[....] 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. [ 27.959731] kauditd_printk_skb: 8 callbacks suppressed [ 27.959744] audit: type=1800 audit(1543769342.095:29): pid=5869 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 [ 27.986676] audit: type=1800 audit(1543769342.095:30): pid=5869 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 Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. syzkaller login: [ 54.709421] IPVS: ftp: loaded support on port[0] = 21 [ 54.877647] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.884479] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.891821] device bridge_slave_0 entered promiscuous mode [ 54.910908] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.917305] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.924288] device bridge_slave_1 entered promiscuous mode [ 54.942559] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 54.960081] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.009908] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.030823] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.106891] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 55.114178] team0: Port device team_slave_0 added [ 55.130585] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 55.137890] team0: Port device team_slave_1 added [ 55.154311] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.173717] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.194170] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 55.214242] 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 [ 55.359242] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.365832] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.372777] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.379137] 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 [ 55.897819] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.950499] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 56.001704] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.008025] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.015164] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.069397] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 56.643083] BUG: unable to handle kernel paging request at ffff888220000000 [ 56.650211] PGD be01067 P4D be01067 PUD be04067 PMD 0 [ 56.655478] Oops: 0000 [#1] PREEMPT SMP KASAN [ 56.659973] CPU: 1 PID: 6026 Comm: syz-executor517 Not tainted 4.20.0-rc4+ #323 [ 56.667400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.676756] RIP: 0010:do_csum+0x192/0x410 [ 56.680901] Code: 85 f6 74 54 4d 89 ef e8 2c 40 a4 f9 41 83 ee 01 31 ff 31 c0 44 89 f6 49 03 1f 49 13 5f 08 49 13 5f 10 49 13 5f 18 49 13 5f 20 <49> 13 5f 28 49 13 5f 30 49 13 5f 38 48 11 c3 e8 0a 41 a4 f9 49 83 [ 56.699794] RSP: 0018:ffff8881c2116560 EFLAGS: 00010286 [ 56.705136] RAX: 0000000000000000 RBX: 87cab0327b72d31b RCX: ffffffff87db4af6 [ 56.712731] RDX: 0000000000000000 RSI: 0000000002455005 RDI: 0000000000000000 [ 56.719995] RBP: ffff8881c2116598 R08: ffff8881c24244c0 R09: ffff8881b1550154 [ 56.727249] R10: 000000000000ffd4 R11: ffffea0006fff577 R12: 00000000ffff0038 [ 56.734499] R13: ffff8881b1550158 R14: 0000000002455005 R15: ffff88821fffffd8 [ 56.741751] FS: 0000000000ad7880(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 56.749957] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.755816] CR2: ffff888220000000 CR3: 00000001c3285000 CR4: 00000000001406e0 [ 56.763069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.770319] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.777575] Call Trace: [ 56.780154] csum_partial+0x21/0x30 [ 56.783769] tcp_gso_segment+0xa12/0x1740 [ 