[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 63.454154][ T27] audit: type=1800 audit(1584537487.984:25): pid=9366 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 63.474879][ T27] audit: type=1800 audit(1584537487.984:26): pid=9366 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 63.525595][ T27] audit: type=1800 audit(1584537487.984:27): pid=9366 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 '10.128.0.176' (ECDSA) to the list of known hosts. syzkaller login: [ 78.653489][ T9521] IPVS: ftp: loaded support on port[0] = 21 [ 78.716456][ T9521] chnl_net:caif_netlink_parms(): no params data found [ 78.756497][ T9521] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.763971][ T9521] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.772062][ T9521] device bridge_slave_0 entered promiscuous mode [ 78.780550][ T9521] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.787804][ T9521] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.795465][ T9521] device bridge_slave_1 entered promiscuous mode [ 78.813277][ T9521] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.824185][ T9521] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.844671][ T9521] team0: Port device team_slave_0 added [ 78.852238][ T9521] team0: Port device team_slave_1 added [ 78.869276][ T9521] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.876325][ T9521] 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. [ 78.902713][ T9521] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.915057][ T9521] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.922056][ T9521] 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. [ 78.948013][ T9521] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.028609][ T9521] device hsr_slave_0 entered promiscuous mode [ 79.065978][ T9521] device hsr_slave_1 entered promiscuous mode [ 79.202616][ T9521] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.238901][ T9521] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.299434][ T9521] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.358417][ T9521] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.412439][ T9521] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.419709][ T9521] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.427674][ T9521] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.434740][ T9521] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.479763][ T9521] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.493299][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.503565][ T2694] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.512502][ T2694] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.521810][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 79.534876][ T9521] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.546188][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.554729][ T46] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.561843][ T46] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.574780][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.584340][ T2694] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.591451][ T2694] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.616586][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.625232][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.634349][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.646574][ T9521] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 79.658343][ T9521] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.668938][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.677415][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.696373][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.703827][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.716326][ T9521] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.735118][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 79.744559][ T2694] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.772043][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 79.781041][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.789904][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.798481][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.806902][ T9521] device veth0_vlan entered promiscuous mode [ 79.819072][ T9521] device veth1_vlan entered promiscuous mode [ 79.840863][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.850462][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.859108][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 79.867739][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.878590][ T9521] device veth0_macvtap entered promiscuous mode [ 79.889706][ T9521] device veth1_macvtap entered promiscuous mode [ 79.905211][ T9521] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.913060][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.922769][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 79.931615][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.940387][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.953117][ T9521] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.961382][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.970371][ T2704] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 80.136628][ T9528] ------------[ cut here ]------------ [ 80.142397][ T9528] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 80.151340][ T9528] WARNING: CPU: 0 PID: 9528 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 