Re: blktests failures with v7.2 kernel

[Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>]

On Aug 18, 2026 / 20:50, Shin'ichiro Kawasaki wrote:
[...]
> #3: nvme/068 (new)
> 
>     When it is repeated several times, the test case nvme/068 fails with the
>     message below:
> 
>     nvme/068 (tr=rdma) (NVMe multipath delayed removal test)     [failed]
>         runtime  10.979s  ...  10.975s
>         --- tests/nvme/068.out      2026-05-21 11:44:28.070959369 +0900
>         +++ /home/shin/Blktests/blktests/results/nodev_tr_rdma/nvme/068.out.bad     2026-08-18 17:51:30.262228567 +0900
>         @@ -1,3 +1,4 @@
>          Running nvme/068
>          pwrite: Input/output error
>         +module refcount not as original
>          Test complete
> 
>     The failure is spoladic. I'm not sure if recent kernel changes triggered
>     the failure or not.
> 
>     The failure looks dependent on test nodes. It was observed with loop
>     transport and rdma transport, but was not observed with tcp transport.
>     This needs further debug.

Let me amend this part. I totally forgot that I myself chased down this failure
and posted the fix patch for blktests [*]. No need to debug further.

[*] https://lore.kernel.org/linux-nvme/20260806033146.2067433-1-shinichiro.kawasaki@wdc.com/