56.787904] ? sk_common_release+0x320/0x320 [ 56.792300] tcp6_gso_segment+0x1c8/0x540 [ 56.796489] ipv6_gso_segment+0x554/0x1130 [ 56.800715] ? tag_mount+0xfe2/0x1ce0 [ 56.804502] ? sit_ip6ip6_gro_receive+0x100/0x100 [ 56.809330] ? __lock_is_held+0xb5/0x140 [ 56.813379] ? sit_ip6ip6_gro_receive+0x100/0x100 [ 56.818206] inet_gso_segment+0x639/0x1350 [ 56.822433] ? inet_sock_destruct+0x9b0/0x9b0 [ 56.826919] ipv6_gso_segment+0x554/0x1130 [ 56.831135] ? skb_mac_gso_segment+0x229/0x740 [ 56.835703] ? sit_ip6ip6_gro_receive+0x100/0x100 [ 56.840529] ? kasan_check_read+0x11/0x20 [ 56.844656] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 56.849916] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 56.855084] ? rcu_softirq_qs+0x20/0x20 [ 56.859044] ? skb_network_protocol+0xfc/0x4c0 [ 56.863730] skb_mac_gso_segment+0x3b3/0x740 [ 56.868241] ? sit_ip6ip6_gro_receive+0x100/0x100 [ 56.873152] ? skb_network_protocol+0x4c0/0x4c0 [ 56.877811] ? print_usage_bug+0xc0/0xc0 [ 56.881863] ? __lock_acquire+0x2aff/0x4c20 [ 56.886172] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 56.891346] ? skb_network_protocol+0xfc/0x4c0 [ 56.895927] __skb_gso_segment+0x3c3/0x880 [ 56.900148] ? skb_mac_gso_segment+0x740/0x740 [ 56.904715] validate_xmit_skb+0x689/0xf90 [ 56.908934] ? netif_skb_features+0xb60/0xb60 [ 56.913414] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.918935] ? check_preemption_disabled+0x48/0x280 [ 56.923947] validate_xmit_skb_list+0xd1/0x140 [ 56.928545] sch_direct_xmit+0x30e/0x1130 [ 56.932725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.938248] ? check_preemption_disabled+0x48/0x280 [ 56.943247] ? dev_watchdog+0xb10/0xb10 [ 56.947203] ? __lock_is_held+0xb5/0x140 [ 56.951250] __qdisc_run+0x636/0x1990 [ 56.955035] ? sch_direct_xmit+0x1130/0x1130 [ 56.959424] ? lock_acquire+0x1ed/0x520 [ 56.963387] ? dev_queue_xmit+0x17/0x20 [ 56.967349] ? lock_release+0xa00/0xa00 [ 56.971308] ? mini_qdisc_pair_init+0x160/0x160 [ 56.975968] __dev_queue_xmit+0x191e/0x3ae0 [ 56.980286] ? dev_queue_xmit+0x17/0x20 [ 56.984250] ? netdev_pick_tx+0x310/0x310 [ 56.988383] ? __alloc_skb+0x4c6/0x770 [ 56.992271] ? mark_held_locks+0x130/0x130 [ 56.996504] ? check_preemption_disabled+0x48/0x280 [ 57.001521] ? zap_class+0x640/0x640 [ 57.005227] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 57.010753] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.016275] ? refcount_add_not_zero_checked+0x21e/0x330 [ 57.021709] ? find_held_lock+0x36/0x1c0 [ 57.025756] ? perf_trace_sched_process_exec+0x860/0x860 [ 57.031189] ? kasan_check_write+0x14/0x20 [ 57.035405] ? copyin+0xb7/0x100 [ 57.038754] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 57.043750] ? copy_page_from_iter+0x541/0x8f0 [ 57.048319] ? _copy_from_iter+0xf70/0xf70 [ 57.052542] ? _copy_from_iter_full+0x2d8/0xce0 [ 57.057197] ? kasan_check_read+0x11/0x20 [ 57.061325] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 57.066794] ? depot_save_stack+0x292/0x470 [ 57.071104] ? skb_copy_datagram_from_iter+0x451/0x660 [ 57.076361] dev_queue_xmit+0x17/0x20 [ 57.080144] ? dev_queue_xmit+0x17/0x20 [ 57.084097] packet_sendmsg+0x430a/0x6540 [ 57.088246] ? find_held_lock+0x36/0x1c0 [ 57.092302] ? packet_getname+0x5f0/0x5f0 [ 57.096435] ? perf_trace_sched_process_exec+0x860/0x860 [ 57.101873] ? usercopy_warn+0x110/0x110 [ 57.105927] ? perf_trace_sched_wake_idle_without_ipi+0x600/0x600 [ 57.112142] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.117663] ? _copy_from_user+0xdf/0x150 [ 57.121799] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.127375] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 57.132445] ? aa_sk_perm+0x22b/0x8e0 [ 57.136230] ? import_iovec+0x2a3/0x4b0 [ 