CVE-2026-43298: drm/amdgpu: Skip vcn poison irq release on VF

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: Skip vcn poison irq release on VF

VF doesn't enable VCN poison irq in VCNv2.5. Skip releasing it and avoid call trace during deinitialization.

[ 71.913601] [drm] clean up the vf2pf work item [ 71.915088] ------------[ cut here ]------------ [ 71.915092] WARNING: CPU: 3 PID: 1079 at /tmp/amd.aFkFvSQl/amd/amdgpu/amdgpuirq.c:641 amdgpuirqput+0xc6/0xe0 [amdgpu] [ 71.915355] Modules linked in: amdgpu(OE-) amddrmttmhelper(OE) amdttm(OE) amddrmbuddy(OE) amdxcp(OE) amddrmexec(OE) amdsched(OE) amdkcl(OE) drmsuballochelper drmdisplayhelper cec rccore i2calgobit video wmi binfmtmisc nlsiso88591 intelraplmsr intelraplcommon inputleds joydev serioraw machid qemufwcfg schfqcodel dmmultipath scsidhrdac scsidhemc scsidhalua efipstore iptables xtables autofs4 btrfs blake2bgeneric raid10 raid456 asyncraid6recov asyncmemcpy asyncpq asyncxor asynctx xor raid6pq libcrc32c raid1 raid0 hidgeneric crct10difpclmul crc32pclmul polyvalclmulni polyvalgeneric ghashclmulniintel usbhid 8139too sha256ssse3 sha1ssse3 hid psmouse bochs i2ci801 ahci drmvramhelper libahci i2csmbus lpcich drmttmhelper 8139cp mii ttm aesniintel cryptosimd cryptd [ 71.915484] CPU: 3 PID: 1079 Comm: rmmod Tainted: G OE 6.8.0-87-generic #88~22.04.1-Ubuntu [ 71.915489] Hardware name: Red Hat KVM/RHEL, BIOS 1.16.3-2.el95.1 04/01/2014 [ 71.915492] RIP: 0010:amdgpuirqput+0xc6/0xe0 [amdgpu] [ 71.915768] Code: 75 84 b8 ea ff ff ff eb d4 44 89 ea 48 89 de 4c 89 e7 e8 fd fc ff ff 5b 41 5c 41 5d 41 5e 5d 31 d2 31 f6 31 ff e9 55 30 3b c7 <0f> 0b eb d4 b8 fe ff ff ff eb a8 e9 b7 3b 8a 00 66 2e 0f 1f 84 00 [ 71.915771] RSP: 0018:ffffcf0800eafa30 EFLAGS: 00010246 [ 71.915775] RAX: 0000000000000000 RBX: ffff891bda4b0668 RCX: 0000000000000000 [ 71.915777] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.915779] RBP: ffffcf0800eafa50 R08: 0000000000000000 R09: 0000000000000000 [ 71.915781] R10: 0000000000000000 R11: 0000000000000000 R12: ffff891bda480000 [ 71.915782] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 71.915792] FS: 000070cff87c4c40(0000) GS:ffff893abfb80000(0000) knlGS:0000000000000000 [ 71.915795] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.915797] CR2: 00005fa13073e478 CR3: 000000010d634006 CR4: 0000000000770ef0 [ 71.915800] PKRU: 55555554 [ 71.915802] Call Trace: [ 71.915805] <TASK> [ 71.915809] vcnv25hwfini+0x19e/0x1e0 [amdgpu]