[Bug 83484] [BYT/BDW/BSW]igt/drv_module_reload was killed and system can't reboot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83484

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #10 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to Paulo Zanoni from comment #9)
> (In reply to Guo Jinxian from comment #8)
> > Created attachment 107913 [details]
> > dmesg
> > 
> > (In reply to Paulo Zanoni from comment #7)
> > > Created attachment 107840 [details] [review] [review] [review]
> > > Possible fix
> > > 
> > > Can you please apply this patch, retest and post the dmesg here?
> > > 
> > > I tested this on BDW, and module_reload works for me on this machine, with
> > > this patch on top of drm-intel-nightly.
> > 
> > The failure still able to reproduce with this patch on latest -nightly()
> > 
> > 
> > root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
> > ./drv_module_reload
> > unbinding /sys/class/vtconsole/vtcon1/: (M) frame buffer device
> > module successfully unloaded
> > libkmod: ERROR ../libkmod/libkmod.c:554 kmod_search_moddep: could not open
> > moddep file '/lib/modules/3.17.0_kcloud_43c5c7_20141016+/modules.dep.bin'
> 
> Does this file exist on your machine? Maybe your system setup is wrong? This
> really looks like a bug in your machine setup, not our driver.

Yes， some modules don't install by default on our Ubuntu devices. Execute
commands below then run the tests, the result passes.

apt-get install nfs-common nfs-kernel-server
/etc/init.d/client_module
mount -a 


root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./drv_module_reload
unbinding /sys/class/vtconsole/vtcon1/: (M) frame buffer device
module successfully unloaded
module successfully loaded again
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# echo $?
0


[root at x-bsw01 tests]#./drv_module_reload
unbinding /sys/class/vtconsole/vtcon1/: (M) frame buffer device
module successfully unloaded
module successfully loaded again

[root at x-bsw01 tests]# echo $?
0

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