Hi,
I've upgraded from kernel 6.12.58 to 6.12.59 and now I see the following
kernel warning:
```
[ 13.845543] [ T1126] [drm] amdgpu kernel modesetting enabled.
[ 13.845639] [ T1126] ------------[ cut here ]------------
[ 13.845640] [ T1126] Unpatched return thunk in use. This should not
happen!
[ 13.845641] [ T1126] WARNING: CPU: 9 PID: 1126 at
arch/x86/kernel/cpu/bugs.c:3484 __warn_thunk+0x2b/0x40
[ 13.845646] [ T1126] Modules linked in: amdgpu(+) hwmon_vid kvm_amd
kvm mfd_core drm_buddy drm_suballoc_helper drm_exec i2c_algo_bit
irqbypass gigabyte_wmi drm_display_helper r8169 gpu_sched amdxcp
drm_ttm_helper ttm i2c_piix4 e1000e i2c_smbus video tpm_crb backlight
tpm_tis gpio_amdpt gpio_generic tpm_tis_core crct10dif_pclmul
crc32_pclmul polyval_clmulni polyval_generic ghash_clmulni_intel
sha512_ssse3 sha256_ssse3 sha1_ssse3 aesni_intel crypto_simd 8250
8250_base serial_mctrl_gpio serial_base dm_mirror dm_region_hash dm_log
[ 13.845673] [ T1126] CPU: 9 UID: 0 PID: 1126 Comm: (udev-worker)
Tainted: G W 6.12.59-gentoo #1
[ 13.845676] [ T1126] Tainted: [W]=WARN
[ 13.845677] [ T1126] Hardware name: Gigabyte Technology Co., Ltd.
B450M DS3H/B450M DS3H-CF, BIOS F67 10/28/2025
[ 13.845678] [ T1126] RIP: 0010:__warn_thunk+0x2b/0x40
[ 13.845680] [ T1126] Code: 0f 1f 00 0f 1f 44 00 00 80 3d 6a a8 5d 02
00 74 06 e9 84 91 68 01 cc 48 c7 c7 4a be c2 b2 c6 05 54 a8 5d 02 01 e8
45 6a 08 00 <0f> 0b e9 69 91 68 01 cc cc cc cc cc cc cc cc cc cc cc cc
cc cc 90
[ 13.845682] [ T1126] RSP: 0018:ffffce08020ef820 EFLAGS: 00010246
[ 13.845683] [ T1126] RAX: a19421c8220e9f00 RBX: 0000000000008000 RCX:
a19421c8220e9f00
[ 13.845685] [ T1126] RDX: 00000000ffffdfff RSI: 0000000000000002 RDI:
ffffffffb3489cc0
[ 13.845686] [ T1126] RBP: ffffce08020ef870 R08: 0000000000001fff R09:
ffffffffb3459c60
[ 13.845686] [ T1126] R10: 0000000000005ffd R11: 00000000ffffdfff R12:
ffff890d01612810
[ 13.845687] [ T1126] R13: ffffce08020ef8d0 R14: ffff890d01695000 R15:
ffffce08020ef8e0
[ 13.845688] [ T1126] FS: 00007f88ab8e8840(0000)
GS:ffff89140e080000(0000) knlGS:0000000000000000
[ 13.845690] [ T1126] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 13.845691] [ T1126] CR2: 00007f88ab89c000 CR3: 000000010c430000 CR4:
0000000000b50ef0
[ 13.845692] [ T1126] Call Trace:
[ 13.845694] [ T1126] <TASK>
[ 13.845695] [ T1126] warn_thunk_thunk+0x1a/0x30
[ 13.845698] [ T1126] amdgpu_acpi_detect+0x2e1/0xbe0 [amdgpu]
[ 13.846160] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846163] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846165] [ T1126] ? _printk+0x5d/0x80
[ 13.846167] [ T1126] ? __kmem_cache_create_args+0xfe/0x3a0
[ 13.846169] [ T1126] ? __se_sys_finit_module+0x29e/0x460
[ 13.846171] [ T1126] init_module+0xf3/0xff0 [amdgpu]
[ 13.846493] [ T1126] ? ____versions+0x31f7af765d10/0x31f7af765d10
