[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.127828][ T26] audit: type=1800 audit(1584889383.454:25): pid=9452 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.150204][ T26] audit: type=1800 audit(1584889383.464:26): pid=9452 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.193039][ T26] audit: type=1800 audit(1584889383.464:27): pid=9452 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 '10.128.0.234' (ECDSA) to the list of known hosts. syzkaller login: [ 79.309892][ T9605] IPVS: ftp: loaded support on port[0] = 21 [ 79.364081][ T9605] chnl_net:caif_netlink_parms(): no params data found [ 79.406070][ T9605] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.414891][ T9605] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.423103][ T9605] device bridge_slave_0 entered promiscuous mode [ 79.433700][ T9605] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.440818][ T9605] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.448646][ T9605] device bridge_slave_1 entered promiscuous mode [ 79.466847][ T9605] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.478111][ T9605] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.499158][ T9605] team0: Port device team_slave_0 added [ 79.506757][ T9605] team0: Port device team_slave_1 added [ 79.522374][ T9605] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.531653][ T9605] 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. [ 79.557976][ T9605] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.570515][ T9605] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.577765][ T9605] 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. [ 79.604559][ T9605] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.665050][ T9605] device hsr_slave_0 entered promiscuous mode [ 79.703045][ T9605] device hsr_slave_1 entered promiscuous mode [ 79.845241][ T9605] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.895647][ T9605] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.965704][ T9605] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.026091][ T9605] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.099992][ T9605] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.110262][ T9605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.118125][ T9605] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.125603][ T9605] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.171545][ T9605] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.185424][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.196084][ T2688] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.204152][ T2688] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.213748][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 80.228360][ T9605] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.240594][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.250560][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.257763][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.270930][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.280284][ T2688] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.287402][ T2688] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.314321][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.325242][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.334238][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.343827][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.356536][ T9605] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 80.368426][ T9605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.380288][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.401410][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.410166][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.423257][ T9605] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.443689][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 80.452304][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.474297][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 80.484504][ T2688] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.496081][ T9605] device veth0_vlan entered promiscuous mode [ 80.504872][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.513940][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.527710][ T9605] device veth1_vlan entered promiscuous mode [ 80.548982][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.557727][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.567432][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.576559][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.587829][ T9605] device veth0_macvtap entered promiscuous mode [ 80.600000][ T9605] device veth1_macvtap entered promiscuous mode [ 80.617648][ T9605] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.628634][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.637268][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.646447][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.656811][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.669210][ T9605] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.676732][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.685730][ T2692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 80.846151][ T9612] ------------[ cut here ]------------ [ 80.852543][ T9612] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 80.864264][ T9612] WARNING: CPU: 0 PID: 9612 