[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.0.46' (ECDSA) to the list of known hosts. syzkaller login: [ 58.992447][ T6809] IPVS: ftp: loaded support on port[0] = 21 [ 59.084522][ T6809] chnl_net:caif_netlink_parms(): no params data found [ 59.134789][ T6809] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.142457][ T6809] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.151487][ T6809] device bridge_slave_0 entered promiscuous mode [ 59.159849][ T6809] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.168587][ T6809] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.176651][ T6809] device bridge_slave_1 entered promiscuous mode [ 59.197789][ T6809] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.208716][ T6809] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.231584][ T6809] team0: Port device team_slave_0 added [ 59.238931][ T6809] team0: Port device team_slave_1 added [ 59.273641][ T6809] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.280809][ T6809] 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. [ 59.310050][ T6809] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 59.324356][ T6809] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 59.331576][ T6809] 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. [ 59.358026][ T6809] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 59.433559][ T6809] device hsr_slave_0 entered promiscuous mode [ 59.470433][ T6809] device hsr_slave_1 entered promiscuous mode [ 59.598639][ T6809] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.653478][ T6809] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.702399][ T6809] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.742219][ T6809] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.807078][ T6809] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.814259][ T6809] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.822346][ T6809] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.829412][ T6809] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.877653][ T6809] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.891566][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.902112][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.909817][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.918521][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.931969][ T6809] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.943258][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.952354][ T2477] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.959454][ T2477] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.980997][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.989398][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.996545][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.007081][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.017232][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.034491][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.042909][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.056385][ T6809] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.069311][ T6809] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.079061][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.101129][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.108734][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.121244][ T6809] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.146761][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 60.156540][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 60.178618][ T6809] device veth0_vlan entered promiscuous mode [ 60.186212][ T2495] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 60.195234][ T2495] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 60.204931][ T2495] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 60.213520][ T2495] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 60.225904][ T6809] device veth1_vlan entered promiscuous mode [ 60.247158][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 60.256621][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 60.265435][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 60.274556][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 60.286253][ T6809] device veth0_macvtap entered promiscuous mode [ 60.297697][ T6809] device veth1_macvtap entered promiscuous mode [ 60.315068][ T6809] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 60.323842][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 60.333059][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 60.341701][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 60.351266][ T2477] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 60.367232][ T6809] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 60.375798][ T2495] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 60.384459][ T2495] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 60.632087][ T7018] ------------[ cut here ]------------ [ 60.637703][ T7018] AppArmor WARN aa_sock_msg_perm: ((!sock)): [ 60.637954][ T7018] WARNING: CPU: 1 PID: 7018 at security/apparmor/lsm.c:933 aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.654191][ T7018] Kernel panic - not syncing: panic_on_warn set ... [ 60.660841][ T7018] CPU: 1 PID: 7018 Comm: syz-executor263 Not tainted 5.7.0-rc6-next-20200522-syzkaller #0 [ 60.670721][ T7018] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.680762][ T7018] Call Trace: [ 60.684044][ T7018] dump_stack+0x18f/0x20d [ 60.688359][ T7018] ? aa_sock_msg_perm.isra.0+0x80/0x160 [ 60.693915][ T7018] panic+0x2e3/0x75c [ 60.697790][ T7018] ? __warn_printk+0xf3/0xf3 [ 60.702383][ T7018] ? __probe_kernel_read+0x188/0x1d0 [ 60.707640][ T7018] ? __warn.cold+0x14/0x3a [ 60.712030][ T7018] ? __warn+0xd6/0x1b2 [ 60.716077][ T7018] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.721600][ T7018] __warn.cold+0x2f/0x3a [ 60.725818][ T7018] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.731787][ T7018] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.737307][ T7018] report_bug+0x27b/0x2f0 [ 60.741617][ T7018] do_error_trap+0x12b/0x220 [ 60.746184][ T7018] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.751712][ T7018] do_invalid_op+0x32/0x40 [ 60.756121][ T7018] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.761671][ T7018] invalid_op+0x23/0x30 [ 60.765815][ T7018] RIP: 0010:aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.772050][ T7018] Code: 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41 5e e9 57 52 03 00 e8 22 d8 09 fe 48 c7 c6 00 83 8d 88 48 c7 c7 40 6d 8d 88 e8 e1 e3 da fd <0f> 0b e9 4a ff ff ff e8 03 d8 09 fe 48 c7 c6 00 83 8d 88 48 c7 c7 [ 60.791665][ T7018] RSP: 0018:ffffc90001d1fa38 EFLAGS: 00010286 [ 60.797710][ T7018] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 60.805655][ T7018] RDX: 0000000000000000 RSI: ffffffff815d3c57 RDI: fffff520003a3f39 [ 60.813645][ T7018] RBP: ffffc90001d1fd78 R08: ffff88809e6f61c0 R09: 0000000000000001 [ 60.821602][ T7018] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff888d6d00 [ 60.829552][ T7018] R13: 0000000000000004 R14: 0000000000001000 R15: 0000000040000000 [ 60.837517][ T7018] ? vprintk_func+0x97/0x1a6 [ 60.842100][ T7018] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.847625][ T7018] security_socket_recvmsg+0x78/0xc0 [ 60.852888][ T7018] sock_recvmsg+0x47/0x110 [ 60.857291][ T7018] mptcp_recvmsg+0xb3b/0xd90 [ 60.861872][ T7018] ? mptcp_sendmsg+0x17f0/0x17f0 [ 60.866796][ T7018] ? prepare_to_wait_exclusive+0x2c0/0x2c0 [ 60.872578][ T7018] ? aa_sk_perm+0x319/0xac0 [ 60.877099][ T7018] inet_recvmsg+0x121/0x5d0 [ 60.881581][ T7018] ? inet_sendpage+0x140/0x140 [ 60.886318][ T7018] ? security_socket_recvmsg+0x8e/0xc0 [ 60.891748][ T7018] ? inet_sendpage+0x140/0x140 [ 60.896612][ T7018] sock_recvmsg+0xca/0x110 [ 60.901132][ T7018] __sys_recvfrom+0x1be/0x2f0 [ 60.905800][ T7018] ? __ia32_sys_send+0x100/0x100 [ 60.910728][ T7018] ? __sys_connect+0x109/0x190 [ 60.915480][ T7018] ? __x64_sys_futex+0x376/0x4f0 [ 60.920393][ T7018] ? __x64_sys_futex+0x380/0x4f0 [ 60.925311][ T7018] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 60.930757][ T7018] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.936714][ T7018] __x64_sys_recvfrom+0xdd/0x1b0 [ 60.941643][ T7018] do_syscall_64+0xf6/0x7d0 [ 60.946123][ T7018] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.951990][ T7018] RIP: 0033:0x448ef9 [ 60.955872][ T7018] 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 9b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 60.975483][ T7018] RSP: 002b:00007fd4e1f51da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 60.983869][ T7018] RAX: ffffffffffffffda RBX: 00000000006dec28 RCX: 0000000000448ef9 [ 60.991827][ T7018] RDX: 0000000000001000 RSI: 00000000200004c0 RDI: 0000000000000003 [ 60.999771][ T7018] RBP: 00000000006dec20 R08: 0000000000000000 R09: 0000000000000000 [ 61.007715][ T7018] R10: 0000000040000000 R11: 0000000000000246 R12: 00000000006dec2c [ 61.015661][ T7018] R13: 00007fffe0bcce4f R14: 00007fd4e1f529c0 R15: 00000000006dec2c [ 61.025238][ T7018] Kernel Offset: disabled [ 61.029612][ T7018] Rebooting in 86400 seconds..