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Bug#1106411: linux-image-6.12.27-amd64: kernel NULL pointer dereference in bmc150_accel_core

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Hi Kim,

On Fri, May 30, 2025 at 07:42:12PM +0200, Kim Alvefur wrote:
> On Sun, May 25, 2025 at 04:50:14PM +0200, Salvatore Bonaccorso wrote:
> > Can you please test 6.12.29-1 from unstable (and which should migrate
> > soon to trixie)?
> > 
> > If you can reproduce the issue, can you please post the full kernel
> > log once the issue has happened, so we get the full context (The
> > previous log is capped).
> 
> Output of `journalctl --boot --dmseg` from 6.12.29 attached.
> 
> So far it seems to happen on every boot, between unlocking LUKS and the
> login manager starting.
> 
> I wonder if this is related to another symptom this machine has, where
> it fails to complete suspend and goes into a state where the only action
> that has any effect is a long-press of the power button to turn it off.

Thanks for providing the full log, going through it.

One additional preliminary question, since I missed to ask it in the
earlier reply: Is this a regression you are seeing when updating to
6.12.27-1 (and later)? If so can you pinpoint the Debian revision
where you first saw this happening?

In case we have a regression, would you be able to bisect the
respective upstream stable versions to pinpoint the breaking commit,
which would be helpful for the upstream report?

Regards,
Salvatore

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Bug#1106411: linux-image-6.12.27-amd64: kernel NULL pointer dereference in bmc150_accel_core Kim Alvefur <zash@zash.se> - 2025-05-24 17:00 +0200
  Processed: Re: Bug#1106411: linux-image-6.12.27-amd64: kernel  NULL pointer dereference in bmc150_accel_core "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-05-25 17:00 +0200
  Bug#1106411: linux-image-6.12.27-amd64: kernel NULL pointer dereference in bmc150_accel_core Salvatore Bonaccorso <carnil@debian.org> - 2025-05-25 17:00 +0200
  Bug#1106411: linux-image-6.12.27-amd64: kernel NULL pointer dereference in bmc150_accel_core Salvatore Bonaccorso <carnil@debian.org> - 2025-05-31 21:00 +0200
  Processed: Re: Bug#1106411: linux-image-6.12.27-amd64: kernel  NULL pointer dereference in bmc150_accel_core "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-05-31 21:00 +0200
  Bug#1106411: kernel NULL pointer dereference in bmc150_accel_core / RIP: 0010:bmc150_accel_set_interrupt+0x68/0x120 [bmc150_accel_core] Kim Alvefur <zash@zash.se> - 2025-06-01 00:10 +0200
    Bug#1106411: kernel NULL pointer dereference in bmc150_accel_core / RIP: 0010:bmc150_accel_set_interrupt+0x68/0x120 [bmc150_accel_core] Salvatore Bonaccorso <carnil@debian.org> - 2025-07-17 23:20 +0200
  Bug#1106411: linux-image-6.12.27-amd64: kernel NULL pointer dereference in bmc150_accel_core Salvatore Bonaccorso <carnil@debian.org> - 2025-06-04 09:40 +0200
    Bug#1106411: linux-image-6.12.27-amd64: kernel NULL pointer dereference in bmc150_accel_core Kim Alvefur <zash@zash.se> - 2025-06-04 13:10 +0200

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