I just saw this bug on my work laptop. The desktop froze and only the mouse
pointer was responsive. I connected to the laptop from another machine and
noticed that Xorg was a zombie process. I also saw the following kernel
messages:


[ 8550.326847] pcieport 0000:00:08.1: PME: Spurious native interrupt!
[13172.962208] BUG: kernel NULL pointer dereference, address: 0000000000000000
[13172.962228] #PF: supervisor read access in kernel mode
[13172.962235] #PF: error_code(0x0000) - not-present page
[13172.962243] PGD 0 P4D 0 
[13172.962255] Oops: 0000 [#1] PREEMPT SMP NOPTI
[13172.962266] CPU: 11 PID: 2019 Comm: Xorg.bin Not tainted 6.7.1-2-default #1
openSUSE Tumbleweed d50116cfdb1b14a701e904c894d8f1c040bf1146
[13172.962281] Hardware name: LENOVO 20XGS0V508/20XGS0V508, BIOS R1NET47W
(1.17) 12/21/2021
[13172.962289] RIP: 0010:drm_mode_rmfb+0xb6/0x1c0
[13172.962308] Code: 00 00 4c 89 ef e8 7a 0e 3e 00 48 8b 83 98 00 00 00 48 2d
98 00 00 00 48 39 c3 0f 84 eb 00 00 00 31 d2 b9 01 00 00 00 4c 39 e0 <48> 8b 80
98 00 00 00 0f 44 d1 48 2d 98 00 00 00 48 39 c3 75 e8 85
[13172.962317] RSP: 0018:ffffa86fc2bbfc80 EFLAGS: 00010202
[13172.962327] RAX: ffffffffffffff68 RBX: ffff941bc60f1800 RCX:
0000000000000001
[13172.962334] RDX: 0000000000000001 RSI: ffff941bc2004920 RDI:
ffff941bc60f18a8
[13172.962341] RBP: ffff941e7352b318 R08: ffff941bc2004b18 R09:
ffff941c88c80200
[13172.962347] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff941e7352b300
[13172.962354] R13: ffff941bc60f18a8 R14: ffffa86fc2bbfd68 R15:
0000000000000004
[13172.962361] FS:  00007faa06805980(0000) GS:ffff941e9ef80000(0000)
knlGS:0000000000000000
[13172.962368] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[13172.962374] CR2: 0000000000000000 CR3: 00000001045ce000 CR4:
0000000000750ef0
[13172.962379] PKRU: 55555554
[13172.962384] Call Trace:
[13172.962390]  <TASK>
[13172.962403]  ? __die+0x23/0x70
[13172.962423]  ? page_fault_oops+0x14d/0x490
[13172.962434]  ? ttwu_queue_wakelist+0xef/0x110
[13172.962446]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.962468]  ? exc_page_fault+0x71/0x160
[13172.962480]  ? asm_exc_page_fault+0x26/0x30
[13172.962495]  ? drm_mode_rmfb+0xb6/0x1c0
[13172.962508]  ? __pfx_drm_mode_rmfb_ioctl+0x10/0x10
[13172.962516]  drm_ioctl_kernel+0xce/0x170
[13172.962525]  ? __pfx_drm_mode_page_flip_ioctl+0x10/0x10
[13172.962543]  drm_ioctl+0x256/0x490
[13172.962552]  ? __pfx_drm_mode_rmfb_ioctl+0x10/0x10
[13172.962561]  ? __pfx_drm_mode_page_flip_ioctl+0x10/0x10
[13172.962580]  amdgpu_drm_ioctl+0x4e/0x90 [amdgpu
c19de16ba0fd72478b307639f09a9c13c52c8d28]
[13172.963085]  __x64_sys_ioctl+0x97/0xd0
[13172.963098]  do_syscall_64+0x64/0xe0
[13172.963108]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963116]  ? syscall_exit_to_user_mode+0x2b/0x40
[13172.963122]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963129]  ? do_syscall_64+0x70/0xe0
[13172.963137]  ? switch_fpu_return+0x50/0xe0
[13172.963147]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963154]  ? exit_to_user_mode_prepare+0x142/0x1f0
[13172.963165]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963172]  ? syscall_exit_to_user_mode+0x2b/0x40
[13172.963178]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963185]  ? do_syscall_64+0x70/0xe0
[13172.963192]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963199]  ? do_syscall_64+0x70/0xe0
[13172.963206]  ? syscall_exit_to_user_mode+0x2b/0x40
[13172.963212]  ? srso_alias_return_thunk+0x5/0xfbef5
[13172.963219]  ? do_syscall_64+0x70/0xe0
[13172.963227]  ? __irq_exit_rcu+0x3b/0xb0
[13172.963242]  entry_SYSCALL_64_after_hwframe+0x6e/0x76
[13172.963254] RIP: 0033:0x7faa067139ef
[13172.963332] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00
00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d
