[ OK ] Reached target Login Prompts. [ 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 '10.128.0.244' (ECDSA) to the list of known hosts. 2020/09/09 09:15:35 parsed 1 programs 2020/09/09 09:15:35 executed programs: 0 syzkaller login: [ 34.096354] audit: type=1400 audit(1599642935.234:8): avc: denied { execmem } for pid=6363 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 35.227135] IPVS: ftp: loaded support on port[0] = 21 [ 35.330080] chnl_net:caif_netlink_parms(): no params data found [ 35.431868] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.438925] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.446328] device bridge_slave_0 entered promiscuous mode [ 35.453161] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.460154] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.467446] device bridge_slave_1 entered promiscuous mode [ 35.483664] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.492431] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.510287] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.518229] team0: Port device team_slave_0 added [ 35.523672] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.531146] team0: Port device team_slave_1 added [ 35.546336] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.552588] 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. [ 35.578430] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.589966] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.596350] 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. [ 35.621685] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.632603] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 35.640290] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 35.659009] device hsr_slave_0 entered promiscuous mode [ 35.664709] device hsr_slave_1 entered promiscuous mode [ 35.670856] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 35.678108] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 35.742007] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.748485] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.755438] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.761794] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.790126] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 35.796981] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.805578] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 35.813631] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.833254] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.840736] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.851833] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 35.858392] 8021q: adding VLAN 0 to HW filter on device team0 [ 35.867304] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.875252] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.881606] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.901856] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 35.911855] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 35.923542] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 35.930968] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 35.939326] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.945708] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.953077] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 35.961574] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 35.969242] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 35.976897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 35.984576] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 35.991380] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.004893] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 36.012016] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.019471] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.030393] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 36.082456] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 36.092319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.123196] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 36.130213] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 36.137735] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 36.147594] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.155330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.162174] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.171180] device veth0_vlan entered promiscuous mode [ 36.179797] device veth1_vlan entered promiscuous mode [ 36.185996] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 36.194405] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 36.206054] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 36.215859] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 36.222964] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 36.230632] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.239571] device veth0_macvtap entered promiscuous mode [ 36.246394] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 36.255093] device veth1_macvtap entered promiscuous mode [ 36.263342] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 36.274029] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.283168] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.290855] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.299472] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 36.307462] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.316957] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 36.324106] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 36.330644] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 36.338453] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 37.264145] Bluetooth: hci0 command 0x0409 tx timeout 2020/09/09 09:15:40 executed programs: 145 [ 39.332618] Bluetooth: hci0 command 0x041b tx timeout [ 40.021408] kasan: CONFIG_KASAN_INLINE enabled [ 40.026305] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.035958] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 40.042278] Modules linked in: [ 40.045492] CPU: 0 PID: 7420 Comm: syz-executor.0 Not tainted 4.14.196-syzkaller #0 [ 40.053261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.062683] task: ffff88809713a400 task.stack: ffff888096c98000 [ 40.068725] RIP: 0010:__sock_release+0xbb/0x2b0 [ 40.073385] RSP: 0018:ffff888096c9fdc0 EFLAGS: 00010202 [ 40.078766] RAX: dffffc0000000000 RBX: ffff888082677940 RCX: 000000000000754e [ 40.086119] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000010 [ 40.093365] RBP: ffff888082677a50 R08: ffffffff8a0b43f0 R09: 000000000004044f [ 40.100614] R10: ffff88809713ac88 R11: ffff88809713a400 R12: 0000000000000000 [ 40.107995] R13: ffff888082677968 R14: 0000000000000000 R15: ffff8880a087c2d0 [ 40.115256] FS: 0000000001920940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 40.123457] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.129326] CR2: 00007fdeafe74f60 CR3: 000000008442f000 CR4: 00000000001406f0 [ 40.136582] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.143839] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.151083] Call Trace: [ 40.153657] ? __sock_release+0x2b0/0x2b0 [ 40.157784] sock_close+0x15/0x20 [ 40.161225] __fput+0x25f/0x7a0 [ 40.164489] task_work_run+0x11f/0x190 [ 40.168380] exit_to_usermode_loop+0x1ad/0x200 [ 40.172944] do_syscall_64+0x4a3/0x640 [ 40.176832] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 40.181999] RIP: 0033:0x416f01 [ 40.185166] RSP: 002b:00007ffe8450ec20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 40.192867] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416f01 [ 40.200124] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 0000000000000003 [ 40.207390] RBP: 0000000000000000 R08: 0000000001190598 R09: 0000000000000000 [ 40.214650] R10: 00007ffe8450ed00 R11: 0000000000000293 R12: 00000000011905a0 [ 40.221912] R13: 0000000000000000 R14: ffffffffffffffff R15: 000000000118cf4c [ 40.229168] 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 [ 40.248253] RIP: __sock_release+0xbb/0x2b0 RSP: ffff888096c9fdc0 [ 40.261515] ---[ end trace 4163f9830289a0dc ]--- [ 40.266294] Kernel panic - not syncing: Fatal exception [ 40.272701] Kernel Offset: disabled [ 40.276319] Rebooting in 86400 seconds..