https://bugzilla.kernel.org/show_bug.cgi?id=212655

Bug ID: 212655 Summary: AMDGPU crashes when resuming from suspend when amd_iommu=on Product: Drivers Version: 2.5 Kernel Version: 5.11.10-1 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: fjfcavalcanti@gmail.com Regression: No

So, my setup is the following:

Manjaro Linux on kernel 5.11.10, but also tested on pop OS and it also happens. Mb MSI Tomahawk B450 Ryzen 5 3600 GPU Radeon RX5700 (Powercolor Red Devil)

I tried multiple kernels from 5.9 to 5.12 and all had the same issue, if I turn on iommu AMDGPU crashes during resume, and I have to hard-reset the system (I cant reset it using shutdown -r for example)

What I see in DMESG after resume is the following:

[ 36.492418] amdgpu 0000:28:00.0: amdgpu: failed send message: RunBtc (58) param: 0x00000000 response 0xffffffc2 [ 36.492420] amdgpu 0000:28:00.0: amdgpu: RunBtc failed! [ 36.492421] amdgpu 0000:28:00.0: amdgpu: Failed to setup smc hw! [ 36.492422] [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <smu> failed -62 [ 36.492515] amdgpu 0000:28:00.0: amdgpu: amdgpu_device_ip_resume failed (-62). [ 36.492516] PM: dpm_run_callback(): pci_pm_resume+0x0/0xe0 returns -62 [ 36.492520] PM: Device 0000:28:00.0 failed to resume async: error -62