[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.292086][ T27] audit: type=1800 audit(1584020710.100:25): pid=8583 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 53.312270][ T27] audit: type=1800 audit(1584020710.100:26): pid=8583 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 53.362324][ T27] audit: type=1800 audit(1584020710.110:27): pid=8583 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 '10.128.0.121' (ECDSA) to the list of known hosts. syzkaller login: [ 65.155909][ T8736] IPVS: ftp: loaded support on port[0] = 21 [ 65.208393][ T8736] chnl_net:caif_netlink_parms(): no params data found [ 65.243065][ T8736] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.250886][ T8736] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.258625][ T8736] device bridge_slave_0 entered promiscuous mode [ 65.267090][ T8736] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.274215][ T8736] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.282002][ T8736] device bridge_slave_1 entered promiscuous mode [ 65.298092][ T8736] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.309301][ T8736] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.327514][ T8736] team0: Port device team_slave_0 added [ 65.334958][ T8736] team0: Port device team_slave_1 added [ 65.347987][ T8736] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.355024][ T8736] 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. [ 65.381777][ T8736] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.393988][ T8736] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.401194][ T8736] 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. [ 65.427116][ T8736] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.501568][ T8736] device hsr_slave_0 entered promiscuous mode [ 65.540068][ T8736] device hsr_slave_1 entered promiscuous mode [ 65.637271][ T8736] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.682470][ T8736] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.732711][ T8736] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.791711][ T8736] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.853733][ T8736] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.861007][ T8736] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.868657][ T8736] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.875884][ T8736] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.914765][ T8736] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.927959][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.937491][ T2794] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.945697][ T2794] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.953916][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 65.966939][ T8736] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.977154][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.985554][ T2752] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.993143][ T2752] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.004801][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.014055][ T2794] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.021373][ T2794] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.040546][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.049337][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.064037][ T8736] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.074546][ T8736] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.087759][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.096188][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.104895][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.113505][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.130226][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.137742][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.148083][ T8736] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.165691][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.184609][ T8736] device veth0_vlan entered promiscuous mode [ 66.191874][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.200780][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.208435][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.220334][ T8736] device veth1_vlan entered promiscuous mode [ 66.230555][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.238485][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.256944][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.265387][ T2752] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.278488][ T8736] device veth0_macvtap entered promiscuous mode [ 66.287946][ T8736] device veth1_macvtap entered promiscuous mode [ 