Hi, On 10/5/21 1:10 PM, Kim Phillips wrote:
Hi, I occasionally see the below trace with Linus' master on an AMD Milan system: [ 25.657322] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 25.665097] #PF: supervisor instruction fetch in kernel mode [ 25.671448] #PF: error_code(0x0010) - not-present page
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That bisection led to this commit: commit aae74ff9caa8de9a45ae2e46068c417817392a26 Author: Ainux <ainux.wang@xxxxxxxxx> Date: Wed May 26 19:15:15 2021 +0800 drm/ast: Add detect function support
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I confirmed that if I revert it from v5.15-rc4 (after reverting its dependent 572994bf18ff "drm/ast: Zero is missing in detect function"), the problem goes away. Full .config, dmesg attached. I can test any possible fixes...
Ping - if no fixes are in the works, can the offending commit(s) be reverted? Thanks, Kim
