[ 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 '10.128.0.25' (ECDSA) to the list of known hosts. syzkaller login: [ 41.525103] audit: type=1400 audit(1593099082.975:8): avc: denied { execmem } for pid=6443 comm="syz-executor082" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.545576] IPVS: ftp: loaded support on port[0] = 21 [ 41.624254] chnl_net:caif_netlink_parms(): no params data found [ 41.743370] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.751079] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.758534] device bridge_slave_0 entered promiscuous mode [ 41.767349] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.774021] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.781518] device bridge_slave_1 entered promiscuous mode [ 41.803426] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.812719] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.832630] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.841752] team0: Port device team_slave_0 added [ 41.847443] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 41.855235] team0: Port device team_slave_1 added [ 41.871893] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 41.878158] 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. [ 41.903452] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 41.915524] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 41.921889] 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. [ 41.947267] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 41.958336] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.966530] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.023304] device hsr_slave_0 entered promiscuous mode [ 42.060481] device hsr_slave_1 entered promiscuous mode [ 42.120957] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 42.129856] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 42.205223] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.211921] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.218897] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.225344] bridge0: port 1(bridge_slave_0) entered forwarding state [ 42.265734] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 42.273291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 42.283612] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 42.293133] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 42.302646] bridge0: port 1(bridge_slave_0) entered disabled state [ 42.320673] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.328330] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 42.341895] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 42.347998] 8021q: adding VLAN 0 to HW filter on device team0 [ 42.359513] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 42.367927] bridge0: port 1(bridge_slave_0) entered blocking state [ 42.374399] bridge0: port 1(bridge_slave_0) entered forwarding state [ 42.385856] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 42.394626] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.402126] bridge0: port 2(bridge_slave_1) entered forwarding state [ 42.418793] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.426832] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 42.441047] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.452464] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 42.465134] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 42.475893] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 42.482586] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 42.491622] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 42.506416] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 42.514929] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 42.524222] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 42.535357] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 42.549183] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 42.561012] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 42.602152] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 42.609349] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 42.617416] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 42.628130] IPv6: ADDRCONF(NETDEV_UP): veth1_vlan: link is not ready [ 42.635514] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 42.644819] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 42.654662] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 42.662364] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 42.672955] device veth0_vlan entered promiscuous mode [ 42.683262] device veth1_vlan entered promiscuous mode [ 42.689311] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 42.698818] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 42.712486] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 42.722811] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready [ 42.729940] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 42.737351] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 42.745005] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 42.753000] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 42.764115] device veth0_macvtap entered promiscuous mode [ 42.771137] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 42.779967] device veth1_macvtap entered promiscuous mode [ 42.786376] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready [ 42.796291] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 42.807674] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 42.817753] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 42.825644] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 42.833046] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 42.840771] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 42.847947] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 42.856155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 42.867757] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 42.875779] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 42.884433] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 42.893481] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 43.075212] kasan: