Bug 193341
| Summary: | AMDGPU: kernel NULL pointer dereferenced with hybrid graphics | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | stefan.kohek |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | alexdeucher, luya, mpiazza |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 4.9.6 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
Kernel config, output of dmesh (with stack trace), output of lspci
possible fix possible fix Dmesg of 4.10.1-1-ARCH #1 SMP PREEMPT Sun Feb 26 21:08:53 UTC 2017 x86_64 GNU/Linux |
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Sorry, I mean https://bugs.freedesktop.org/show_bug.cgi?id=99387 . Created attachment 253281 [details]
possible fix
This patch should fix the crash.
Attached logs about amdgpu kernel oops on hybrid gpu (KABINI+HAINAN)
4.9.9: https://bugs.freedesktop.org/show_bug.cgi?id=99387#c13
4.9.2: https://bugs.freedesktop.org/show_bug.cgi?id=99387#c14
Created attachment 254699 [details]
possible fix
This should fix it (along with the previous patch).
Greetings, I am the original reported on Freedesktop bug report. I have a similar hardware in this case Kaveri and R5 M230 (Hainan or Jet Pro). The fix as mentioned on comment #5 is working fine. Created attachment 254989 [details]
Dmesg of 4.10.1-1-ARCH #1 SMP PREEMPT Sun Feb 26 21:08:53 UTC 2017 x86_64 GNU/Linux
I'm not sure if all attached fixes were merged to kernel 4.10.1, but now I get different error (when trying to use the discrete GPU).
Make sure your kernel has this patch: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c10c8f7c27103bd7ac02d041d9d6e97296d48fc1 With this path is working fine. Thank you. Shader heavy games are now rendering twice as fast. |
Created attachment 253261 [details] Kernel config, output of dmesh (with stack trace), output of lspci The driver crashes when AMDGPU is used with a combination of R5 M230 and MULLINS. The driver work with MULLINS OK, when discrete GPU (01:00.0 R5 M230) is disabled (in bios). Kernel: Linux LenovoPC 4.9.6-1-ARCH #1 SMP PREEMPT Thu Jan 26 09:22:26 CET 2017 x86_64 GNU/Linux Relevant config: CONFIG_DRM_AMDGPU=m CONFIG_DRM_AMDGPU_SI=y CONFIG_DRM_AMDGPU_CIK=y CONFIG_DRM_AMDGPU_USERPTR=y I understand this is experimental case. Anyway, maybe somebody will fix it. This case work OK with RADEON driver (even offloading).