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Bug#1069301: linux-image-6.1.0-20-amd64: bluetooth causes kernel BUG - list_del corruption, (address)->prev is LIST_POISON2

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Hi Jeremy,

On Fri, Apr 19, 2024 at 05:37:41PM +0200, Jeremy Lainé wrote:
> Package: src:linux
> Version: 6.1.85-1
> Severity: important
> X-Debbugs-Cc: jeremy.laine@m4x.org
> 
> Dear Maintainer,
> 
> After upgrading from linux-image-6.1.0-18-amd64 to
> linux-image-6.1.0-20-amd64, bluetooth no longer works and a kernel BUG is
> visible in dmesg hinting at a memory safety issue.
> 
> It is not necessary to attempt to connect to any specific bluetooth
> device to trigger the problem, the problem arises as soon as the system
> boots.
> 
> I cannot reproduce the problem when booting back into the previous kernel
> image.

Would it be possible to do some experiments/debugging:

- Can you reproduce the issue with 6.1.85 upstream itself?

- If so can you try the current 6.1.87 (as of time of writing), does
  the issue reproduce there?

- If it's still happening, can you try to bisect the changes between
  6.1.76 and 6.1.85 to identify the culprit?

Regards,
Salvatore

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Bug#1069301: linux-image-6.1.0-20-amd64: bluetooth causes kernel BUG - list_del corruption, (address)->prev is LIST_POISON2 Salvatore Bonaccorso <carnil@debian.org> - 2024-04-19 22:10 +0200
  Bug#1069301: linux-image-6.1.0-20-amd64: bluetooth causes kernel BUG - list_del corruption, (address)->prev is LIST_POISON2 Jeremy Lainé <jeremy.laine@m4x.org> - 2024-04-20 15:10 +0200
    Bug#1069301: linux-image-6.1.0-20-amd64: bluetooth causes kernel BUG - list_del corruption, (address)->prev is LIST_POISON2 Jeremy Lainé <jeremy.laine@m4x.org> - 2024-04-21 12:20 +0200

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