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Bug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics

Started bySalvatore Bonaccorso <carnil@debian.org>
First post2025-07-23 23:50 +0200
Last post2025-07-24 15:30 +0200
Articles 3 — 2 participants

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  Bug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics Salvatore Bonaccorso <carnil@debian.org> - 2025-07-23 23:50 +0200
    Processed: Re: Bug#1109676: linux-image-6.12.35+deb13-amd64:  Regression in host kernel breaks VM VFIO graphics "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-07-23 23:50 +0200
    Bug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics Salvatore Bonaccorso <carnil@debian.org> - 2025-07-24 15:30 +0200

#88525 — Bug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics

FromSalvatore Bonaccorso <carnil@debian.org>
Date2025-07-23 23:50 +0200
SubjectBug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics
Message-ID<LbPvz-29de-3@gated-at.bofh.it>
Control: tags -1 - moreinfo
Control: forwarded -1 https://lore.kernel.org/linux-iommu/721D44AF820A4FEB+722679cb-2226-4287-8835-9251ad69a1ac@bbaa.fun/T

Hi,

On Wed, Jul 23, 2025 at 08:00:57PM +0000, Jonathan Howard wrote:
> I spent time figuring out from it main patch was initially working.
> Just as I read the recommended upstream report method while composing an
> email; I looked on the maintainer list.
> 
> Spotted related post. Same regression bisect.
> 
> https://lore.kernel.org/linux-iommu/721D44AF820A4FEB+722679cb-2226-4287-8835-9251ad69a1ac@bbaa.fun/T
> 
> Can confirm the patch correction fixes my regression.
> Just waiting for queue.

Thank you! So it should land in 6.12.y upstream soonish. Right now we
might defer a fix to the first trixie point release or the first DSA.

Regards,
Salvatore

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#88526 — Processed: Re: Bug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics

From"Debian Bug Tracking System" <owner@bugs.debian.org>
Date2025-07-23 23:50 +0200
SubjectProcessed: Re: Bug#1109676: linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics
Message-ID<LbPvz-29de-7@gated-at.bofh.it>
In reply to#88525
Processing control commands:

> tags -1 - moreinfo
Bug #1109676 [src:linux] linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics
Ignoring request to alter tags of bug #1109676 to the same tags previously set
> forwarded -1 https://lore.kernel.org/linux-iommu/721D44AF820A4FEB+722679cb-2226-4287-8835-9251ad69a1ac@bbaa.fun/T
Bug #1109676 [src:linux] linux-image-6.12.35+deb13-amd64: Regression in host kernel breaks VM VFIO graphics
Ignoring request to change the forwarded-to-address of bug#1109676 to the same value

-- 
1109676: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1109676
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#88534

FromSalvatore Bonaccorso <carnil@debian.org>
Date2025-07-24 15:30 +0200
Message-ID<Lc4bf-2kmN-13@gated-at.bofh.it>
In reply to#88525
Hi

On Wed, Jul 23, 2025 at 11:38:45PM +0200, Salvatore Bonaccorso wrote:
> Control: tags -1 - moreinfo
> Control: forwarded -1 https://lore.kernel.org/linux-iommu/721D44AF820A4FEB+722679cb-2226-4287-8835-9251ad69a1ac@bbaa.fun/T
> 
> Hi,
> 
> On Wed, Jul 23, 2025 at 08:00:57PM +0000, Jonathan Howard wrote:
> > I spent time figuring out from it main patch was initially working.
> > Just as I read the recommended upstream report method while composing an
> > email; I looked on the maintainer list.
> > 
> > Spotted related post. Same regression bisect.
> > 
> > https://lore.kernel.org/linux-iommu/721D44AF820A4FEB+722679cb-2226-4287-8835-9251ad69a1ac@bbaa.fun/T
> > 
> > Can confirm the patch correction fixes my regression.
> > Just waiting for queue.
> 
> Thank you! So it should land in 6.12.y upstream soonish. Right now we
> might defer a fix to the first trixie point release or the first DSA.

FTR, this fix has been included in the 6.12.40 release of today.

Regards,
Salvaotre

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