66.303797][ T8736] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.311754][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.320717][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.328803][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.337819][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.349047][ T8736] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.357298][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.366315][ T2794] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 66.551187][ T8742] ------------[ cut here ]------------ [ 66.556677][ T8742] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 66.565639][ T8742] WARNING: CPU: 1 PID: 8742 at lib/debugobjects.c:488 debug_object_activate+0x4ef/0x5f0 [ 66.575376][ T8742] Kernel panic - not syncing: panic_on_warn set ... [ 66.582173][ T8742] CPU: 1 PID: 8742 Comm: syz-executor969 Not tainted 5.6.0-rc5-syzkaller #0 [ 66.591602][ T8742] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.601997][ T8742] Call Trace: [ 66.605275][ T8742] dump_stack+0x1e9/0x30e [ 66.609623][ T8742] panic+0x264/0x7a0 [ 66.613510][ T8742] ? __warn+0x102/0x210 [ 66.617715][ T8742] ? debug_object_activate+0x4ef/0x5f0 [ 66.623162][ T8742] __warn+0x209/0x210 [ 66.627126][ T8742] ? debug_object_activate+0x4ef/0x5f0 [ 66.632574][ T8742] report_bug+0x1ac/0x2d0 [ 66.636892][ T8742] do_error_trap+0xca/0x1c0 [ 66.641374][ T8742] do_invalid_op+0x32/0x40 [ 66.646375][ T8742] ? debug_object_activate+0x4ef/0x5f0 [ 66.652850][ T8742] invalid_op+0x23/0x30 [ 66.656982][ T8742] RIP: 0010:debug_object_activate+0x4ef/0x5f0 [ 66.663042][ T8742] Code: 74 08 4c 89 f7 e8 e1 3e 18 fe 4d 8b 06 48 c7 c7 13 08 d1 88 48 c7 c6 34 6a e6 88 48 89 ea 89 d9 4d 89 e9 31 c0 e8 01 d8 ae fd <0f> 0b ff 05 8d 40 b1 05 48 8b 5c 24 20 48 83 c3 20 48 89 d8 48 c1 [ 66.682796][ T8742] RSP: 0018:ffffc90002167450 EFLAGS: 00010246 [ 66.688840][ T8742] RAX: 80a74029eab5f500 RBX: 0000000000000001 RCX: ffff8880973e6300 [ 66.696788][ T8742] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 66.704738][ T8742] RBP: ffffffff88d4e54a R08: ffffffff815e16d6 R09: fffffbfff15db918 [ 66.712697][ T8742] R10: fffffbfff15db918 R11: 0000000000000000 R12: dffffc0000000000 [ 66.720658][ T8742] R13: 0000000000000000 R14: ffffffff890d9b68 R15: ffff88809fdf1098 [ 66.728717][ T8742] ? vprintk_emit+0x2e6/0x3b0 [ 66.733383][ T8742] ? queue_rcu_work+0x90/0x90 [ 66.738047][ T8742] call_rcu+0x37/0x630 [ 66.742094][ T8742] ? lockdep_init_map+0x26/0x670 [ 66.747024][ T8742] queue_rcu_work+0x74/0x90 [ 66.751520][ T8742] route4_change+0x18e8/0x1d90 [ 66.756295][ T8742] tc_new_tfilter+0x1490/0x2f50 [ 66.761133][ T8742] ? route4_get+0x380/0x380 [ 66.765657][ T8742] ? tcf_tunnel_encap_put_tunnel+0x20/0x20 [ 66.771444][ T8742] rtnetlink_rcv_msg+0x8fb/0xd40 [ 66.776435][ T8742] ? __local_bh_enable_ip+0x133/0x230 [ 66.781801][ T8742] ? local_bh_enable+0x5/0x20 [ 66.786469][ T8742] ? __local_bh_enable_ip+0x133/0x230 [ 66.792001][ T8742] ? __dev_queue_xmit+0x1c47/0x28a0 [ 66.797313][ T8742] ? check_preemption_disabled+0x40/0x240 [ 66.803008][ T8742] ? debug_smp_processor_id+0x5/0x20 [ 66.808289][ T8742] netlink_rcv_skb+0x190/0x3a0 [ 66.813041][ T8742] ? rtnetlink_bind+0x80/0x80 [ 66.817706][ T8742] netlink_unicast+0x786/0x940 [ 66.822473][ T8742] netlink_sendmsg+0xa57/0xd70 [ 66.827229][ T8742] ? netlink_getsockopt+0x9d0/0x9d0 [ 66.832416][ T8742] ____sys_sendmsg+0x4f9/0x7c0 [ 66.837192][ T8742] __sys_sendmsg+0x1ed/0x290 [ 66.841872][ T8742] ? check_preemption_disabled+0x40/0x240 [ 66.847640][ T8742] ? rcu_read_lock_sched_held+0x106/0x170 [ 66.853358][ T8742] ? __fpregs_load_activate+0x168/0x1f0 [ 66.858910][ T8742] ? trace_irq_disable_rcuidle+0x1f/0x1d0 [ 66.864631][ T8742] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 66.870680][ T8742] ? do_syscall_64+0x19/0x1b0 [ 66.875348][ T8742] do_syscall_64+0xf3/0x1b0 [ 66.879829][ T8742] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 66.885703][ T8742] RIP: 0033:0x44ab09 [ 66.889571][ T8742] Code: e8 ec 1a 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 [ 66.909248][ T8742] RSP: 002b:00007f8bf9344ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 66.917643][ T8742] RAX: ffffffffffffffda RBX: 00000000006e1c78 RCX: 000000000044ab09 [ 66.925601][ T8742] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 66.933668][ T8742] RBP: 00000000006e1c70 R08: 0000000000000000 R09: 0000000000000000 [ 66.941614][ T8742] R10: 0000000000000010 R11: 0000000000000246 R12: 00000000006e1c7c [ 66.949559][ T8742] R13: 00007fff5d8b6bcf R14: 00007f8bf93459c0 R15: 00000000006e1c7c [ 66.958962][ T8742] Kernel Offset: disabled [ 66.963316][ T8742] Rebooting in 86400 seconds..