[ 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 '10.128.0.7' (ECDSA) to the list of known hosts. 2020/09/04 12:24:49 parsed 1 programs 2020/09/04 12:24:49 executed programs: 0 syzkaller login: [ 33.148631] audit: type=1400 audit(1599222289.336:8): avc: denied { execmem } for pid=6387 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 34.266194] IPVS: ftp: loaded support on port[0] = 21 [ 34.353571] chnl_net:caif_netlink_parms(): no params data found [ 34.422248] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.429339] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.437130] device bridge_slave_0 entered promiscuous mode [ 34.444726] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.451099] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.458493] device bridge_slave_1 entered promiscuous mode [ 34.475615] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.485178] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.502319] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.509630] team0: Port device team_slave_0 added [ 34.515564] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.522566] team0: Port device team_slave_1 added [ 34.536996] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.543230] 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. [ 34.568450] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.579737] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.586079] 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. [ 34.611307] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.622453] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 34.630171] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 34.648120] device hsr_slave_0 entered promiscuous mode [ 34.653789] device hsr_slave_1 entered promiscuous mode [ 34.659634] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 34.666779] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.725848] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.732261] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.739201] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.745617] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.774438] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.780530] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.790260] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.798808] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.817301] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.824672] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.834709] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.841185] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.849578] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.857560] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.864097] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.872958] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.880899] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.887559] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.901264] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.910178] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.920086] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.930196] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.940309] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.949635] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.956828] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.969100] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.976569] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.983841] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.994275] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 35.042236] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 35.052553] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 35.083684] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 35.090604] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 35.098068] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 35.107350] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 35.115012] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 35.122020] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 35.131100] device veth0_vlan entered promiscuous mode [ 35.140523] device veth1_vlan entered promiscuous mode [ 35.146684] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 35.156368] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 35.167755] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 35.176871] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 35.184317] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 35.191452] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 35.201003] device veth0_macvtap entered promiscuous mode [ 35.208979] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 35.217666] device veth1_macvtap entered promiscuous mode [ 35.226576] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 35.235723] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 35.245523] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 35.253642] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 35.261778] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 35.270782] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 35.277692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 35.343518] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.293183] Bluetooth: hci0 command 0x0409 tx timeout 2020/09/04 12:24:54 executed programs: 161 [ 38.370937] Bluetooth: hci0 command 0x041b tx timeout [ 40.449698] Bluetooth: hci0 command 0x040f tx timeout [ 42.528279] Bluetooth: hci0 command 0x0419 tx timeout 2020/09/04 12:24:59 executed programs: 452 [ 43.834052] kasan: CONFIG_KASAN_INLINE enabled [ 43.839028] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.846382] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.852618] Modules linked in: [ 43.855808] CPU: 0 PID: 8679 Comm: syz-executor.0 Not tainted 4.14.196-syzkaller #0 [ 43.863595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.872931] task: ffff8880a932e040 task.stack: ffff88808f740000 [ 43.878997] RIP: 0010:__sock_release+0xbb/0x2b0 [ 43.883645] RSP: 0018:ffff88808f747dc0 EFLAGS: 00010202 [ 43.889005] RAX: dffffc0000000000 RBX: ffff88807f1009c0 RCX: 0000000000007cf0 [ 43.896788] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000010 [ 43.904040] RBP: ffff88807f100ad0 R08: ffffffff8a0b8100 R09: 000000000004044e [ 43.911385] R10: ffff8880a932e8c8 R11: ffff8880a932e040 R12: 0000000000000000 [ 43.918634] R13: ffff88807f1009e8 R14: 0000000000000000 R15: ffff88808f723010 [ 43.926316] FS: 00007fd08ac46700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 43.934517] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.940376] CR2: 0000000000000000 CR3: 000000008cc42000 CR4: 00000000001406f0 [ 43.947647] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.954896] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.962145] Call Trace: [ 43.964725] ? __sock_release+0x2b0/0x2b0 [ 43.968856] sock_close+0x15/0x20 [ 43.972295] __fput+0x25f/0x7a0 [ 43.975559] task_work_run+0x11f/0x190 [ 43.979431] exit_to_usermode_loop+0x1ad/0x200 [ 43.984014] do_syscall_64+0x4a3/0x640 [ 43.987893] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 43.993080] RIP: 0033:0x45d5b9 [ 43.996251] RSP: 002b:00007fd08ac45c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 44.003945] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 44.011190] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 44.018489] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 44.025737] R10: 0000000020000080 R11: 0000000000000246 R12: 000000000118cf4c [ 44.033049] R13: 00007ffd0c2fccaf R14: 00007fd08ac469c0 R15: 000000000118cf4c [ 44.040325] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 d5 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 be 01 00 00 48 89 df 41 ff 54 24 10 48 8d 7b [ 44.059411] RIP: __sock_release+0xbb/0x2b0 RSP: ffff88808f747dc0 [ 44.066084] ---[ end trace 6f99c97559f67ba0 ]--- [ 44.070867] Kernel panic - not syncing: Fatal exception [ 44.077483] Kernel Offset: disabled [ 44.081098] Rebooting in 86400 seconds..