GPU passthrough from
pre 6.12 upwards crashes my linux VMs (I have no idea what happens in windows, I don't use it) - I found the problematic kernel commit:
Problematic commit
This commit produces an instant VM crash in certain gpu utilizations (in my case a simple youtube video on brave browser) with the following report from the kernel:
Apr 11 17:28:32 pve QEMU[92966]: RAX=000018cc0e283840 RBX=0000000000000780 RCX=0000000000000780 RDX=0000000000000780
Apr 11 17:28:32 pve QEMU[92966]: RSI=000018cc0e283840 RDI=00007a71e5c0f000 RBP=00007a71ed884960 RSP=00007a71ed884960
Apr 11 17:28:32 pve QEMU[92966]: R8 =0000000000000780 R9 =0000000000000110 R10=00000000000003c0 R11=0000000000000800
Apr 11 17:28:32 pve QEMU[92966]: R12=0000000000000110 R13=00005597198ef358 R14=00007a71e5c0f000 R15=000018cc0e283840
Apr 11 17:28:32 pve QEMU[92966]: RIP=000055971ff041d0 RFL=00010202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0
Apr 11 17:28:32 pve QEMU[92966]: ES =0000 0000000000000000 ffffffff 00c00000
Apr 11 17:28:32 pve QEMU[92966]: CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA]
Apr 11 17:28:32 pve QEMU[92966]: SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA]
Apr 11 17:28:32 pve QEMU[92966]: DS =0000 0000000000000000 ffffffff 00c00000
Apr 11 17:28:32 pve QEMU[92966]: FS =0000 00007a71ed8876c0 ffffffff 00c00000
Apr 11 17:28:32 pve QEMU[92966]: GS =0000 0000000000000000 ffffffff 00c00000
Apr 11 17:28:32 pve QEMU[92966]: LDT=0000 0000000000000000 ffffffff 00c00000
Apr 11 17:28:32 pve QEMU[92966]: TR =0040 fffffe1d5342d000 00004087 00008b00 DPL=0 TSS64-busy
Apr 11 17:28:32 pve QEMU[92966]: GDT= fffffe1d5342b000 0000007f
Apr 11 17:28:32 pve QEMU[92966]: IDT= fffffe0000000000 00000fff
Apr 11 17:28:32 pve QEMU[92966]: CR0=80050033 CR2=00007a71e5c0f000 CR3=000000011ec9a004 CR4=00772ef0
Apr 11 17:28:32 pve QEMU[92966]: DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
Apr 11 17:28:32 pve QEMU[92966]: DR6=00000000ffff0ff0 DR7=0000000000000400
Apr 11 17:28:32 pve QEMU[92966]: EFER=0000000000000d01
Apr 11 17:28:32 pve QEMU[92966]: Code=cc cc cc cc 55 48 89 e5 48 89 f8 48 63 ca 48 89 f7 48 89 c6 <f3> a4 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 48 89 e5 89 55 fc f3 0f 6f 07 f3 0f 6f