[amdgpu]
[ 13.846772] [ T1126] ? do_one_initcall+0x14f/0x3d0
[ 13.846774] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846776] [ T1126] ? kernfs_activate+0x53/0x240
[ 13.846778] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846779] [ T1126] ? update_load_avg+0x1bb/0x7a0
[ 13.846781] [ T1126] ? enqueue_entity+0x258/0x590
[ 13.846783] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846784] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846786] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846787] [ T1126] ? update_load_avg+0x1bb/0x7a0
[ 13.846789] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846790] [ T1126] ? psi_task_switch+0x238/0x310
[ 13.846792] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846793] [ T1126] ? __switch_to+0x174/0x5d0
[ 13.846795] [ T1126] ? __switch_to_asm+0x3d/0x70
[ 13.846797] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846798] [ T1126] ? __schedule+0x4c2/0x1370
[ 13.846800] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846801] [ T1126] ? free_large_kmalloc+0x8c/0xb0
[ 13.846803] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846805] [ T1126] ? module_decompress_cleanup+0xac/0xd0
[ 13.846807] [ T1126] ? do_init_module+0x5f/0x5d0
[ 13.846809] [ T1126] ? srso_alias_return_thunk+0x5/0xfbef5
[ 13.846810] [ T1126] ? __kmalloc_cache_noprof+0x15a/0x280
[ 13.846811] [ T1126] ? __se_sys_finit_module+0x29e/0x460
[ 13.846813] [ T1126] do_init_module+0x9d/0x5d0
[ 13.846815] [ T1126] __se_sys_finit_module+0x29e/0x460
[ 13.846817] [ T1126] do_syscall_64+0x54/0xf0
[ 13.846819] [ T1126] ? irqentry_exit_to_user_mode+0x8c/0xb0
[ 13.846821] [ T1126] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 13.846823] [ T1126] RIP: 0033:0x7f88abd42d4d
[ 13.846825] [ T1126] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3
0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c
24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8b 30 0b 00 f7 d8 64
89 01 48
[ 13.846826] [ T1126] RSP: 002b:00007fff99c23488 EFLAGS: 00000246
ORIG_RAX: 0000000000000139
[ 13.846828] [ T1126] RAX: ffffffffffffffda RBX: 0000561cd4434e40 RCX:
00007f88abd42d4d
[ 13.846829] [ T1126] RDX: 0000000000000004 RSI: 00007f88ac2243af RDI:
000000000000003d
[ 13.846830] [ T1126] RBP: 0000000000000004 R08: 0000000000000000 R09:
0000561cd4387160
[ 13.846831] [ T1126] R10: 0000000000000000 R11: 0000000000000246 R12:
0000000000020000
[ 13.846832] [ T1126] R13: 00007f88ac2243af R14: 0000561cd44352b0 R15:
0000000000000000
[ 13.846833] [ T1126] </TASK>
[ 13.846834] [ T1126] ---[ end trace 0000000000000000 ]---
[ 13.851218] [ T1126] amdgpu: Virtual CRAT table created for CPU
[ 13.851231] [ T1126] amdgpu: Topology: Add CPU node
[ 13.851373] [ T1126] [drm] initializing kernel modesetting (RENOIR
0x1002:0x1638 0x1458:0xD000 0xC9).
