[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.646810][ T27] audit: type=1800 audit(1584515144.081:25): pid=9446 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.676817][ T27] audit: type=1800 audit(1584515144.091:26): pid=9446 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.721786][ T27] audit: type=1800 audit(1584515144.091:27): pid=9446 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 '10.128.1.56' (ECDSA) to the list of known hosts. 2020/03/18 07:05:54 parsed 1 programs 2020/03/18 07:05:56 executed programs: 0 syzkaller login: [ 92.372447][ T9615] IPVS: ftp: loaded support on port[0] = 21 [ 92.442390][ T9615] chnl_net:caif_netlink_parms(): no params data found [ 92.498692][ T9615] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.506399][ T9615] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.515233][ T9615] device bridge_slave_0 entered promiscuous mode [ 92.524636][ T9615] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.532079][ T9615] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.540237][ T9615] device bridge_slave_1 entered promiscuous mode [ 92.559448][ T9615] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.570711][ T9615] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.592985][ T9615] team0: Port device team_slave_0 added [ 92.601409][ T9615] team0: Port device team_slave_1 added [ 92.617617][ T9615] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 92.624682][ T9615] 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. [ 92.651222][ T9615] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 92.663792][ T9615] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 92.671500][ T9615] 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. [ 92.698462][ T9615] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 92.759697][ T9615] device hsr_slave_0 entered promiscuous mode [ 92.797156][ T9615] device hsr_slave_1 entered promiscuous mode [ 92.927197][ T9615] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 92.990120][ T9615] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.049669][ T9615] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.089686][ T9615] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.173245][ T9615] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.180583][ T9615] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.188482][ T9615] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.195534][ T9615] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.244001][ T9615] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.258848][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.269268][ T2726] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.277591][ T2726] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.286054][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 93.300136][ T9615] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.311456][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 93.320301][ T2726] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.327474][ T2726] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.339219][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 93.348506][ T2725] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.355716][ T2725] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.378850][ T2700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 93.387744][ T2700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 93.397472][ T2700] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 93.408664][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 93.421763][ T9615] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 93.433647][ T9615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 93.442255][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 93.462807][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 93.470569][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 93.483857][ T9615] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 93.504573][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 93.514039][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 93.535233][ T9615] device veth0_vlan entered promiscuous mode [ 93.542261][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 93.552708][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 93.562195][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 93.570267][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 93.582871][ T9615] device veth1_vlan entered promiscuous mode [ 93.608260][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 93.616401][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 93.625017][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 93.633696][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 93.644914][ T9615] device veth0_macvtap entered promiscuous mode [ 93.655215][ T9615] device veth1_macvtap entered promiscuous mode [ 93.673041][ T9615] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 93.680708][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 93.689432][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 93.698398][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 93.707466][ T2718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 93.721217][ T9615] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 93.728977][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 93.738682][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 94.016136][ T9622] ------------[ cut here ]------------ [ 94.022404][ T9622] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 94.032931][ T9622] WARNING: CPU: 1 PID: 9622 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 94.042880][ T9622] Kernel panic - not syncing: panic_on_warn set ... [ 94.049481][ T9622] CPU: 1 PID: 9622 Comm: syz-executor.0 Not tainted 5.6.0-rc6-syzkaller #0 [ 94.058050][ T9622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.068093][ T9622] Call Trace: [ 94.071406][ T9622] dump_stack+0x188/0x20d [ 94.077461][ T9622] ? debug_print_object+0x120/0x250 [ 94.082652][ T9622] panic+0x2e3/0x75c [ 94.086538][ T9622] ? add_taint.cold+0x16/0x16 [ 94.091243][ T9622] ? __probe_kernel_read+0x188/0x1d0 [ 94.096521][ T9622] ? __warn.cold+0x14/0x35 [ 94.100922][ T9622] ? __warn+0xd5/0x1c8 [ 94.105064][ T9622] ? debug_print_object+0x160/0x250 [ 94.110262][ T9622] __warn.cold+0x2f/0x35 [ 94.114496][ T9622] ? debug_print_object+0x160/0x250 [ 94.119680][ T9622] report_bug+0x27b/0x2f0 [ 94.124103][ T9622] do_error_trap+0x12b/0x220 [ 94.128696][ T9622] ? debug_print_object+0x160/0x250 [ 94.133894][ T9622] do_invalid_op+0x32/0x40 [ 94.138298][ T9622] ? debug_print_object+0x160/0x250 [ 94.143506][ T9622] invalid_op+0x23/0x30 [ 94.147798][ T9622] RIP: 0010:debug_print_object+0x160/0x250 [ 94.153721][ T9622] 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 d8 cc b1 fd <0f> 0b 83 05 ab 9a d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 94.173329][ T9622] RSP: 0018:ffffc90001fe7178 EFLAGS: 00010282 [ 94.179425][ T9622] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 94.187393][ T9622] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff520003fce21 [ 94.195732][ T9622] RBP: 0000000000000001 R08: ffff88808ad06040 R09: ffffed1015ce6659 [ 94.203796][ T9622] R10: ffffed1015ce6658 R11: ffff8880ae7332c7 R12: ffffffff897acba0 [ 94.211793][ T9622] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920003fce3c [ 94.219885][ T9622] ? vprintk_func+0x81/0x17e [ 94.224475][ T9622] ? debug_print_object+0x160/0x250 [ 94.229679][ T9622] ? lockdep_hardirqs_on+0x417/0x5d0 [ 94.234965][ T9622] debug_object_activate+0x346/0x470 [ 94.240234][ T9622] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 94.246046][ T9622] ? debug_object_init_on_stack+0x20/0x20 [ 94.251746][ T9622] ? find_held_lock+0x2d/0x110 [ 94.256496][ T9622] ? free_object+0x70/0x70 [ 94.260901][ T9622] ? lock_downgrade+0x7f0/0x7f0 [ 94.265778][ T9622] ? delayed_work_timer_fn+0x90/0x90 [ 94.271053][ T9622] call_rcu+0x2c/0x690 [ 94.275127][ T9622] queue_rcu_work+0x82/0xa0 [ 94.279792][ T9622] route4_change+0x19e8/0x2250 [ 94.284553][ T9622] ? route4_destroy+0x800/0x800 [ 94.289404][ T9622] ? wait_for_completion+0x3c0/0x3c0 [ 94.294679][ T9622] tc_new_tfilter+0xa59/0x20b0 [ 94.299460][ T9622] ? route4_destroy+0x800/0x800 [ 94.304307][ T9622] ? tc_del_tfilter+0x1430/0x1430 [ 94.309380][ T9622] ? __lock_acquire+0x80b/0x3ca0 [ 94.314337][ T9622] ? apparmor_capable+0x454/0x8a0 [ 94.319795][ T9622] ? rcu_read_lock_held+0x9c/0xb0 [ 94.324821][ T9622] ? tc_del_tfilter+0x1430/0x1430 [ 94.329853][ T9622] rtnetlink_rcv_msg+0x810/0xad0 [ 94.334799][ T9622] ? rtnl_bridge_getlink+0x880/0x880 [ 94.340070][ T9622] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 94.345437][ T9622] ? __copy_skb_header+0x1e0/0x5b0 [ 94.350532][ T9622] ? skb_splice_bits+0x1a0/0x1a0 [ 94.355462][ T9622] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 94.361272][ T9622] ? kmem_cache_alloc+0x261/0x730 [ 94.366395][ T9622] netlink_rcv_skb+0x15a/0x410 [ 94.371153][ T9622] ? rtnl_bridge_getlink+0x880/0x880 [ 94.376425][ T9622] ? netlink_ack+0xa80/0xa80 [ 94.381013][ T9622] netlink_unicast+0x537/0x740 [ 94.385771][ T9622] ? netlink_attachskb+0x810/0x810 [ 94.390868][ T9622] ? _copy_from_iter_full+0x25c/0x870 [ 94.396249][ T9622] ? __phys_addr_symbol+0x2c/0x70 [ 94.401301][ T9622] ? __check_object_size+0x171/0x437 [ 94.406592][ T9622] netlink_sendmsg+0x882/0xe10 [ 94.411362][ T9622] ? aa_af_perm+0x260/0x260 [ 94.415850][ T9622] ? netlink_unicast+0x740/0x740 [ 94.420776][ T9622] ? netlink_unicast+0x740/0x740 [ 94.425696][ T9622] sock_sendmsg+0xcf/0x120 [ 94.430099][ T9622] ____sys_sendmsg+0x6b9/0x7d0 [ 94.434849][ T9622] ? kernel_sendmsg+0x50/0x50 [ 94.439520][ T9622] ? mark_lock+0xbc/0x1220 [ 94.443940][ T9622] ___sys_sendmsg+0x100/0x170 [ 94.448715][ T9622] ? sendmsg_copy_msghdr+0x70/0x70 [ 94.453823][ T9622] ? __fget_files+0x329/0x4f0 [ 94.458490][ T9622] ? ksys_dup3+0x3c0/0x3c0 [ 94.463360][ T9622] ? lock_acquire+0x197/0x420 [ 94.468023][ T9622] ? __might_fault+0xef/0x1d0 [ 94.472883][ T9622] ? __fget_light+0x208/0x270 [ 94.477887][ T9622] __sys_sendmsg+0xec/0x1b0 [ 94.482420][ T9622] ? __sys_sendmsg_sock+0xb0/0xb0 [ 94.487437][ T9622] ? __x64_sys_futex+0x380/0x4f0 [ 94.492391][ T9622] ? trace_hardirqs_off_caller+0x55/0x230 [ 94.498099][ T9622] ? do_syscall_64+0x21/0x7d0 [ 94.502764][ T9622] do_syscall_64+0xf6/0x7d0 [ 94.507259][ T9622] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.514299][ T9622] RIP: 0033:0x45c849 [ 94.518181][ T9622] 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 [ 94.537872][ T9622] RSP: 002b:00007f5d81106c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 94.546370][ T9622] RAX: ffffffffffffffda RBX: 00007f5d811076d4 RCX: 000000000045c849 [ 94.554530][ T9622] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000007 [ 94.562612][ T9622] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 94.570571][ T9622] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 94.578524][ T9622] R13: 00000000000009f9 R14: 00000000004ccb11 R15: 000000000076bf0c [ 94.588196][ T9622] Kernel Offset: disabled [ 94.592534][ T9622] Rebooting in 86400 seconds..