XPost: linux.debian.bugs.dist   
   From: carnil@debian.org   
      
   Control: tags -1 + upstream moreinfo   
      
   Hi Amit,   
      
   On Tue, Dec 16, 2025 at 11:26:26AM +0000, Amit Gurdasani wrote:   
   > Package: linux-image-6.17.11+deb14-amd64   
   > Version: 6.17.11-1   
   > Severity: important   
   > X-Debbugs-Cc: debian-amd64@lists.debian.org   
   > User: debian-amd64@lists.debian.org   
   > 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]=C   
   U_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:     
   > 2025-12-16T10:12:43.249635+00:00 athena kernel:  amdgpu_gmc_fl   
   sh_gpu_tlb_pasid+0xd6/0x400 [amdgpu]   
   > 2025-12-16T10:12:43.249635+00:00 athena kernel:  amdgpu_tlb_fe   
   ce_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_worke   
   _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   
      
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