[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.377820] audit: type=1800 audit(1546094485.675:25): pid=7873 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.406469] audit: type=1800 audit(1546094485.675:26): pid=7873 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 39.443192] audit: type=1800 audit(1546094485.675:27): pid=7873 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 44.021238] sshd (8009) used greatest stack depth: 15736 bytes left Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. 2018/12/29 14:42:26 parsed 1 programs [ 101.437246] collect2 (8032) used greatest stack depth: 15288 bytes left 2018/12/29 14:42:27 executed programs: 0 [ 101.684700] IPVS: ftp: loaded support on port[0] = 21 [ 101.931250] chnl_net:caif_netlink_parms(): no params data found [ 102.044916] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.051998] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.058989] device bridge_slave_0 entered promiscuous mode [ 102.078269] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.084697] bridge0: port 2(bridge_slave_1) entered disabled state [ 102.091846] device bridge_slave_1 entered promiscuous mode [ 102.143276] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 102.165295] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 102.216511] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 102.223904] team0: Port device team_slave_0 added [ 102.242475] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 102.249555] team0: Port device team_slave_1 added [ 102.267295] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 102.285975] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 102.348634] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 102.368520] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 102.519360] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.525794] bridge0: port 2(bridge_slave_1) entered forwarding state [ 102.532730] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.539081] bridge0: port 1(bridge_slave_0) entered forwarding state [ 102.931516] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.949362] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.110768] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.167185] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 103.222149] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 103.228288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 103.237079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 103.287779] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 103.294238] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.348327] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 103.355657] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 103.365576] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 103.374654] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.381085] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.429201] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 103.436234] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 103.445332] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 103.453185] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.459628] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.505395] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 103.512424] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 103.568290] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 103.575777] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 103.631593] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 103.638426] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 103.646490] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 103.654127] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 103.702111] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 103.708910] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 103.717148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 103.767870] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 103.775076] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 103.783166] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 103.833523] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 103.840523] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 103.848444] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 104.189853] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 104.320479] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 104.427828] kasan: CONFIG_KASAN_INLINE enabled [ 104.432610] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 104.440049] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 104.446455] CPU: 1 PID: 8415 Comm: syz-executor0 Not tainted 4.20.0+ #362 [ 104.453370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.462729] RIP: 0010:__smc_diag_dump.isra.4+0x341/0x2ac0 [ 104.468258] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 47 24 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 76 20 49 8d 7e 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1f [ 104.487156] RSP: 0018:ffff88808b7cf060 EFLAGS: 00010203 [ 104.492510] RAX: dffffc0000000000 RBX: ffff88809ef01240 RCX: 0000000000000000 [ 104.499784] RDX: 0000000000000001 RSI: ffffffff87abfb19 RDI: 000000000000000e [ 104.507068] RBP: ffff88808b7cf388 R08: ffff88808adec040 R09: ffff8880806459d8 [ 104.514330] R10: 0000000000000000 R11: ffff888080645987 R12: ffff888080645988 [ 104.521592] R13: ffff88808a1c44e0 R14: 0000000000000000 R15: ffff88809ef016a0 [ 104.528873] FS: 00007f7bfe2a7700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 104.537091] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 104.542963] CR2: 00007fc5bbe3d000 CR3: 0000000086dee000 CR4: 00000000001406e0 [ 104.550240] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 