[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 71.764618][ T27] audit: type=1800 audit(1584844859.798:25): pid=9332 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 71.794174][ T27] audit: type=1800 audit(1584844859.798:26): pid=9332 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 71.844949][ T27] audit: type=1800 audit(1584844859.798:27): pid=9332 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 Warning: Permanently added '10.128.0.210' (ECDSA) to the list of known hosts. 2020/03/22 02:41:11 parsed 1 programs 2020/03/22 02:41:13 executed programs: 0 syzkaller login: [ 85.300156][ T9502] IPVS: ftp: loaded support on port[0] = 21 [ 85.365577][ T9502] chnl_net:caif_netlink_parms(): no params data found [ 85.406901][ T9502] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.414456][ T9502] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.422378][ T9502] device bridge_slave_0 entered promiscuous mode [ 85.431641][ T9502] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.439113][ T9502] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.447001][ T9502] device bridge_slave_1 entered promiscuous mode [ 85.466237][ T9502] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 85.477796][ T9502] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 85.498509][ T9502] team0: Port device team_slave_0 added [ 85.506395][ T9502] team0: Port device team_slave_1 added [ 85.523109][ T9502] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 85.530330][ T9502] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 85.556249][ T9502] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 85.568739][ T9502] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 85.575785][ T9502] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 85.602022][ T9502] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 85.696673][ T9502] device hsr_slave_0 entered promiscuous mode [ 85.734428][ T9502] device hsr_slave_1 entered promiscuous mode [ 85.843811][ T9502] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.897851][ T9502] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.957397][ T9502] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 86.016790][ T9502] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 86.070652][ T9502] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.077846][ T9502] bridge0: port 2(bridge_slave_1) entered forwarding state [ 86.085910][ T9502] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.093195][ T9502] bridge0: port 1(bridge_slave_0) entered forwarding state [ 86.140212][ T9502] 8021q: adding VLAN 0 to HW filter on device bond0 [ 86.153936][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 86.165104][ T2685] bridge0: port 1(bridge_slave_0) entered disabled state [ 86.173071][ T2685] bridge0: port 2(bridge_slave_1) entered disabled state [ 86.181812][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 86.196053][ T9502] 8021q: adding VLAN 0 to HW filter on device team0 [ 86.207558][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 86.216648][ T2838] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.223795][ T2838] bridge0: port 1(bridge_slave_0) entered forwarding state [ 86.235573][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 86.243952][ T2838] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.251065][ T2838] bridge0: port 2(bridge_slave_1) entered forwarding state [ 86.275331][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 86.283939][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 86.297151][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 86.305428][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 86.319089][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 86.330551][ T9502] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 86.350462][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 86.358762][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 86.371855][ T9502] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 86.395484][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 86.404798][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 86.421173][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 86.431083][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 86.442069][ T9502] device veth0_vlan entered promiscuous mode [ 86.449503][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 86.458432][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 86.471979][ T9502] device veth1_vlan entered promiscuous mode [ 86.501895][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 86.511483][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 86.520122][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 86.529006][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 86.540627][ T9502] device veth0_macvtap entered promiscuous mode [ 86.552833][ T9502] device veth1_macvtap entered promiscuous mode [ 86.572186][ T9502] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.580998][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 86.590567][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 86.599044][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 86.608255][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 86.621062][ T9502] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.628605][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.637714][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 86.897178][ T9509] ------------[ cut here ]------------ [ 86.902912][ T9509] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 86.912071][ T9509] WARNING: CPU: 0 