Hi Janos, On Thu, Feb 19, 2026 at 05:35:39PM +0100, Pásztor János wrote: > Package: src:linux > Version: 6.18.5-1~bpo13+1 > Severity: critical > Justification: breaks the whole system > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > * What led up to the situation? > > Upgrade from 6.17.13+deb13-amd64 to 6.18.5-1~bpo13+1 > > * Logs from the QR code link below > > [ 5.574897] amdgpu 0000:07:00.0: amdgpu: vm size is 262144 GB, 4 levels, > block size is 9-bit, fragment size is 9-bit > [ 5.574905] amdgpu 0000:07:00.0: amdgpu: VRAM: 12272M 0x0000008000000000 > - 0x00000082FEFFFFFF (12272M used) > [ 5.574907] amdgpu 0000:07:00.0: amdgpu: GART: 512M 0x0000000000000000 - > 0x000000001FFFFFFF > [ 5.574915] [drm] Detected VRAM RAM=12272M, BAR=256M > [ 5.574917] [drm] RAM width 192bits GDDR6 > [ 5.574998] amdgpu 0000:07:00.0: amdgpu: amdgpu: 12272M of VRAM memory > ready > [ 5.575002] amdgpu 0000:07:00.0: amdgpu: amdgpu: 16001M of GTT memory > ready. > [ 5.575018] [drm] GART: num cpu pages 131072, num gpu pages 131072 > [ 5.575174] [drm] PCIE GART of 512M enabled (table at > 0x0000008000F00000). > [ 7.767281] amdgpu 0000:07:00.0: amdgpu: STB initialized to 2048 entries > [ 7.767346] amdgpu 0000:07:00.0: amdgpu: [drm] Loading DMUB firmware via > PSP: version=0x02020021 > [ 7.767657] [drm] use_doorbell being set to: [true] > [ 7.767669] [drm] use_doorbell being set to: [true] > [ 7.767682] amdgpu 0000:07:00.0: amdgpu: [VCN instance 0] Found VCN > firmware Version ENC: 1.33 DEC: 4 VEP: 0 Revision: 13 > [ 7.831162] amdgpu 0000:07:00.0: amdgpu: reserve 0xa00000 from > 0x82fd000000 for PSP TMR > [ 7.937155] amdgpu 0000:07:00.0: amdgpu: RAS: optional ras ta ucode is > not available > [ 7.951708] amdgpu 0000:07:00.0: amdgpu: SECUREDISPLAY: optional > securedisplay ta ucode is not available > [ 7.951728] amdgpu 0000:07:00.0: amdgpu: smu driver if version = > 0x0000000e, smu fw if version = 0x00000012, smu fw program = 0, version = > 0x00413e00 (65.62.0) > [ 7.951732] amdgpu 0000:07:00.0: amdgpu: SMU driver if version not > matched > [ 7.951760] amdgpu 0000:07:00.0: amdgpu: use vbios provided pptable > [ 8.010221] amdgpu 0000:07:00.0: amdgpu: SMU is initialized successfully! > [ 8.010532] amdgpu 0000:07:00.0: amdgpu: [drm] Display Core v3.2.351 > initialized on DCN 3.0 > [ 8.010534] amdgpu 0000:07:00.0: amdgpu: [drm] DP-HDMI FRL PCON supported > [ 8.011979] amdgpu 0000:07:00.0: amdgpu: [drm] DMUB hardware initialized: > version=0x02020021 > [ 8.189338] amdgpu 0000:07:00.0: amdgpu: kiq ring mec 2 pipe 1 q 0 > [ 8.248359] amdgpu: HMM registered 12272MB device memory > [ 8.249450] kfd kfd: amdgpu: Allocated 3969056 bytes on gart > [ 8.249461] kfd kfd: amdgpu: Total number of KFD nodes to be created: 1 > [ 8.249662] amdgpu: Virtual CRAT table created for GPU > [ 8.250038] amdgpu: Topology: Add dGPU node [0x73df:0x1002] > [ 8.250041] kfd kfd: amdgpu: added device 1002:73df > [ 8.250061] amdgpu 0000:07:00.0: amdgpu: SE 2, SH per SE 2, CU per SH 10, > active_cu_number 40 > [ 8.250065] amdgpu 0000:07:00.0: amdgpu: ring gfx_0.0.0 uses VM inv eng 0 > on hub 0 > [ 8.250066] amdgpu 