[Bug 89568] [SNB bisected]igt/pm_rpm/universal-planes unable to stop and cause system unable to reboot.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89568

Ding Heng <hengx.ding at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #5 from Ding Heng <hengx.ding at intel.com> ---
(In reply to Paulo Zanoni from comment #4)
> (In reply to Ding Heng from comment #2)
> > (In reply to Chris Wilson from comment #1)
> > > Can you get the netsconsole output?
> > 
> > [root at glody-pc ~]# nc -l -u -4 -p 30000
> > [  634.671572] netpoll: netconsole: local port 6666
> > [  634.671613] netpoll: netconsole: local IPv4 address 10.239.156.111
> > [  634.671652] netpoll: netconsole: interface 'enp0s25'
> > [  634.671674] netpoll: netconsole: remote port 30000
> > [  634.671696] netpoll: netconsole: remote IPv4 address 10.239.156.13
> > [  634.671723] netpoll: netconsole: remote ethernet address 6c:3b:e5:41:24:d7
> > [  634.671792] console [netcon0] enabled
> > [  634.671821] netconsole: network logging started
> > [  660.482156] pm_rpm: executing
> > [  661.717822] pm_rpm: starting subtest universal-planes
> > [  701.152195] systemd[1]: Unit rpcbind.service entered failed state.
> > [  701.152521] systemd[1]: Unit mcelog.service entered failed state.
> 
> I think there's a way to get all the debug output on netconsole, even those
> that are printed by drm.debug=0xe (which you should be using).

output on device under test:
[root at x-hnr9 ~]# modprobe netconsole
netconsole=6666 at 10.239.156.63/enp0s25,30000 at 10.239.156.13/6c:3b:e5:41:24:d7
[root at x-hnr9 ~]# modprobe ixgbe
[root at x-hnr9 ~]# rmmod ixgbe
[root at x-hnr9 ~]# lsmod |grep ixgbe
[root at x-hnr9 ~]# cat /proc/cmdline
BOOT_IMAGE=kernels//nightly_parents/2015_03_12/drm-intel-next-queued/3c0401df292f3cdf60435342a05bee3efb099ca0/bzImage_x86_64
root=/dev/sda3 drm.debug=0xe hostname=x-hnr9
modules_path=kernels//nightly_parents/2015_03_12/drm-intel-next-queued/3c0401df292f3cdf60435342a05bee3efb099ca0/modules_x86_64/lib/modules/4.0.0-rc3_drm-intel-next-queued_3c0401_20150312+
kexec_jump_back_entry=0x0a12326a
[root at x-hnr9 ~]# cd /GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests/
(reverse-i-search)`km': ./^Cs_universal_plane --run-subtest
cursor-fb-leak-pipe-B
[root at x-hnr9 tests]# ./pm_rpm --run-subtest universal-planes
IGT-Version: 1.10-ga172676 (x86_64) (Linux:
4.0.0-rc3_drm-intel-next-queued_3c0401_20150312+ x86_64)
Runtime PM support: 1
PC8 residency support: 0

^C^C^C

^C^C^C^C

At this moment, I was still able to access this machine through ssh tools, then
I tried to reboot on the other ssh connection, I got following message and ssh
service is gone:

Failed to issue method call: Did not receive a reply. Possible causes include:
the remote application did not send a reply, the message bus security policy
blocked the reply, the reply timeout expired, or the network connection was
broken.
Warning: Unit file of reboot.target changed on disk, 'systemctl --system
daemon-reload' recommended.

Then I checked the netconsole output, it was still look similar to comment 2:

[root at glody-pc ~]# nc -l -u -4 -p 30000
[  141.358408] dca service started, version 1.12.1
[  141.389118] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version
4.0.1-k
[  141.389189] ixgbe: Copyright (c) 1999-2014 Intel Corporation.
[  207.887512] pm_rpm: executing
[  209.094113] pm_rpm: starting subtest universal-planes
[  283.107752] NET: Registered protocol family 10
[  283.109111] IPv6: ADDRCONF(NETDEV_UP): enp37s0u1u4: link is not ready
[  485.804193] systemd[1]: Unit rpcbind.service entered failed state.
[  485.805403] systemd[1]: Unit mcelog.service entered failed state.

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