On Tue, Oct 12, 2021 at 2:07 AM Kim Phillips <kim.phillips@xxxxxxx> wrote: > > 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 > <snip> > > 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 > <snip> > > 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? tzimmermann? Dave.
