[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. syzkaller login: [ 35.590030] IPVS: ftp: loaded support on port[0] = 21 [ 35.661546] chnl_net:caif_netlink_parms(): no params data found [ 35.744536] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.751431] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.759500] device bridge_slave_0 entered promiscuous mode [ 35.766553] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.773012] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.780438] device bridge_slave_1 entered promiscuous mode [ 35.798239] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.806926] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.824922] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.832385] team0: Port device team_slave_0 added [ 35.838269] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.845481] team0: Port device team_slave_1 added [ 35.860436] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.866821] 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. [ 35.892045] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.903385] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.909697] 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. [ 35.934952] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.945902] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 35.953495] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 35.972422] device hsr_slave_0 entered promiscuous mode [ 35.978185] device hsr_slave_1 entered promiscuous mode [ 35.984189] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 35.991433] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 36.055682] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.062113] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.069073] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.075429] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.106576] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 36.113638] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.122540] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.131365] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.140730] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.148054] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.154978] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.165862] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 36.172131] 8021q: adding VLAN 0 to HW filter on device team0 [ 36.181775] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 36.189530] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.195876] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.217628] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.225211] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.231616] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.239895] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.247857] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.255386] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.263696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.271498] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.279326] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 36.285324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 36.298976] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 36.306128] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.313205] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.324729] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 36.338094] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 36.348244] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.381425] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 36.388461] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 36.394999] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 36.405465] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.413131] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.420585] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.429636] device veth0_vlan entered promiscuous mode [ 36.438626] device veth1_vlan entered promiscuous mode [ 36.444441] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 36.454369] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 36.465264] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 36.474904] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 36.482763] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 36.490485] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.500184] device veth0_macvtap entered promiscuous mode [ 36.506246] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 36.515023] device veth1_macvtap entered promiscuous mode [ 36.523763] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 36.533285] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.543054] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.550236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.558821] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 36.569869] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 36.577225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 36.661509] skbuff: skb_over_panic: text:00000000bbca7a72 len:65575 put:65575 head:00000000ecb5d5f7 data:0000000034cc643d tail:0x100cf end:0x6c0 dev: [ 36.676792] ------------[ cut here ]------------ [ 36.681554] kernel BUG