[ OK ] Started OpenBSD Secure Shell server. [ 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 '10.128.1.23' (ECDSA) to the list of known hosts. 2020/10/07 16:06:08 parsed 1 programs 2020/10/07 16:06:09 executed programs: 0 syzkaller login: [ 32.416356] audit: type=1400 audit(1602086769.069:8): avc: denied { execmem } for pid=6373 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.542645] IPVS: ftp: loaded support on port[0] = 21 [ 33.620877] chnl_net:caif_netlink_parms(): no params data found [ 33.692307] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.698900] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.706766] device bridge_slave_0 entered promiscuous mode [ 33.713845] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.720188] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.727487] device bridge_slave_1 entered promiscuous mode [ 33.743576] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.752175] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.770104] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.777248] team0: Port device team_slave_0 added [ 33.783047] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.790036] team0: Port device team_slave_1 added [ 33.805326] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.811735] 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. [ 33.836994] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.848511] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.854984] 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. [ 33.881349] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.893090] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.900363] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.918221] device hsr_slave_0 entered promiscuous mode [ 33.924162] device hsr_slave_1 entered promiscuous mode [ 33.930006] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.937153] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 33.996904] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.003320] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.010023] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.016401] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.043801] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.049870] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.059665] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.068254] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.087128] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.094468] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.105579] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.111754] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.119650] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.128038] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.134424] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.144429] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.152582] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.158906] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.178004] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 34.188020] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 34.198859] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.206044] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.214113] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.221828] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.229383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.237047] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.243920] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.256712] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.264275] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.271326] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.282892] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.332108] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 34.342328] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.371339] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 34.378203] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 34.386505] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 34.395846] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.403520] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.410456] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.418729] device veth0_vlan entered promiscuous mode [ 34.427643] device veth1_vlan entered promiscuous mode [ 34.433860] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.443314] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.454050] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.462880] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.469876] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.477831] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.486864] device veth0_macvtap entered promiscuous mode [ 34.493740] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 34.502555] device veth1_macvtap entered promiscuous mode [ 34.510842] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.519429] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.529972] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.537916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.546496] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 34.556011] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.562919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 34.621041] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.666426] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 34.680738] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.693871] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.704754] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.727369] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 34.741621] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.749322] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.757374] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 35.022910] kasan: CONFIG_KASAN_INLINE enabled [ 35.022914] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.022925] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 35.022928] Modules linked in: [ 35.022938] CPU: 1 PID: 6374 Comm: syz-executor.0 Not tainted 4.14.198-syzkaller #0 [ 35.022942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.022947] task: ffff88808b3e6140 task.stack: ffff8880977e0000 [ 35.022959] RIP: 0010:do_syscall_64+0x3d8/0x640 [ 35.022963] RSP: 0018:ffff8880977e7f00 EFLAGS: 00010802 [ 35.022969] RAX: df07700077000000 RBX: ffff88808b3e6140 RCX: 0000000000000000 [ 35.022973] RDX: 1ffff1101167cc29 RSI: 0000000000000000 RDI: ffff88808b3e6148 [ 35.022977] RBP: ffff8880977e7f58 R08: ffffffff8a084940 R09: 0000000000000000 [ 35.022981] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.022985] R13: ffff8880977e7fd0 R14: 1ffffffff0fa2d20 R15: 0000000000000000 [ 35.022990] FS: 00000000022bf940(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 35.022994] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.022999] CR2: 000000000118c000 CR3: 00000000a96c0000 CR4: 00000000001406e0 [ 35.023006] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.023009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.023012] Call Trace: [ 35.023025] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.023030] RIP: 0033:0x45c2f1 [ 35.023033] RSP: 002b:00007fffc5545f60 EFLAGS: 00000293 ORIG_RAX: 0000000000000023 [ 35.023040] RAX: 0000000000000000 RBX: 00000000000088db RCX: 000000000045c2f1 [ 35.023044] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fffc5545f70 [ 35.023048] RBP: 0000000000000007 R08: 0000000000000000 R09: 00000000022bf940 [ 35.023051] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 [ 35.023055] R13: 00007fffc5545fc0 R14: 00000000000088a2 R15: 00007fffc5545fd0 [ 35.023063] Code: 00 4c 8b 23 41 f7 c4 0e 38 00 00 0f 85 d5 00 00 00 e8 bd 25 5b 00 48 8d 7b 08 48 b8 00 00 00 77 00 70 07 df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e c0 00 00 00 83 63 08 f9 0f [ 35.023194] RIP: do_syscall_64+0x3d8/0x640 RSP: ffff8880977e7f00 [ 35.023203] ---[ end trace 6630cf0269adc648 ]--- [ 35.023207] Kernel panic - not syncing: Fatal exception [ 35.024696] Kernel Offset: disabled [ 35.244835] Rebooting in 86400 seconds..