[ 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 '10.128.0.10' (ECDSA) to the list of known hosts. 2020/08/29 08:25:28 parsed 1 programs 2020/08/29 08:25:29 executed programs: 0 syzkaller login: [ 147.497711] audit: type=1400 audit(1598689529.158:8): avc: denied { execmem } for pid=6457 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 148.590477] IPVS: ftp: loaded support on port[0] = 21 [ 148.690061] chnl_net:caif_netlink_parms(): no params data found [ 148.759845] bridge0: port 1(bridge_slave_0) entered blocking state [ 148.767174] bridge0: port 1(bridge_slave_0) entered disabled state [ 148.775392] device bridge_slave_0 entered promiscuous mode [ 148.783669] bridge0: port 2(bridge_slave_1) entered blocking state [ 148.790621] bridge0: port 2(bridge_slave_1) entered disabled state [ 148.798432] device bridge_slave_1 entered promiscuous mode [ 148.815532] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 148.824921] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 148.844336] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 148.851885] team0: Port device team_slave_0 added [ 148.857805] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 148.865132] team0: Port device team_slave_1 added [ 148.881022] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 148.887810] 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. [ 148.913540] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 148.925240] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 148.931661] 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. [ 148.958638] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 148.969321] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 148.976778] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 148.996803] device hsr_slave_0 entered promiscuous mode [ 149.002640] device hsr_slave_1 entered promiscuous mode [ 149.009618] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 149.016757] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 149.083391] bridge0: port 2(bridge_slave_1) entered blocking state [ 149.089859] bridge0: port 2(bridge_slave_1) entered forwarding state [ 149.096650] bridge0: port 1(bridge_slave_0) entered blocking state [ 149.103144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 149.137138] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 149.144464] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.154071] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.164376] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 149.173223] bridge0: port 1(bridge_slave_0) entered disabled state [ 149.180930] bridge0: port 2(bridge_slave_1) entered disabled state [ 149.188267] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 149.199192] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 149.205263] 8021q: adding VLAN 0 to HW filter on device team0 [ 149.215122] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 149.223416] bridge0: port 1(bridge_slave_0) entered blocking state [ 149.229906] bridge0: port 1(bridge_slave_0) entered forwarding state [ 149.248604] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 149.256223] bridge0: port 2(bridge_slave_1) entered blocking state [ 149.262891] bridge0: port 2(bridge_slave_1) entered forwarding state [ 149.271047] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 149.279801] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 149.287910] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 149.298302] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 149.309283] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 149.321834] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 149.327944] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 149.335094] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 149.349453] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 149.356749] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 149.364849] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 149.376041] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 149.391838] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 149.402061] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 149.435703] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 149.443300] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 149.450659] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 149.461403] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 149.469377] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 149.476327] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 149.485807] device veth0_vlan entered promiscuous mode [ 149.495401] device veth1_vlan entered promiscuous mode [ 149.501987] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 149.512303] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 149.524188] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 149.534069] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 149.541966] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 149.549976] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 149.560281] device veth0_macvtap entered promiscuous mode [ 149.566616] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 149.576222] device veth1_macvtap entered promiscuous mode [ 149.586285] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 149.596061] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 149.606881] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 149.614502] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 149.623151] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 149.633815] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 149.640841] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 150.618343] Bluetooth: hci0: command 0x0409 tx timeout 2020/08/29 08:25:34 executed programs: 210 [ 152.697520] Bluetooth: hci0: command 0x041b tx timeout [ 153.409812] kasan: CONFIG_KASAN_INLINE enabled [ 153.414929] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 153.423110] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 153.429377] CPU: 0 PID: 7618 Comm: syz-executor.0 Not tainted 4.19.142-syzkaller #0 [ 153.437171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.446521] RIP: 0010:tty_release+0xfb/0xf60 [ 153.450920] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3a 0d 00 00 48 8b 04 24 48 8b 98 90 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 0c 00 00 48 8b 04 24 4c 8b 23 48 8d 78 20 48 [ 153.469826] RSP: 0018:ffff8880926afdc0 EFLAGS: 00010246 [ 153.475172] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a58587 [ 153.482423] RDX: 0000000000000000 RSI: ffffffff83a5a212 RDI: 0000000000000004 [ 153.489675] RBP: ffff88809202b440 R08: 0000000000000000 R09: 0000000000000000 [ 153.496954] R10: 0000000000000004 R11: 0000000000000000 R12: ffff8880a43c0630 [ 153.504209] R13: ffff88809593a868 R14: ffffffff83a5a150 R15: ffff8880a39b4c20 [ 153.511463] FS: 0000000001b2c940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 153.519674] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 153.525537] CR2: 00007fb192f3ddb8 CR3: 00000000920d4000 CR4: 00000000001406f0 [ 153.532790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 153.540051] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 153.547536] Call Trace: [ 153.550134] ? ima_file_free+0xb6/0x460 [ 153.554215] ? do_tty_hangup+0x30/0x30 [ 153.558214] __fput+0x2ce/0x890 [ 153.561624] task_work_run+0x148/0x1c0 [ 153.565596] exit_to_usermode_loop+0x251/0x2a0 [ 153.570238] do_syscall_64+0x538/0x620 [ 153.574114] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 153.579286] RIP: 0033:0x416f01 [ 153.582480] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 153.601364] RSP: 002b:00007ffe04f6bfb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 153.609053] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416f01 [ 153.616306] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 0000000000000003 [ 153.623559] RBP: 0000000000000000 R08: 0000000001190370 R09: 0000000000000000 [ 153.630934] R10: 00007ffe04f6c090 R11: 0000000000000293 R12: 0000000001190378 [ 153.638205] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000000118cf4c [ 153.645478] Modules linked in: [ 153.649180] ---[ end trace 28776fd4d8b813ab ]--- [ 153.653945] RIP: 0010:tty_release+0xfb/0xf60 [ 153.658905] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3a 0d 00 00 48 8b 04 24 48 8b 98 90 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 d5 0c 00 00 48 8b 04 24 4c 8b 23 48 8d 78 20 48 [ 153.678320] RSP: 0018:ffff8880926afdc0 EFLAGS: 00010246 [ 153.683692] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83a58587 [ 153.691225] RDX: 0000000000000000 RSI: ffffffff83a5a212 RDI: 0000000000000004 [ 153.698543] RBP: ffff88809202b440 R08: 0000000000000000 R09: 0000000000000000 [ 153.705984] R10: 0000000000000004 R11: 0000000000000000 R12: ffff8880a43c0630 [ 153.713282] R13: ffff88809593a868 R14: ffffffff83a5a150 R15: ffff8880a39b4c20 [ 153.720686] FS: 0000000001b2c940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 153.728979] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 153.734942] CR2: 00007fb192f3ddb8 CR3: 00000000920d4000 CR4: 00000000001406f0 [ 153.742266] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 153.749595] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 153.757099] Kernel panic - not syncing: Fatal exception [ 153.764364] Kernel Offset: disabled [ 153.767986] Rebooting in 86400 seconds..