On Thu, Feb 22, 2018 at 09:10:23PM +0000, Bart Van Assche wrote:

Hello Omar,

I/O hangs if I run the following command on top of kernel v4.16-rc2 + the
ib_srpt patch that adds RDMA/CM support:

srp-test/run_tests -c -d -r 10 -t 02-mq -e kyber

This does not happen with the deadline scheduler nor without a scheduler.
This test passed a few months ago. I have attached the output of the following
command to this e-mail:

(cd /sys/kernel/debug/block && grep -r .) | grep -v /poll_stat

Can you have a look?

The following 2 patch fixes one IO hang on kyber in my test on USB, could
you test it and see if your case can be fixed?

	https://marc.info/?l=linux-block&m=151940022831994&w=2

BTW, from your attached log, looks it belongs to domain token leak
issue too, so it should have been addressed by above patches.

Thanks,
Ming