Just saw an instance on 25.04: [ 755.047861] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 755.054962] #PF: supervisor read access in kernel mode [ 755.060202] #PF: error_code(0x0000) - not-present page [ 755.065528] PGD 1439ab067 P4D 0 [ 755.068867] Oops: Oops: 0000 [#1] SMP NOPTI [ 755.073160] CPU: 2 UID: 0 PID: 0 Comm: swapper/2 Not tainted 6.14.0-1021-gcp #22~24.04.1-Ubuntu [ 755.081959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/24/2025 [ 755.091278] RIP: 0010:l3mdev_fib_table_rcu+0x1e/0x60 [ 755.096347] Code: 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 48 85 ff 74 49 55 8b 07 48 89 e5 a9 00 00 04 00 74 1c 48 8b 87 f8 02 00 00 <48> 8b 00 48 85 c0 74 14 ff d0 0f 1f 00 5d 31 ff c3 cc cc cc cc a9 [ 755.115215] RSP: 0018:ff3e691e40148b18 EFLAGS: 00010206 [ 755.120551] RAX: 0000000000000000 RBX: ff27868fd5114c00 RCX: 0000000000000000 [ 755.127811] RDX: 00000000060011ac RSI: ff278691ea3ec000 RDI: ff278691ea3ec000 [ 755.135044] RBP: ff3e691e40148b18 R08: 0000000000000000 R09: 0000000000000000 [ 755.142279] R10: 0000000000000000 R11: ff27868fc3a62d80 R12: 00000000060011ac [ 755.149543] R13: ff3e691e40148cb0 R14: ff278691ea3ec000 R15: ff27868fc3a62d80 [ 755.156802] FS: 0000000000000000(0000) GS:ff278692efd00000(0000) knlGS:0000000000000000 [ 755.165004] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 755.170893] CR2: 0000000000000000 CR3: 0000000120598006 CR4: 0000000000371ef0 [ 755.178131] Call Trace: [ 755.180680] <IRQ> [ 755.182798] inet_addr_type_dev_table+0x1a/0x50 [ 755.187431] icmp_route_lookup.constprop.0+0x182/0x450 [ 755.192690] __icmp_send+0x47a/0x800 [ 755.196585] ipv4_send_dest_unreach+0xd3/0x1a0 [ 755.201132] ipv4_link_failure+0x12/0x70 [ 755.205166] arp_error_report+0x36/0x60 [ 755.209119] neigh_invalidate+0x7d/0x140 [ 755.213175] ? __pfx_neigh_timer_handler+0x10/0x10 [ 755.218069] neigh_timer_handler+0x2df/0x330 [ 755.222465] ? __pfx_neigh_timer_handler+0x10/0x10 [ 755.227362] call_timer_fn+0x2c/0x120 [ 755.231213] __run_timers+0x22d/0x290 [ 755.234979] run_timer_softirq+0x93/0x120 [ 755.239093] handle_softirqs+0xe4/0x310 [ 755.243044] __irq_exit_rcu+0x10e/0x130 [ 755.246982] irq_exit_rcu+0xe/0x20 [ 755.250487] sysvec_apic_timer_interrupt+0xa0/0xc0 [ 755.255491] </IRQ> [ 755.257691] <TASK> [ 755.259900] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 755.265147] RIP: 0010:pv_native_safe_halt+0xb/0x10 [ 755.270042] Code: 22 d7 31 ff c3 cc cc cc cc 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 eb 07 0f 00 2d 49 92 10 00 fb f4 <c3> cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 83 [ 755.289082] RSP: 0018:ff3e691e400cfe60 EFLAGS: 00000246 [ 755.294410] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 755.301643] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 755.308933] RBP: ff3e691e400cfe68 R08: 0000000000000000 R09: 0000000000000000 [ 755.316179] R10: 0000000000000000 R11: 0000000000000000 R12: ff27868fc09c0000 [ 755.323414] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 755.330694] ? default_idle+0x9/0x30 [ 755.334389] arch_cpu_idle+0x9/0x10 [ 755.337979] default_idle_call+0x30/0xd0 [ 755.342097] cpuidle_idle_call+0x14f/0x190 [ 755.346306] do_idle+0x7f/0xe0 [ 755.349508] cpu_startup_entry+0x29/0x30 [ 755.353531] start_secondary+0x129/0x160 [ 755.357558] common_startup_64+0x13e/0x141 [ 755.361903] </TASK> [ 755.364193] Modules linked in: xt_multiport vxlan xt_nat dummy xt_tcpudp ip6t_REJECT nf_reject_ipv6 xt_connmark ip6table_raw ip6table_nat ip6table_filter ipt_REJECT nf_reject_ipv4 xt_CT iptable_raw iptable_nat ip_set wireguard curve25519_x86_64 libchacha20poly1305 chacha_x86_64 poly1305_x86_64 ip6_udp_tunnel udp_tunnel libcurve25519_generic libchacha xt_mark iptable_mangle ip6table_mangle ip6_tables iptable_filter xt_comment veth tls ipip tunnel4 ip_tunnel xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat bridge xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables overlay 8021q garp mrp stp llc binfmt_misc nls_iso8859_1 polyval_clmulni polyval_generic ghash_clmulni_intel sha256_ssse3 sha1_ssse3 aesni_intel crypto_simd cryptd psmouse gve input_leds serio_raw sch_fq_codel dm_multipath nvme_fabrics efi_pstore dmi_sysfs virtio_rng ip_tables x_tables autofs4 [ 755.439722] CR2: 0000000000000000 [ 755.443145] ---[ end trace 0000000000000000 ]--- [ 755.651516] RIP: 0010:l3mdev_fib_table_rcu+0x1e/0x60 [ 755.656601] Code: 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 48 85 ff 74 49 55 8b 07 48 89 e5 a9 00 00 04 00 74 1c 48 8b 87 f8 02 00 00 <48> 8b 00 48 85 c0 74 14 ff d0 0f 1f 00 5d 31 ff c3 cc cc cc cc a9 [ 755.675513] RSP: 0018:ff3e691e40148b18 EFLAGS: 00010206 [ 755.680840] RAX: 0000000000000000 RBX: ff27868fd5114c00 RCX: 0000000000000000 [ 755.688073] RDX: 00000000060011ac RSI: ff278691ea3ec000 RDI: ff278691ea3ec000 [ 755.695307] RBP: ff3e691e40148b18 R08: 0000000000000000 R09: 0000000000000000 [ 755.702538] R10: 0000000000000000 R11: ff27868fc3a62d80 R12: 00000000060011ac [ 755.709774] R13: ff3e691e40148cb0 R14: ff278691ea3ec000 R15: ff27868fc3a62d80 [ 755.717011] FS: 0000000000000000(0000) GS:ff278692efd00000(0000) knlGS:0000000000000000 [ 755.725203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 755.731075] CR2: 0000000000000000 CR3: 0000000120598006 CR4: 0000000000371ef0 [ 755.738403] Kernel panic - not syncing: Fatal exception in interrupt [ 755.745117] Kernel Offset: 0x20c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 755.943639] Rebooting in 10 seconds..
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2134472 Title: Kernel panic, NULL pointer in l3mdev_fib_table_rcu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-gcp-6.14/+bug/2134472/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
