[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.432483][ T27] audit: type=1800 audit(1583402276.544:25): pid=9675 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.452180][ T27] audit: type=1800 audit(1583402276.544:26): pid=9675 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.479254][ T27] audit: type=1800 audit(1583402276.554:27): pid=9675 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 '10.128.10.46' (ECDSA) to the list of known hosts. 2020/03/05 09:58:08 parsed 1 programs 2020/03/05 09:58:10 executed programs: 0 syzkaller login: [ 83.693222][ T9845] IPVS: ftp: loaded support on port[0] = 21 [ 83.749732][ T9845] chnl_net:caif_netlink_parms(): no params data found [ 83.786425][ T9845] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.794015][ T9845] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.802142][ T9845] device bridge_slave_0 entered promiscuous mode [ 83.811819][ T9845] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.818915][ T9845] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.826857][ T9845] device bridge_slave_1 entered promiscuous mode [ 83.843925][ T9845] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.854730][ T9845] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.874068][ T9845] team0: Port device team_slave_0 added [ 83.881263][ T9845] team0: Port device team_slave_1 added [ 83.895777][ T9845] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.902849][ T9845] 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. [ 83.928937][ T9845] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.941394][ T9845] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.948347][ T9845] 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. [ 83.974648][ T9845] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.052048][ T9845] device hsr_slave_0 entered promiscuous mode [ 84.119545][ T9845] device hsr_slave_1 entered promiscuous mode [ 84.254864][ T9845] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.312355][ T9845] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.381526][ T9845] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.432293][ T9845] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.483891][ T9845] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.491085][ T9845] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.498759][ T9845] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.506070][ T9845] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.548191][ T9845] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.563052][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.573459][ T3512] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.581500][ T3512] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.590483][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 84.603612][ T9845] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.614219][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.623071][ T2691] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.630160][ T2691] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.640729][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.649012][ T3512] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.656136][ T3512] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.676271][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.684949][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.696113][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.707874][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.721553][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.733474][ T9845] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.751631][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.759023][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.772068][ T9845] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.791317][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 84.801068][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.822094][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 84.831357][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.840020][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.847646][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.856642][ T9845] device veth0_vlan entered promiscuous mode [ 84.868246][ T9845] device veth1_vlan entered promiscuous mode [ 84.887465][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 84.895932][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 84.904902][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 84.913781][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.924108][ T9845] device veth0_macvtap entered promiscuous mode [ 84.934560][ T9845] device veth1_macvtap entered promiscuous mode [ 84.950341][ T9845] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.957769][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 84.966922][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 84.975421][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.984179][ T2691] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.996169][ T9845] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.003802][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.012408][ T3512] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.281932][ T9852] ------------[ cut here ]------------ [ 85.288123][ T9852] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 85.297245][ T9852] WARNING: CPU: 1 PID: 9852 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 85.306694][ T9852] Kernel panic - not syncing: panic_on_warn set ... [ 85.313264][ T9852] CPU: 1 PID: 9852 Comm: syz-executor.0 Not tainted 5.6.0-rc3-syzkaller #0 [ 85.321819][ T9852] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.331854][ T9852] Call Trace: [ 85.335131][ T9852] dump_stack+0x197/0x210 [ 85.339474][ T9852] ? debug_print_object+0x80/0x250 [ 85.344575][ T9852] panic+0x2e3/0x75c [ 85.348502][ T9852] ? add_taint.cold+0x16/0x16 [ 85.353173][ T9852] ? __kasan_check_write+0x14/0x20 [ 85.358264][ T9852] ? __warn.cold+0x14/0x3e [ 85.362673][ T9852] ? __warn+0xd9/0x1cf [ 85.366730][ T9852] ? debug_print_object+0x168/0x250 [ 85.371920][ T9852] __warn.cold+0x2f/0x3e [ 85.376155][ T9852] ? debug_print_object+0x168/0x250 [ 85.381348][ T9852] report_bug+0x289/0x300 [ 85.385671][ T9852] do_error_trap+0x11b/0x200 [ 85.390271][ T9852] do_invalid_op+0x37/0x50 [ 85.394727][ T9852] ? debug_print_object+0x168/0x250 [ 85.399926][ T9852] invalid_op+0x23/0x30 [ 85.404067][ T9852] RIP: 0010:debug_print_object+0x168/0x250 [ 85.409861][ T9852] Code: dd 00 e7 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 00 e7 91 88 48 c7 c7 60 dc 91 88 e8 07 6e 9f fd <0f> 0b 83 05 03 6c ff 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 [ 85.429478][ T9852] RSP: 0018:ffffc900023070b0 EFLAGS: 00010286 [ 85.435540][ T9852] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 85.443506][ T9852] RDX: 0000000000000000 RSI: ffffffff815ebe46 RDI: fffff52000460e08 [ 85.451460][ T9852] RBP: ffffc900023070f0 R08: ffff88809af0e040 R09: fffffbfff16a3370 [ 85.461081][ T9852] R10: fffffbfff16a336f R11: ffffffff8b519b7f R12: 0000000000000001 [ 85.469031][ T9852] R13: ffffffff89bac220 R14: 0000000000000000 R15: 1ffff92000460e24 [ 85.477004][ T9852] ? vprintk_func+0x86/0x189 [ 85.481595][ T9852] debug_object_activate+0x346/0x470 [ 85.486860][ T9852] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 85.492669][ T9852] ? debug_object_init_on_stack+0x20/0x20 [ 85.498368][ T9852] ? mark_lock+0xc2/0x1220 [ 85.502777][ T9852] ? find_held_lock+0x35/0x130 [ 85.507533][ T9852] ? delayed_work_timer_fn+0x90/0x90 [ 85.512816][ T9852] call_rcu+0x2f/0x700 [ 85.516874][ T9852] ? trace_hardirqs_on+0x67/0x240 [ 85.521893][ T9852] queue_rcu_work+0x8a/0xa0 [ 85.526382][ T9852] ? __route4_delete_filter+0xe0/0xe0 [ 85.531737][ T9852] tcf_queue_work+0xd3/0x110 [ 85.536309][ T9852] route4_change+0x19e8/0x2250 [ 85.541060][ T9852] ? route4_destroy+0x850/0x850 [ 85.545907][ T9852] ? __kasan_check_write+0x14/0x20 [ 85.551025][ T9852] ? wait_for_completion+0x440/0x440 [ 85.556296][ T9852] ? route4_destroy+0x850/0x850 [ 85.561139][ T9852] tc_new_tfilter+0xb82/0x2480 [ 85.565933][ T9852] ? tc_del_tfilter+0x1560/0x1560 [ 85.570943][ T9852] ? __kasan_check_read+0x11/0x20 [ 85.575957][ T9852] ? __lock_acquire+0x8a0/0x4a00 [ 85.580880][ T9852] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.587116][ T9852] ? __dev_queue_xmit+0x172b/0x3080 [ 85.592301][ T9852] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 85.597400][ T9852] ? find_held_lock+0x35/0x130 [ 85.602160][ T9852] ? rcu_read_lock_held_common+0x130/0x130 [ 85.607952][ T9852] ? tc_del_tfilter+0x1560/0x1560 [ 85.612960][ T9852] ? __kasan_check_read+0x11/0x20 [ 85.617986][ T9852] ? tc_del_tfilter+0x1560/0x1560 [ 85.623014][ T9852] rtnetlink_rcv_msg+0x824/0xaf0 [ 85.627958][ T9852] ? rtnl_bridge_getlink+0x910/0x910 [ 85.633232][ T9852] ? netlink_deliver_tap+0x226/0xbf0 [ 85.638503][ T9852] ? find_held_lock+0x35/0x130 [ 85.643271][ T9852] netlink_rcv_skb+0x177/0x450 [ 85.648028][ T9852] ? rtnl_bridge_getlink+0x910/0x910 [ 85.653491][ T9852] ? netlink_ack+0xb50/0xb50 [ 85.658091][ T9852] ? __kasan_check_read+0x11/0x20 [ 85.663118][ T9852] ? netlink_deliver_tap+0x248/0xbf0 [ 85.668392][ T9852] rtnetlink_rcv+0x1d/0x30 [ 85.672792][ T9852] netlink_unicast+0x59e/0x7e0 [ 85.677545][ T9852] ? netlink_attachskb+0x870/0x870 [ 85.682645][ T9852] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 85.688344][ T9852] ? __check_object_size+0x3d/0x437 [ 85.693535][ T9852] netlink_sendmsg+0x91c/0xea0 [ 85.698302][ T9852] ? netlink_unicast+0x7e0/0x7e0 [ 85.703225][ T9852] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 85.708755][ T9852] ? apparmor_socket_sendmsg+0x2a/0x30 [ 85.714197][ T9852] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.720454][ T9852] ? security_socket_sendmsg+0x8d/0xc0 [ 85.725911][ T9852] ? netlink_unicast+0x7e0/0x7e0 [ 85.730837][ T9852] sock_sendmsg+0xd7/0x130 [ 85.735250][ T9852] ____sys_sendmsg+0x753/0x880 [ 85.740004][ T9852] ? kernel_sendmsg+0x50/0x50 [ 85.744689][ T9852] ? __fget_files+0x337/0x520 [ 85.749364][ T9852] ? find_held_lock+0x35/0x130 [ 85.754160][ T9852] ___sys_sendmsg+0x100/0x170 [ 85.758826][ T9852] ? sendmsg_copy_msghdr+0x70/0x70 [ 85.763930][ T9852] ? __kasan_check_read+0x11/0x20 [ 85.768951][ T9852] ? __fget_files+0x359/0x520 [ 85.773755][ T9852] ? ksys_dup3+0x3e0/0x3e0 [ 85.778180][ T9852] ? __fget_light+0x1ad/0x270 [ 85.782892][ T9852] ? __fdget+0x1b/0x20 [ 85.786991][ T9852] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.793272][ T9852] __sys_sendmsg+0x105/0x1d0 [ 85.797863][ T9852] ? __sys_sendmsg_sock+0xc0/0xc0 [ 85.802896][ T9852] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 85.808334][ T9852] ? do_syscall_64+0x26/0x790 [ 85.812992][ T9852] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.819039][ T9852] ? do_syscall_64+0x26/0x790 [ 85.823702][ T9852] __x64_sys_sendmsg+0x78/0xb0 [ 85.828449][ T9852] do_syscall_64+0xfa/0x790 [ 85.832970][ T9852] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.838842][ T9852] RIP: 0033:0x45c479 [ 85.842725][ T9852] 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 [ 85.862330][ T9852] RSP: 002b:00007f0ed0ba5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 85.870730][ T9852] RAX: ffffffffffffffda RBX: 00007f0ed0ba66d4 RCX: 000000000045c479 [ 85.878805][ T9852] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000007 [ 85.886760][ T9852] RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 [ 85.894720][ T9852] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 85.902676][ T9852] R13: 00000000000009fa R14: 00000000004cc72b R15: 000000000076bf2c [ 85.912321][ T9852] Kernel Offset: disabled [ 85.916722][ T9852] Rebooting in 86400 seconds..