0000:07:00.0: amdgpu: ring gfx_0.1.0 uses VM inv eng 1 > on hub 0 > [ 8.250068] amdgpu 0000:07:00.0: amdgpu: ring comp_1.0.0 uses VM inv eng > 4 on hub 0 > [ 8.250069] amdgpu 0000:07:00.0: amdgpu: ring comp_1.1.0 uses VM inv eng > 5 on hub 0 > [ 8.250071] amdgpu 0000:07:00.0: amdgpu: ring comp_1.2.0 uses VM inv eng > 6 on hub 0 > [ 8.250072] amdgpu 0000:07:00.0: amdgpu: ring comp_1.3.0 uses VM inv eng > 7 on hub 0 > [ 8.250073] amdgpu 0000:07:00.0: amdgpu: ring comp_1.0.1 uses VM inv eng > 8 on hub 0 > [ 8.250075] amdgpu 0000:07:00.0: amdgpu: ring comp_1.1.1 uses VM inv eng > 9 on hub 0 > [ 8.250076] amdgpu 0000:07:00.0: amdgpu: ring comp_1.2.1 uses VM inv eng > 10 on hub 0 > [ 8.250077] amdgpu 0000:07:00.0: amdgpu: ring comp_1.3.1 uses VM inv eng > 11 on hub 0 > [ 8.250079] amdgpu 0000:07:00.0: amdgpu: ring kiq_0.2.1.0 uses VM inv eng > 12 on hub 0 > [ 8.250080] amdgpu 0000:07:00.0: amdgpu: ring sdma0 uses VM inv eng 13 on > hub 0 > [ 8.250082] amdgpu 0000:07:00.0: amdgpu: ring sdma1 uses VM inv eng 14 on > hub 0 > [ 8.250083] amdgpu 0000:07:00.0: amdgpu: ring vcn_dec_0 uses VM inv eng 0 > on hub 8 > [ 8.250084] amdgpu 0000:07:00.0: amdgpu: ring vcn_enc_0.0 uses VM inv eng > 1 on hub 8 > [ 8.250086] amdgpu 0000:07:00.0: amdgpu: ring vcn_enc_0.1 uses VM inv eng > 4 on hub 8 > [ 8.250087] amdgpu 0000:07:00.0: amdgpu: ring jpeg_dec uses VM inv eng 5 > on hub 8 > [ 8.251585] amdgpu 0000:07:00.0: amdgpu: Using BACO for runtime pm > [ 8.252005] amdgpu 0000:07:00.0: [drm] Registered 6 planes with drm panic > [ 8.252006] [drm] Initialized amdgpu 3.64.0 for 0000:07:00.0 on minor 0 > [ 8.258319] fbcon: amdgpudrmfb (fb0) is primary device > [ 8.258570] [drm] pre_validate_dsc:1667 MST_DSC dsc precompute is not > needed > [ 8.320451] Console: switching to colour frame buffer device 160x45 > [ 8.327555] amdgpu 0000:07:00.0: [drm] fb0: amdgpudrmfb frame buffer > device > [ 8.540141] device-mapper: core: CONFIG_IMA_DISABLE_HTABLE is disabled. > Duplicate IMA measurements will not be recorded in the IMA log. > [ 8.540174] device-mapper: uevent: version 1.0.3 > [ 8.540256] device-mapper: ioctl: 4.50.0-ioctl (2025-04-28) initialised: > [email protected] > [ 18.241995] PM: Image not found (code -22) > [ 18.596800] SGI XFS with ACLs, security attributes, realtime, scrub, > repair, quota, no debug enabled > [ 18.606005] XFS (dm-2): Deprecated V4 format (crc=0) not supported by > kernel. > [ 21.409345] Kernel panic - not syncing: Attempted to kill init! > exitcode=0x00000100 > [ 21.409354] CPU: 15 UID: 0 PID: 1 Comm: init Not tainted > 6.18.5+deb13-amd64 #1 PREEMPT(lazy) Debian 6.18.5-1~bpo13+1 > [ 21.409363] Hardware name: Gigabyte Technology Co., Ltd. B550 AORUS PRO > V2/B550 AORUS PRO V2, BIOS F18d 09/02/2024 > [ 21.409370] Call Trace: > [ 21.409374] <TASK> > [ 21.409379] dump_stack_lvl+0x5d/0x80 > [ 21.409386] vpanic+0x116/0x310 > [ 21.409392] panic+0x6b/0x6b > [ 21.409396] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409403] do_exit.cold+0x14/0x14 > [ 21.409408] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409413] ? n_tty_write+0x3de/0x540 > [ 