at net/core/skbuff.c:104! [ 36.687668] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 36.693046] CPU: 1 PID: 8118 Comm: syz-executor754 Not tainted 4.19.211-syzkaller #0 [ 36.700906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.710248] RIP: 0010:skb_panic+0x172/0x174 [ 36.714551] Code: 4c 24 10 8b 8b 80 00 00 00 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 60 4f 4c 89 ff 74 24 10 ff 74 24 20 e8 f1 18 e2 ff <0f> 0b e8 7f e7 50 f9 4c 8b 64 24 18 e8 c5 aa 86 f9 48 c7 c1 c0 58 [ 36.733436] RSP: 0018:ffff8880988c7468 EFLAGS: 00010286 [ 36.738782] RAX: 000000000000008f RBX: ffff8880aa7d4680 RCX: 0000000000000000 [ 36.746030] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1013118e7f [ 36.753279] RBP: ffffffff894c5900 R08: 000000000000008f R09: 0000000000000000 [ 36.760526] R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff870297c8 [ 36.767777] R13: 0000000000010027 R14: ffffffff894c4f20 R15: 00000000000006c0 [ 36.775028] FS: 0000555557441300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.783233] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.789095] CR2: 00007f8f3145b6c0 CR3: 00000000978d2000 CR4: 00000000003406e0 [ 36.796352] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.803612] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.810865] Call Trace: [ 36.813443] ? memset+0x20/0x40 [ 36.816710] ? __ip6_append_data.isra.0+0x1d58/0x2e20 [ 36.821886] skb_put.cold+0x24/0x24 [ 36.825498] __ip6_append_data.isra.0+0x1d58/0x2e20 [ 36.830499] ? rawv6_recvmsg+0xd30/0xd30 [ 36.834543] ? ip6_setup_cork+0x1750/0x1750 [ 36.838846] ? ip6_sk_dst_lookup_flow+0xa70/0xa70 [ 36.843671] ip6_append_data+0x1e7/0x330 [ 36.847712] ? rawv6_recvmsg+0xd30/0xd30 [ 36.851759] ? rawv6_recvmsg+0xd30/0xd30 [ 36.855801] rawv6_sendmsg+0x1444/0x36a0 [ 36.859901] ? compat_rawv6_setsockopt+0x140/0x140 [ 36.864817] ? __might_fault+0xef/0x1d0 [ 36.868777] ? aa_profile_af_perm+0x2e0/0x2e0 [ 36.873300] ? __might_fault+0x192/0x1d0 [ 36.877340] ? _copy_from_user+0xd2/0x130 [ 36.881473] ? rw_copy_check_uvector+0x27c/0x340 [ 36.886214] ? aa_af_perm+0x230/0x230 [ 36.889995] ? kernel_recvmsg+0x220/0x220 [ 36.894124] ? mark_held_locks+0xa6/0xf0 [ 36.898168] inet_sendmsg+0x132/0x5a0 [ 36.901953] ? security_socket_sendmsg+0x83/0xb0 [ 36.906690] ? inet_recvmsg+0x5c0/0x5c0 [ 36.910749] sock_sendmsg+0xc3/0x120 [ 36.914447] ___sys_sendmsg+0x3b3/0x8e0 [ 36.918448] ? copy_msghdr_from_user+0x440/0x440 [ 36.923188] ? ip6_datagram_dst_update+0x81d/0xc10 [ 36.928099] ? aa_label_sk_perm+0xf1/0x510 [ 36.932373] ? ip6_datagram_send_ctl+0x16e0/0x16e0 [ 36.937283] ? aa_profile_af_perm+0x2e0/0x2e0 [ 36.941756] ? __ip6_datagram_connect+0x1059/0x1530 [ 36.946754] ? reacquire_held_locks+0xb5/0x430 [ 36.951358] ? release_sock+0x1b/0x1b0 [ 36.955227] ? prandom_u32+0x171/0x1f0 [ 36.959096] ? __fdget+0x1a0/0x230 [ 36.962620] __sys_sendmmsg+0x195/0x470 [ 36.966579] ? __ia32_sys_sendmsg+0x220/0x220 [ 36.971054] ? aa_sk_perm+0x534/0x930 [ 36.974839] ? inet_autobind+0x190/0x190 [ 36.978881] ? ipv6_setsockopt+0x7f/0x160 [ 36.983009] ? rawv6_setsockopt+0x5d/0x140 [ 36.987226] ? __sys_setsockopt+0x179/0x240 [ 36.991526] ? kernel_accept+0x310/0x310 [ 36.995566] ? up_read+0x17/0x110 [ 36.999002] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.004347] __x64_sys_sendmmsg+0x99/0x100 [ 37.008565] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.013126] do_syscall_64+0xf9/0x620 [ 37.016910] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.022079] RIP: 0033:0x7f1168c293f9 [ 37.025771] Code: 28 c3 e8 4a 15 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 37.044653] RSP: 002b:00007ffcae96f588 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 37.052342] RAX: ffffffffffffffda RBX: 00007ffcae96f598 RCX: 00007f1168c293f9 [ 37.059590] RDX: 0000000000000001 RSI: 00000000200002c0 RDI: 0000000000000003 [ 37.066838] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 37.074090] R10: 000000000000fe80 R11: 0000000000000246 R12: 00007ffcae96f5a0 [ 37.081342] R13: 00007ffcae96f5c0 R14: 0000000000000000 R15: 0000000000000000 [ 37.088596] Modules linked in: [ 37.106103] ---[ end trace b6e0052a87e94bcb ]--- [ 37.110896] RIP: 0010:skb_panic+0x172/0x174 [ 37.115221] Code: 4c 24 10 8b 8b 80 00 00 00 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 60 4f 4c 89 ff 74 24 10 ff 74 24 20 e8 f1 18 e2 ff <0f> 0b e8 7f e7 50 f9 4c 8b 64 24 18 e8 c5 aa 86 f9 48 c7 c1 c0 58 [ 37.134833] RSP: 0018:ffff8880988c7468 EFLAGS: 00010286 [ 37.140406] RAX: 000000000000008f RBX: ffff8880aa7d4680 RCX: 0000000000000000 [ 37.147758] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1013118e7f [ 37.155078] RBP: ffffffff894c5900 R08: 000000000000008f R09: 0000000000000000 [ 37.162378] R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff870297c8 [ 37.169701] R13: 0000000000010027 R14: ffffffff894c4f20 R15: 00000000000006c0 [ 37.177009] FS: 0000555557441300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 37.185230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.191158] CR2: 00007face2022000 CR3: 00000000978d2000 CR4: 00000000003406f0 [ 37.198489] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.205747] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.213061] Kernel panic - not syncing: Fatal exception [ 37.218661] Kernel Offset: disabled [ 37.222279] Rebooting in 86400 seconds..