[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.482133][ T27] audit: type=1800 audit(1584510317.623:25): pid=9349 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.516212][ T27] audit: type=1800 audit(1584510317.623:26): pid=9349 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 78.547045][ T27] audit: type=1800 audit(1584510317.623:27): pid=9349 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 '10.128.0.124' (ECDSA) to the list of known hosts. syzkaller login: [ 90.341356][ T9505] IPVS: ftp: loaded support on port[0] = 21 [ 90.397478][ T9505] chnl_net:caif_netlink_parms(): no params data found [ 90.437825][ T9505] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.446097][ T9505] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.454101][ T9505] device bridge_slave_0 entered promiscuous mode [ 90.463506][ T9505] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.470705][ T9505] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.478813][ T9505] device bridge_slave_1 entered promiscuous mode [ 90.498437][ T9505] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 90.509600][ T9505] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 90.530236][ T9505] team0: Port device team_slave_0 added [ 90.537807][ T9505] team0: Port device team_slave_1 added [ 90.553932][ T9505] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 90.561031][ T9505] 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. [ 90.587108][ T9505] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 90.600098][ T9505] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 90.607099][ T9505] 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. [ 90.633607][ T9505] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 90.718163][ T9505] device hsr_slave_0 entered promiscuous mode [ 90.756780][ T9505] device hsr_slave_1 entered promiscuous mode [ 90.862309][ T9505] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 90.909016][ T9505] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 90.978259][ T9505] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 91.019129][ T9505] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 91.091409][ T9505] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.098623][ T9505] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.106494][ T9505] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.113580][ T9505] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.159743][ T9505] 8021q: adding VLAN 0 to HW filter on device bond0 [ 91.173345][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 91.183413][ T3212] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.191592][ T3212] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.199822][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 91.212794][ T9505] 8021q: adding VLAN 0 to HW filter on device team0 [ 91.224235][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 91.232886][ T2739] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.239975][ T2739] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.251434][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 91.260737][ T3212] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.268061][ T3212] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.287725][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 91.305388][ T9505] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 91.316227][ T9505] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 91.331063][ T2769] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 91.339501][ T2769] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 91.349203][ T2769] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 91.358532][ T2769] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 91.367368][ T2769] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 91.386502][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 91.393932][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 91.407867][ T9505] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 91.428147][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 91.439497][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.457490][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 91.465837][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.474680][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.482720][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.492908][ T9505] device veth0_vlan entered promiscuous mode [ 91.505221][ T9505] device veth1_vlan entered promiscuous mode [ 91.525587][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 91.534875][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 91.542967][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 91.551904][ T2739] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 91.562738][ T9505] device veth0_macvtap entered promiscuous mode [ 91.573710][ T9505] device veth1_macvtap entered promiscuous mode [ 91.592406][ T9505] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 91.600541][ T3210] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 91.609709][ T3210] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 91.618029][ T3210] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 91.627287][ T3210] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 91.639462][ T9505] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 91.647231][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 91.655784][ T3212] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program [ 91.805703][ T9516] ------------[ cut here ]------------ [ 91.811335][ T9516] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 