Control: forcemerge 1130930 -1 Hi,
On Mon, Mar 23, 2026 at 03:20:44PM +0800, James French wrote: > Package: src:linux > Version: 6.12.74-2 > Severity: important > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > Removing the amdgpu module after previously disconnecting the framebuffer > results in a repeatable hung CPU and eventual kernel panic on kernels 6.12.74 > and the previous security release 6.12.73. This worked in Bookworm and has > worked in Trixie - Kernels 6.12.63 and earlier were not affected. > > >From the attached journal, this appears to be an issue with the amdgpu > >module failing to properly release the hardware. > > This bug breaks single GPU passthrough to a VM where the host may also use > the card when it is not in use. Booting with amdgpu.dc=0,or with amdgpu > blacklisted are workarounds, but do not allow the host to use the GPU when > the guest is not in use. > > I have seen this behaviour on three systems with an RX 6000 and RX 7000 > series cards. This should be the same as the already reported #1130930, merging both. It will be fixed with the next upload for trixie. But if you can, test the mentioned commit on top of 6.12.74-1 to confirm, would be great! Regards, Salvatore