PID: 9509 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 86.921648][ T9509] Kernel panic - not syncing: panic_on_warn set ... [ 86.928360][ T9509] CPU: 0 PID: 9509 Comm: syz-executor.0 Not tainted 5.6.0-rc6-syzkaller #0 [ 86.937047][ T9509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.947155][ T9509] Call Trace: [ 86.950495][ T9509] dump_stack+0x188/0x20d [ 86.954866][ T9509] ? debug_print_object+0xe0/0x250 [ 86.959978][ T9509] panic+0x2e3/0x75c [ 86.963997][ T9509] ? add_taint.cold+0x16/0x16 [ 86.968827][ T9509] ? __probe_kernel_read+0x188/0x1d0 [ 86.974109][ T9509] ? __warn.cold+0x14/0x35 [ 86.978526][ T9509] ? __warn+0xd5/0x1c8 [ 86.982586][ T9509] ? debug_print_object+0x160/0x250 [ 86.987777][ T9509] __warn.cold+0x2f/0x35 [ 86.992011][ T9509] ? debug_print_object+0x160/0x250 [ 86.997198][ T9509] report_bug+0x27b/0x2f0 [ 87.001527][ T9509] do_error_trap+0x12b/0x220 [ 87.006114][ T9509] ? debug_print_object+0x160/0x250 [ 87.011301][ T9509] do_invalid_op+0x32/0x40 [ 87.015703][ T9509] ? debug_print_object+0x160/0x250 [ 87.020904][ T9509] invalid_op+0x23/0x30 [ 87.025049][ T9509] RIP: 0010:debug_print_object+0x160/0x250 [ 87.030851][ T9509] Code: dd c0 f3 51 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd c0 f3 51 88 48 c7 c7 20 e9 51 88 e8 98 c9 b1 fd <0f> 0b 83 05 eb 97 d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 87.050447][ T9509] RSP: 0018:ffffc900022ef178 EFLAGS: 00010282 [ 87.056513][ T9509] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 87.064472][ T9509] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff5200045de21 [ 87.072433][ T9509] RBP: 0000000000000001 R08: ffff888095e28040 R09: fffffbfff180e578 [ 87.080391][ T9509] R10: fffffbfff180e577 R11: ffffffff8c072bbf R12: ffffffff897acba0 [ 87.088355][ T9509] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200045de3c [ 87.096337][ T9509] ? vprintk_func+0x81/0x17e [ 87.100942][ T9509] ? debug_print_object+0x160/0x250 [ 87.106145][ T9509] ? lockdep_hardirqs_on+0x417/0x5d0 [ 87.111418][ T9509] debug_object_activate+0x346/0x470 [ 87.116709][ T9509] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 87.122509][ T9509] ? debug_object_init_on_stack+0x20/0x20 [ 87.128220][ T9509] ? find_held_lock+0x2d/0x110 [ 87.132977][ T9509] ? free_object+0x70/0x70 [ 87.137428][ T9509] ? lock_downgrade+0x7f0/0x7f0 [ 87.142267][ T9509] ? delayed_work_timer_fn+0x90/0x90 [ 87.147546][ T9509] call_rcu+0x2c/0x690 [ 87.151609][ T9509] queue_rcu_work+0x82/0xa0 [ 87.156103][ T9509] route4_change+0x19e8/0x2250 [ 87.160861][ T9509] ? route4_destroy+0x800/0x800 [ 87.165795][ T9509] ? wait_for_completion+0x3c0/0x3c0 [ 87.171092][ T9509] tc_new_tfilter+0xa59/0x20b0 [ 87.175866][ T9509] ? route4_destroy+0x800/0x800 [ 87.180791][ T9509] ? tc_del_tfilter+0x1430/0x1430 [ 87.185828][ T9509] ? __lock_acquire+0x80b/0x3ca0 [ 87.190761][ T9509] ? apparmor_capable+0x454/0x8a0 [ 87.196250][ T9509] ? rcu_read_lock_held+0x9c/0xb0 [ 87.201340][ T9509] ? tc_del_tfilter+0x1430/0x1430 [ 87.206361][ T9509] rtnetlink_rcv_msg+0x810/0xad0 [ 87.211298][ T9509] ? rtnl_bridge_getlink+0x880/0x880 [ 87.216736][ T9509] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 87.222055][ T9509] ? __copy_skb_header+0x280/0x5b0 [ 87.227165][ T9509] ? skb_splice_bits+0x1a0/0x1a0 [ 87.232090][ T9509] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 87.237881][ T9509] ? kmem_cache_alloc+0x261/0x730 [ 87.242916][ T9509] netlink_rcv_skb+0x15a/0x410 [ 87.247670][ T9509] ? rtnl_bridge_getlink+0x880/0x880 [ 87.252945][ T9509] ? netlink_ack+0xa80/0xa80 [ 87.257553][ T9509] netlink_unicast+0x537/0x740 [ 87.262327][ T9509] ? netlink_attachskb+0x810/0x810 [ 87.267439][ T9509] ? _copy_from_iter_full+0x25c/0x870 [ 87.272802][ T9509] ? __phys_addr_symbol+0x2c/0x70 [ 87.277819][ T9509] ? __check_object_size+0x171/0x437 [ 87.283197][ T9509] netlink_sendmsg+0x882/0xe10 [ 87.287973][ T9509] ? aa_af_perm+0x260/0x260 [ 87.292478][ T9509] ? netlink_unicast+0x740/0x740 [ 87.297429][ T9509] ? netlink_unicast+0x740/0x740 [ 87.302355][ T9509] sock_sendmsg+0xcf/0x120 [ 87.306769][ T9509] ____sys_sendmsg+0x6b9/0x7d0 [ 87.311533][ T9509] ? kernel_sendmsg+0x50/0x50 [ 87.316206][ T9509] ? mark_lock+0xbc/0x1220 [ 87.320617][ T9509] ___sys_sendmsg+0x100/0x170 [ 87.325285][ T9509] ? sendmsg_copy_msghdr+0x70/0x70 [ 87.330415][ T9509] ? __fget_files+0x329/0x4f0 [ 87.335814][ T9509] ? ksys_dup3+0x3c0/0x3c0 [ 87.340218][ T9509] ? lock_acquire+0x197/0x420 [ 87.344891][ T9509] ? __might_fault+0xef/0x1d0 [ 87.349584][ T9509] ? __fget_light+0x208/0x270 [ 87.354271][ T9509] __sys_sendmsg+0xec/0x1b0 [ 87.358771][ T9509] ? __sys_sendmsg_sock+0xb0/0xb0 [ 87.363788][ T9509] ? __x64_sys_futex+0x380/0x4f0 [ 87.368744][ T9509] ? trace_hardirqs_off_caller+0x55/0x230 [ 87.374463][ T9509] ? do_syscall_64+0x21/0x7d0 [ 87.379148][ T9509] do_syscall_64+0xf6/0x7d0 [ 87.383644][ T9509] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.389532][ T9509] RIP: 0033:0x45c849 [ 87.393410][ T9509] Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 87.413009][ T9509] RSP: 002b:00007fb7cdc81c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 87.421412][ T9509] RAX: ffffffffffffffda RBX: 00007fb7cdc826d4 RCX: 000000000045c849 [ 87.429380][ T9509] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 87.437357][ T9509] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 87.445377][ T9509] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 87.453357][ T9509] R13: 00000000000009f9 R14: 00000000004ccb11 R15: 000000000076bf0c [ 87.463068][ T9509] Kernel Offset: disabled [ 87.467657][ T9509] Rebooting in 86400 seconds..