[ 13.851385] [ T1126] [drm] register mmio base: 0xFC800000
[ 13.851386] [ T1126] [drm] register mmio size: 524288
[ 13.854289] [ T1126] [drm] add ip block number 0 <soc15_common>
[ 13.854291] [ T1126] [drm] add ip block number 1 <gmc_v9_0>
[ 13.854292] [ T1126] [drm] add ip block number 2 <vega10_ih>
[ 13.854293] [ T1126] [drm] add ip block number 3 <psp>
[ 13.854294] [ T1126] [drm] add ip block number 4 <smu>
[ 13.854295] [ T1126] [drm] add ip block number 5 <dm>
[ 13.854295] [ T1126] [drm] add ip block number 6 <gfx_v9_0>
[ 13.854296] [ T1126] [drm] add ip block number 7 <sdma_v4_0>
[ 13.854297] [ T1126] [drm] add ip block number 8 <vcn_v2_0>
[ 13.854298] [ T1126] [drm] add ip block number 9 <jpeg_v2_0>
[ 13.854306] [ T1126] amdgpu 0000:08:00.0: amdgpu: Fetched VBIOS from VFCT
[ 13.854309] [ T1126] amdgpu: ATOM BIOS: 13-CEZANNE-019
[ 13.854315] [ T1126] Loading firmware: amdgpu/green_sardine_asd.bin
[ 13.856997] [ T1126] Loading firmware: amdgpu/green_sardine_ta.bin
[ 13.857513] [ T1126] Loading firmware: amdgpu/green_sardine_dmcub.bin
[ 13.858779] [ T1126] Loading firmware: amdgpu/green_sardine_pfp.bin
[ 13.859346] [ T1126] Loading firmware: amdgpu/green_sardine_me.bin
[ 13.859835] [ T1126] Loading firmware: amdgpu/green_sardine_ce.bin
[ 13.860219] [ T1126] Loading firmware: amdgpu/green_sardine_rlc.bin
[ 13.860582] [ T1126] Loading firmware: amdgpu/green_sardine_mec.bin
[ 13.861161] [ T1126] Loading firmware: amdgpu/green_sardine_sdma.bin
[ 13.861578] [ T1126] Loading firmware: amdgpu/green_sardine_vcn.bin
[ 13.876508] [ T1126] Console: switching to colour dummy device 80x25
[ 13.900631] [ T1126] amdgpu 0000:08:00.0: vgaarb: deactivate vga console
[ 13.900635] [ T1126] amdgpu 0000:08:00.0: amdgpu: Trusted Memory Zone
(TMZ) feature enabled
[ 13.900638] [ T1126] amdgpu 0000:08:00.0: amdgpu: MODE2 reset
[ 13.900704] [ T1126] [drm] vm size is 262144 GB, 4 levels, block size
is 9-bit, fragment size is 9-bit
[ 13.900709] [ T1126] amdgpu 0000:08:00.0: amdgpu: VRAM: 768M
0x000000F400000000 - 0x000000F42FFFFFFF (768M used)
[ 13.900712] [ T1126] amdgpu 0000:08:00.0: amdgpu: GART: 1024M
0x0000000000000000 - 0x000000003FFFFFFF
[ 13.900719] [ T1126] [drm] Detected VRAM RAM=768M, BAR=768M
[ 13.900720] [ T1126] [drm] RAM width 128bits DDR4
[ 13.900786] [ T1126] [drm] amdgpu: 768M of VRAM memory ready
[ 13.900788] [ T1126] [drm] amdgpu: 15601M of GTT memory ready.
[ 13.900807] [ T1126] [drm] GART: num cpu pages 262144, num gpu pages
262144
[ 13.900932] [ T1126] [drm] PCIE GART of 1024M enabled.
