[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 49.068770][ T27] audit: type=1800 audit(1583510036.292:25): pid=8504 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 49.105537][ T27] audit: type=1800 audit(1583510036.302:26): pid=8504 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 49.138775][ T27] audit: type=1800 audit(1583510036.302:27): pid=8504 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.4' (ECDSA) to the list of known hosts. syzkaller login: [ 59.102148][ T8657] IPVS: ftp: loaded support on port[0] = 21 [ 59.145690][ T8657] chnl_net:caif_netlink_parms(): no params data found [ 59.179122][ T8657] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.187031][ T8657] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.195995][ T8657] device bridge_slave_0 entered promiscuous mode [ 59.205150][ T8657] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.212626][ T8657] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.221096][ T8657] device bridge_slave_1 entered promiscuous mode [ 59.236893][ T8657] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.247823][ T8657] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.264720][ T8657] team0: Port device team_slave_0 added [ 59.272467][ T8657] team0: Port device team_slave_1 added [ 59.285181][ T8657] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.292708][ T8657] 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. [ 59.319199][ T8657] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 59.331432][ T8657] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 59.338554][ T8657] 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. [ 59.365254][ T8657] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 59.420469][ T8657] device hsr_slave_0 entered promiscuous mode [ 59.459027][ T8657] device hsr_slave_1 entered promiscuous mode [ 59.560089][ T8657] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.591476][ T8657] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.661795][ T8657] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.721490][ T8657] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.801648][ T8657] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.808842][ T8657] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.816458][ T8657] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.823572][ T8657] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.860933][ T8657] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.874219][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.885913][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.904753][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.913816][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.926175][ T8657] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.936914][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.945702][ T4066] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.952941][ T4066] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.964755][ T2776] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.974185][ T2776] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.981469][ T2776] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.998289][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.006960][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.017773][ T2776] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.033716][ T8657] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 60.045398][ T8657] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.059712][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.068309][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.079045][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.094012][ T2776] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.102102][ T2776] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.114567][ T8657] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.131589][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 60.148846][ T2776] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 60.157638][ T2776] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 60.166992][ T8657] device veth0_vlan entered promiscuous mode [ 60.174080][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 60.182421][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 60.194621][ T8657] device veth1_vlan entered promiscuous mode [ 60.213016][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 60.221757][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 60.233267][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 60.241977][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 60.252185][ T8657] device veth0_macvtap entered promiscuous mode [ 60.262457][ T8657] device veth1_macvtap entered promiscuous mode [ 60.276983][ T8657] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 60.284981][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 