[ 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 '10.128.0.170' (ECDSA) to the list of known hosts. 2020/09/06 00:51:40 parsed 1 programs 2020/09/06 00:51:40 executed programs: 0 syzkaller login: [ 32.753394] audit: type=1400 audit(1599353500.681:8): avc: denied { execmem } for pid=6378 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.853249] IPVS: ftp: loaded support on port[0] = 21 [ 33.942807] chnl_net:caif_netlink_parms(): no params data found [ 34.047654] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.054755] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.061675] device bridge_slave_0 entered promiscuous mode [ 34.069239] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.076126] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.082914] device bridge_slave_1 entered promiscuous mode [ 34.099531] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.108304] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.125660] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.132820] team0: Port device team_slave_0 added [ 34.139364] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.146804] team0: Port device team_slave_1 added [ 34.161820] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.168103] 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. [ 34.194201] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.205915] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.212220] 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. [ 34.238317] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.249148] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 34.256775] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 34.274929] device hsr_slave_0 entered promiscuous mode [ 34.280583] device hsr_slave_1 entered promiscuous mode [ 34.286965] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 34.293858] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.352640] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.359081] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.365875] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.372235] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.400668] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.407420] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.416817] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.425220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.432868] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.450139] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.459979] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.466457] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.474675] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.482212] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.488742] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.497551] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.505840] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.512185] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.527617] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.535439] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.545426] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.557551] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 34.568114] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 34.578864] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.586349] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.594247] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.601607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.613025] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.621086] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.628117] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.637750] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.686309] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 34.696079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.725289] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 34.732172] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 34.739496] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 34.749416] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.756969] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.763983] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.772090] device veth0_vlan entered promiscuous mode [ 34.780654] device veth1_vlan entered promiscuous mode [ 34.787059] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.795790] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.806628] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.815734] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.822895] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.830851] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.840047] device veth0_macvtap entered promiscuous mode [ 34.846470] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.854637] device veth1_macvtap entered promiscuous mode [ 34.863011] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.872242] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.881950] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.888992] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.897195] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.907878] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.914876] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 34.933790] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 35.026169] audit: type=1400 audit(1599353502.963:9): avc: denied { block_suspend } for pid=6621 comm="syz-executor.0" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [ 35.883733] Bluetooth: hci0 command 0x0409 tx timeout 2020/09/06 00:51:45 executed programs: 234 [ 37.962371] Bluetooth: hci0 command 0x041b tx timeout [ 39.961914] kasan: CONFIG_KASAN_INLINE enabled [ 39.966663] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.975288] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.981519] Modules linked in: [ 39.984690] CPU: 0 PID: 8330 Comm: syz-executor.0 Not tainted 4.14.196-syzkaller #0 [ 39.992458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.001804] task: ffff888099c3a180 task.stack: ffff888089688000 [ 40.007841] RIP: 0010:__sock_release+0xbb/0x2b0 [ 40.012497] RSP: 0018:ffff88808968fdc0 EFLAGS: 00010202 [ 40.017834] RAX: dffffc0000000000 RBX: ffff88807e9961c0 RCX: 0000000000007cf0 [ 40.025095] RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000010 [ 40.032358] RBP: ffff88807e9962d0 R08: ffffffff8a0b8100 R09: 000000000004044e [ 40.039618] R10: ffff888099c3aa08 R11: ffff888099c3a180 R12: 0000000000000000 [ 40.046893] R13: ffff88807e9961e8 R14: 0000000000000000 R15: ffff88809ecdd850 [ 40.054144] FS: 00007f0c58dfd700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 40.062364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.068229] CR2: 0000000000000000 CR3: 000000009effb000 CR4: 00000000001406f0 [ 40.075503] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.082751] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.090013] Call Trace: [ 40.092599] ? __sock_release+0x2b0/0x2b0 [ 40.096721] sock_close+0x15/0x20 [ 40.100156] __fput+0x25f/0x7a0 [ 40.103417] task_work_run+0x11f/0x190 [ 40.107296] exit_to_usermode_loop+0x1ad/0x200 [ 40.111853] do_syscall_64+0x4a3/0x640 [ 40.115717] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 40.120882] RIP: 0033:0x45d5b9 [ 40.124045] RSP: 002b:00007f0c58dfcc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 40.131835] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 40.139094] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 40.146338] RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000 [ 40.153596] R10: 0000000020000340 R11: 0000000000000246 R12: 000000000118cf4c [ 40.160838] R13: 00007ffccd90b53f R14: 00007f0c58dfd9c0 R15: 000000000118cf4c [ 40.168083] 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 [ 40.187166] RIP: __sock_release+0xbb/0x2b0 RSP: ffff88808968fdc0 [ 40.193629] Bluetooth: hci0 command 0x040f tx timeout [ 40.199427] ---[ end trace a00c85d8b0bf3db7 ]--- [ 40.204405] Kernel panic - not syncing: Fatal exception [ 40.211082] Kernel Offset: disabled [ 40.214706] Rebooting in 86400 seconds..