I am noticing this bug, it triggers an instant reboot -
8483.199122] BUG: unable to handle kernel paging request at ffffffff81788390
8483.199136] IP: native_queued_spin_lock_slowpath+0x161/0x190
8483.199142] PGD 300e067 P4D 300e067 PUD 300f063 PMD 26000e1
8483.199150] Oops: 0003 #1] SMP PTI
8483.199157] CPU: 0 PID: 11299 Comm: (-localed) Tainted: P O 4.12.14-lp151.28.36-default #1 openSUSE Leap 15.1
8483.199164] Hardware name: System manufacturer System Product Name/XXXXXXXXXX, BIOS 0511 07/06/2015
8483.199170] task: ffff88012a33e1c0 task.stack: ffffc90008424000
8483.199177] RIP: 0010:native_queued_spin_lock_slowpath+0x161/0x190
8483.199183] RSP: 0018:ffffc90008427d08 EFLAGS: 00010286
8483.199190] RAX: ffffffff81788390 RBX: ffff88010c4aa800 RCX: ffff88021ec250c0
8483.199196] RDX: 0000000000003ffe RSI: 00000000ffff8801 RDI: ffff88010c798084
8483.199202] RBP: ffff8801f1fc3300 R08: 0000000000040000 R09: ffff88011f539280
8483.199208] R10: 0000000000000468 R11: 0000000000000000 R12: 0000000000000000
8483.199214] R13: ffff88021eddca20 R14: 0000000000000001 R15: ffff88010c798084
8483.199221] FS: 00007f0c11669940(0000) GS:ffff88021ec00000(0000) knlGS:0000000000000000
8483.199227] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
8483.199233] CR2: ffffffff81788390 CR3: 000000010620c005 CR4: 00000000001606f0
8483.199239] Call Trace:
8483.199249] _raw_spin_lock_bh+0x28/0x30
8483.199256] netlink_insert+0xee/0x2d0
8483.199264] __netlink_kernel_create+0xe7/0x230
8483.199272] nfnetlink_net_init+0x5e/0x80 [nfnetlink]
8483.199279] ? nfnl_err_reset+0x60/0x60 [nfnetlink]
8483.199286] ? nfnetlink_net_init+0x80/0x80 [nfnetlink]
8483.199293] ops_init+0x40/0x120
8483.199300] setup_net+0x9c/0x130
8483.199306] copy_net_ns+0xc9/0x200
8483.199314] create_new_namespaces+0x11c/0x1b0
8483.199321] unshare_nsproxy_namespaces+0x59/0xb0
8483.199328] SyS_unshare+0x1d2/0x370
8483.199336] do_syscall_64+0x7b/0x160
8483.199342] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
8483.199348] RIP: 0033:0x7f0c0fc3a4d7
8483.199354] RSP: 002b:00007fff7e792ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
8483.199361] RAX: ffffffffffffffda RBX: 000055f49505bc28 RCX: 00007f0c0fc3a4d7
8483.199367] RDX: fffffffffffffdd8 RSI: 00007fff7e792c40 RDI: 0000000040000000
8483.199373] RBP: 00007fff7e792e30 R08: 0000000000000000 R09: 0000000000000002
8483.199379] R10: 00007fff7e792bf0 R11: 0000000000000246 R12: 00000000fffffff5
8483.199385] R13: 000055f494f86c40 R14: 00007fff7e792ed4 R15: 0000000000000000
8483.199391] Code: c3 f3 90 4c 8b 09 4d 85 c9 74 f6 eb d2 c1 ea 12 83 e0 03 83 ea 01 48 c1 e0 04 48 63 d2 48 05 c0 50 02 00 48 03 04 d5 00 e5 ed 81 <48> 89 08 8b 41 08 85 c0 75 09 f3 90 8b 41 08 85 c0 74 f7 4c 8b
8483.199421] Modules linked in: nf_log_ipv6 nf_log_ipv4 nf_log_common ip6table_mangle ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_filter ip6_tables iptable_mangle iptable_nat nf_nat_ipv4 iptable_filter ip_tables scsi_transport_iscsi xt_SYSRQ(O) xt_quota2(O) xt_psd(O) xt_pknock(O) xt_lscan(O) xt_LOGMARK(O) xt_length2(O) xt_ipv4options(O) xt_ipp2p(O) xt_IPMARK(O) xt_iface(O) xt_fuzzy(O) xt_ECHO(O) xt_DNETMAP(O) nf_nat xt_DHCPMAC(O) xt_condition(O) xt_DELUDE(O) xt_TARPIT(O) ipt_REJECT xt_tcpudp xt_CHAOS(O) xt_ACCOUNT(O) compat_xtables(O) af_packet br_netfilter bridge stp llc iscsi_ibft iscsi_boot_sysfs dmi_sysfs msr tcp_htcp xt_state xt_conntrack xt_LOG xt_geoip(O) x_tables pf_ring(O) nfnetlink nf_conntrack_ftp nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack libcrc32c nls_iso8859_1
8483.199482] nls_cp437 vfat fat snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic eeepc_wmi ledtrig_audio asus_wmi sparse_keymap rfkill snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm iTCO_wdt iTCO_vendor_support intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_timer ppdev kvm_intel r8169 snd kvm thermal joydev pcspkr mei_me mii irqbypass wmi_bmof mei i2c_i801 ie31200_edac pcc_cpufreq lpc_ich soundcore parport_pc parport fan sg dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua dm_crypt aes_x86_64 algif_skcipher af_alg hid_generic usbhid nvidia_drm(PO) nvidia_modeset(PO) nvidia_uvm(O) crc32_pclmul crc32c_intel nvidia(PO) ghash_clmulni_intel cryptd drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ehci_pci ahci ehci_hcd libahci usbcore drm drm_panel_orientation_quirks
8483.199548] ipmi_devintf ipmi_msghandler wmi button video dm_mirror dm_region_hash dm_log dm_mod efivarfs [last unloaded: netmap]
8483.199564] CR2: ffffffff81788390
I’ve vmcore, System.map, etc but crash fails to determine idle task addresses from init_tasks] or runqueues]
# crash /boot/vmlinux-4.12.14-lp151.28.36-debug.gz /var/crash/2020-01-11-08\:27/vmcore -S /boot/System.map-4.12.14-lp151.28.36-default
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crash: cannot determine idle task addresses from init_tasks] or runqueues]
crash: cannot resolve "init_task_union"