[ 31.176289] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.184411] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 31.194351] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 31.202270] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 31.321580] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 31.422358] syz-executor.0 (7997) used greatest stack depth: 24032 bytes left [ 31.791541] can: request_module (can-proto-0) failed. [ 31.801537] can: request_module (can-proto-0) failed. [ 31.810501] can: request_module (can-proto-0) failed. [ 41.624544] unregister_netdevice: waiting for ip6gre0 to become free. Usage count = -1 Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. [ 50.426253] ------------[ cut here ]------------ [ 50.431443] WARNING: CPU: 0 PID: 8348 at include/net/sock.h:1520 strp_data_ready+0x270/0x300 [ 50.440919] Kernel panic - not syncing: panic_on_warn set ... [ 50.440919] [ 50.448470] CPU: 0 PID: 8348 Comm: syz-executor168 Not tainted 4.14.271-syzkaller #0 [ 50.456570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.466246] Call Trace: [ 50.469114] [ 50.471654] dump_stack+0x14b/0x1e7 [ 50.475760] ? strp_data_ready+0x270/0x300 [ 50.480095] panic+0x1b0/0x358 [ 50.483347] ? add_taint.cold.4+0x11/0x11 [ 50.487520] ? strp_data_ready+0x270/0x300 [ 50.492045] __warn.cold.7+0x25/0x25 [ 50.495816] ? strp_data_ready+0x270/0x300 [ 50.501387] report_bug+0x1a1/0x200 [ 50.505034] ? debug_smp_processor_id+0x17/0x20 [ 50.510256] do_error_trap+0x1bd/0x310 [ 50.514160] ? math_error+0x300/0x300 [ 50.517974] ? trace_hardirqs_on+0x10/0x10 [ 50.522306] ? trace_hardirqs_on+0x10/0x10 [ 50.526730] ? __netif_receive_skb_core+0x1d03/0x2fe0 [ 50.532131] ? __netif_receive_skb+0x1f/0x1b0 [ 50.536669] ? process_backlog+0x220/0x710 [ 50.541015] ? net_rx_action+0x42d/0xe20 [ 50.545340] ? __do_softirq+0x247/0x9a2 [ 50.549532] ? do_softirq_own_stack+0x2a/0x40 [ 50.554050] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.559344] do_invalid_op+0x1b/0x20 [ 50.563086] invalid_op+0x1b/0x40 [ 50.566823] RIP: 0010:strp_data_ready+0x270/0x300 [ 50.571959] RSP: 0018:ffff8880ba607708 EFLAGS: 00010202 [ 50.577429] RAX: 0000000000000001 RBX: ffff8880ae0a5388 RCX: ffffed10126235a0 [ 50.584896] RDX: 0000000000000004 RSI: 0000000000000000 RDI: ffffffff893d18a0 [ 50.592633] RBP: ffff8880ba607730 R08: 1ffff110126235a0 R09: 0000000000000001 [ 50.599915] R10: 0000000000000000 R11: ffff88809311a480 R12: ffff8880b37700c0 [ 50.607196] R13: ffff8880ae0a5390 R14: ffff8880b3770248 R15: ffff8880b3770260 [ 50.614798] ? strp_data_ready+0x22d/0x300 [ 50.619302] psock_data_ready+0x4c/0x60 [ 50.623652] __sock_queue_rcv_skb+0x4e7/0xb60 [ 50.628312] sock_queue_rcv_skb+0x26/0x30 [ 50.632603] rawv6_rcv+0x45d/0xf10 [ 50.636196] ? skb_clone+0x162/0x2d0 [ 50.640054] raw6_local_deliver+0x3cc/0xaf0 [ 50.644395] ? rawv6_rcv+0xf10/0xf10 [ 50.648243] ? ip6_rcv_finish+0x6d0/0x6d0 [ 50.652407] ip6_input_finish+0x3b9/0x1470 [ 50.656748] ip6_input+0xbe/0x2d0 [ 50.660209] ? ip6_input_finish+0x1470/0x1470 [ 50.664729] ? ip6_rcv_finish+0x6d0/0x6d0 [ 50.668904] ? ipv6_rcv+0x1372/0x2160 [ 50.672715] ? lock_downgrade+0x7f0/0x7f0 [ 50.676872] ip6_rcv_finish+0x1f3/0x6d0 [ 50.680988] ipv6_rcv+0xe92/0x2160 [ 50.684917] ? ip6_input+0x2d0/0x2d0 [ 50.688647] ? ip6_make_skb+0x4a0/0x4a0 [ 50.692644] ? ip6_input+0x2d0/0x2d0 [ 50.696498] __netif_receive_skb_core+0x1d03/0x2fe0 [ 50.701580] ? trace_hardirqs_on+0x10/0x10 [ 50.705869] ? flush_backlog+0x730/0x730 [ 50.709962] ? trace_hardirqs_on+0x10/0x10 [ 50.714320] ? lock_downgrade+0x7f0/0x7f0 [ 