Comment # 20 on bug 1201205 from 
(In reply to Thomas Zimmermann from comment #18)
> Hi
> 
> (In reply to Dronskowski from comment #13)
> > Without attaching the full journal, on failing boots I find this kernel bug:
> > 
> > > Jul 05 18:36:06 localhost kernel: [drm] amdgpu kernel modesetting enabled.
> > > Jul 05 18:36:06 localhost kernel: amdgpu: Ignoring ACPI CRAT on non-APU system
> > > Jul 05 18:36:06 localhost kernel: amdgpu: Virtual CRAT table created for CPU
> > > Jul 05 18:36:06 localhost kernel: amdgpu: Topology: Add CPU node
> > > Jul 05 18:36:06 localhost kernel: Console: switching to colour dummy device 80x25
> > > Jul 05 18:36:06 localhost systemd-udevd[363]: Worker [364] terminated by signal 9 (KILL)
> > > Jul 05 18:36:06 localhost systemd-udevd[363]: 0000:01:00.0: Worker [364] failed
> > > Jul 05 18:36:06 localhost kernel: BUG: kernel NULL pointer dereference, address: 0000000000000008
> > > Jul 05 18:36:06 localhost kernel: #PF: supervisor read access in kernel mode
> > > Jul 05 18:36:06 localhost kernel: #PF: error_code(0x0000) - not-present page
> > > Jul 05 18:36:06 localhost kernel: PGD 0 P4D 0 
> > > Jul 05 18:36:06 localhost kernel: Oops: 0000 [#1] PREEMPT SMP NOPTI
> > > Jul 05 18:36:06 localhost kernel: CPU: 3 PID: 364 Comm: systemd-udevd Tainted: G           OE     5.18.9-6.ge00841d-default #1 openSUSE Tumbleweed (unreleased) 4bea8a49b83056be532b84db201d290b7bce70fb
> > > Jul 05 18:36:06 localhost kernel: Hardware name: System manufacturer System Product Name/PRIME X370-PRO, BIOS 6042 04/28/2022
> > > Jul 05 18:36:06 localhost kernel: RIP: 0010:kernfs_find_and_get_ns+0x11/0x70
> > > Jul 05 18:36:06 localhost kernel: Code: 08 48 83 40 40 01 49 8b 46 08 48 83 40 58 01 31 c0 eb d1 66 0f 1f 44 00 00 0f 1f 44 00 00 41 55 49 89 d5 41 54 49 89 f4 55 53 <48> 8b 47 08 48 89 fb 48 85 c0 48 0f 44 c7 48 8b 68 50 48 83 c5 60
> > > Jul 05 18:36:06 localhost kernel: RSP: 0018:ffffa5a802083a38 EFLAGS: 00010246
> > > Jul 05 18:36:06 localhost kernel: RAX: 0000000000000000 RBX: ffffffffb119fc20 RCX: ffffa5a802083a10
> > > Jul 05 18:36:06 localhost kernel: RDX: 0000000000000000 RSI: ffffffffb119fd68 RDI: 0000000000000000
> > > Jul 05 18:36:06 localhost kernel: RBP: 0000000000000000 R08: 0000000000000040 R09: 00000000fcf00000
> > > Jul 05 18:36:06 localhost kernel: R10: 0000000000000000 R11: ffff88c0c77e829c R12: ffffffffb119fd68
> > > Jul 05 18:36:06 localhost kernel: R13: 0000000000000000 R14: ffff88c0d0c8d7c0 R15: 0000000000000000
> > > Jul 05 18:36:06 localhost kernel: FS:  00007f1114895b00(0000) GS:ffff88c7ceac0000(0000) knlGS:0000000000000000
> > > Jul 05 18:36:06 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > Jul 05 18:36:06 localhost kernel: CR2: 0000000000000008 CR3: 0000000107a46000 CR4: 00000000003506e0
> > > Jul 05 18:36:06 localhost kernel: Call Trace:
> > > Jul 05 18:36:06 localhost kernel:  <TASK>
> > > Jul 05 18:36:06 localhost kernel:  sysfs_unmerge_group+0x18/0x60
> > > Jul 05 18:36:06 localhost kernel:  dpm_sysfs_remove+0x20/0x60
> > > Jul 05 18:36:06 localhost kernel:  device_del+0xb2/0x3f0
> > > Jul 05 18:36:06 localhost kernel:  platform_device_del.part.0+0x13/0x70
> > > Jul 05 18:36:06 localhost kernel:  platform_device_unregister+0x1c/0x30
> > > Jul 05 18:36:06 localhost kernel:  sysfb_disable+0x2b/0x60
> > > Jul 05 18:36:06 localhost kernel:  remove_conflicting_framebuffers+0x1b/0xc0
> > > Jul 05 18:36:06 localhost kernel:  remove_conflicting_pci_framebuffers+0xce/0x120
> > > Jul 05 18:36:06 localhost kernel:  drm_aperture_remove_conflicting_pci_framebuffers+0x57/0x80
> > > Jul 05 18:36:06 localhost kernel:  amdgpu_pci_probe+0x126/0x3c0 [amdgpu ab2a35e28bca10ea2bed443b5ef9d0bdfa6ec825]
> > > Jul 05 18:36:06 localhost kernel:  local_pci_probe+0x41/0x80
> > > Jul 05 18:36:06 localhost kernel:  pci_device_probe+0xc3/0x220
> > > Jul 05 18:36:06 localhost kernel:  really_probe+0x1a1/0x370
> > > Jul 05 18:36:06 localhost kernel:  __driver_probe_device+0xfc/0x170
> > > Jul 05 18:36:06 localhost kernel:  driver_probe_device+0x1f/0x90
> > > Jul 05 18:36:06 localhost kernel:  __driver_attach+0xbb/0x190
