[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 75.950761][ T27] audit: type=1800 audit(1584332845.092:25): pid=9201 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 75.971150][ T27] audit: type=1800 audit(1584332845.092:26): pid=9201 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 75.998024][ T27] audit: type=1800 audit(1584332845.092:27): pid=9201 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 '10.128.10.48' (ECDSA) to the list of known hosts. syzkaller login: [ 84.931090][ T9356] IPVS: ftp: loaded support on port[0] = 21 [ 84.983746][ T9356] chnl_net:caif_netlink_parms(): no params data found [ 85.023803][ T9356] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.031507][ T9356] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.039622][ T9356] device bridge_slave_0 entered promiscuous mode [ 85.048809][ T9356] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.055990][ T9356] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.064046][ T9356] device bridge_slave_1 entered promiscuous mode [ 85.082569][ T9356] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 85.093606][ T9356] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 85.115192][ T9356] team0: Port device team_slave_0 added [ 85.122656][ T9356] team0: Port device team_slave_1 added [ 85.137558][ T9356] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 85.144526][ T9356] 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. [ 85.170610][ T9356] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 85.183068][ T9356] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 85.190705][ T9356] 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. [ 85.216705][ T9356] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 85.279373][ T9356] device hsr_slave_0 entered promiscuous mode [ 85.357462][ T9356] device hsr_slave_1 entered promiscuous mode [ 85.474471][ T9356] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.520153][ T9356] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.600226][ T9356] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.670375][ T9356] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.751970][ T9356] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.759156][ T9356] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.766840][ T9356] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.775464][ T9356] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.819833][ T9356] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.834074][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.843589][ T3237] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.852220][ T3237] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.860718][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 85.873769][ T9356] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.885147][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.893927][ T2699] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.901317][ T2699] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.913071][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.922507][ T3237] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.929859][ T3237] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.949203][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.958520][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.970513][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.986035][ T9356] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 85.996962][ T9356] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 86.010503][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 86.019741][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 86.029101][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 86.037526][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 86.046013][ T3235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 86.064967][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 86.072462][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 86.088105][ T9356] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 86.106152][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 86.115193][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 86.134945][ T9356] device veth0_vlan entered promiscuous mode [ 86.141503][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 86.150947][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 86.159685][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 86.167592][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 86.181262][ T9356] device veth1_vlan entered promiscuous mode [ 86.203267][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 86.211898][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 86.220247][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 86.229165][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 86.240485][ T9356] device veth0_macvtap entered promiscuous mode [ 86.251794][ T9356] device veth1_macvtap entered promiscuous mode [ 86.268687][ T9356] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.276106][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 86.285582][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 86.293718][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 86.302577][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 86.315213][ T9356] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.323648][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.332604][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program [ 86.519304][ T9368] ------------[ cut here ]------------ [ 86.524830][ T9368] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 