Re: [IB/srpt] c804af2c1d: last_state.test.blktests.exit_code.143

[Sagi Grimberg]

> > > Greeting,
> > >
> > > FYI, we noticed the following commit (built with gcc-9):
> > >
> > > commit: c804af2c1d3152c0cf877eeb50d60c2d49ac0cf0 ("IB/srpt: use new 
> > > shared CQ mechanism")
> > > https://git.kernel.org/cgit/linux/kernel/git/rdma/rdma.git for-next
> > >
> > >
> > > in testcase: blktests
> > > with following parameters:
> > >
> > >     test: srp-group1
> > >     ucode: 0x21
> > >
> > >
> > >
> > > on test machine: 4 threads Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz 
> > > with 4G memory
> > >
> > > caused below changes (please refer to attached dmesg/kmsg for entire 
> > > log/backtrace):
> > >
> > >
> > >
> > >
> > > If you fix the issue, kindly add following tag
> > > Reported-by: kernel test robot <rong.a.chen@xxxxxxxxx>
> > >
> > >
> > > user  :notice: [   44.688140] 2020-08-01 16:10:22 ./check srp/001 
> > > srp/002 srp/003 srp/004 srp/005 srp/006 srp/007 srp/008 srp/009 
> > > srp/010 srp/011 srp/012 srp/013 srp/015
> > > user  :notice: [   44.706657] srp/001 (Create and remove LUNs)
> > > user  :notice: [   44.718405] srp/001 (Create and remove 
> > > LUNs)                             [passed]
> > > user  :notice: [   44.729902]     runtime  ...  1.972s
> > > user  :notice: [   99.038748] IPMI BMC is not supported on this 
> > > machine, skip bmc-watchdog setup!
> > > user  :notice: [ 3699.039790] Sat Aug  1 17:11:22 UTC 2020 detected 
> > > soft_timeout
> > > user  :notice: [ 3699.060341] kill 960 /usr/bin/time -v -o 
> > > /tmp/lkp/blktests.time /lkp/lkp/src/tests/blktests
> > Yamin and Max, can you take a look at this? The SRP tests from the
> > blktests repository pass reliably with kernel version v5.7 and before.
> > With label next-20200731 from linux-next however that test triggers the
> > following hang:
>
> I will look into it.

FWIW, I ran into this as well with nvme-rdma, but it also reproduces
when I revert the shared CQ patch from nvme-rdma. Another data point
is that my tests passes with siw.