50.718569] ? lock_downgrade+0x7f0/0x7f0 [ 50.723024] ? lock_repin_lock+0x5a0/0x5a0 [ 50.727466] ? lock_acquire+0x17e/0x3e0 [ 50.731630] __netif_receive_skb+0x1f/0x1b0 [ 50.736052] ? __netif_receive_skb+0x1f/0x1b0 [ 50.740602] process_backlog+0x220/0x710 [ 50.744884] net_rx_action+0x42d/0xe20 [ 50.748967] ? napi_complete_done+0x470/0x470 [ 50.753603] __do_softirq+0x247/0x9a2 [ 50.757617] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.762487] ? ip6_finish_output2+0xc72/0x2070 [ 50.767199] do_softirq_own_stack+0x2a/0x40 [ 50.771657] [ 50.774145] do_softirq+0xee/0x160 [ 50.777705] __local_bh_enable_ip+0x130/0x150 [ 50.782733] ip6_finish_output2+0xc9b/0x2070 [ 50.787372] ? ip6_forward_finish+0x420/0x420 [ 50.792321] ip6_finish_output+0x54f/0xcc0 [ 50.796666] ip6_output+0x1b3/0x610 [ 50.800381] ? ip6_finish_output+0xcc0/0xcc0 [ 50.804914] ? ip6_fragment+0x3b40/0x3b40 [ 50.810040] ip6_local_out+0x78/0x130 [ 50.814119] ip6_send_skb+0x92/0x2f0 [ 50.817973] ip6_push_pending_frames+0x94/0xb0 [ 50.822596] rawv6_sendmsg+0x232a/0x2e20 [ 50.826670] ? __read_once_size_nocheck.constprop.7+0x10/0x10 [ 50.832684] ? rawv6_ioctl+0x160/0x160 [ 50.836577] ? __read_once_size_nocheck.constprop.7+0x10/0x10 [ 50.842864] ? unwind_next_frame.part.6+0x1a3/0xa40 [ 50.848077] ? lock_downgrade+0x7f0/0x7f0 [ 50.852440] ? unwind_next_frame.part.6+0x1a3/0xa40 [ 50.857574] ? unwind_dump+0x100/0x100 [ 50.861471] ? is_bpf_text_address+0x7d/0xe0 [ 50.865885] ? kernel_text_address+0x79/0xf0 [ 50.870294] ? __unwind_start+0x1ed/0x400 [ 50.874446] ? __kernel_text_address+0xd/0x40 [ 50.878934] ? unwind_get_return_address+0x58/0xa0 [ 50.884086] ? __save_stack_trace+0x7e/0xd0 [ 50.888604] ? add_lock_to_list.isra.8+0x193/0x340 [ 50.893635] ? save_trace+0xe0/0x290 [ 50.897366] inet_sendmsg+0x108/0x440 [ 50.901175] ? inet_sendmsg+0x108/0x440 [ 50.905325] ? inet_recvmsg+0x640/0x640 [ 50.909295] sock_sendmsg+0xac/0xf0 [ 50.913009] kernel_sendmsg+0x26/0x30 [ 50.916814] sock_no_sendpage+0xf7/0x130 [ 50.920880] ? sk_clear_memalloc+0x110/0x110 [ 50.925375] ? __local_bh_enable_ip+0xcc/0x150 [ 50.930225] kernel_sendpage+0x60/0xd0 [ 50.934398] kcm_write_msgs+0x2f7/0x1670 [ 50.938558] kcm_sendmsg+0x1665/0x24f0 [ 50.942573] ? kcm_sendpage+0x1c10/0x1c10 [ 50.947120] ? lock_downgrade+0x7f0/0x7f0 [ 50.951529] ? kcm_sendpage+0x1c10/0x1c10 [ 50.955785] sock_sendmsg+0xac/0xf0 [ 50.959832] sock_write_iter+0x20d/0x400 [ 50.964455] ? sock_sendmsg+0xf0/0xf0 [ 50.968286] __vfs_write+0x413/0x840 [ 50.972152] ? __lock_acquire+0x701/0x42d0 [ 50.976481] ? kernel_read+0x130/0x130 [ 50.980630] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 50.985577] ? rw_verify_area+0xb8/0x2b0 [ 50.989638] vfs_write+0x150/0x4f0 [ 50.993184] SyS_write+0x100/0x250 [ 50.996826] ? SyS_read+0x250/0x250 [ 51.000475] ? do_syscall_64+0x4c/0x5b0 [ 51.004626] ? SyS_read+0x250/0x250 [ 51.008610] do_syscall_64+0x1c7/0x5b0 [ 51.012589] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.017700] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 51.023206] RIP: 0033:0x7fc8360adc09 [ 51.027042] RSP: 002b:00007fc83603e2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 51.034937] RAX: ffffffffffffffda RBX: 00007fc836136410 RCX: 00007fc8360adc09 [ 51.042813] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 51.050262] RBP: 00007fc8361037c0 R08: 00007fc83603e700 R09: 0000000000000000 [ 51.057540] R10: 00007fc83603e700 R11: 0000000000000246 R12: 00007fc836103068 [ 51.065607] R13: 656c6c616b7a7973 R14: 0100000000000000 R15: 00007fc836136418 [ 51.073556] Kernel Offset: disabled [ 51.077606] Rebooting in 86400 seconds..