00 f0 ff ff 77 18 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[13172.963338] RSP: 002b:00007fff5e104280 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[13172.963346] RAX: ffffffffffffffda RBX: 00005608e31df550 RCX:
00007faa067139ef
[13172.963351] RDX: 00007fff5e10431c RSI: 00000000c00464af RDI:
000000000000000e
[13172.963355] RBP: 00007fff5e10431c R08: 00000005608e3575 R09:
0000000000000007
[13172.963360] R10: 00005608e35751a0 R11: 0000000000000246 R12:
00000000c00464af
[13172.963364] R13: 000000000000000e R14: 00005608e12f3ff0 R15:
0000000000000040
[13172.963377]  </TASK>
[13172.963381] Modules linked in: tun rfcomm nf_conntrack_netbios_ns
nf_conntrack_broadcast ccm af_packet nft_fib_inet nft_fib_ipv4 nft_fib_ipv6
nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct
nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables
nfnetlink qrtr cmac algif_hash algif_skcipher af_alg bnep msr binfmt_misc
snd_acp_legacy_mach snd_acp_mach snd_soc_nau8821 nls_iso8859_1 snd_soc_dmic
snd_acp3x_pdm_dma snd_acp3x_rn snd_sof_amd_acp63 nls_cp437 snd_sof_amd_vangogh
snd_sof_amd_rembrandt snd_sof_amd_renoir vfat snd_sof_amd_acp fat snd_ctl_led
snd_sof_pci snd_sof_xtensa_dsp snd_hda_codec_realtek mt7921e snd_sof
mt7921_common snd_hda_codec_generic btusb mt792x_lib snd_sof_utils btrtl
mt76_connac_lib snd_hda_codec_hdmi btintel uvcvideo snd_soc_core intel_rapl_msr
btbcm intel_rapl_common mt76 videobuf2_vmalloc btmtk snd_compress uvc
snd_pcm_dmaengine snd_hda_intel videobuf2_memops edac_mce_amd bluetooth
videobuf2_v4l2 snd_pci_ps snd_intel_dspcfg snd_intel_sdw_acpi
[13172.963548]  snd_rpl_pci_acp6x mac80211 videodev r8169 snd_acp_pci libarc4
thinkpad_acpi kvm_amd snd_acp_legacy_common snd_hda_codec snd_pci_acp6x
videobuf2_common snd_pci_acp5x snd_hda_core realtek ecdh_generic mc
ledtrig_audio snd_hwdep kvm mdio_devres cfg80211 snd_rn_pci_acp3x snd_pcm
think_lmi platform_profile snd_acp_config irqbypass firmware_attributes_class
snd_timer snd_soc_acpi wmi_bmof tiny_power_button efi_pstore libphy rfkill
k10temp snd_pci_acp3x i2c_piix4 snd thermal soundcore ac joydev button
nvme_fabrics fuse configfs dmi_sysfs ip_tables x_tables usbhid amdgpu
crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
ghash_clmulni_intel sha512_ssse3 sha256_ssse3 sha1_ssse3 amdxcp i2c_algo_bit
drm_ttm_helper ttm drm_exec gpu_sched nvme drm_suballoc_helper xhci_pci
drm_buddy xhci_pci_renesas ucsi_acpi hid_multitouch drm_display_helper
nvme_core xhci_hcd aesni_intel cec typec_ucsi video hid_generic nvme_auth
crypto_simd cryptd usbcore ccp roles rc_core t10_pi typec sp5100_tco battery
[13172.963741]  i2c_hid_acpi wmi i2c_hid serio_raw btrfs blake2b_generic
libcrc32c crc32c_intel xor raid6_pq br_netfilter bridge stp llc efivarfs
[13172.963781] CR2: 0000000000000000
[13172.963787] ---[ end trace 0000000000000000 ]---
[13172.963792] RIP: 0010:drm_mode_rmfb+0xb6/0x1c0
[13172.963801] Code: 00 00 4c 89 ef e8 7a 0e 3e 00 48 8b 83 98 00 00 00 48 2d
98 00 00 00 48 39 c3 0f 84 eb 00 00 00 31 d2 b9 01 00 00 00 4c 39 e0 <48> 8b 80
98 00 00 00 0f 44 d1 48 2d 98 00 00 00 48 39 c3 75 e8 85
[13172.963807] RSP: 0018:ffffa86fc2bbfc80 EFLAGS: 00010202
[13172.963813] RAX: ffffffffffffff68 RBX: ffff941bc60f1800 RCX:
0000000000000001
[13172.963818] RDX: 0000000000000001 RSI: ffff941bc2004920 RDI:
ffff941bc60f18a8
[13172.963822] RBP: ffff941e7352b318 R08: ffff941bc2004b18 R09:
ffff941c88c80200
[13172.963827] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff941e7352b300
[13172.963831] R13: ffff941bc60f18a8 R14: ffffa86fc2bbfd68 R15:
0000000000000004
[13172.963836] FS:  00007faa06805980(0000) GS:ffff941e9ef80000(0000)
knlGS:0000000000000000
[13172.963841] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[13172.963846] CR2: 0000000000000000 CR3: 00000001045ce000 CR4:
0000000000750ef0
[13172.963851] PKRU: 55555554
[13172.963856] note: Xorg.bin[2019] exited with irqs disabled