[ OK ] Started OpenBSD Secure Shell server. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.179' (ECDSA) to the list of known hosts. 2020/06/01 15:52:42 parsed 1 programs 2020/06/01 15:52:43 executed programs: 0 syzkaller login: [ 42.556775][ T7056] IPVS: ftp: loaded support on port[0] = 21 [ 42.636115][ T7056] chnl_net:caif_netlink_parms(): no params data found [ 42.678746][ T7056] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.686837][ T7056] bridge0: port 1(bridge_slave_0) entered disabled state [ 42.695539][ T7056] device bridge_slave_0 entered promiscuous mode [ 42.704445][ T7056] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.712268][ T7056] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.719881][ T7056] device bridge_slave_1 entered promiscuous mode [ 42.737734][ T7056] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 42.748975][ T7056] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 42.769674][ T7056] team0: Port device team_slave_0 added [ 42.776903][ T7056] team0: Port device team_slave_1 added [ 42.792319][ T7056] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 42.799407][ T7056] 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. [ 42.826722][ T7056] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 42.839456][ T7056] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 42.847015][ T7056] 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. [ 42.873674][ T7056] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 42.942843][ T7056] device hsr_slave_0 entered promiscuous mode [ 42.980317][ T7056] device hsr_slave_1 entered promiscuous mode [ 43.102799][ T7056] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 43.153239][ T7056] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 43.222383][ T7056] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 43.262404][ T7056] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 43.313440][ T7056] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.321506][ T7056] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.329243][ T7056] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.336404][ T7056] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.374786][ T7056] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.387161][ T4146] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.397592][ T4146] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.406988][ T4146] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.415749][ T4146] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 43.428241][ T7056] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.454202][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.463353][ T2799] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.470467][ T2799] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.479871][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.488180][ T2799] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.495281][ T2799] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.513208][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.522161][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.531715][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.544851][ T7056] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 43.556630][ T7056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.565309][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.573681][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.591432][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 43.599007][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 43.613569][ T7056] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.632017][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 43.648891][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 43.658849][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 43.668992][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 43.677916][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 43.687573][ T7056] device veth0_vlan entered promiscuous mode [ 43.699535][ T7056] device veth1_vlan entered promiscuous mode [ 43.718299][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 43.726970][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 43.735126][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 43.743879][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 43.754428][ T7056] device veth0_macvtap entered promiscuous mode [ 43.765136][ T7056] device veth1_macvtap entered promiscuous mode [ 43.781069][ T7056] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 43.788483][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 43.798553][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 43.806865][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 43.816032][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 43.828886][ T7056] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 43.837528][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 43.847460][ T2799] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2020/06/01 15:52:45 result: hanged=false err=executor 0: exit status 67 failed to mkdir (errno 30) loop exited with status 67 failed to mkdir (errno 30) loop exited with status 67 [ 44.751433][ T7271] ------------[ cut here ]------------ [ 44.757013][ T7271] WARNING: CPU: 0 PID: 7271 at kernel/cgroup/cgroup.c:3111 cgroup_finalize_control+0xb6c/0xd60 [ 44.767329][ T7271] Kernel panic - not syncing: panic_on_warn set ... [ 44.773920][ T7271] CPU: 0 PID: 7271 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 44.782141][ T7271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.792268][ T7271] Call Trace: [ 44.795536][ T7271] dump_stack+0x1e9/0x30e [ 44.799853][ T7271] panic+0x264/0x7a0 [ 44.803747][ T7271] ? __warn+0x102/0x210 [ 44.807883][ T7271] ? cgroup_finalize_control+0xb6c/0xd60 [ 44.813505][ T7271] __warn+0x209/0x210 [ 44.817474][ T7271] ? cgroup_finalize_control+0xb6c/0xd60 [ 44.823081][ T7271] report_bug+0x1ac/0x2d0 [ 44.827385][ T7271] do_error_trap+0xca/0x1c0 [ 44.831958][ T7271] do_invalid_op+0x32/0x40 [ 44.836488][ T7271] ? cgroup_finalize_control+0xb6c/0xd60 [ 44.842119][ T7271] invalid_op+0x23/0x30 [ 44.846257][ T7271] RIP: 0010:cgroup_finalize_control+0xb6c/0xd60 [ 44.852499][ T7271] Code: 89 f7 ff d3 eb 08 e8 83 fd 07 00 0f 1f 00 49 ff c4 49 83 fc 0d 0f 84 63 01 00 00 e8 6e fd 07 00 e9 a9 f8 ff ff e8 64 fd 07 00 <0f> 0b e9 88 f9 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c cd f8 ff [ 44.872182][ T7271] RSP: 0018:ffffc90002dbfba8 EFLAGS: 00010293 [ 44.878225][ T7271] RAX: ffffffff816b87ec RBX: 0000000000000002 RCX: ffff8880a2fdc2c0 [ 44.886190][ T7271] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 44.894296][ T7271] RBP: ffffffff89307278 R08: ffffffff816b816c R09: ffffed1015d07074 [ 44.902249][ T7271] R10: ffffed1015d07074 R11: 0000000000000000 R12: 0000000000000008 [ 44.910217][ T7271] R13: ffff8880a24b2000 R14: ffff8880a182f000 R15: dffffc0000000000 [ 44.918260][ T7271] ? cgroup_finalize_control+0x4ec/0xd60 [ 44.923880][ T7271] ? cgroup_finalize_control+0xb6c/0xd60 [ 44.929493][ T7271] ? cgroup_finalize_control+0xb6c/0xd60 [ 44.935117][ T7271] rebind_subsystems+0x737/0xe60 [ 44.940048][ T7271] cgroup_setup_root+0x679/0xd50 [ 44.944974][ T7271] cgroup1_get_tree+0x7a2/0xae0 [ 44.949818][ T7271] vfs_get_tree+0x88/0x270 [ 44.954226][ T7271] do_mount+0x17ec/0x2900 [ 44.958550][ T7271] ? _copy_from_user+0x116/0x170 [ 44.963569][ T7271] __se_sys_mount+0xd3/0x100 [ 44.968180][ T7271] do_syscall_64+0xf3/0x1b0 [ 44.972687][ T7271] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 44.978572][ T7271] RIP: 0033:0x45f4ba [ 44.982532][ T7271] Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 45.002347][ T7271] RSP: 002b:00007ffcfec6fd98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 45.010890][ T7271] RAX: ffffffffffffffda RBX: 00007ffcfec6fdf0 RCX: 000000000045f4ba [ 45.018874][ T7271] RDX: 00000000004cafd1 RSI: 00000000004c16a5 RDI: 00000000004c1668 [ 45.026822][ T7271] RBP: 0000000000000000 R08: 00000000004cfa40 R09: 000000000000001c [ 45.036171][ T7271] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004185d0 [ 45.044136][ T7271] R13: 00007ffcfec70018 R14: 0000000000000000 R15: 0000000000000000 [ 45.053721][ T7271] Kernel Offset: disabled [ 45.058106][ T7271] Rebooting in 86400 seconds..