470.94 watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [chrome:6272]

OpenSUSE Tumbleweed 20220103
kernel 5.16.2-1-default
nvidia driver 470.94
google-chrome-stable-97.0.4692.99-1

Mouse click in a chrome window locked up the desktop. The system was still reachable via ssh, so I could preserve the logs. Thes the reboot command failed, system stayed locked up.

From the systemd-journal:

Feb 01 12:07:24 kosmos1 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [chrome:6272]
Feb 01 12:07:24 kosmos1 kernel: Modules linked in: rpcsec_gss_krb5 af_packet nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_r>
Feb 01 12:07:31 kosmos1 kernel:  snd_intel_sdw_acpi r8169 rc_core i2c_piix4 snd_hda_codec syscopyarea sysfillrect realtek mdio_devres sysimgblt fb_sys_fops snd_hda_core libphy tiny_power_>
Feb 01 12:07:31 kosmos1 kernel: CPU: 0 PID: 6272 Comm: chrome Tainted: P           OE     5.16.2-1-default #1 openSUSE Tumbleweed b40a195b7ff0f3399a616c3290f963c4ad189e84
Feb 01 12:07:31 kosmos1 kernel: Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 EVO, BIOS 1604 10/16/2012
Feb 01 12:07:31 kosmos1 kernel: RIP: 0010:_nv035891rm+0xaa/0xe0 [nvidia]
Feb 01 12:07:31 kosmos1 kernel: Code: 49 8b 4c 24 20 48 89 c2 48 89 ef 48 8d b1 48 01 00 00 4c 89 e9 e8 86 5b ff ff 66 0f 1f 44 00 00 48 89 ef e8 e8 5b ff ff 84 c0 <74> 8a 48 8b 75 00 48 >
Feb 01 12:07:31 kosmos1 kernel: RSP: 0018:ffffa1ed4565fb40 EFLAGS: 00000202
Feb 01 12:07:31 kosmos1 kernel: RAX: 0000000000000001 RBX: ffff96764f288430 RCX: ffff96753be01178
Feb 01 12:07:31 kosmos1 kernel: RDX: ffffddd3c6b356c8 RSI: ffffddd3c6b378f5 RDI: ffff96739e7f2d20
Feb 01 12:07:31 kosmos1 kernel: RBP: ffff96739e7f2d20 R08: 0000000000000020 R09: ffff96739e7f2d28
Feb 01 12:07:31 kosmos1 kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff96739e794438
Feb 01 12:07:31 kosmos1 kernel: R13: ffffddd3caefa66d R14: ffff96739e7f2d98 R15: ffff96764f288430
Feb 01 12:07:31 kosmos1 kernel: FS:  00007f6aefa15e00(0000) GS:ffff9676aec00000(0000) knlGS:0000000000000000
Feb 01 12:07:31 kosmos1 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Feb 01 12:07:31 kosmos1 kernel: CR2: 0000561b4c386f20 CR3: 0000000239610000 CR4: 00000000000406f0
Feb 01 12:07:31 kosmos1 kernel: Call Trace:
Feb 01 12:07:31 kosmos1 kernel:  <TASK>
Feb 01 12:07:31 kosmos1 kernel:  ? _nv014660rm+0x2ee/0x770 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? _nv037748rm+0xb3/0x150 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? _nv037747rm+0x297/0x4e0 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? _nv037742rm+0x60/0x70 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? _nv037743rm+0x7b/0xb0 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? _nv036103rm+0x40/0xe0 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? _nv000699rm+0x68/0x80 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? rm_cleanup_file_private+0xea/0x160 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? nvidia_close+0x150/0x310 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? nvidia_frontend_close+0x2b/0x50 [nvidia 34b1cf319600eafc7c9f2d117983f98ef8ab404f]
Feb 01 12:07:31 kosmos1 kernel:  ? __fput+0x94/0x250
Feb 01 12:07:31 kosmos1 kernel:  ? task_work_run+0x5c/0x90
Feb 01 12:07:31 kosmos1 kernel:  ? do_exit+0x374/0xa90
Feb 01 12:07:31 kosmos1 kernel:  ? do_group_exit+0x33/0xa0
Feb 01 12:07:31 kosmos1 kernel:  ? __x64_sys_exit_group+0x14/0x20
Feb 01 12:07:31 kosmos1 kernel:  ? do_syscall_64+0x5c/0x80
Feb 01 12:07:31 kosmos1 kernel:  ? do_syscall_64+0x69/0x80
Feb 01 12:07:31 kosmos1 kernel:  ? handle_mm_fault+0xb2/0x280
Feb 01 12:07:31 kosmos1 kernel:  ? do_user_addr_fault+0x1d7/0x690
Feb 01 12:07:31 kosmos1 kernel:  ? exc_page_fault+0x68/0x150
Feb 01 12:07:31 kosmos1 kernel:  ? entry_SYSCALL_64_after_hwframe+0x44/0xae
Feb 01 12:07:31 kosmos1 kernel:  </TASK>
Feb 01 12:07:52 kosmos1 kernel: watchdog: BUG: soft lockup - CPU#0 stuck for 52s! [chrome:6272]

The xorg-session.log contained the following unusual lines:

[0201/120719.086800:WARNING:exception_snapshot_linux.cc(427)] Unhandled signal -1
[3329:5990:0201/121318.047661:ERROR:get_updates_processor.cc(260)] PostClientToServerMessage() failed during GetUpdates with error 2

The system had previously been stable for some months. I’ve reverted to kernel 5.16.1-1-default for the moment (same driver and chrome).