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Bug#1107521: linux-image-6.12.27+bpo-amd64: ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64

Cross-posted to 2 groups.

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After several suspends and plenty of uptime on battery, I'm fairly
confident that linux-image-6.12.12+bpo-amd64_6.12.12-1~bpo12+1_amd64 paired
with firmware-atheros_20250410-2~bpo12+1_all is stable. There are only 2
commits to the ath12k driver between 6.12.12 and 6.12.22:

44de00e8bc8f wifi: ath12k: fix handling of 6 GHz rules
425f6a38173b wifi: ath12k: fix tx power, max reg power update to firmware

So, I'll next test 6.12.22 with reverts of one or both of these.

On Wed, Jun 11, 2025 at 9:50 PM Matt Mower <mowerm@gmail.com> wrote:

> For what it's worth, if you check the replies after the original report,
> you can see that I tested 6.12.32 as well as 6.12.27 with ath12k patches
> reverted. Unfortunately, I can reproduce it in 6.12.22 now as well; the bug
> only seems to appear when my laptop is not connected to a power source. I
> reproduce it most often when the device shuts down or goes to sleep, at
> which point it freezes completely. I snapped a picture when I saw more
> debugging information that normal on the screen (attached). I've tried
> downgrading to firmware-atheros_20250410-2~bpo12+1_all as well (dmesg
> reports firmware fw_version 0x100301e1 fw_build_timestamp 2023-12-06
> 04:05), and that didn't resolve the issue.
>
> I'm continuing to test older kernel and firmware versions until I find
> something stable.
>
> On Wed, Jun 11, 2025 at 1:49 PM Uwe Kleine-König <
> u.kleine-koenig@baylibre.com> wrote:
>
>> Control: tag -1 +moreinfo
>>
>> Hello Matt,
>>
>> On Sun, Jun 08, 2025 at 08:00:43AM -0700, Matt Mower wrote:
>> > After updating from linux-image-6.12.22+bpo-amd64 to
>> linux-image-6.12.27+bpo-
>> > amd64, I am seeing lots of IO_PAGE_FAULT events for device ath12k_pci,
>> and
>> > twice my system has completely frozen.
>>
>> There are a few ath12k patches between 6.12.22 and 6.12.27 and a few
>> more in later stable releases in the 6.12.x series. Can you please test
>> on the latest 6.12 kernel? There is currently no backport kernel for
>> that version, but in my experience the kernel from testing should
>> install fine on a stable box.
>>
>> If the issue also happens on 6.12.32, someone has to bring that forward
>> to upstream's attention.
>>
>> Best regards
>> Uwe
>>
>

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Bug#1107521: linux-image-6.12.27+bpo-amd64: ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 Matt Mower <mowerm@gmail.com> - 2025-06-08 17:10 +0200
  Processed: Re: Bug#1107521: linux-image-6.12.27+bpo-amd64:  ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-06-11 23:00 +0200
  Bug#1107521: linux-image-6.12.27+bpo-amd64: ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 Uwe Kleine-König <u.kleine-koenig@baylibre.com> - 2025-06-11 23:00 +0200
  Bug#1107521: linux-image-6.12.27+bpo-amd64: ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 Matt Mower <mowerm@gmail.com> - 2025-06-12 22:50 +0200
    Bug#1107521: linux-image-6.12.27+bpo-amd64: ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 Salvatore Bonaccorso <carnil@debian.org> - 2025-06-14 21:40 +0200
  Processed: Re: Bug#1107521: linux-image-6.12.27+bpo-amd64:  ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-06-16 08:30 +0200
  Processed: Re: Bug#1107521: linux-image-6.12.27+bpo-amd64:  ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-06-18 11:20 +0200
  Bug#1107521: linux-image-6.12.27+bpo-amd64: ath12k_pci errors and eventual kernel panic starting with linux-image-6.12.27+bpo-amd64 Matt Mower <mowerm@gmail.com> - 2025-06-25 07:20 +0200
  Bug#1107521: ath12k_pci errors and loss of connectivity in 6.12.y branch Robin Murphy <robin.murphy@arm.com> - 2025-06-27 12:40 +0200
  Bug#1107521: ath12k_pci errors and loss of connectivity in 6.12.y branch Matt Mower <mowerm@gmail.com> - 2025-07-02 07:30 +0200
  Bug#1107521: ath12k_pci errors and loss of connectivity in 6.12.y branch Matt Mower <mowerm@gmail.com> - 2025-07-02 17:00 +0200
  Bug#1107521: Info received (ath12k_pci errors and loss of connectivity in 6.12.y branch) Matt Mower <mowerm@gmail.com> - 2025-08-17 18:40 +0200

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