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Bug 730934 - sys-kernel/gentoo-sources-5.7.7 with [AMD/ATI] Picasso (rev c2) - BUG: kernel NULL pointer dereference, address: 0000000000000008 in amdgpu_debugfs_init
Summary: sys-kernel/gentoo-sources-5.7.7 with [AMD/ATI] Picasso (rev c2) - BUG: kernel...
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: AMD64 Linux
: Normal normal
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-07-05 15:18 UTC by Balint Dobai-Pataky
Modified: 2020-07-06 08:44 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

Attachments
emerge --info (emerge.info,3.63 KB, text/plain)
2020-07-05 15:18 UTC, Balint Dobai-Pataky 		Details
.config (config-5.7.7-gentoo,95.39 KB, text/plain)
2020-07-05 15:19 UTC, Balint Dobai-Pataky 		Details
dmesg (dmesg.5.7.7-gentoo,60.81 KB, text/plain)
2020-07-05 15:19 UTC, Balint Dobai-Pataky 		Details
config-5.4.48 (config-5.4.48,95.43 KB, text/plain)
2020-07-06 08:16 UTC, Balint Dobai-Pataky 		Details
dmesg-5.4.48 (dmesg-5.4.48,148.46 KB, text/plain)
2020-07-06 08:17 UTC, Balint Dobai-Pataky 		Details
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Description Balint Dobai-Pataky 2020-07-05 15:18:01 UTC 
amdgpu crashes on [AMD/ATI] Picasso (rev c2)


Reproducible: Always

Steps to Reproduce:
1. modprobe amdgpu
2.
3.
Actual Results:  
# modprobe amdgpu
Killed
Comment 1 Balint Dobai-Pataky 2020-07-05 15:18:38 UTC 
Created attachment 647806 [details]
emerge --info
Comment 2 Balint Dobai-Pataky 2020-07-05 15:19:22 UTC 
Created attachment 647808 [details]
.config
Comment 3 Balint Dobai-Pataky 2020-07-05 15:19:42 UTC 
Created attachment 647810 [details]
dmesg
Comment 4 Balint Dobai-Pataky 2020-07-06 08:15:43 UTC 
I was able to modprobe amdgpu with kernel 5.4.48
by changing some kernel parameters.
Comment 5 Balint Dobai-Pataky 2020-07-06 08:16:49 UTC 
Created attachment 647868 [details]
config-5.4.48
Comment 6 Balint Dobai-Pataky 2020-07-06 08:17:16 UTC 
Created attachment 647870 [details]
dmesg-5.4.48
Comment 7 Balint Dobai-Pataky 2020-07-06 08:44:22 UTC 
Could be any of the following changes 
(just in case anyone else hits this)

# CONFIG_DRM_LOAD_EDID_FIRMWARE is not set
# CONFIG_AMD_MEM_ENCRYPT is not set
CONFIG_HW_RANDOM_AMD=y
CONFIG_PINCTRL_AMD=y
# CONFIG_DRM_AMDGPU_SI is not set
# CONFIG_DRM_AMDGPU_USERPTR is not set
# CONFIG_DRM_AMDGPU_GART_DEBUGFS is not set
CONFIG_DRM_AMD_DC_DCN1_0=y
CONFIG_DRM_AMD_DC_DCN2_0=y
# CONFIG_DRM_AMD_DC_DCN2_1 is not set
CONFIG_DRM_AMD_DC_DSC_SUPPORT=y
# CONFIG_HSA_AMD is not set
# CONFIG_CALGARY_IOMMU is not set
# CONFIG_INTEL_IOMMU is not set