60.295187][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 60.304402][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 60.313425][ T4066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 60.324823][ T8657] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 60.332505][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 60.342205][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 60.480148][ T8663] ------------[ cut here ]------------ [ 60.485757][ T8663] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 60.495859][ T8663] WARNING: CPU: 0 PID: 8663 at lib/debugobjects.c:488 debug_object_activate+0x5a8/0x6f0 [ 60.506096][ T8663] Kernel panic - not syncing: panic_on_warn set ... [ 60.512777][ T8663] CPU: 0 PID: 8663 Comm: syz-executor618 Not tainted 5.6.0-rc3-syzkaller #0 [ 60.523356][ T8663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.533396][ T8663] Call Trace: [ 60.536674][ T8663] dump_stack+0x1fb/0x318 [ 60.540992][ T8663] panic+0x264/0x7a9 [ 60.544871][ T8663] ? __warn+0x105/0x210 [ 60.549011][ T8663] ? debug_object_activate+0x5a8/0x6f0 [ 60.554454][ T8663] __warn+0x209/0x210 [ 60.558430][ T8663] ? debug_object_activate+0x5a8/0x6f0 [ 60.563884][ T8663] report_bug+0x1b6/0x2f0 [ 60.568196][ T8663] ? debug_object_activate+0x5a8/0x6f0 [ 60.573638][ T8663] do_error_trap+0xcf/0x1c0 [ 60.578135][ T8663] do_invalid_op+0x36/0x40 [ 60.582534][ T8663] ? debug_object_activate+0x5a8/0x6f0 [ 60.587975][ T8663] invalid_op+0x23/0x30 [ 60.592130][ T8663] RIP: 0010:debug_object_activate+0x5a8/0x6f0 [ 60.598176][ T8663] Code: 74 08 4c 89 f7 e8 d8 43 0f fe 4d 8b 06 48 c7 c7 13 ec f0 88 48 c7 c6 04 4f 06 89 4c 89 ea 89 d9 4d 89 e1 31 c0 e8 08 e0 a3 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 da eb c4 05 48 8b 5d b8 [ 60.617766][ T8663] RSP: 0018:ffffc9000217f3a8 EFLAGS: 00010246 [ 60.623813][ T8663] RAX: 5c6867d50a9b5b00 RBX: 0000000000000001 RCX: ffff8880a95765c0 [ 60.631774][ T8663] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 60.639732][ T8663] RBP: ffffc9000217f3f0 R08: ffffffff81601324 R09: ffffed1015d46618 [ 60.647695][ T8663] R10: ffffed1015d46618 R11: 0000000000000000 R12: 0000000000000000 [ 60.655728][ T8663] R13: ffffffff88f4c97a R14: ffffffff892d99a8 R15: ffff88809e2a0598 [ 60.663744][ T8663] ? vprintk_emit+0x2d4/0x3a0 [ 60.668430][ T8663] ? debug_object_activate+0x5a8/0x6f0 [ 60.673968][ T8663] ? queue_rcu_work+0x90/0x90 [ 60.678655][ T8663] call_rcu+0x3a/0x660 [ 60.683092][ T8663] queue_rcu_work+0x79/0x90 [ 60.687597][ T8663] ? route4_dump+0x6d0/0x6d0 [ 60.692176][ T8663] tcf_queue_work+0xc9/0xe0 [ 60.696679][ T8663] route4_change+0x18e8/0x1d90 [ 60.701451][ T8663] tc_new_tfilter+0x1490/0x2f50 [ 60.706285][ T8663] ? route4_get+0x390/0x390 [ 60.710813][ T8663] ? tcf_tunnel_encap_put_tunnel+0x20/0x20 [ 60.716595][ T8663] rtnetlink_rcv_msg+0x8fb/0xd40 [ 60.721605][ T8663] ? __local_bh_enable_ip+0x13a/0x240 [ 60.726995][ T8663] ? local_bh_enable+0x9/0x30 [ 60.731667][ T8663] ? trace_hardirqs_on+0x74/0x80 [ 60.736748][ T8663] ? __local_bh_enable_ip+0x13a/0x240 [ 60.742131][ T8663] ? local_bh_enable+0x1f/0x30 [ 60.746890][ T8663] ? rcu_lock_release+0x9/0x30 [ 60.751641][ T8663] netlink_rcv_skb+0x19e/0x3e0 [ 60.756391][ T8663] ? rtnetlink_bind+0x80/0x80 [ 60.761053][ T8663] rtnetlink_rcv+0x1c/0x20 [ 60.765443][ T8663] netlink_unicast+0x766/0x920 [ 60.770191][ T8663] netlink_sendmsg+0xa2b/0xd40 [ 60.774941][ T8663] ? netlink_getsockopt+0x9f0/0x9f0 [ 60.780187][ T8663] ____sys_sendmsg+0x4f7/0x7f0 [ 60.784985][ T8663] __sys_sendmsg+0x1ed/0x290 [ 60.789582][ T8663] ? rcu_read_lock_sched_held+0x10b/0x170 [ 60.795281][ T8663] ? __kasan_check_write+0x14/0x20 [ 60.800439][ T8663] ? __fpregs_load_activate+0x194/0x220 [ 60.805972][ T8663] ? switch_fpu_return+0xe/0x10 [ 60.811082][ T8663] ? prepare_exit_to_usermode+0x221/0x5b0 [ 60.816866][ T8663] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 60.822582][ T8663] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 60.828025][ T8663] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 60.833722][ T8663] ? do_syscall_64+0x1d/0x1c0 [ 60.838382][ T8663] __x64_sys_sendmsg+0x7f/0x90 [ 60.843138][ T8663] do_syscall_64+0xf7/0x1c0 [ 60.847792][ T8663] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 60.853673][ T8663] RIP: 0033:0x449089 [ 60.857543][ T8663] Code: e8 cc 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.877124][ T8663] RSP: 002b:00007fd360b4fd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.885513][ T8663] RAX: ffffffffffffffda RBX: 00000000006dec68 RCX: 0000000000449089 [ 60.893461][ T8663] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 60.901425][ T8663] RBP: 00000000006dec60 R08: 0000000000000000 R09: 0000000000000000 [ 60.909382][ T8663] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec6c [ 60.917338][ T8663] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 60.927000][ T8663] Kernel Offset: disabled [ 60.931362][ T8663] Rebooting in 86400 seconds..