[ 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 '10.128.0.118' (ECDSA) to the list of known hosts. 2020/08/29 12:15:12 parsed 1 programs 2020/08/29 12:15:13 executed programs: 0 syzkaller login: [ 1042.098275] audit: type=1400 audit(1598703313.098:8): avc: denied { execmem } for pid=6370 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 1043.212680] IPVS: ftp: loaded support on port[0] = 21 [ 1043.312038] chnl_net:caif_netlink_parms(): no params data found [ 1043.408557] bridge0: port 1(bridge_slave_0) entered blocking state [ 1043.415587] bridge0: port 1(bridge_slave_0) entered disabled state [ 1043.423895] device bridge_slave_0 entered promiscuous mode [ 1043.431881] bridge0: port 2(bridge_slave_1) entered blocking state [ 1043.438711] bridge0: port 2(bridge_slave_1) entered disabled state [ 1043.445807] device bridge_slave_1 entered promiscuous mode [ 1043.462029] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 1043.471205] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 1043.489699] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 1043.498471] team0: Port device team_slave_0 added [ 1043.504153] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 1043.511918] team0: Port device team_slave_1 added [ 1043.527436] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1043.533931] 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. [ 1043.561068] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1043.572569] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1043.578978] 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. [ 1043.604466] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1043.615626] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 1043.623169] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 1043.641055] device hsr_slave_0 entered promiscuous mode [ 1043.646917] device hsr_slave_1 entered promiscuous mode [ 1043.652797] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 1043.660165] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 1043.720389] bridge0: port 2(bridge_slave_1) entered blocking state [ 1043.727485] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1043.734425] bridge0: port 1(bridge_slave_0) entered blocking state [ 1043.741090] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1043.771794] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 1043.779567] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1043.788603] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 1043.797886] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1043.817299] bridge0: port 1(bridge_slave_0) entered disabled state [ 1043.824804] bridge0: port 2(bridge_slave_1) entered disabled state [ 1043.835747] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 1043.843133] 8021q: adding VLAN 0 to HW filter on device team0 [ 1043.851874] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1043.860315] bridge0: port 1(bridge_slave_0) entered blocking state [ 1043.866796] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1043.887347] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1043.895095] bridge0: port 2(bridge_slave_1) entered blocking state [ 1043.901974] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1043.909976] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1043.917857] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1043.925480] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1043.933168] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1043.940803] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1043.950524] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 1043.956799] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1043.969428] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 1043.977167] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1043.983937] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1043.994873] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1044.044293] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 1044.053697] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1044.081026] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 1044.089630] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 1044.097521] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 1044.107601] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1044.115495] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1044.123135] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1044.132382] device veth0_vlan entered promiscuous mode [ 1044.141672] device veth1_vlan entered promiscuous mode [ 1044.148297] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 1044.156998] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 1044.167947] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 1044.177971] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1044.185443] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1044.193409] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1044.202758] device veth0_macvtap entered promiscuous mode [ 1044.209009] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 1044.218114] device veth1_macvtap entered promiscuous mode [ 1044.227219] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 1044.237139] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 1044.247114] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1044.254404] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1044.262746] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1044.273451] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1044.280772] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1044.289439] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1045.246716] Bluetooth: hci0 command 0x0409 tx timeout 2020/08/29 12:15:18 executed programs: 180 [ 1047.325824] Bluetooth: hci0 command 0x041b tx timeout [ 1049.405379] Bluetooth: hci0 command 0x040f tx timeout [ 1051.485128] Bluetooth: hci0 command 0x0419 tx timeout 2020/08/29 12:15:23 executed programs: 525 2020/08/29 12:15:28 executed programs: 859 2020/08/29 12:15:33 executed programs: 1215 [ 1064.727041] kasan: CONFIG_KASAN_INLINE enabled [ 1064.731908] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 1064.741945] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 1064.748183] Modules linked in: [ 1064.751353] CPU: 0 PID: 12181 Comm: syz-executor.0 Not tainted 4.14.195-syzkaller #0 [ 1064.759207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1064.768536] task: ffff8880831f0100 task.stack: ffff8880930d0000 [ 1064.774640] RIP: 0010:locks_remove_file+0x86/0x420 [ 1064.779558] RSP: 0018:ffff8880930d7af0 EFLAGS: 00010202 [ 1064.784898] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: fffffbfff14b4b80 [ 1064.792141] RDX: 000000000000000b RSI: 0000000000000001 RDI: 0000000000000058 [ 1064.799384] RBP: ffff88808ed3d780 R08: ffff8880831f0100 R09: dffffc0000000000 [ 1064.806641] R10: 0000000000000000 R11: ffff8880831f0100 R12: ffff88808ed3d918 [ 1064.813895] R13: ffff88808ed3d7fc R14: ffff88821984c870 R15: ffff88808ed3d790 [ 1064.821137] FS: 00007ffbd2d0a700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 1064.829335] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1064.835191] CR2: 00005582ccc50970 CR3: 000000009748c000 CR4: 00000000001406f0 [ 1064.842436] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1064.849693] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1064.856935] Call Trace: [ 1064.859510] ? fcntl_setlk+0xdb0/0xdb0 [ 1064.863435] ? eventpoll_release_file+0xe8/0x130 [ 1064.868200] __fput+0x1ca/0x7a0 [ 1064.871480] task_work_run+0x11f/0x190 [ 1064.875378] get_signal+0x18a3/0x1ca0 [ 1064.879217] ? wake_up_q+0x82/0xd0 [ 1064.882776] ? check_preemption_disabled+0x35/0x240 [ 1064.887776] do_signal+0x7c/0x1550 [ 1064.891295] ? task_work_add+0x87/0xe0 [ 1064.895167] ? fput+0xb/0x140 [ 1064.898243] ? setup_sigcontext+0x820/0x820 [ 1064.902538] ? _copy_to_user+0x82/0xd0 [ 1064.906397] ? SyS_epoll_create+0x170/0x170 [ 1064.910727] ? put_timespec64+0xaa/0xf0 [ 1064.914674] ? jiffies64_to_nsecs+0x20/0x20 [ 1064.918969] ? exit_to_usermode_loop+0x41/0x200 [ 1064.923631] exit_to_usermode_loop+0x160/0x200 [ 1064.928195] do_syscall_64+0x4a3/0x640 [ 1064.932125] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 1064.937301] RIP: 0033:0x45d5b9 [ 1064.940464] RSP: 002b:00007ffbd2d09c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 1064.948148] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 1064.955403] RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000005 [ 1064.962643] RBP: 000000000118d028 R08: 0000000000000000 R09: 0000000000000000 [ 1064.969899] R10: 0000000020000000 R11: 0000000000000246 R12: 000000000118cfec [ 1064.977154] R13: 00007ffc878d926f R14: 00007ffbd2d0a9c0 R15: 000000000118cfec [ 1064.984399] Code: 18 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 83 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 18 48 8d 7b 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 56 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 [ 1065.003728] RIP: locks_remove_file+0x86/0x420 RSP: ffff8880930d7af0 [ 1065.011274] ---[ end trace 10db2b5a3e432bfa ]--- [ 1065.016060] Kernel panic - not syncing: Fatal exception [ 1065.023217] Kernel Offset: disabled [ 1065.026825] Rebooting in 86400 seconds..