80.160788][ T9528] Kernel panic - not syncing: panic_on_warn set ... [ 80.167367][ T9528] CPU: 0 PID: 9528 Comm: syz-executor774 Not tainted 5.6.0-rc5-syzkaller #0 [ 80.176027][ T9528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.186152][ T9528] Call Trace: [ 80.189445][ T9528] dump_stack+0x188/0x20d [ 80.193764][ T9528] ? debug_print_object+0x80/0x250 [ 80.198870][ T9528] panic+0x2e3/0x75c [ 80.202749][ T9528] ? add_taint.cold+0x16/0x16 [ 80.207434][ T9528] ? __probe_kernel_read+0x188/0x1d0 [ 80.212704][ T9528] ? __warn.cold+0x14/0x35 [ 80.217100][ T9528] ? __warn+0xd5/0x1c8 [ 80.221410][ T9528] ? debug_print_object+0x160/0x250 [ 80.226596][ T9528] __warn.cold+0x2f/0x35 [ 80.230824][ T9528] ? debug_print_object+0x160/0x250 [ 80.236104][ T9528] report_bug+0x27b/0x2f0 [ 80.240439][ T9528] do_error_trap+0x12b/0x220 [ 80.245011][ T9528] ? debug_print_object+0x160/0x250 [ 80.250214][ T9528] do_invalid_op+0x32/0x40 [ 80.254622][ T9528] ? debug_print_object+0x160/0x250 [ 80.259807][ T9528] invalid_op+0x23/0x30 [ 80.263946][ T9528] RIP: 0010:debug_print_object+0x160/0x250 [ 80.269733][ T9528] 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 8b cf d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 80.289417][ T9528] RSP: 0018:ffffc900022b7178 EFLAGS: 00010282 [ 80.295470][ T9528] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 80.303430][ T9528] RDX: 0000000000000000 RSI: ffffffff815bfe61 RDI: fffff52000456e21 [ 80.311380][ T9528] RBP: 0000000000000001 R08: ffff88809e990440 R09: fffffbfff180f778 [ 80.319342][ T9528] R10: fffffbfff180f777 R11: ffffffff8c07bbbf R12: ffffffff897acba0 [ 80.327303][ T9528] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000456e3c [ 80.335298][ T9528] ? vprintk_func+0x81/0x17e [ 80.339883][ T9528] ? debug_print_object+0x160/0x250 [ 80.345084][ T9528] ? lockdep_hardirqs_on+0x417/0x5d0 [ 80.350359][ T9528] debug_object_activate+0x346/0x470 [ 80.355627][ T9528] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 80.361414][ T9528] ? debug_object_init_on_stack+0x20/0x20 [ 80.367140][ T9528] ? find_held_lock+0x2d/0x110 [ 80.371893][ T9528] ? free_object+0x70/0x70 [ 80.376306][ T9528] ? lock_downgrade+0x7f0/0x7f0 [ 80.381133][ T9528] ? delayed_work_timer_fn+0x90/0x90 [ 80.386394][ T9528] call_rcu+0x2c/0x690 [ 80.390486][ T9528] queue_rcu_work+0x82/0xa0 [ 80.394970][ T9528] route4_change+0x19e8/0x2250 [ 80.400016][ T9528] ? route4_destroy+0x800/0x800 [ 80.404874][ T9528] ? wait_for_completion+0x3c0/0x3c0 [ 80.410145][ T9528] tc_new_tfilter+0xa59/0x20b0 [ 80.414979][ T9528] ? route4_destroy+0x800/0x800 [ 80.419908][ T9528] ? tc_del_tfilter+0x1430/0x1430 [ 80.424922][ T9528] ? __lock_acquire+0x80b/0x3ca0 [ 80.429956][ T9528] ? apparmor_capable+0x454/0x8a0 [ 80.434973][ T9528] ? rcu_read_lock_held+0x9c/0xb0 [ 80.439997][ T9528] ? tc_del_tfilter+0x1430/0x1430 [ 80.445000][ T9528] rtnetlink_rcv_msg+0x810/0xad0 [ 80.449917][ T9528] ? rtnl_bridge_getlink+0x870/0x870 [ 80.455190][ T9528] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 80.460468][ T9528] ? __copy_skb_header+0x290/0x5b0 [ 80.465559][ T9528] ? skb_splice_bits+0x1a0/0x1a0 [ 80.470478][ T9528] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 80.476260][ T9528] ? kmem_cache_alloc+0x261/0x730 [ 80.481264][ T9528] netlink_rcv_skb+0x15a/0x410 [ 80.486039][ T9528] ? rtnl_bridge_getlink+0x870/0x870 [ 80.491303][ T9528] ? netlink_ack+0xa80/0xa80 [ 80.495876][ T9528] netlink_unicast+0x537/0x740 [ 80.500618][ T9528] ? netlink_attachskb+0x810/0x810 [ 80.505705][ T9528] ? _copy_from_iter_full+0x25c/0x870 [ 80.511057][ T9528] ? __phys_addr_symbol+0x2c/0x70 [ 80.516079][ T9528] ? __check_object_size+0x171/0x437 [ 80.521436][ T9528] netlink_sendmsg+0x882/0xe10 [ 80.526204][ T9528] ? aa_af_perm+0x260/0x260 [ 80.530699][ T9528] ? netlink_unicast+0x740/0x740 [ 80.535644][ T9528] ? netlink_unicast+0x740/0x740 [ 80.540565][ T9528] sock_sendmsg+0xcf/0x120 [ 80.544963][ T9528] ____sys_sendmsg+0x6b9/0x7d0 [ 80.549880][ T9528] ? kernel_sendmsg+0x50/0x50 [ 80.554569][ T9528] ___sys_sendmsg+0x100/0x170 [ 80.559380][ T9528] ? sendmsg_copy_msghdr+0x70/0x70 [ 80.564493][ T9528] ? __fget_files+0x329/0x4f0 [ 80.569163][ T9528] ? ksys_dup3+0x3c0/0x3c0 [ 80.573562][ T9528] ? __fget_light+0x208/0x270 [ 80.578225][ T9528] __sys_sendmsg+0xec/0x1b0 [ 80.582799][ T9528] ? __sys_sendmsg_sock+0xb0/0xb0 [ 80.587805][ T9528] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 80.593767][ T9528] ? __x64_sys_futex+0x380/0x4f0 [ 80.598691][ T9528] ? trace_hardirqs_off_caller+0x55/0x230 [ 80.604389][ T9528] ? do_syscall_64+0x21/0x7d0 [ 80.609045][ T9528] do_syscall_64+0xf6/0x7d0 [ 80.613538][ T9528] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.619409][ T9528] RIP: 0033:0x44acd9 [ 80.623280][ T9528] Code: e8 0c 1b 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 3b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 80.642957][ T9528] RSP: 002b:00007fb7eeb51ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.651389][ T9528] RAX: ffffffffffffffda RBX: 00000000006e1c78 RCX: 000000000044acd9 [ 80.659363][ T9528] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 80.667325][ T9528] RBP: 00000000006e1c70 R08: 0000000000000000 R09: 0000000000000000 [ 80.675281][ T9528] R10: 0000000000000010 R11: 0000000000000246 R12: 00000000006e1c7c [ 80.683235][ T9528] R13: 00007ffd76b88f4f R14: 00007fb7eeb529c0 R15: 00000000006e1c7c [ 80.693133][ T9528] Kernel Offset: disabled [ 80.697664][ T9528] Rebooting in 86400 seconds..