On Tue, Oct 12, 2021 at 2:07 AM Kim Phillips kim.phillips@amd.com 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@gmail.com> > 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.