* Stable request: Backport d5164580a994 to 7.2.y (amdgpu NULL deref)
@ 2026-09-01 20:51 Marius Hanl
2026-09-02 22:14 ` Sasha Levin
0 siblings, 1 reply; 2+ messages in thread
From: Marius Hanl @ 2026-09-01 20:51 UTC (permalink / raw)
To: stable
Please consider the following commit for 7.2.y:
commit d5164580a994 "drm/amd/display: Skip Update HDCP Config In
Transition State"
It fixes a null deref I got today:
BUG: kernel NULL pointer dereference, address: 0000000000000000
Workqueue: events drm_fb_helper_damage_work
RIP: 0010:update_config+0x245/0x390 [amdgpu]
Call Trace:
update_psp_stream_config+0x23f/0x280 [amdgpu]
link_set_dpms_on+0x1a61/0x1b00 [amdgpu]
dce110_apply_ctx_to_hw+0x5ee/0x760 [amdgpu]
dc_commit_streams+0x487/0x650 [amdgpu]
amdgpu_dm_atomic_commit_tail+0xa13/0x4660 [amdgpu]
drm_atomic_commit+0xc3/0xf0
drm_fb_helper_damage_work+0x305/0x410
note: kworker/14:2[67932] exited with irqs disabled
I needed to restart the whole machine to recover.
Since it is a rather small patch, I thought I may ask if that is possible.
Thanks
Marius
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Stable request: Backport d5164580a994 to 7.2.y (amdgpu NULL deref)
2026-09-01 20:51 Stable request: Backport d5164580a994 to 7.2.y (amdgpu NULL deref) Marius Hanl
@ 2026-09-02 22:14 ` Sasha Levin
0 siblings, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2026-09-02 22:14 UTC (permalink / raw)
To: stable; +Cc: Sasha Levin, Marius Hanl
> Please consider the following commit for 7.2.y:
>
> commit d5164580a994 "drm/amd/display: Skip Update HDCP Config In
> Transition State"
>
> It fixes a null deref I got today:
>
> BUG: kernel NULL pointer dereference, address: 0000000000000000
Queued for 7.2, thanks.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-09-01 20:51 Stable request: Backport d5164580a994 to 7.2.y (amdgpu NULL deref) Marius Hanl
2026-09-02 22:14 ` Sasha Levin
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