[ 13.900933] [ T1126] [drm] PTB located at 0x000000F42FC00000
[ 13.901149] [ T1126] [drm] Loading DMUB firmware via PSP:
version=0x0101002B
[ 13.901476] [ T1126] [drm] Found VCN firmware Version ENC: 1.24 DEC:
8 VEP: 0 Revision: 9
[ 14.616559] [ T1126] amdgpu 0000:08:00.0: amdgpu: reserve 0x400000
from 0xf42f800000 for PSP TMR
[ 14.907109] [ T1126] amdgpu 0000:08:00.0: amdgpu: RAS: optional ras
ta ucode is not available
[ 14.918179] [ T1126] amdgpu 0000:08:00.0: amdgpu: RAP: optional rap
ta ucode is not available
[ 14.918181] [ T1126] amdgpu 0000:08:00.0: amdgpu: SECUREDISPLAY:
securedisplay ta ucode is not available
[ 14.918359] [ T1126] amdgpu 0000:08:00.0: amdgpu: SMU is initialized
successfully!
[ 14.919520] [ T1126] [drm] Display Core v3.2.301 initialized on DCN 2.1
[ 14.919522] [ T1126] [drm] DP-HDMI FRL PCON supported
[ 14.920071] [ T1126] [drm] DMUB hardware initialized: version=0x0101002B
[ 14.953340] [ T1126] [drm] kiq ring mec 2 pipe 1 q 0
[ 14.956276] [ T1126] kfd kfd: amdgpu: Allocated 3969056 bytes on gart
[ 14.956287] [ T1126] kfd kfd: amdgpu: Total number of KFD nodes to be
created: 1
[ 14.956373] [ T1126] amdgpu: Virtual CRAT table created for GPU
[ 14.956436] [ T1126] amdgpu: Topology: Add dGPU node [0x1638:0x1002]
[ 14.956438] [ T1126] kfd kfd: amdgpu: added device 1002:1638
[ 14.956446] [ T1126] amdgpu 0000:08:00.0: amdgpu: SE 1, SH per SE 1,
CU per SH 8, active_cu_number 7
[ 14.956449] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring gfx uses VM
inv eng 0 on hub 0
[ 14.956450] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.0.0
uses VM inv eng 1 on hub 0
[ 14.956451] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.1.0
uses VM inv eng 4 on hub 0
[ 14.956453] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.2.0
uses VM inv eng 5 on hub 0
[ 14.956454] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.3.0
uses VM inv eng 6 on hub 0
[ 14.956455] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.0.1
uses VM inv eng 7 on hub 0
[ 14.956456] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.1.1
uses VM inv eng 8 on hub 0
[ 14.956457] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.2.1
uses VM inv eng 9 on hub 0
[ 14.956458] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring comp_1.3.1
uses VM inv eng 10 on hub 0
[ 14.956459] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring kiq_0.2.1.0
uses VM inv eng 11 on hub 0
[ 14.956460] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring sdma0 uses VM
inv eng 0 on hub 8
[ 14.956461] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring vcn_dec uses
VM inv eng 1 on hub 8
[ 14.956462] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring vcn_enc0 uses
VM inv eng 4 on hub 8
[ 14.956463] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring vcn_enc1 uses
VM inv eng 5 on hub 8
[ 14.956464] [ T1126] amdgpu 0000:08:00.0: amdgpu: ring jpeg_dec uses
VM inv eng 6 on hub 8
[ 14.956729] [ T1126] amdgpu 0000:08:00.0: amdgpu: Runtime PM not
available
[ 14.956877] [ T1126] [drm] Initialized amdgpu 3.61.0 for 0000:08:00.0
on minor 1
[ 14.962569] [ T1126] fbcon: amdgpudrmfb (fb0) is primary device
[ 14.962676] [ T1126] [drm] pre_validate_dsc:1629 MST_DSC dsc
precompute is not needed
[ 14.997667] [ T1126] Console: switching to colour frame buffer device
240x67
[ 15.015444] [ T1126] amdgpu 0000:08:00.0: [drm] fb0: amdgpudrmfb
frame buffer device
```
The computer has a CPU with built-in GPU: AMD Ryzen 5 5600G with Radeon
Graphics.
The kernel is compiled with LLVM/clang-21.1.6 and LTO.
Thanks
~Forzaa
