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.
