521 +0900
>     @@ -6,5 +6,5 @@
>      read 1 s
>      write 1 s
>      read 2 s
>     -write 3 s
>     +write 4 s

Yes, I've been seeing this for a while as well.

> #3: nvme/002
> #4: nvme/016
> #5: nvme/017
> 
>    The test cases fail with similar messages below. Reported in June [3].
>    Fixes in the test cases are expected.

I think this is related to the current NQN that Hannes added.
Hannes, can you look into this?