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 80.874188][ T9612] Kernel panic - not syncing: panic_on_warn set ... [ 80.880776][ T9612] CPU: 0 PID: 9612 Comm: syz-executor757 Not tainted 5.6.0-rc6-syzkaller #0 [ 80.889584][ T9612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.900884][ T9612] Call Trace: [ 80.904196][ T9612] dump_stack+0x188/0x20d [ 80.908547][ T9612] ? debug_print_object+0xe0/0x250 [ 80.913734][ T9612] panic+0x2e3/0x75c [ 80.917616][ T9612] ? add_taint.cold+0x16/0x16 [ 80.922316][ T9612] ? __probe_kernel_read+0x188/0x1d0 [ 80.927597][ T9612] ? __warn.cold+0x14/0x35 [ 80.932537][ T9612] ? __warn+0xd5/0x1c8 [ 80.936598][ T9612] ? debug_print_object+0x160/0x250 [ 80.941904][ T9612] __warn.cold+0x2f/0x35 [ 80.946220][ T9612] ? debug_print_object+0x160/0x250 [ 80.951418][ T9612] report_bug+0x27b/0x2f0 [ 80.955756][ T9612] do_error_trap+0x12b/0x220 [ 80.960341][ T9612] ? debug_print_object+0x160/0x250 [ 80.965529][ T9612] do_invalid_op+0x32/0x40 [ 80.969944][ T9612] ? debug_print_object+0x160/0x250 [ 80.975508][ T9612] invalid_op+0x23/0x30 [ 80.979662][ T9612] RIP: 0010:debug_print_object+0x160/0x250 [ 80.985909][ T9612] 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 98 c9 b1 fd <0f> 0b 83 05 eb 97 d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 81.011268][ T9612] RSP: 0018:ffffc900020c7178 EFLAGS: 00010282 [ 81.017333][ T9612] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 81.025806][ T9612] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000418e21 [ 81.034287][ T9612] RBP: 0000000000000001 R08: ffff888092416400 R09: ffffed1015cc6659 [ 81.042417][ T9612] R10: ffffed1015cc6658 R11: ffff8880ae6332c7 R12: ffffffff897acba0 [ 81.050661][ T9612] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000418e3c [ 81.058967][ T9612] ? vprintk_func+0x81/0x17e [ 81.063559][ T9612] ? debug_print_object+0x160/0x250 [ 81.068759][ T9612] ? lockdep_hardirqs_on+0x417/0x5d0 [ 81.074060][ T9612] debug_object_activate+0x346/0x470 [ 81.079341][ T9612] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 81.085170][ T9612] ? debug_object_init_on_stack+0x20/0x20 [ 81.090959][ T9612] ? find_held_lock+0x2d/0x110 [ 81.095714][ T9612] ? free_object+0x70/0x70 [ 81.100548][ T9612] ? lock_downgrade+0x7f0/0x7f0 [ 81.105768][ T9612] ? delayed_work_timer_fn+0x90/0x90 [ 81.111063][ T9612] call_rcu+0x2c/0x690 [ 81.115136][ T9612] queue_rcu_work+0x82/0xa0 [ 81.120173][ T9612] route4_change+0x19e8/0x2250 [ 81.125031][ T9612] ? route4_destroy+0x800/0x800 [ 81.129912][ T9612] ? wait_for_completion+0x3c0/0x3c0 [ 81.135363][ T9612] tc_new_tfilter+0xa59/0x20b0 [ 81.140131][ T9612] ? route4_destroy+0x800/0x800 [ 81.144975][ T9612] ? tc_del_tfilter+0x1430/0x1430 [ 81.149989][ T9612] ? __lock_acquire+0x80b/0x3ca0 [ 81.155058][ T9612] ? apparmor_capable+0x454/0x8a0 [ 81.161654][ T9612] ? rcu_read_lock_held+0x9c/0xb0 [ 81.166916][ T9612] ? tc_del_tfilter+0x1430/0x1430 [ 81.171943][ T9612] rtnetlink_rcv_msg+0x810/0xad0 [ 81.178318][ T9612] ? rtnl_bridge_getlink+0x880/0x880 [ 81.184075][ T9612] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 81.191004][ T9612] ? __copy_skb_header+0x280/0x5b0 [ 81.196548][ T9612] ? skb_splice_bits+0x1a0/0x1a0 [ 81.201746][ T9612] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 81.207624][ T9612] ? kmem_cache_alloc+0x261/0x730 [ 81.212675][ T9612] netlink_rcv_skb+0x15a/0x410 [ 81.217542][ T9612] ? rtnl_bridge_getlink+0x880/0x880 [ 81.223165][ T9612] ? netlink_ack+0xa80/0xa80 [ 81.227859][ T9612] netlink_unicast+0x537/0x740 [ 81.232616][ T9612] ? netlink_attachskb+0x810/0x810 [ 81.238477][ T9612] ? _copy_from_iter_full+0x25c/0x870 [ 81.244049][ T9612] ? __phys_addr_symbol+0x2c/0x70 [ 81.249085][ T9612] ? __check_object_size+0x171/0x437 [ 81.254373][ T9612] netlink_sendmsg+0x882/0xe10 [ 81.259536][ T9612] ? aa_af_perm+0x260/0x260 [ 81.264034][ T9612] ? netlink_unicast+0x740/0x740 [ 81.269258][ T9612] ? netlink_unicast+0x740/0x740 [ 81.274552][ T9612] sock_sendmsg+0xcf/0x120 [ 81.278979][ T9612] ____sys_sendmsg+0x6b9/0x7d0 [ 81.283735][ T9612] ? kernel_sendmsg+0x50/0x50 [ 81.288421][ T9612] ___sys_sendmsg+0x100/0x170 [ 81.293213][ T9612] ? sendmsg_copy_msghdr+0x70/0x70 [ 81.298614][ T9612] ? __fget_files+0x329/0x4f0 [ 81.303300][ T9612] ? ksys_dup3+0x3c0/0x3c0 [ 81.307707][ T9612] ? __fget_light+0x208/0x270 [ 81.312392][ T9612] __sys_sendmsg+0xec/0x1b0 [ 81.316897][ T9612] ? __sys_sendmsg_sock+0xb0/0xb0 [ 81.321944][ T9612] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 81.327928][ T9612] ? __x64_sys_futex+0x380/0x4f0 [ 81.332993][ T9612] ? trace_hardirqs_off_caller+0x55/0x230 [ 81.340315][ T9612] ? do_syscall_64+0x21/0x7d0 [ 81.345220][ T9612] do_syscall_64+0xf6/0x7d0 [ 81.349943][ T9612] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.357488][ T9612] RIP: 0033:0x449739 [ 81.361641][ T9612] 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 [ 81.381489][ T9612] RSP: 002b:00007f3771712d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.389896][ T9612] RAX: ffffffffffffffda RBX: 00000000006dec78 RCX: 0000000000449739 [ 81.397860][ T9612] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 81.405816][ T9612] RBP: 00000000006dec70 R08: 0000000000000000 R09: 0000000000000000 [ 81.413774][ T9612] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec7c [ 81.421738][ T9612] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 81.431396][ T9612] Kernel Offset: disabled [ 81.435727][ T9612] Rebooting in 86400 seconds..