Bug#1123046: linux-image-6.17.11+deb14-amd64: amdgpu kernel oops (regression) in 6.17.11, not in 6.17.9

Package: linux-image-6.17.11+deb14-amd64
Version: 6.17.11-1
Severity: important
X-Debbugs-Cc: [email protected]
User: [email protected]
Usertags: amd64

Dear Maintainer,

I had my Debian testing desktop reboot after an unattended upgrade where the
kernel was updated from linux-image-6.17.9+deb14-amd64 to
linux-image-6.17.11+deb14-amd64. After reboot overnight, I found the machine
unresponsive in the morning. Rebooting revealed many successive kernel oops
in amdgpu. Oops text below.

The GPU in use is an AMD Radeon R9 270X ("Curacao XT"), from the GCN 1.0
generation. I _am_ using the following argument on the kernel command line
to gain some performance:

amdgpu.ppfeaturemask=0xffffffff

This kernel oops was not occurring in kernels up to and including 6.17.9
(Debian-packaged).

I have not tried to boot 6.17.11 without the amdgpu.ppfeaturemask=0xffffffff
kernel command-line argument to see if the oops still occurs.

I did find that there was some work done on amdgpu in November:

https://lists.freedesktop.org/archives/amd-gfx/2025-November/133356.html

I don't know enough to know whether that work could cause this kernel oops.

Downgrading back to 6.17.9 has eliminated the kernel oops.

Thanks,

Amit Gurdasani

Oops text:

2025-12-16T10:12:43.249625+00:00 athena kernel: amdgpu 0000:01:00.0: [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* IB test failed on uvd (-110).
2025-12-16T10:12:43.249625+00:00 athena kernel: amdgpu 0000:01:00.0: amdgpu: ib ring test failed (-110).
2025-12-16T10:12:43.249627+00:00 athena kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000
2025-12-16T10:12:43.249627+00:00 athena kernel: #PF: supervisor instruction fetch in kernel mode
2025-12-16T10:12:43.249627+00:00 athena kernel: #PF: error_code(0x0010) - not-present page
2025-12-16T10:12:43.249627+00:00 athena kernel: PGD 0 P4D 0 
2025-12-16T10:12:43.249627+00:00 athena kernel: Oops: Oops: 0010 [#1] SMP NOPTI
2025-12-16T10:12:43.249627+00:00 athena kernel: CPU: 2 UID: 0 PID: 564 Comm: kworker/2:2 Tainted: G S   U              6.17.11+deb14-amd64 #1 PREEMPT(lazy)  Debian 6.17.11-1 
2025-12-16T10:12:43.249628+00:00 athena kernel: Tainted: [S]=CPU_OUT_OF_SPEC, [U]=USER
2025-12-16T10:12:43.249629+00:00 athena kernel: Hardware name: Gigabyte Technology Co., Ltd. Z690 UD DDR4/Z690 UD DDR4, BIOS F29 09/27/2024
2025-12-16T10:12:43.249629+00:00 athena kernel: Workqueue: events amdgpu_tlb_fence_work [amdgpu]
2025-12-16T10:12:43.249629+00:00 athena kernel: RIP: 0010:0x0
2025-12-16T10:12:43.249630+00:00 athena kernel: Code: Unable to access opcode bytes at 0xffffffffffffffd6.
2025-12-16T10:12:43.249630+00:00 athena kernel: RSP: 0018:ffffca9902dbfde0 EFLAGS: 00010246
2025-12-16T10:12:43.249630+00:00 athena kernel: RAX: 0000000000000000 RBX: 0000000000008000 RCX: 0000000000000001
2025-12-16T10:12:43.249632+00:00 athena kernel: RDX: 0000000000000002 RSI: 0000000000008000 RDI: ffff8a34a8a00000
2025-12-16T10:12:43.249633+00:00 athena kernel: RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
2025-12-16T10:12:43.249633+00:00 athena kernel: R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000
2025-12-16T10:12:43.249633+00:00 athena kernel: R13: 0000000000000002 R14: 0000000000000000 R15: ffff8a34a8a00000
2025-12-16T10:12:43.249633+00:00 athena kernel: FS:  0000000000000000(0000) GS:ffff8a3c8a288000(0000) knlGS:0000000000000000
2025-12-16T10:12:43.249633+00:00 athena kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
2025-12-16T10:12:43.249635+00:00 athena kernel: CR2: ffffffffffffffd6 CR3: 000000018082c000 CR4: 0000000000f50ef0
2025-12-16T10:12:43.249635+00:00 athena kernel: PKRU: 55555554
2025-12-16T10:12:43.249635+00:00 athena kernel: Call Trace:
2025-12-16T10:12:43.249635+00:00 athena kernel:  <TASK>
2025-12-16T10:12:43.249635+00:00 athena kernel:  amdgpu_gmc_flush_gpu_tlb_pasid+0xd6/0x400 [amdgpu]
2025-12-16T10:12:43.249635+00:00 athena kernel:  amdgpu_tlb_fence_work+0x6e/0xe0 [amdgpu]
2025-12-16T10:12:43.249636+00:00 athena kernel:  process_one_work+0x18f/0x350
2025-12-16T10:12:43.249638+00:00 athena kernel:  worker_thread+0x25a/0x3a0
2025-12-16T10:12:43.249638+00:00 athena kernel:  ? __pfx_worker_thread+0x10/0x10
2025-12-16T10:12:43.249639+00:00 athena kernel:  kthread+0xf9/0x240
2025-12-16T10:12:43.249639+00:00 athena kernel:  ? __pfx_kthread+0x10/0x10
2025-12-16T10:12:43.249639+00:00 athena kernel:  ? __pfx_kthread+0x10/0x10
2025-12-16T10:12:43.249639+00:00 athena kernel:  ret_from_fork+0x194/0x1c0
2025-12-16T10:12:43.249640+00:00 athena kernel:  ? __pfx_kthread+0x10/0x10
2025-12-16T10:12:43.249641+00:00 athena kernel:  ret_from_fork_asm+0x1a/0x30
2025-12-16T10:12:43.249641+00:00 athena kernel:  </TASK>
2025-12-16T10:12:43.249641+00:00 athena kernel: Modules linked in: dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio raid1 dm_raid raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx md_mod xor hid_generic usbhid hid raid6_pq amdgpu(+) dm_mod xe uas usb_storage intel_vsec sr_mod drm_gpuvm configfs amdxcp cdrom sd_mod drm_panel_backlight_quirks drm_gpusvm_helper gpu_sched crc16 i915 radeon drm_ttm_helper drm_buddy ttm drm_exec drm_suballoc_helper i2c_algo_bit drm_display_helper cec rc_core drm_client_lib ahci drm_kms_helper iTCO_wdt intel_pmc_bxt libahci xhci_pci_renesas iTCO_vendor_support drm xhci_pci libata watchdog mxm_wmi nvme xhci_hcd r8169 nvme_core realtek mdio_devres scsi_mod usbcore libphy video nvme_keyring intel_lpss_pci i2c_i801 mdio_bus intel_lpss nvme_auth
  wmi fan i2c_smbus scsi_common button pinctrl_alderlake usb_common idma64 efivarfs
2025-12-16T10:12:43.249643+00:00 athena kernel: CR2: 0000000000000000
2025-12-16T10:12:43.249646+00:00 athena kernel: ---[ end trace 0000000000000000 ]---
2025-12-16T10:12:43.249646+00:00 athena kernel: RIP: 0010:0x0
2025-12-16T10:12:43.249647+00:00 athena kernel: Code: Unable to access opcode bytes at 0xffffffffffffffd6.
2025-12-16T10:12:43.249647+00:00 athena kernel: RSP: 0018:ffffca9902dbfde0 EFLAGS: 00010246
2025-12-16T10:12:43.249647+00:00 athena kernel: RAX: 0000000000000000 RBX: 0000000000008000 RCX: 0000000000000001
2025-12-16T10:12:43.249647+00:00 athena kernel: RDX: 0000000000000002 RSI: 0000000000008000 RDI: ffff8a34a8a00000
2025-12-16T10:12:43.249647+00:00 athena kernel: RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
2025-12-16T10:12:43.249649+00:00 athena kernel: R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000
2025-12-16T10:12:43.249649+00:00 athena kernel: R13: 0000000000000002 R14: 0000000000000000 R15: ffff8a34a8a00000
2025-12-16T10:12:43.249649+00:00 athena kernel: FS:  0000000000000000(0000) GS:ffff8a3c8a288000(0000) knlGS:0000000000000000
2025-12-16T10:12:43.249649+00:00 athena kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
2025-12-16T10:12:43.249649+00:00 athena kernel: CR2: ffffffffffffffd6 CR3: 000000018082c000 CR4: 0000000000f50ef0
2025-12-16T10:12:43.249649+00:00 athena kernel: PKRU: 55555554
2025-12-16T10:12:43.249651+00:00 athena kernel: note: kworker/2:2[564] exited with irqs disabled



-- System Information:
Debian Release: forky/sid
  APT prefers stable-security
  APT policy: (500, 'stable-security'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.17.9+deb14-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_CPU_OUT_OF_SPEC, TAINT_USER, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-6.17.11+deb14-amd64 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.150
ii  kmod                                    34.2-2
ii  linux-base                              4.14

Versions of packages linux-image-6.17.11+deb14-amd64 recommends:
ii  apparmor  4.1.0-1+b1

Versions of packages linux-image-6.17.11+deb14-amd64 suggests:
pn  debian-kernel-handbook               <none>
ii  firmware-linux-free                  20241210-2
pn  grub-pc | grub-efi-amd64 | extlinux  <none>
pn  linux-doc-6.17                       <none>