Summary: | 7870 radeon crashes after kernel msg drm:radeon_mn_invalidate_range_start | ||||||||||
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Product: | DRI | Reporter: | JATothrim <jarmo.tiitto> | ||||||||
Component: | DRM/Radeon | Assignee: | Default DRI bug account <dri-devel> | ||||||||
Status: | RESOLVED FIXED | QA Contact: | |||||||||
Severity: | major | ||||||||||
Priority: | medium | ||||||||||
Version: | unspecified | ||||||||||
Hardware: | x86-64 (AMD64) | ||||||||||
OS: | Linux (All) | ||||||||||
Whiteboard: | |||||||||||
i915 platform: | i915 features: | ||||||||||
Attachments: |
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Description
JATothrim
2015-08-02 03:36:12 UTC
Please attach your xorg log and dmesg output. Created attachment 117497 [details]
dmesg log
Created attachment 117498 [details]
Xorg.0.log
It was hard to catch the dmesg and Xorg log because soon as I close the Dolphin emu the system hard freezes --> no data synced.
Note that after the kernel prints those last lines the the bug is just triggered - after I close the Dolphin main window does the crash occurs.
If some one is interested I have kdump data of the system. Thanks to my kexec dump kernel. :)
Created attachment 117555 [details] [review] Maybe fix? I searched Vanilla kernel git logs/patches and found this patch. I hope it could fix the kernel crash on kernel 3.18.x series. I'm testing the patch now. I did more research and I was able to capture full kernel crash dump. Debugging the crashdump I found that The kernel dies at kernel version v3.18.19 in src lines: drivers/gpu/drm/radeon/radeon_mn.c:75 or drivers/gpu/drm/radeon/radeon_mn.c:76 on to NULL ptr dereference. At both code lines the kernel tries to lock a mutex apparently. I don't know exactly which one fails as I'm no expert debugging x86-64 assembly. Well have you tested this with the current upstream kernel? E.g. 4.1 or a recent rc of 4.2? That's usually the first thing you should to to figure out if newer kernels are already fixed. (In reply to Christian König from comment #6) > Well have you tested this with the current upstream kernel? E.g. 4.1 or a > recent rc of 4.2? > > That's usually the first thing you should to to figure out if newer kernels > are already fixed. Phew. I finally managed to compile/test newer kernel v4.2 and this bug is fixed! :) Yay! My tip for radeon 7870 owners: if your screen freezes and turns into a weird rainbow mess try kernel v4.2. |
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