[ 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 '10.128.1.37' (ECDSA) to the list of known hosts. 2020/09/02 14:09:17 parsed 1 programs 2020/09/02 14:09:18 executed programs: 0 syzkaller login: [ 1041.430184] audit: type=1400 audit(1599055758.139:8): avc: denied { execmem } for pid=6386 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 1042.587555] IPVS: ftp: loaded support on port[0] = 21 [ 1042.675978] chnl_net:caif_netlink_parms(): no params data found [ 1042.767096] bridge0: port 1(bridge_slave_0) entered blocking state [ 1042.773784] bridge0: port 1(bridge_slave_0) entered disabled state [ 1042.781361] device bridge_slave_0 entered promiscuous mode [ 1042.788366] bridge0: port 2(bridge_slave_1) entered blocking state [ 1042.794879] bridge0: port 2(bridge_slave_1) entered disabled state [ 1042.802232] device bridge_slave_1 entered promiscuous mode [ 1042.818832] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 1042.827948] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 1042.846191] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 1042.853464] team0: Port device team_slave_0 added [ 1042.858904] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 1042.866339] team0: Port device team_slave_1 added [ 1042.880672] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1042.880689] 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. [ 1042.880693] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1042.882625] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1042.928522] 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. [ 1042.953804] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1042.964481] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 1042.972102] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 1042.991114] device hsr_slave_0 entered promiscuous mode [ 1042.996737] device hsr_slave_1 entered promiscuous mode [ 1043.003332] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 1043.010278] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 1043.073773] bridge0: port 2(bridge_slave_1) entered blocking state [ 1043.080236] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1043.087336] bridge0: port 1(bridge_slave_0) entered blocking state [ 1043.093843] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1043.123552] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 1043.129619] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1043.139061] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 1043.147431] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1043.166533] bridge0: port 1(bridge_slave_0) entered disabled state [ 1043.173940] bridge0: port 2(bridge_slave_1) entered disabled state [ 1043.183917] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 1043.190032] 8021q: adding VLAN 0 to HW filter on device team0 [ 1043.199419] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1043.207424] bridge0: port 1(bridge_slave_0) entered blocking state [ 1043.213921] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1043.224425] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1043.232239] bridge0: port 2(bridge_slave_1) entered blocking state [ 1043.238560] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1043.258214] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1043.268078] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1043.278757] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 1043.286129] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1043.294319] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1043.302150] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1043.309659] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1043.317799] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1043.324918] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1043.338074] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 1043.345865] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1043.353010] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1043.364774] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1043.415561] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 1043.425613] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1043.455322] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 1043.463199] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 1043.469644] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 1043.480933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1043.488469] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1043.495886] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1043.505092] device veth0_vlan entered promiscuous mode [ 1043.514222] device veth1_vlan entered promiscuous mode [ 1043.520030] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 1043.529227] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 1043.540046] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 1043.549405] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1043.556926] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1043.565670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1043.575376] device veth0_macvtap entered promiscuous mode [ 1043.581888] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 1043.589862] device veth1_macvtap entered promiscuous mode [ 1043.598575] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 1043.608219] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 1043.618047] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1043.625113] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1043.633476] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1043.643780] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1043.651410] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1043.658705] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1044.601291] Bluetooth: hci0 command 0x0409 tx timeout 2020/09/02 14:09:23 executed programs: 168 [ 1046.680707] Bluetooth: hci0 command 0x041b tx timeout [ 1048.760616] Bluetooth: hci0 command 0x040f tx timeout [ 1050.840611] Bluetooth: hci0 command 0x0419 tx timeout 2020/09/02 14:09:28 executed programs: 653 [ 1053.242601] NOHZ: local_softirq_pending 08 [ 1053.248591] NOHZ: local_softirq_pending 08 2020/09/02 14:09:33 executed programs: 1265 2020/09/02 14:09:38 executed programs: 1888 2020/09/02 14:09:43 executed programs: 2526 2020/09/02 14:09:48 executed programs: 3153 2020/09/02 14:09:53 executed programs: 3775 [ 1077.452864] list_del corruption, ffff88809f1a1d28->next is LIST_POISON1 (dead000000000100) [ 1077.462002] ------------[ cut here ]------------ [ 1077.466743] kernel BUG at lib/list_debug.c:45! [ 1077.471382] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 1077.476732] Modules linked in: [ 1077.479903] CPU: 0 PID: 18670 Comm: syz-executor.0 Not tainted 4.14.195-syzkaller #0 [ 1077.487757] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1077.497103] task: ffff88809bd282c0 task.stack: ffff88809ff28000 [ 1077.503263] RIP: 0010:__list_del_entry_valid.cold+0x23/0x55 [ 1077.508951] RSP: 0018:ffff88809ff2fd18 EFLAGS: 00010282 [ 1077.514303] RAX: 000000000000004e RBX: 1ffff11013fe5fb1 RCX: 0000000000000000 [ 1077.521807] RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1013fe5f99 [ 1077.529049] RBP: ffff88809f1a1d28 R08: 000000000000004e R09: 0000000000000000 [ 1077.536294] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 [ 1077.543547] R13: dead000000000100 R14: ffff88809f1a1d30 R15: ffff88809f1a1cd0 [ 1077.550817] FS: 00000000024e8940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 1077.559023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1077.564883] CR2: 00007f774d002db8 CR3: 000000008b373000 CR4: 00000000001406f0 [ 1077.572132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1077.579466] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1077.586729] Call Trace: [ 1077.589361] fuse_dev_free+0x57/0x1b0 [ 1077.593186] fuse_dev_release+0x22a/0x320 [ 1077.597344] ? ep_remove+0x2b6/0x450 [ 1077.601055] ? fuse_abort_conn+0xb60/0xb60 [ 1077.605267] ? fuse_conn_put+0xa/0xd0 [ 1077.609043] ? cuse_channel_release+0x234/0x300 [ 1077.613733] ? ima_file_free+0x4f/0x330 [ 1077.617715] ? cuse_class_waiting_show+0x90/0x90 [ 1077.622518] __fput+0x25f/0x7a0 [ 1077.625805] task_work_run+0x11f/0x190 [ 1077.629677] exit_to_usermode_loop+0x1ad/0x200 [ 1077.634243] do_syscall_64+0x4a3/0x640 [ 1077.638168] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1077.643348] RIP: 0033:0x416f01 [ 1077.646513] RSP: 002b:00007ffdb9aa7190 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 1077.654196] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416f01 [ 1077.661447] RDX: 0000000000000001 RSI: 00000000011903d8 RDI: 0000000000000003 [ 1077.668701] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1077.675953] R10: 00007ffdb9aa7280 R11: 0000000000000293 R12: 00000000011903d8 [ 1077.683207] R13: 0000000000107121 R14: ffffffffffffffff R15: 000000000118cfec [ 1077.690466] Code: e6 e8 c8 9d 44 fe 0f 0b 48 89 ee 48 c7 c7 60 64 e4 86 e8 b7 9d 44 fe 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 63 e4 86 e8 a3 9d 44 fe <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 00 64 e4 86 e8 8f 9d 44 fe 0f [ 1077.709546] RIP: __list_del_entry_valid.cold+0x23/0x55 RSP: ffff88809ff2fd18 [ 1077.716962] ---[ end trace 356873dd61f3dd40 ]--- [ 1077.721789] Kernel panic - not syncing: Fatal exception [ 1077.728296] Kernel Offset: disabled [ 1077.732172] Rebooting in 86400 seconds..