57.140208] ? aa_af_perm+0x5a0/0x5a0 [ 57.144008] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.149550] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 57.154465] ? apparmor_socket_sendmsg+0x29/0x30 [ 57.159203] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.164724] ? security_socket_sendmsg+0x94/0xc0 [ 57.169461] ? packet_getname+0x5f0/0x5f0 [ 57.173608] sock_sendmsg+0xd5/0x120 [ 57.177306] ___sys_sendmsg+0x7fd/0x930 [ 57.181258] ? find_held_lock+0x36/0x1c0 [ 57.185304] ? copy_msghdr_from_user+0x580/0x580 [ 57.190046] ? perf_trace_sched_process_exec+0x860/0x860 [ 57.195478] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.200998] ? __fget_light+0x2e9/0x430 [ 57.204970] ? fget_raw+0x20/0x20 [ 57.208422] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.213944] ? aa_af_perm+0x5a0/0x5a0 [ 57.217729] ? lock_release+0xa00/0xa00 [ 57.221757] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.227276] ? sockfd_lookup_light+0xc5/0x160 [ 57.231756] __sys_sendmsg+0x11d/0x280 [ 57.235624] ? __ia32_sys_shutdown+0x80/0x80 [ 57.240014] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.245548] ? __sys_setsockopt+0x254/0x3c0 [ 57.249878] ? do_syscall_64+0x9a/0x820 [ 57.253845] ? do_syscall_64+0x9a/0x820 [ 57.257815] ? trace_hardirqs_off_caller+0x310/0x310 [ 57.262915] __x64_sys_sendmsg+0x78/0xb0 [ 57.266962] do_syscall_64+0x1b9/0x820 [ 57.270834] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 57.276188] ? syscall_return_slowpath+0x5e0/0x5e0 [ 57.281097] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.285924] ? trace_hardirqs_on_caller+0x310/0x310 [ 57.290953] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 57.295956] ? prepare_exit_to_usermode+0x291/0x3b0 [ 57.300958] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.305781] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.310950] RIP: 0033:0x441449 [ 57.314125] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 57.333005] RSP: 002b:00007ffee6c49868 EFLAGS: 00000286 ORIG_RAX: 000000000000002e [ 57.340693] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000441449 [ 57.347943] RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000003 [ 57.355190] RBP: 00000000006cc018 R08: 0000000000000100 R09: 0000000000000100 [ 57.362439] R10: 0000000000000100 R11: 0000000000000286 R12: 00000000004023b0 [ 57.369684] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 57.377158] Modules linked in: [ 57.380332] CR2: ffff888220000000 [ 57.383764] ---[ end trace f3268c51476b6bea ]--- [ 57.388515] RIP: 0010:do_csum+0x192/0x410 [ 57.392643] Code: 85 f6 74 54 4d 89 ef e8 2c 40 a4 f9 41 83 ee 01 31 ff 31 c0 44 89 f6 49 03 1f 49 13 5f 08 49 13 5f 10 49 13 5f 18 49 13 5f 20 <49> 13 5f 28 49 13 5f 30 49 13 5f 38 48 11 c3 e8 0a 41 a4 f9 49 83 [ 57.411540] RSP: 0018:ffff8881c2116560 EFLAGS: 00010286 [ 57.416898] RAX: 0000000000000000 RBX: 87cab0327b72d31b RCX: ffffffff87db4af6 [ 57.424154] RDX: 0000000000000000 RSI: 0000000002455005 RDI: 0000000000000000 [ 57.431400] RBP: ffff8881c2116598 R08: ffff8881c24244c0 R09: ffff8881b1550154 [ 57.438652] R10: 000000000000ffd4 R11: ffffea0006fff577 R12: 00000000ffff0038 [ 57.445900] R13: ffff8881b1550158 R14: 0000000002455005 R15: ffff88821fffffd8 [ 57.453150] FS: 0000000000ad7880(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 57.461354] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.467219] CR2: ffff888220000000 CR3: 00000001c3285000 CR4: 00000000001406e0 [ 57.474470] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.481735] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.488985] Kernel panic - not syncing: Fatal exception in interrupt [ 57.496408] Kernel Offset: disabled [ 57.500030] Rebooting in 86400 seconds..