Created attachment 290791 [details] lspci triggers NULL pointer dereference on AMD Renoir laptop Running Arch Linux with 5.8.0 kernel built from linux-mainline on a Dell G5 15 SE 5505 laptop with a AMD 4800H Renoir APU and 5600M discrete GPU. On a fresh install of Arch, running lspci triggers an oops and NULL pointer dereference. The oops is not triggered if the kernel is booted with amdgpu.runpm=0, so it appears to be power management-related. The oops kicks off with the following errors (full dmesg and lspci -vvv output attached): [ 93.485414] [drm] PCIE GART of 512M enabled (table at 0x0000008000000000). [ 93.485452] [drm] PSP is resuming... [ 93.514696] [drm] reserve 0x900000 from 0x800f400000 for PSP TMR [ 93.684656] amdgpu 0000:03:00.0: amdgpu: RAS: optional ras ta ucode is not available [ 93.704673] amdgpu: SMU is resuming... [ 95.835970] amdgpu: failed send message: RunBtc (58) param: 0x00000000 response 0xffffffc2 [ 95.835971] amdgpu: RunBtc failed! [ 95.836016] [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <smu> failed -62 [ 95.836053] [drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_device_ip_resume failed (-62). [ 95.851331] snd_hda_intel 0000:03:00.1: refused to change power state from D3hot to D0 [ 95.956286] snd_hda_intel 0000:03:00.1: CORB reset timeout#2, CORBRP = 65535
Appears to be resolved as of 5.8.6 or 5.8.7
Can you bisect and determine what patch fixed it?
I am now unable to reproduce even on versions <5.8.6, which I know still had the problem. So I am thinking it may have been a firmware update or something else that resolved the issue for me.