[Bug 83486] [BSW] igt/drv_module_reload fails and causes crash in dp link teardown

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83486

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #6 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to Ville Syrjala from comment #5)
> The results are from a very old kernel. Please retest with something recent.
> 
> The stolen mem error is normal since the BIOS is buggy.

Test still fails on latest -nightly(bfdd01aa1825aa0068f9236b21362b550f6d630f)


root at x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<3>[    2.251166] [drm:i915_gem_init_stolen [i915]] *ERROR* conflict detected
with stolen region: [0x7ce00000 - 0x7ee00000]
root at x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
./drv_module_reload
unbinding /sys/class/vtconsole/vtcon1/: (M) frame buffer device
module successfully unloaded
modprobe: ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open
moddep file
'/lib/modules/3.18.0-rc7_drm-intel-nightly_bfdd01_20141208+/modules.dep.bin'
Killed
root at x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<3>[    2.251166] [drm:i915_gem_init_stolen [i915]] *ERROR* conflict detected
with stolen region: [0x7ce00000 - 0x7ee00000]
<4>[  128.816111] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic serio_raw
pcspkr i2c_i801 lpc_ich mfd_core snd_hda_controller snd_hda_codec snd_hwdep
snd_pcm snd_timer snd soundcore battery ac acpi_cpufreq option usb_wwan
usbserial button video cfbfillrect cfbimgblt cfbcopyarea [last unloaded: drm]
<4>[  128.816117] CPU: 1 PID: 4310 Comm: drv_module_relo Not tainted
3.18.0-rc7_drm-intel-nightly_bfdd01_20141208+ #2380
root at x-bsw01:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#

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