[bug report] blktests nvme/fc nvme/057 triggered kernel panic

[Daniel Wagner]

On Wed, Aug 20, 2025 at 04:20:40PM +0800, Yi Zhang wrote:
> My recent blktests testing triggered the kernel panic issue with
> kernel 6.17.0-rc2.
> Please help check it and let me know if you need any info/testing for
> it, thanks.
> 
> [1] reproducer
> stress blktests nvme/fc nvme/057

I will look into it. I've got a similar bug report from our internal QA
which I have debugged but not fixed yet.

The async handling code is not able to handle more than one in-flight
command (__nvmet_fc_send_ls_req). I was able to trigger the bug by
running nvme/044 for the FC transport in a tight loop.

This might be related here, as it seems to happen when disconnecting
from the target, similar to the stacktrace I see with nvme/044.