[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 28.837875] kauditd_printk_skb: 7 callbacks suppressed [ 28.837886] audit: type=1800 audit(1544566174.536:29): pid=5899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 28.863864] audit: type=1800 audit(1544566174.536:30): pid=5899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 32.218752] sshd (6038) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.105' (ECDSA) to the list of known hosts. [ 38.966317] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 39.222862] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.229724] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.237199] device bridge_slave_0 entered promiscuous mode [ 39.256625] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.263281] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.270233] device bridge_slave_1 entered promiscuous mode [ 39.289682] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 39.307619] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 39.358865] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.380277] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.459311] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 39.466895] team0: Port device team_slave_0 added [ 39.484276] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 39.491449] team0: Port device team_slave_1 added [ 39.510263] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 39.534460] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 39.555003] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 39.575084] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported [ 39.727965] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.734443] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.741364] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.747805] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 40.279920] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.332867] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 40.386203] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 40.392653] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 40.399995] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 40.453967] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 40.758436] Started in network mode [ 40.762342] Own node identity ac1414bb, cluster identity 4711 [ 40.768660] New replicast peer: 255.255.255.255 [ 40.774506] Enabled bearer , priority 10 [ 40.780989] Enabling of bearer rejected, already enabled [ 41.092298] kasan: CONFIG_KASAN_INLINE enabled [ 41.096992] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.104431] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.110723] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.20.0-rc6+ #371 [ 41.117375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.126734] RIP: 0010:dst_dev_put+0x24/0x290 [ 41.131131] Code: 90 90 90 90 90 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb e8 fd ed 4d fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 01 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 [ 41.150037] RSP: 0018:ffff8881daf07658 EFLAGS: 00010246 [ 41.155389] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86b6790f [ 41.162641] RDX: 0000000000000000 RSI: ffffffff86319673 RDI: 0000000000000003 [ 41.169897] RBP: ffff8881daf07678 R08: ffff8881d9b14340 R09: 0000000000000008 [ 41.177150] R10: 0000000000000000 R11: ffff8881d9b14340 R12: dffffc0000000000 [ 41.184403] R13: 0000000000000000 R14: 0000000000000003 R15: 0000607e24e2d3b0 [ 41.191659] FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 41.199875] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.205743] CR2: 00007f2f99ad6e78 CR3: 00000001cf337000 CR4: 00000000001406e0 [ 41.213002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.220258] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.227511] Call Trace: [ 41.230076] [ 41.232217] free_fib_info_rcu+0x2e1/0x490 [ 41.236438] ? fib_detect_death+0x240/0x240 [ 41.240762] rcu_process_callbacks+0x100a/0x1ac0 [ 41.245519] ? rcu_note_context_switch+0x2150/0x2150 [ 41.250610] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 41.255617] ? find_held_lock+0x36/0x1c0 [ 41.259663] ? rebalance_domains+0x358/0xdc0 [ 41.264057] ? lock_downgrade+0x900/0x900 [ 41.268188] ? check_preemption_disabled+0x48/0x280 [ 41.273190] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 41.278104] ? kasan_check_read+0x11/0x20 [ 41.282238] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 41.287522] ? rcu_softirq_qs+0x20/0x20 [ 41.291493] ? rebalance_domains+0x375/0xdc0 [ 41.295892] ? load_balance+0x39a0/0x39a0 [ 41.300029] ? enqueue_hrtimer+0x1a5/0x560 [ 