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AMD Ryzen 7 4700U with >>>>> Radeon Graphics >>>>> >>>>> Problem commits (introduced in v6.9-rc1): >>>>> 6296562f30b1 HID: amd_sfh: Extend MP2 register access to SFH >>>>> 2105e8e00da4 HID: amd_sfh: Improve boot time when SFH is available >>>>>> It appears amd_sfh commits 6296562f30b1 and 2105e8e00da4 correlate with >>>>> some form of memory/page corruption. >>>> Hi! From a quick search on lore it looks like Basavaraj Natikar who >>>> authored those two commits is inactive since a few days. This is totally >>>> fine, but given the nature of the problem slightly unfortunate. That's >>>> why I'm trying to raise awareness to this report by adding the >>>> subsystems maintainers, a few lists, and a few people to the list of >>>> recipients that were involved in the submission of those two patches. >>>> With a bit of luck somebody might be able to help out. Ciao, Thorsten >>>> >>>>> On my system, this typically >>>>> presents itself as a page dump followed by BTRFS errors, usually >>>>> involving "corrupt leaf" (see dmesg output below); often the BTRFS >>>>> filesystem becomes read-only afterwards. Note that the underlying NVME >>>>> disk seems fine, and the BTRFS filesystem does not actually appear to be >>>>> corrupt when booted/checked from kernels without this bug (no BTRFS >>>>> errors or I/O errors reported on non-problem kernels). >>>>> >>>>> I have no problems when I blacklist the amd_sfh module (any kernel >>>>> version), or revert both commits 6296562f30b1 and 2105e8e00da4 (on >>>>> stable, linux-6.9.y). I have no problems on any recent linux-mainline >>>>> (v6.10{,-rc*}) when reverting these two commits (in addition to >>>>> reverting 7902ec988a9a and 6856f079cd45 to successfully build the >>>>> kernel). I have had no problems with any 6.6.y, v6.7.y, or v6.8.y version. >>>>> >>>>> It is curious BTRFS always seems involved, but problems go away with >>>>> these amd_sfh commits reverted (or amd_afh disabled). >>>>> >>>>> Further notes: >>>>> >>>>> I have not specifically used the amd_sfh module for anything. As far >>>>> I've been able to determine, my system has the "Sensor Fusion Hub" mp2 >>>>> chip, but has no supported sensors/sub-devices (or I need to do >>>>> something to enable them), (or there is an error while detecting >>>>> sensors?). All logs I've checked contain something like: >>>>> >>>>> Jul 09 04:14:37 arch kernel: pcie_mp2_amd 0000:04:00.7: enabling device >>>>> (0000 -> 0002) >>>>> Jul 09 04:15:07 arch kernel: pcie_mp2_amd 0000:04:00.7: Failed to >>>>> discover, sensors not enabled is 0 >>>>> Jul 09 04:15:07 arch kernel: pcie_mp2_amd 0000:04:00.7: >>>>> amd_sfh_hid_client_init failed err -95 >>>>> >>>>> Excerpt from lshw: >>>>>            *-generic:1 UNCLAIMED >>>>>                 description: Signal processing controller >>>>>                 product: Sensor Fusion Hub >>>>>                 vendor: Advanced Micro Devices, Inc. [AMD] >>>>>                 physical id: 0.7 >>>>>                 bus info: pci@0000:04:00.7 >>>>>                 version: 00 >>>>>                 width: 32 bits >>>>>                 clock: 33MHz >>>>>                 capabilities: pm pciexpress msi msix cap_list >>>>>                 configuration: latency=0 >>>>>                 resources: memory:fe000000-fe0fffff >>>>> memory:fe4cc000-fe4cdfff >>> Could you please check with the latest version, including the patch below? >>> >>> https://lore.kernel.org/all/20240718111616.3012155-1-Basavaraj.Natikar@amd.com/ >>> >>> Thanks, >>> -- >>> Basavaraj >>> >> Hi, >> >> Unfortunately, that patch doesn't fix the issue. I do get different crashes... > Thanks for the quick testing. > > Basavaraj, was the patch from above an attempt at fixing that particular > regression or was it emerging from some other means? > > In other words: should I apply the fix even if it's still not the > correct one for Chris? yes Benjamin, Please apply fix and it looks like below crash is not related to amd_sfh driver. Thanks, -- Basavaraj > > Cheers, > Benjamin