On 3/16/26 13:34, Dr. David Alan Gilbert wrote: > * Christian König ([email protected]) wrote: >> Hi, >> >> On 3/16/26 01:57, Dr. David Alan Gilbert wrote: >>> Hi, >>> I'm not sure if this is repeatable, but I landed with a null >>> pointer during a GPU reset, so thought I should probably >>> report it: >>> 6.19.7-300.fc44.x86_64 >>> Mar 16 00:24:39 dalek kernel: BUG: kernel NULL pointer dereference, >>> address: 0000000000000018 >>> Mar 16 00:24:39 dalek kernel: #PF: supervisor read access in kernel mode >>> .... >>> Mar 16 00:24:39 dalek kernel: Workqueue: amdgpu-reset-dev >>> drm_sched_job_timedout [gpu_sched] >>> Mar 16 00:24:39 dalek kernel: RIP: 0010:dma_fence_is_signaled+0x12/0x60 >>> [amdgpu] >>> >>> see full oops below; >>> >>> 09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] >>> Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X] (rev c7) >>> AMD Ryzen 9 3950X >>> >>> I suspect the timeout was real, and caused by a runaway llama, I forgot the >>> flag to stop it trying to use the GPU for image encoding; but the null page >>> seems unfortunate. Impressively the audio still kept playing via it: >>> >>> I have the devcoredump copied if it's of interest >>> (Note for self: ~/amd.core-2026-03-16) >> >> >> Can you open up a bug report for that > > Sure; on bugzilla.kernel.org ?
No, https://gitlab.freedesktop.org/ Sorry I though that this would be obvious. Regards, Christian. >> and please provide what line of code amdgpu_device_gpu_recover.cold+0x244 >> decodes to. > > Yeh, let me see what I can do with the Fedora symbol packages. > > Dave > >> >> Thanks, >> Christian. >> >>> >>> Dave >>> >>> >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State >>> Completed >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] AMDGPU >>> device coredump file has been created >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] Check your >>> /sys/class/drm/card1/device/devcoredump/data >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: ring gfx >>> timeout, signaled seq=1705630, emitted seq=1705633 >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Process >>> llama-mtmd-cli pid 299886 thread llama-mtmd-cli pid 299886 >>> Mar 16 00:24:28 dalek kernel: amdgpu 0000:09:00.0: amdgpu: GPU reset >>> begin!. Source: 1 >>> Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: amdgpu: failed to >>> suspend display audio >>> Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Guilty job >>> already signaled, skipping HW reset >>> Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: amdgpu: GPU reset(1) >>> succeeded! >>> Mar 16 00:24:32 dalek kernel: amdgpu 0000:09:00.0: [drm] device wedged, but >>> recovered through reset >>> Mar 16 00:24:34 dalek lightdm[40555]: ATTENTION: default value of option >>> mesa_glthread overridden by environment. >>> Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State >>> Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: Dumping IP State >>> Completed >>> Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] AMDGPU >>> device coredump file has been created >>> Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: [drm] Check your >>> /sys/class/drm/card1/device/devcoredump/data >>> Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: ring gfx >>> timeout, signaled seq=1705632, emitted seq=1705637 >>> Mar 16 00:24:34 dalek kernel: amdgpu 0000:09:00.0: amdgpu: GPU reset >>> begin!. Source: 1 >>> Mar 16 00:24:38 dalek kernel: amdgpu 0000:09:00.0: amdgpu: failed to >>> suspend display audio >>> Mar 16 00:24:39 dalek kernel: BUG: kernel NULL pointer dereference, >>> address: 0000000000000018 >>> Mar 16 00:24:39 dalek kernel: #PF: supervisor read access in kernel mode >>> Mar 16 00:24:39 dalek kernel: #PF: error_code(0x0000) - not-present page >>> Mar 16 00:24:39 dalek kernel: PGD 849708067 P4D 849708067 PUD 15d277067 PMD >>> 0 >>> Mar 16 00:24:39 dalek kernel: Oops: Oops: 0000 [#1] SMP NOPTI >>> Mar 16 00:24:39 dalek kernel: CPU: 7 UID: 0 PID: 298062 Comm: >>> kworker/u128:2 Not tainted 6.19.7-300.fc44.x86_64 #1 PREEMPT(lazy) >>> Mar 16 00:24:39 dalek kernel: Hardware name: To Be Filled By O.E.M. To Be >>> Filled By O.E.M./X570 Pro4, BIOS P3.10 07/13/2020 >>> Mar 16 00:24:39 dalek kernel: Workqueue: amdgpu-reset-dev >>> drm_sched_job_timedout [gpu_sched] >>> Mar 16 00:24:39 dalek kernel: RIP: 0010:dma_fence_is_signaled+0x12/0x60 >>> [amdgpu] >>> Mar 16 00:24:39 dalek kernel: Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 >>> 90 90 90 90 90 90 90 90 90 90 90 48 8b 47 30 48 d1 e8 89 c2 83 e2 01 75 2c >>> 48 8b> >>> Mar 16 00:24:39 dalek kernel: RSP: 0018:ffffcf349c553d20 EFLAGS: 00010246 >>> Mar 16 00:24:39 dalek kernel: RAX: 0000000000000000 RBX: ffffcf349c553da0 >>> RCX: 0000000000000000 >>> Mar 16 00:24:39 dalek kernel: RDX: 0000000000000000 RSI: 0000000000000000 >>> RDI: ffff8bce4ecd4380 >>> Mar 16 00:24:39 dalek kernel: RBP: 0000000000000000 R08: 0000000010000020 >>> R09: ffff8bc9c0400b68 >>> Mar 16 00:24:39 dalek kernel: R10: 0000000000000080 R11: ffffffffa16760a0 >>> R12: ffff8bc9e9100000 >>> Mar 16 00:24:39 dalek kernel: R13: ffff8bca7ccab200 R14: 0000000000000000 >>> R15: 0000000000000000 >>> Mar 16 00:24:39 dalek kernel: FS: 0000000000000000(0000) >>> GS:ffff8bd90c066000(0000) knlGS:0000000000000000 >>> Mar 16 00:24:39 dalek kernel: CS: 0010 DS: 0000 ES: 0000 CR0: >>> 0000000080050033 >>> Mar 16 00:24:39 dalek kernel: CR2: 0000000000000018 CR3: 00000001c591f000 >>> CR4: 0000000000350ef0 >>> Mar 16 00:24:39 dalek kernel: Call Trace: >>> Mar 16 00:24:39 dalek kernel: <TASK> >>> Mar 16 00:24:39 dalek kernel: amdgpu_device_gpu_recover.cold+0x244/0x2ec >>> [amdgpu] >>> Mar 16 00:24:39 dalek kernel: amdgpu_job_timedout.cold+0x218/0x258 [amdgpu] >>> Mar 16 00:24:39 dalek kernel: ? srso_return_thunk+0x5/0x5f >>> Mar 16 00:24:39 dalek kernel: drm_sched_job_timedout+0x8b/0x190 [gpu_sched] >>> Mar 16 00:24:39 dalek kernel: ? srso_return_thunk+0x5/0x5f >>> Mar 16 00:24:39 dalek kernel: process_one_work+0x190/0x350 >>> Mar 16 00:24:39 dalek kernel: worker_thread+0x18d/0x2f0 >>> Mar 16 00:24:39 dalek kernel: ? __pfx_worker_thread+0x10/0x10 >>> Mar 16 00:24:39 dalek kernel: kthread+0xfa/0x240 >>> Mar 16 00:24:39 dalek kernel: ? finish_task_switch.isra.0+0x82/0x2a0 >>> Mar 16 00:24:39 dalek kernel: ? __pfx_kthread+0x10/0x10 >>> Mar 16 00:24:39 dalek kernel: ? __pfx_kthread+0x10/0x10 >>> Mar 16 00:24:39 dalek kernel: ret_from_fork+0x130/0x1a0 >>> Mar 16 00:24:39 dalek kernel: ? __pfx_kthread+0x10/0x10 >>> Mar 16 00:24:39 dalek kernel: ret_from_fork_asm+0x1a/0x30 >>> Mar 16 00:24:39 dalek kernel: </TASK> >>> Mar 16 00:24:39 dalek kernel: Modules linked in: dm_crypt snd_seq_dummy >>> snd_hrtimer nft_masq nft_reject_ipv4 act_csum cls_u32 sch_htb nf_nat_tftp >>> nf_conntr> >>> Mar 16 00:24:39 dalek kernel: drm_panel_backlight_quirks gpu_sched >>> drm_suballoc_helper video drm_buddy drm_display_helper nvme nvme_core cec >>> ghash_clmulni> >>> Mar 16 00:24:39 dalek kernel: CR2: 0000000000000018 >>> Mar 16 00:24:39 dalek kernel: ---[ end trace 0000000000000000 ]--- >>> Mar 16 00:24:39 dalek kernel: RIP: 0010:dma_fence_is_signaled+0x12/0x60 >>> [amdgpu] >>> Mar 16 00:24:39 dalek kernel: Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 >>> 90 90 90 90 90 90 90 90 90 90 90 48 8b 47 30 48 d1 e8 89 c2 83 e2 01 75 2c >>> 48 8b> >>> Mar 16 00:24:39 dalek kernel: RSP: 0018:ffffcf349c553d20 EFLAGS: 00010246 >>> Mar 16 00:24:39 dalek kernel: RAX: 0000000000000000 RBX: ffffcf349c553da0 >>> RCX: 0000000000000000 >>> Mar 16 00:24:39 dalek kernel: RDX: 0000000000000000 RSI: 0000000000000000 >>> RDI: ffff8bce4ecd4380 >>> Mar 16 00:24:39 dalek kernel: RBP: 0000000000000000 R08: 0000000010000020 >>> R09: ffff8bc9c0400b68 >>> Mar 16 00:24:39 dalek kernel: R10: 0000000000000080 R11: ffffffffa16760a0 >>> R12: ffff8bc9e9100000 >>> Mar 16 00:24:39 dalek kernel: R13: ffff8bca7ccab200 R14: 0000000000000000 >>> R15: 0000000000000000 >>> Mar 16 00:24:39 dalek kernel: FS: 0000000000000000(0000) >>> GS:ffff8bd90c066000(0000) knlGS:0000000000000000 >>> Mar 16 00:24:39 dalek kernel: CS: 0010 DS: 0000 ES: 0000 CR0: >>> 0000000080050033 >>> Mar 16 00:24:39 dalek kernel: CR2: 0000000000000018 CR3: 00000001c591f000 >>> CR4: 0000000000350ef0 >>> Mar 16 00:24:39 dalek kernel: note: kworker/u128:2[298062] exited with irqs >>> disabled >>> >>> -- >>> -----Open up your eyes, open up your mind, open up your code ------- >>> / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ >>> \ dave @ treblig.org | | In Hex / >>> \ _________________________|_____ http://www.treblig.org |_______/ >>