104.557500] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 104.564756] Call Trace: [ 104.567360] ? netlink_rcv_skb+0x175/0x430 [ 104.571609] ? sock_sendmsg+0xd5/0x120 [ 104.575496] ? smc_diag_handler_dump+0x350/0x350 [ 104.580742] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.586277] ? check_preemption_disabled+0x48/0x280 [ 104.591290] ? __lock_is_held+0xb5/0x140 [ 104.595357] ? __kmalloc_node_track_caller+0x3c/0x70 [ 104.600479] ? __kmalloc_node_track_caller+0x3c/0x70 [ 104.605579] ? rcu_read_lock_sched_held+0x108/0x120 [ 104.610591] ? kmem_cache_alloc_node_trace+0x34b/0x740 [ 104.615865] ? kasan_unpoison_shadow+0x35/0x50 [ 104.620443] ? lock_acquire+0x1ed/0x520 [ 104.624415] ? smc_diag_dump_proto.isra.5+0xf8/0x3c0 [ 104.629506] ? __kmalloc_node_track_caller+0x50/0x70 [ 104.634600] ? lock_release+0xa00/0xa00 [ 104.638569] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.644098] ? __alloc_skb+0x4bd/0x760 [ 104.647978] ? __netlink_dump_start+0x592/0x7c0 [ 104.652657] ? kasan_check_write+0x14/0x20 [ 104.656904] smc_diag_dump_proto.isra.5+0x2e8/0x3c0 [ 104.661952] ? __smc_diag_dump.isra.4+0x2ac0/0x2ac0 [ 104.666963] ? kasan_check_write+0x14/0x20 [ 104.671190] smc_diag_dump+0x26/0x70 [ 104.674897] netlink_dump+0x600/0x1080 [ 104.678778] ? check_preemption_disabled+0x48/0x280 [ 104.683789] ? netlink_broadcast+0x50/0x50 [ 104.688032] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 104.693308] ? rcu_read_unlock_special+0x370/0x370 [ 104.698242] __netlink_dump_start+0x59a/0x7c0 [ 104.702739] smc_diag_handler_dump+0x2a3/0x350 [ 104.707319] ? smc_gid_be16_convert+0x2c0/0x2c0 [ 104.711998] ? smc_diag_dump_proto.isra.5+0x3c0/0x3c0 [ 104.717180] ? netlink_deliver_tap+0x355/0xf40 [ 104.721761] sock_diag_rcv_msg+0x31d/0x410 [ 104.726025] netlink_rcv_skb+0x16c/0x430 [ 104.730089] ? sock_diag_bind+0x80/0x80 [ 104.734065] ? netlink_ack+0xb70/0xb70 [ 104.737972] sock_diag_rcv+0x2a/0x40 [ 104.741682] netlink_unicast+0x59f/0x750 [ 104.745753] ? netlink_attachskb+0x9a0/0x9a0 [ 104.750219] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.755765] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 104.760777] netlink_sendmsg+0xa18/0xfc0 [ 104.764843] ? netlink_unicast+0x750/0x750 [ 104.769079] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 104.774002] ? apparmor_socket_sendmsg+0x29/0x30 [ 104.778928] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.784476] ? security_socket_sendmsg+0x94/0xc0 [ 104.789225] ? netlink_unicast+0x750/0x750 [ 104.793473] sock_sendmsg+0xd5/0x120 [ 104.797199] ___sys_sendmsg+0x7fd/0x930 [ 104.801171] ? copy_msghdr_from_user+0x580/0x580 [ 104.805925] ? __fget_light+0x2e9/0x430 [ 104.809903] ? fget_raw+0x20/0x20 [ 104.813354] ? __might_fault+0x12b/0x1e0 [ 104.817406] ? lock_downgrade+0x900/0x900 [ 104.821547] ? lock_release+0xa00/0xa00 [ 104.825515] ? arch_local_save_flags+0x40/0x40 [ 104.830096] ? posix_ktime_get_ts+0x15/0x20 [ 104.834411] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 104.839852] ? __local_bh_enable_ip+0x1a3/0x260 [ 104.844517] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.850069] ? sockfd_lookup_light+0xc5/0x160 [ 104.854564] __sys_sendmsg+0x11d/0x280 [ 104.858463] ? __ia32_sys_shutdown+0x80/0x80 [ 104.862871] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 104.868402] ? put_timespec64+0x10f/0x1b0 [ 104.872549] ? do_syscall_64+0x9a/0x820 [ 104.876533] ? do_syscall_64+0x9a/0x820 [ 104.880508] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 104.885955] __x64_sys_sendmsg+0x78/0xb0 [ 104.890012] do_syscall_64+0x1b9/0x820 [ 104.893898] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 104.899276] ? syscall_return_slowpath+0x5e0/0x5e0 [ 104.904200] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.909035] ? trace_hardirqs_on_caller+0x310/0x310 [ 104.914079] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 104.919097] ? prepare_exit_to_usermode+0x291/0x3b0 [ 104.924114] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.928954] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.934133] RIP: 0033:0x4579b9 [ 104.937323] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 104.956220] RSP: 002b:00007f7bfe2a6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 104.963920] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004579b9 [ 104.971184] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 [ 104.978447] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 104.985707] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7bfe2a76d4 [ 104.992971] R13: 00000000004c4d3b R14: 00000000004d84a8 R15: 00000000ffffffff [ 105.000239] Modules linked in: [ 105.004152] ---[ end trace 8ab9b89075cd989e ]--- [ 105.008915] RIP: 0010:__smc_diag_dump.isra.4+0x341/0x2ac0 [ 105.014470] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 47 24 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 76 20 49 8d 7e 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 1f [ 105.033383] RSP: 0018:ffff88808b7cf060 EFLAGS: 00010203 [ 105.038742] RAX: dffffc0000000000 RBX: ffff88809ef01240 RCX: 0000000000000000 [ 105.046028] RDX: 0000000000000001 RSI: ffffffff87abfb19 RDI: 000000000000000e [ 105.053332] RBP: ffff88808b7cf388 R08: ffff88808adec040 R09: ffff8880806459d8 [ 105.060661] R10: 0000000000000000 R11: ffff888080645987 R12: ffff888080645988 [ 105.067923] R13: ffff88808a1c44e0 R14: 0000000000000000 R15: ffff88809ef016a0 [ 105.075206] FS: 00007f7bfe2a7700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 105.083448] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.089322] CR2: 00007fc5bbe3d000 CR3: 0000000086dee000 CR4: 00000000001406e0 [ 105.096607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 105.103889] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 105.111206] Kernel panic - not syncing: Fatal exception [ 105.117506] Kernel Offset: disabled [ 105.121128] Rebooting in 86400 seconds..