41.304249] ? hrtimer_update_softirq_timer+0xa0/0xa0 [ 41.309426] ? find_held_lock+0x36/0x1c0 [ 41.313481] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.319009] ? check_preemption_disabled+0x48/0x280 [ 41.324013] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.329533] ? check_preemption_disabled+0x48/0x280 [ 41.334537] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 41.340059] ? rcu_pm_notify+0xc0/0xc0 [ 41.343933] __do_softirq+0x308/0xb7e [ 41.347726] ? ktime_get_raw_ts64+0x4d0/0x4d0 [ 41.352204] ? lock_downgrade+0x900/0x900 [ 41.356335] ? __irqentry_text_end+0x1f9658/0x1f9658 [ 41.361426] ? pvclock_read_flags+0x160/0x160 [ 41.365923] ? lapic_next_event+0x5a/0x90 [ 41.370072] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.375595] ? kvm_clock_read+0x18/0x30 [ 41.379569] ? kvm_sched_clock_read+0x9/0x20 [ 41.383978] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.389502] ? check_preemption_disabled+0x48/0x280 [ 41.394521] irq_exit+0x17f/0x1c0 [ 41.397959] smp_apic_timer_interrupt+0x1cb/0x760 [ 41.402785] ? smp_reschedule_interrupt+0x109/0x650 [ 41.407784] ? smp_call_function_single_interrupt+0x650/0x650 [ 41.413651] ? interrupt_entry+0xb5/0xc0 [ 41.417694] ? trace_hardirqs_off_caller+0xbb/0x310 [ 41.422700] ? trace_hardirqs_off_caller+0xbb/0x310 [ 41.427704] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.432537] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.437547] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.442552] ? task_prio+0x50/0x50 [ 41.446077] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 41.451618] ? check_preemption_disabled+0x48/0x280 [ 41.456628] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.461458] apic_timer_interrupt+0xf/0x20 [ 41.465671] [ 41.467897] RIP: 0010:native_safe_halt+0x6/0x10 [ 41.472553] Code: e9 2c ff ff ff 48 89 c7 48 89 45 d8 e8 c3 f0 e7 f9 48 8b 45 d8 e9 ca fe ff ff 48 89 df e8 b2 f0 e7 f9 eb 82 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 90 90 90 90 90 [ 41.491459] RSP: 0018:ffff8881d9b27cb8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 41.499161] RAX: dffffc0000000000 RBX: 1ffff1103b364f9b RCX: 0000000000000000 [ 41.506417] RDX: 1ffffffff12a4021 RSI: 0000000000000001 RDI: ffffffff89520108 [ 41.513674] RBP: ffff8881d9b27cb8 R08: ffff8881d9b14340 R09: 0000000000000000 [ 41.520930] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d9b27d78 [ 41.528191] R13: ffffffff8a163e20 R14: 0000000000000000 R15: 0000000000000001 [ 41.535468] default_idle+0xbf/0x490 [ 41.539183] ? rcu_dynticks_eqs_enter+0x4f/0x80 [ 41.543837] ? __sched_text_end+0x1/0x1 [ 41.547794] ? rcu_idle_enter+0x39a/0x530 [ 41.551926] ? rcu_eqs_special_set+0x1c0/0x1c0 [ 41.556499] ? tsc_verify_tsc_adjust+0x137/0x450 [ 41.561281] ? trace_hardirqs_off_caller+0x310/0x310 [ 41.566371] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.571903] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.577428] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.582954] arch_cpu_idle+0x10/0x20 [ 41.586675] default_idle_call+0x6d/0x90 [ 41.590725] do_idle+0x49b/0x5c0 [ 41.594077] ? arch_cpu_idle_exit+0x70/0x70 [ 41.598397] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 41.603493] ? complete+0x62/0x80 [ 41.606932] cpu_startup_entry+0x18/0x20 [ 41.610976] start_secondary+0x487/0x5f0 [ 41.615028] ? set_cpu_sibling_map+0x1890/0x1890 [ 41.619770] secondary_startup_64+0xa4/0xb0 [ 41.624074] Modules linked in: [ 41.627317] ---[ end trace 371606f8ad3c25c5 ]--- [ 41.632123] RIP: 0010:dst_dev_put+0x24/0x290 [ 41.636531] Code: 90 90 90 90 90 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb e8 fd ed 4d fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 01 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 [ 41.655494] RSP: 0018:ffff8881daf07658 EFLAGS: 00010246 [ 41.660862] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: ffffffff86b6790f [ 41.668160] RDX: 0000000000000000 RSI: ffffffff86319673 RDI: 0000000000000003 [ 41.675446] RBP: ffff8881daf07678 R08: ffff8881d9b14340 R09: 0000000000000008 [ 41.682764] R10: 0000000000000000 R11: ffff8881d9b14340 R12: dffffc0000000000 [ 41.690043] R13: 0000000000000000 R14: 0000000000000003 R15: 0000607e24e2d3b0 [ 41.697346] FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 41.705596] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.711470] CR2: 00007f2f99ad6e78 CR3: 00000001cf337000 CR4: 00000000001406e0 [ 41.718788] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.726077] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.733370] Kernel panic - not syncing: Fatal exception in interrupt [ 41.740846] Kernel Offset: disabled [ 41.744468] Rebooting in 86400 seconds..