86.534112][ T9368] WARNING: CPU: 1 PID: 9368 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 86.543568][ T9368] Kernel panic - not syncing: panic_on_warn set ... [ 86.550140][ T9368] CPU: 1 PID: 9368 Comm: syz-executor163 Not tainted 5.6.0-rc5-syzkaller #0 [ 86.558803][ T9368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.568838][ T9368] Call Trace: [ 86.572119][ T9368] dump_stack+0x188/0x20d [ 86.576445][ T9368] ? debug_print_object+0x80/0x250 [ 86.581561][ T9368] panic+0x2e3/0x75c [ 86.585445][ T9368] ? add_taint.cold+0x16/0x16 [ 86.590128][ T9368] ? __probe_kernel_read+0x188/0x1d0 [ 86.595404][ T9368] ? __warn.cold+0x14/0x35 [ 86.599802][ T9368] ? __warn+0xd5/0x1c8 [ 86.603852][ T9368] ? debug_print_object+0x160/0x250 [ 86.609028][ T9368] __warn.cold+0x2f/0x35 [ 86.613271][ T9368] ? debug_print_object+0x160/0x250 [ 86.618457][ T9368] report_bug+0x27b/0x2f0 [ 86.623550][ T9368] do_error_trap+0x12b/0x220 [ 86.628743][ T9368] ? debug_print_object+0x160/0x250 [ 86.633921][ T9368] do_invalid_op+0x32/0x40 [ 86.638317][ T9368] ? debug_print_object+0x160/0x250 [ 86.643517][ T9368] invalid_op+0x23/0x30 [ 86.647676][ T9368] RIP: 0010:debug_print_object+0x160/0x250 [ 86.653558][ T9368] Code: dd c0 fa 51 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd c0 fa 51 88 48 c7 c7 20 f0 51 88 e8 a8 bd b1 fd <0f> 0b 83 05 cb cd d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 86.673287][ T9368] RSP: 0018:ffffc90002077178 EFLAGS: 00010282 [ 86.679341][ T9368] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 86.687305][ T9368] RDX: 0000000000000000 RSI: ffffffff815bfe61 RDI: fffff5200040ee21 [ 86.695373][ T9368] RBP: 0000000000000001 R08: ffff888087f64440 R09: ffffed1015ce6659 [ 86.703444][ T9368] R10: ffffed1015ce6658 R11: ffff8880ae7332c7 R12: ffffffff897acba0 [ 86.711506][ T9368] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200040ee3c [ 86.719498][ T9368] ? vprintk_func+0x81/0x17e [ 86.724088][ T9368] ? debug_print_object+0x160/0x250 [ 86.729378][ T9368] ? lockdep_hardirqs_on+0x417/0x5d0 [ 86.734647][ T9368] debug_object_activate+0x346/0x470 [ 86.739930][ T9368] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 86.745724][ T9368] ? debug_object_init_on_stack+0x20/0x20 [ 86.751432][ T9368] ? find_held_lock+0x2d/0x110 [ 86.756183][ T9368] ? free_object+0x70/0x70 [ 86.760580][ T9368] ? lock_downgrade+0x7f0/0x7f0 [ 86.765416][ T9368] ? delayed_work_timer_fn+0x90/0x90 [ 86.770683][ T9368] call_rcu+0x2c/0x690 [ 86.774751][ T9368] queue_rcu_work+0x82/0xa0 [ 86.779240][ T9368] route4_change+0x19e8/0x2250 [ 86.783990][ T9368] ? route4_destroy+0x800/0x800 [ 86.788834][ T9368] ? wait_for_completion+0x3c0/0x3c0 [ 86.794101][ T9368] tc_new_tfilter+0xa59/0x20b0 [ 86.798853][ T9368] ? route4_destroy+0x800/0x800 [ 86.803696][ T9368] ? tc_del_tfilter+0x1430/0x1430 [ 86.808719][ T9368] ? __lock_acquire+0x80b/0x3ca0 [ 86.813644][ T9368] ? apparmor_capable+0x454/0x8a0 [ 86.818657][ T9368] ? rcu_read_lock_held+0x9c/0xb0 [ 86.823719][ T9368] ? tc_del_tfilter+0x1430/0x1430 [ 86.828756][ T9368] rtnetlink_rcv_msg+0x810/0xad0 [ 86.833687][ T9368] ? rtnl_bridge_getlink+0x870/0x870 [ 86.838957][ T9368] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 86.844232][ T9368] ? __copy_skb_header+0x290/0x5b0 [ 86.849351][ T9368] ? skb_splice_bits+0x1a0/0x1a0 [ 86.854293][ T9368] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 86.860084][ T9368] ? kmem_cache_alloc+0x261/0x730 [ 86.865118][ T9368] netlink_rcv_skb+0x15a/0x410 [ 86.869880][ T9368] ? rtnl_bridge_getlink+0x870/0x870 [ 86.875149][ T9368] ? netlink_ack+0xa80/0xa80 [ 86.879729][ T9368] netlink_unicast+0x537/0x740 [ 86.884478][ T9368] ? netlink_attachskb+0x810/0x810 [ 86.889586][ T9368] ? _copy_from_iter_full+0x25c/0x870 [ 86.894945][ T9368] ? __phys_addr_symbol+0x2c/0x70 [ 86.899947][ T9368] ? __check_object_size+0x171/0x437 [ 86.905223][ T9368] netlink_sendmsg+0x882/0xe10 [ 86.909974][ T9368] ? aa_af_perm+0x260/0x260 [ 86.914482][ T9368] ? netlink_unicast+0x740/0x740 [ 86.919417][ T9368] ? netlink_unicast+0x740/0x740 [ 86.924344][ T9368] sock_sendmsg+0xcf/0x120 [ 86.928755][ T9368] ____sys_sendmsg+0x6b9/0x7d0 [ 86.933513][ T9368] ? kernel_sendmsg+0x50/0x50 [ 86.938190][ T9368] ___sys_sendmsg+0x100/0x170 [ 86.942856][ T9368] ? sendmsg_copy_msghdr+0x70/0x70 [ 86.947978][ T9368] ? __fget_files+0x329/0x4f0 [ 86.952648][ T9368] ? ksys_dup3+0x3c0/0x3c0 [ 86.957130][ T9368] ? __lock_acquire+0x14bd/0x3ca0 [ 86.964294][ T9368] ? __fget_light+0x208/0x270 [ 86.968976][ T9368] __sys_sendmsg+0xec/0x1b0 [ 86.973497][ T9368] ? __sys_sendmsg_sock+0xb0/0xb0 [ 86.978620][ T9368] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 86.984634][ T9368] ? __x64_sys_futex+0x380/0x4f0 [ 86.989570][ T9368] ? trace_hardirqs_off_caller+0x55/0x230 [ 86.995392][ T9368] ? do_syscall_64+0x21/0x7d0 [ 87.000108][ T9368] do_syscall_64+0xf6/0x7d0 [ 87.004751][ T9368] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.010684][ T9368] RIP: 0033:0x449739 [ 87.014650][ T9368] 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 [ 87.034243][ T9368] RSP: 002b:00007f314f62cd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 87.042641][ T9368] RAX: ffffffffffffffda RBX: 00000000006dec88 RCX: 0000000000449739 [ 87.050599][ T9368] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 87.058582][ T9368] RBP: 00000000006dec80 R08: 0000000000000000 R09: 0000000000000000 [ 87.066536][ T9368] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec8c [ 87.074494][ T9368] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 87.084024][ T9368] Kernel Offset: disabled [ 87.088424][ T9368] Rebooting in 86400 seconds..