21.409419] do_group_exit+0x30/0x80 > [ 21.409425] __x64_sys_exit_group+0x18/0x20 > [ 21.409430] x64_sys_call+0x14fa/0x1500 > [ 21.409435] do_syscall_64+0x84/0x800 > [ 21.409441] ? file_tty_write.isra.0+0x20c/0x2c0 > [ 21.409448] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409453] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409458] ? ptep_set_access_flags+0x32/0x40 > [ 21.409464] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409469] ? wp_page_reuse+0x8d/0xa0 > [ 21.409475] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409480] ? do_wp_page+0x963/0xf30 > [ 21.409485] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409491] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409496] ? __handle_mm_fault+0xa63/0xf20 > [ 21.409502] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409507] ? do_syscall_64+0xbc/0x800 > [ 21.409514] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409519] ? count_memcg_events+0xdd/0x1b0 > [ 21.409526] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409531] ? handle_mm_fault+0x1d7/0x2e0 > [ 21.409537] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409542] ? do_user_addr_fault+0x2c3/0x7f0 > [ 21.409548] ? srso_alias_return_thunk+0x5/0xfbef5 > [ 21.409554] entry_SYSCALL_64_after_hwframe+0x76/0x7e > [ 21.409560] RIP: 0033:0x7f4059d77295 > [ 21.409565] Code: 81 8b 10 00 f7 d8 bd ff ff ff ff 64 89 02 eb c6 e8 20 > f9 03 00 48 8b 35 69 8b 10 00 ba e7 00 00 00 eb 03 66 90 f4 89 d0 0f 05 <48> > 3d 00 f0 ff ff 76 f3 f7 d8 64 89 06 eb ec 66 2e 0f 1f 84 00 00 > [ 21.409575] RSP: 002b:00007ffd4f12a018 EFLAGS: 00000202 ORIG_RAX: > 00000000000000e7 > [ 21.409582] RAX: ffffffffffffffda RBX: 0000563018b552a0 RCX: > 00007f4059d77295 > [ 21.409587] RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: > 0000000000000001 > [ 21.409593] RBP: 0000000000000004 R08: 0000000000000030 R09: > 00000000000000be > [ 21.409597] R10: 0000000000000000 R11: 0000000000000202 R12: > 0000000000000001 > [ 21.409602] R13: 00007ffd4f12a3f8 R14: 0000000000000000 R15: > 0000562ffd5618b8 > [ 21.409611] </TASK> > [ 21.410002] Kernel Offset: 0x2d600000 from 0xffffffff81000000 (relocation > range: 0xffffffff80000000-0xffffffffbfffffff)
>From what I see above you are using a XFS V4 filesystem, right? XFS V4 support was long deprecated and is removed with 6.18.5, we will add a NEWS entry (which is yet missing) and adding release notes. That is, you need to move to a V5 format XFS. We might want to handle it differently for the backports kernel, but will ask Ben about it. I will for now merge both bugs as this will need to be handled in documentation for users upgrading to Debian forky. It is not the right time to do it, as people wanting to stick with the kernel still supporting it are able to compile a own kernel with the config option enabled, but which will be dropped completely in next versions of Linux. Keeping it enabled for another cycle will be worse afterwards. Unfortunately the only option for you to mgirate to a V5 XFS filesystem is to actually create a new one. There is not the possibility to covert a V4 to a V5. Regards, Salvatore