CONFIG_KASAN_INLINE enabled [ 43.079991] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.087347] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.093568] CPU: 1 PID: 6666 Comm: syz-executor082 Not tainted 4.19.130-syzkaller #0 [ 43.101453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.110813] RIP: 0010:xfrmi_decode_session+0x146/0x770 [ 43.116095] Code: 7c dc 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f4 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5c dc 10 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 c7 05 00 00 4c 8b 23 e8 a8 b5 19 fb e8 d3 74 2b [ 43.135078] RSP: 0018:ffff888081d97188 EFLAGS: 00010246 [ 43.140446] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff863e3824 [ 43.148397] RDX: 0000000000000000 RSI: ffffffff863e3270 RDI: ffff8880a4136788 [ 43.155652] RBP: 0000000000000039 R08: 0000000000000000 R09: 0000000000000000 [ 43.162914] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880a4136780 [ 43.170167] R13: 000000000000003f R14: ffff8880949505c0 R15: 0000000000000000 [ 43.177610] FS: 00007f0c5fddb700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 43.185824] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.191689] CR2: 00007f0c5fddae78 CR3: 0000000091301000 CR4: 00000000001406e0 [ 43.198951] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.206308] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.213565] Call Trace: [ 43.216147] __xfrm_policy_check+0x1eb/0x2300 [ 43.220638] ? __lock_acquire+0x6de/0x3ff0 [ 43.224875] ? __xfrm_route_forward+0x710/0x710 [ 43.229553] ? mark_held_locks+0xf0/0xf0 [ 43.233707] ? mark_held_locks+0xa6/0xf0 [ 43.237775] ? nf_ct_deliver_cached_events+0x205/0x630 [ 43.243059] ? mark_held_locks+0xf0/0xf0 [ 43.247128] ? lock_downgrade+0x720/0x720 [ 43.251270] ? check_preemption_disabled+0x41/0x280 [ 43.256456] ? vti_input+0x21d/0x800 [ 43.260178] ? lock_downgrade+0x720/0x720 [ 43.264322] ? check_preemption_disabled+0x41/0x280 [ 43.269332] ? ip_tunnel_lookup+0x9e9/0xdf0 [ 43.273675] vti_input+0x57c/0x800 [ 43.277208] xfrm4_esp_rcv+0xc8/0x220 [ 43.280998] ip_local_deliver_finish+0x495/0xc00 [ 43.285742] ip_local_deliver+0x188/0x500 [ 43.289916] ? ip_call_ra_chain+0x5d0/0x5d0 [ 43.294251] ? inet_add_protocol.cold+0x27/0x27 [ 43.298913] ? ip_rcv_finish_core.constprop.0+0x875/0x1a60 [ 43.304526] ip_rcv_finish+0x1ca/0x2e0 [ 43.308415] ip_rcv+0xca/0x3c0 [ 43.311591] ? ip_local_deliver+0x500/0x500 [ 43.315899] ? ip_sublist_rcv+0xc40/0xc40 [ 43.320037] ? netif_receive_skb_internal+0x1da/0x3f0 [ 43.325223] ? ip_local_deliver+0x500/0x500 [ 43.329541] __netif_receive_skb_one_core+0x114/0x180 [ 43.334732] ? __netif_receive_skb_core+0x3270/0x3270 [ 43.340254] ? mark_held_locks+0xa6/0xf0 [ 43.344304] ? lock_acquire+0x170/0x3c0 [ 43.348280] ? netif_receive_skb_internal+0x6e/0x3f0 [ 43.353370] __netif_receive_skb+0x27/0x1c0 [ 43.357689] netif_receive_skb_internal+0xf0/0x3f0 [ 43.362606] ? __netif_receive_skb+0x1c0/0x1c0 [ 43.367179] ? eth_get_headlen+0x1b0/0x1b0 [ 43.371417] napi_gro_frags+0x67b/0x990 [ 43.375386] tun_get_user+0x2a94/0x4c30 [ 43.379374] ? tun_chr_read_iter+0x1d0/0x1d0 [ 43.383771] ? lock_downgrade+0x720/0x720 [ 43.387906] ? check_preemption_disabled+0x41/0x280 [ 43.392907] ? check_preemption_disabled+0x41/0x280 [ 43.397929] tun_chr_write_iter+0xb0/0x150 [ 43.402167] __vfs_write+0x51b/0x770 [ 43.405867] ? kernel_read+0x110/0x110 [ 43.409744] __kernel_write+0x109/0x370 [ 43.413722] write_pipe_buf+0x153/0x1f0 [ 43.417703] ? default_file_splice_read+0xa00/0xa00 [ 43.422718] ? splice_from_pipe_next.part.0+0x2ad/0x360 [ 43.428067] __splice_from_pipe+0x389/0x800 [ 43.432405] ? default_file_splice_read+0xa00/0xa00 [ 43.437412] default_file_splice_write+0xd8/0x180 [ 43.442247] ? generic_splice_sendpage+0x140/0x140 [ 43.447305] ? security_file_permission+0x1c0/0x220 [ 43.452334] ? generic_splice_sendpage+0x140/0x140 [ 43.457262] __se_sys_splice+0xfe7/0x16d0 [ 43.461552] ? lock_acquire+0x170/0x3c0 [ 43.465543] ? ret_from_fork+0x8/0x30 [ 43.469345] ? __se_sys_tee+0xb90/0xb90 [ 43.473328] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.478076] ? trace_hardirqs_off_caller+0x69/0x210 [ 43.483127] ? do_syscall_64+0x21/0x620 [ 43.487272] do_syscall_64+0xf9/0x620 [ 43.491092] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.496287] RIP: 0033:0x448c19 [ 43.499490] Code: e8 cc 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 43.518395] RSP: 002b:00007f0c5fddad98 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 43.526180] RAX: ffffffffffffffda RBX: 00000000006dec78 RCX: 0000000000448c19 [ 43.533471] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 43.540729] RBP: 00000000006dec70 R08: 0000000000010005 R09: 0000000000000000 [ 43.548420] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec7c [ 43.555690] R13: 0000000000003172 R14: 656c6c616b7a7973 R15: 00000000006dec7c [ 43.562949] Modules linked in: [ 43.566224] ---[ end trace 290ce0cc134b685b ]--- [ 43.571037] RIP: 0010:xfrmi_decode_session+0x146/0x770 [ 43.576329] Code: 7c dc 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f4 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5c dc 10 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 c7 05 00 00 4c 8b 23 e8 a8 b5 19 fb e8 d3 74 2b [ 43.595314] RSP: 0018:ffff888081d97188 EFLAGS: 00010246 [ 43.600750] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff863e3824 [ 43.608033] RDX: 0000000000000000 RSI: ffffffff863e3270 RDI: ffff8880a4136788 [ 43.615356] RBP: 0000000000000039 R08: 0000000000000000 R09: 0000000000000000 [ 43.622678] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880a4136780 [ 43.629996] R13: 000000000000003f R14: ffff8880949505c0 R15: 0000000000000000 [ 43.637308] FS: 00007f0c5fddb700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 43.645582] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.651788] CR2: 00007f0c5fddae78 CR3: 0000000091301000 CR4: 00000000001406e0 [ 43.659115] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.666391] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.673695] Kernel panic - not syncing: Fatal exception in interrupt [ 43.681656] Kernel Offset: disabled [ 43.685505] Rebooting in 86400 seconds..