> > > Jul 05 18:36:06 localhost kernel:  ? __device_attach_driver+0xe0/0xe0
> > > Jul 05 18:36:06 localhost kernel:  bus_for_each_dev+0x72/0xb0
> > > Jul 05 18:36:06 localhost kernel:  bus_add_driver+0x159/0x200
> > > Jul 05 18:36:06 localhost kernel:  driver_register+0x89/0xd0
> > > Jul 05 18:36:06 localhost kernel:  ? 0xffffffffc1113000
> > > Jul 05 18:36:06 localhost kernel:  do_one_initcall+0x44/0x200
> > > Jul 05 18:36:06 localhost kernel:  ? kmem_cache_alloc_trace+0x177/0x350
> > > Jul 05 18:36:06 localhost kernel:  do_init_module+0x4a/0x250
> > > Jul 05 18:36:06 localhost kernel:  __do_sys_init_module+0x138/0x1b0
> > > Jul 05 18:36:06 localhost kernel:  do_syscall_64+0x5b/0x80
> > > Jul 05 18:36:06 localhost kernel:  ? __vm_munmap+0x90/0x110
> > > Jul 05 18:36:06 localhost kernel:  ? syscall_exit_to_user_mode+0x17/0x40
> > > Jul 05 18:36:06 localhost kernel:  ? do_syscall_64+0x67/0x80
> > > Jul 05 18:36:06 localhost kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xae
> > > Jul 05 18:36:06 localhost kernel: RIP: 0033:0x7f11153a202e
> > > Jul 05 18:36:06 localhost kernel: Code: 48 8b 0d fd 9d 0e 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d ca 9d 0e 00 f7 d8 64 89 01 48
> > > Jul 05 18:36:06 localhost kernel: RSP: 002b:00007ffd92dad4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
> > > Jul 05 18:36:06 localhost kernel: RAX: ffffffffffffffda RBX: 0000562b842b8ef0 RCX: 00007f11153a202e
> > > Jul 05 18:36:06 localhost kernel: RDX: 0000562b842b9370 RSI: 00000000010cd35f RDI: 00007f11128c7010
> > > Jul 05 18:36:06 localhost kernel: RBP: 0000562b842b9370 R08: 0000000000261000 R09: 85ebca77c2b2ae63
> > > Jul 05 18:36:06 localhost kernel: R10: 00000000000331a1 R11: 0000000000000246 R12: 0000000000020000
> > > Jul 05 18:36:06 localhost kernel: R13: 0000000000000000 R14: 0000562b842fa050 R15: 0000562b842b9370
> > > Jul 05 18:36:06 localhost kernel:  </TASK>
> > > Jul 05 18:36:06 localhost kernel: Modules linked in: amdgpu(+) crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd sp5100_tco xhci_pci xhci_pci_renesas ccp nvme xhci_hcd nvme_core drm_ttm_helper ttm usbcore iommu_v2 gpu_sched drm_dp_helper video wmi btrfs blake2b_generic libcrc32c crc32c_intel xor raid6_pq l2tp_ppp l2tp_netlink l2tp_core ip6_udp_tunnel udp_tunnel pppox ppp_generic slhc v4l2loopback(OE) videodev mc sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
> > > Jul 05 18:36:06 localhost kernel: CR2: 0000000000000008
> > > Jul 05 18:36:06 localhost kernel: ---[ end trace 0000000000000000 ]---
> > > Jul 05 18:36:06 localhost kernel: RIP: 0010:kernfs_find_and_get_ns+0x11/0x70
> > > Jul 05 18:36:06 localhost kernel: Code: 08 48 83 40 40 01 49 8b 46 08 48 83 40 58 01 31 c0 eb d1 66 0f 1f 44 00 00 0f 1f 44 00 00 41 55 49 89 d5 41 54 49 89 f4 55 53 <48> 8b 47 08 48 89 fb 48 85 c0 48 0f 44 c7 48 8b 68 50 48 83 c5 60
> > > Jul 05 18:36:06 localhost kernel: RSP: 0018:ffffa5a802083a38 EFLAGS: 00010246
> > > Jul 05 18:36:06 localhost kernel: RAX: 0000000000000000 RBX: ffffffffb119fc20 RCX: ffffa5a802083a10
> > > Jul 05 18:36:06 localhost kernel: RDX: 0000000000000000 RSI: ffffffffb119fd68 RDI: 0000000000000000
> > > Jul 05 18:36:06 localhost kernel: RBP: 0000000000000000 R08: 0000000000000040 R09: 00000000fcf00000
> > > Jul 05 18:36:06 localhost kernel: R10: 0000000000000000 R11: ffff88c0c77e829c R12: ffffffffb119fd68
> > > Jul 05 18:36:06 localhost kernel: R13: 0000000000000000 R14: ffff88c0d0c8d7c0 R15: 0000000000000000
> > > Jul 05 18:36:06 localhost kernel: FS:  00007f1114895b00(0000) GS:ffff88c7ceac0000(0000) knlGS:0000000000000000
> > > Jul 05 18:36:06 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > Jul 05 18:36:06 localhost kernel: CR2: 0000000000000008 CR3: 0000000107a46000 CR4: 00000000003506e0
> 
> Thank you so much for this stacktrace. This looks like a problem that we
> recently fixed in the upstream kernel. Yesterday, I backported the patch
> into out stable branch. So this problem should be fixed in the next kernel
> update.
Upcoming TW snapshot has kernel 5.18.9, including the aforementioned the patch?

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