[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. 2020/08/27 09:13:44 parsed 1 programs 2020/08/27 09:13:44 executed programs: 0 syzkaller login: [ 62.545731][ T6847] IPVS: ftp: loaded support on port[0] = 21 [ 62.718242][ T6847] chnl_net:caif_netlink_parms(): no params data found [ 62.770649][ T6847] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.778366][ T6847] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.786698][ T6847] device bridge_slave_0 entered promiscuous mode [ 62.795380][ T6847] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.803666][ T6847] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.812054][ T6847] device bridge_slave_1 entered promiscuous mode [ 62.830909][ T6847] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.842413][ T6847] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.864537][ T6847] team0: Port device team_slave_0 added [ 62.872380][ T6847] team0: Port device team_slave_1 added [ 62.889504][ T6847] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 62.896520][ T6847] 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. [ 62.923102][ T6847] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 62.935738][ T6847] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 62.943185][ T6847] 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. [ 62.969554][ T6847] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 62.996544][ T6847] device hsr_slave_0 entered promiscuous mode [ 63.003239][ T6847] device hsr_slave_1 entered promiscuous mode [ 63.094090][ T6847] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.109711][ T6847] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.118337][ T6847] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.130824][ T6847] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.155955][ T6847] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.163086][ T6847] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.170635][ T6847] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.177747][ T6847] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.222242][ T6847] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.235888][ T3083] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.245929][ T3083] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.254373][ T3083] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.263007][ T3083] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.275776][ T6847] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.286890][ T2581] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.296418][ T2581] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.303515][ T2581] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.321760][ T3083] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.330139][ T3083] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.337235][ T3083] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.357511][ T6847] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 63.368057][ T6847] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.383136][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.393248][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.401823][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.410177][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.420127][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.428003][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.449545][ T6847] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.456767][ T2581] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.465569][ T2581] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.492788][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 63.508210][ T6847] device veth0_vlan entered promiscuous mode [ 63.515194][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 63.525071][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.533171][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.546220][ T6847] device veth1_vlan entered promiscuous mode [ 63.567528][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.575538][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.584793][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.596177][ T6847] device veth0_macvtap entered promiscuous mode [ 63.605877][ T6847] device veth1_macvtap entered promiscuous mode [ 63.623764][ T6847] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.631676][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.640505][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.653057][ T6847] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 63.660411][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 63.673112][ T6847] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.682426][ T6847] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.692798][ T6847] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.701997][ T6847] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.792071][ T7069] ------------[ cut here ]------------ [ 63.797565][ T7069] ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0 [ 63.806215][ T7069] WARNING: CPU: 1 PID: 7069 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 63.815668][ T7069] Kernel panic - not syncing: panic_on_warn set ... [ 63.822375][ T7069] CPU: 1 PID: 7069 Comm: syz-executor.0 Not tainted 5.9.0-rc2-syzkaller #0 [ 63.830952][ T7069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.840997][ T7069] Call Trace: [ 63.844292][ T7069] dump_stack+0x18f/0x20d [ 63.848615][ T7069] panic+0x2e3/0x75c [ 63.852491][ T7069] ? __warn_printk+0xf3/0xf3 [ 63.857062][ T7069] ? console_unlock+0x7f0/0xf30 [ 63.861889][ T7069] ? __warn.cold+0x5/0x4a [ 63.866240][ T7069] ? __warn+0xd6/0x1f2 [ 63.870288][ T7069] ? debug_print_object+0x160/0x250 [ 63.875481][ T7069] __warn.cold+0x20/0x4a [ 63.879697][ T7069] ? wake_up_klogd.part.0+0x8c/0xc0 [ 63.884871][ T7069] ? debug_print_object+0x160/0x250 [ 63.890044][ T7069] report_bug+0x1bd/0x210 [ 63.894358][ T7069] handle_bug+0x38/0x90 [ 63.898489][ T7069] exc_invalid_op+0x14/0x40 [ 63.902973][ T7069] asm_exc_invalid_op+0x12/0x20 [ 63.907799][ T7069] RIP: 0010:debug_print_object+0x160/0x250 [ 63.913593][ T7069] Code: dd e0 26 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd e0 26 94 88 48 c7 c7 40 1c 94 88 e8 d2 36 a6 fd <0f> 0b 83 05 93 4f 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 63.933176][ T7069] RSP: 0018:ffffc90006437ba8 EFLAGS: 00010086 [ 63.939217][ T7069] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 63.947174][ T7069] RDX: ffff8880a7486440 RSI: ffffffff815dafc7 RDI: fffff52000c86f67 [ 63.955131][ T7069] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720f8b [ 63.963082][ T7069] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bd6780 [ 63.971152][ T7069] R13: 0000000000000000 R14: dead000000000100 R15: dffffc0000000000 [ 63.979135][ T7069] ? vprintk_func+0x97/0x1a6 [ 63.983708][ T7069] ? debug_print_object+0x160/0x250 [ 63.988881][ T7069] debug_check_no_obj_freed+0x301/0x41c [ 63.994406][ T7069] kmem_cache_free.part.0+0x16d/0x1f0 [ 63.999800][ T7069] task_work_run+0xdd/0x190 [ 64.004292][ T7069] get_signal+0xd89/0x1f00 [ 64.008700][ T7069] arch_do_signal+0x82/0x2520 [ 64.013359][ T7069] ? lock_downgrade+0x830/0x830 [ 64.018227][ T7069] ? __ia32_sys_epoll_create+0x1e0/0x1e0 [ 64.023893][ T7069] ? copy_siginfo_to_user32+0xa0/0xa0 [ 64.029241][ T7069] ? ep_unregister_pollwait.constprop.0+0x3c0/0x3c0 [ 64.035807][ T7069] ? __might_fault+0x190/0x1d0 [ 64.040548][ T7069] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 64.046280][ T7069] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 64.052274][ T7069] exit_to_user_mode_prepare+0x15d/0x1c0 [ 64.057882][ T7069] syscall_exit_to_user_mode+0x59/0x2b0 [ 64.063440][ T7069] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.069304][ T7069] RIP: 0033:0x45d5b9 [ 64.073187][ T7069] Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 64.092768][ T7069] RSP: 002b:00007f06e477dc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 64.101151][ T7069] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 64.109096][ T7069] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 64.117042][ T7069] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 64.124989][ T7069] R10: 0000000020000000 R11: 0000000000000246 R12: 000000000118cf4c [ 64.132940][ T7069] R13: 00007fffc5ecdd0f R14: 00007f06e477e9c0 R15: 000000000118cf4c [ 64.142359][ T7069] Kernel Offset: disabled [ 64.146735][ T7069] Rebooting in 86400 seconds..