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 Your message dated Thu, 28 Aug 2025 17:02:29 +0000 
 with message-id  
 and subject line Bug#1109676: fixed in linux 6.12.41-1 
 has caused the Debian Bug report #1109676, 
 regarding linux: v6.12.35..v6.12.39 fail PCI (vfio) passthrough 
 to be marked as done. 
  
 This means that you claim that the problem has been dealt with. 
 If this is not the case it is now your responsibility to reopen the 
 Bug report if necessary, and/or fix the problem forthwith. 
  
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 -- 
 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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 From: Tj  
 To: Debian Bug Tracking System  
 Subject: linux: v6.12.35..v6.12.39 fail PCI (vfio) passthrough 
 Message-ID: <175483190235.219346.13431314670443015929.reportbug@sunny> 
 X-Mailer: reportbug 12.0.0 
 Date: Sun, 10 Aug 2025 13:18:22 +0000 
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 Source: linux 
 Version: 6.12.38 
 Severity: important 
 Tags: upstream 
 X-Debbugs-Cc: tj.iam.tj@proton.me 
  
 Trixie 13.0 installer contains kernel version v6.12.38. This contains a 
 bug that breaks PCI passthrough (vfio) for VM guests. Symptoms will 
 depend on what is passed through. 
  
 On reboot into a Trixe VM that relies on passthrough it may fail in many 
 ways: 
  
 For GPUs the (PCI) gpu driver will fail to initialise the device 
  
 For storage devices and/or host bus adapters, they will fail to 
 initialise. If root file-system is on the storage device boot will fail, 
 dropping into the initialramfs shell reporting "root device X not 
 found". 
  
 For network devices there will be no interfaces. 
  
 Similar for USB and any other device passed through. 
  
 If the VM guest is using virtIO then many expected functions such as 
 keyboard may not work. 
  
  
 The problem was a backported commit in v6.12.35 that had one hunk applied in 
 the wrong 
 function. That is: 
  
 fb5873b779dd "iommu/vt-d: Restore context entry setup order for aliased 
 devices" 
  
 The fix in v6.12.40 is: 
  
 ff7ccaadb0bf "iommu/vt-d: Fix misplaced domain_attached assignment" 
  
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