91.820328][ T9516] WARNING: CPU: 1 PID: 9516 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 91.829780][ T9516] Kernel panic - not syncing: panic_on_warn set ... [ 91.836346][ T9516] CPU: 1 PID: 9516 Comm: syz-executor172 Not tainted 5.6.0-rc6-syzkaller #0 [ 91.844990][ T9516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.855026][ T9516] Call Trace: [ 91.858348][ T9516] dump_stack+0x188/0x20d [ 91.862668][ T9516] ? debug_print_object+0x120/0x250 [ 91.867855][ T9516] panic+0x2e3/0x75c [ 91.871744][ T9516] ? add_taint.cold+0x16/0x16 [ 91.876413][ T9516] ? __probe_kernel_read+0x188/0x1d0 [ 91.881684][ T9516] ? __warn.cold+0x14/0x35 [ 91.886097][ T9516] ? __warn+0xd5/0x1c8 [ 91.890176][ T9516] ? debug_print_object+0x160/0x250 [ 91.895356][ T9516] __warn.cold+0x2f/0x35 [ 91.899584][ T9516] ? debug_print_object+0x160/0x250 [ 91.904772][ T9516] report_bug+0x27b/0x2f0 [ 91.909100][ T9516] do_error_trap+0x12b/0x220 [ 91.913670][ T9516] ? debug_print_object+0x160/0x250 [ 91.918855][ T9516] do_invalid_op+0x32/0x40 [ 91.923249][ T9516] ? debug_print_object+0x160/0x250 [ 91.928441][ T9516] invalid_op+0x23/0x30 [ 91.932578][ T9516] RIP: 0010:debug_print_object+0x160/0x250 [ 91.938377][ T9516] 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 d8 cc b1 fd <0f> 0b 83 05 ab 9a d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 91.957969][ T9516] RSP: 0018:ffffc900020a7178 EFLAGS: 00010282 [ 91.964109][ T9516] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 91.972253][ T9516] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000414e21 [ 91.982400][ T9516] RBP: 0000000000000001 R08: ffff8880a7aac2c0 R09: fffffbfff180e578 [ 91.990357][ T9516] R10: fffffbfff180e577 R11: ffffffff8c072bbf R12: ffffffff897acba0 [ 91.998324][ T9516] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000414e3c [ 92.006315][ T9516] ? vprintk_func+0x81/0x17e [ 92.010898][ T9516] ? debug_print_object+0x160/0x250 [ 92.016082][ T9516] ? lockdep_hardirqs_on+0x417/0x5d0 [ 92.021800][ T9516] debug_object_activate+0x346/0x470 [ 92.027601][ T9516] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 92.033572][ T9516] ? debug_object_init_on_stack+0x20/0x20 [ 92.039294][ T9516] ? find_held_lock+0x2d/0x110 [ 92.044046][ T9516] ? free_object+0x70/0x70 [ 92.048449][ T9516] ? lock_downgrade+0x7f0/0x7f0 [ 92.053291][ T9516] ? delayed_work_timer_fn+0x90/0x90 [ 92.058805][ T9516] call_rcu+0x2c/0x690 [ 92.063907][ T9516] queue_rcu_work+0x82/0xa0 [ 92.068400][ T9516] route4_change+0x19e8/0x2250 [ 92.073194][ T9516] ? route4_destroy+0x800/0x800 [ 92.078055][ T9516] ? wait_for_completion+0x3c0/0x3c0 [ 92.083445][ T9516] tc_new_tfilter+0xa59/0x20b0 [ 92.088200][ T9516] ? route4_destroy+0x800/0x800 [ 92.093945][ T9516] ? tc_del_tfilter+0x1430/0x1430 [ 92.098970][ T9516] ? __lock_acquire+0x80b/0x3ca0 [ 92.104524][ T9516] ? apparmor_capable+0x454/0x8a0 [ 92.110334][ T9516] ? rcu_read_lock_held+0x9c/0xb0 [ 92.115905][ T9516] ? tc_del_tfilter+0x1430/0x1430 [ 92.121007][ T9516] rtnetlink_rcv_msg+0x810/0xad0 [ 92.125933][ T9516] ? rtnl_bridge_getlink+0x880/0x880 [ 92.131202][ T9516] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 92.136480][ T9516] ? __copy_skb_header+0x1e0/0x5b0 [ 92.141587][ T9516] ? skb_splice_bits+0x1a0/0x1a0 [ 92.146506][ T9516] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 92.152292][ T9516] ? kmem_cache_alloc+0x261/0x730 [ 92.157325][ T9516] netlink_rcv_skb+0x15a/0x410 [ 92.162086][ T9516] ? rtnl_bridge_getlink+0x880/0x880 [ 92.167533][ T9516] ? netlink_ack+0xa80/0xa80 [ 92.172120][ T9516] netlink_unicast+0x537/0x740 [ 92.176933][ T9516] ? netlink_attachskb+0x810/0x810 [ 92.182212][ T9516] ? _copy_from_iter_full+0x25c/0x870 [ 92.187687][ T9516] ? __phys_addr_symbol+0x2c/0x70 [ 92.192697][ T9516] ? __check_object_size+0x171/0x437 [ 92.197972][ T9516] netlink_sendmsg+0x882/0xe10 [ 92.202731][ T9516] ? aa_af_perm+0x260/0x260 [ 92.208172][ T9516] ? netlink_unicast+0x740/0x740 [ 92.213168][ T9516] ? netlink_unicast+0x740/0x740 [ 92.218205][ T9516] sock_sendmsg+0xcf/0x120 [ 92.222660][ T9516] ____sys_sendmsg+0x6b9/0x7d0 [ 92.227647][ T9516] ? kernel_sendmsg+0x50/0x50 [ 92.234974][ T9516] ___sys_sendmsg+0x100/0x170 [ 92.239651][ T9516] ? sendmsg_copy_msghdr+0x70/0x70 [ 92.244819][ T9516] ? __fget_files+0x329/0x4f0 [ 92.249789][ T9516] ? ksys_dup3+0x3c0/0x3c0 [ 92.254601][ T9516] ? __fget_light+0x208/0x270 [ 92.259272][ T9516] __sys_sendmsg+0xec/0x1b0 [ 92.263789][ T9516] ? __sys_sendmsg_sock+0xb0/0xb0 [ 92.268802][ T9516] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 92.274772][ T9516] ? __x64_sys_futex+0x380/0x4f0 [ 92.279713][ T9516] ? trace_hardirqs_off_caller+0x55/0x230 [ 92.285527][ T9516] ? do_syscall_64+0x21/0x7d0 [ 92.290190][ T9516] do_syscall_64+0xf6/0x7d0 [ 92.294691][ T9516] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.300568][ T9516] RIP: 0033:0x449739 [ 92.305350][ T9516] Code: e8 ec 0e 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 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 92.324954][ T9516] RSP: 002b:00007f47d6cf1d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 92.333347][ T9516] RAX: ffffffffffffffda RBX: 00000000006dec78 RCX: 0000000000449739 [ 92.341333][ T9516] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 92.349408][ T9516] RBP: 00000000006dec70 R08: 0000000000000000 R09: 0000000000000000 [ 92.357384][ T9516] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec7c [ 92.365370][ T9516] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 92.374993][ T9516] Kernel Offset: disabled [ 92.379323][ T9516] Rebooting in 86400 seconds..