Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. syzkaller login: [ 58.172351][ T7056] IPVS: ftp: loaded support on port[0] = 21 [ 58.266548][ T7056] chnl_net:caif_netlink_parms(): no params data found [ 58.320357][ T7056] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.327682][ T7056] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.336026][ T7056] device bridge_slave_0 entered promiscuous mode [ 58.346675][ T7056] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.354574][ T7056] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.362836][ T7056] device bridge_slave_1 entered promiscuous mode [ 58.383150][ T7056] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.394066][ T7056] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.417144][ T7056] team0: Port device team_slave_0 added [ 58.424561][ T7056] team0: Port device team_slave_1 added [ 58.443955][ T7056] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.451173][ T7056] 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. [ 58.478322][ T7056] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.490979][ T7056] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.498302][ T7056] 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. [ 58.525076][ T7056] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.611065][ T7056] device hsr_slave_0 entered promiscuous mode [ 58.657781][ T7056] device hsr_slave_1 entered promiscuous mode [ 58.775862][ T7056] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.821042][ T7056] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.890702][ T7056] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.950292][ T7056] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.003179][ T7056] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.010599][ T7056] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.018635][ T7056] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.025879][ T7056] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.071902][ T7056] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.085316][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.095637][ T2732] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.103978][ T2732] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.113485][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.127508][ T7056] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.138665][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.147212][ T27] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.154369][ T27] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.165395][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.175224][ T2732] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.182488][ T2732] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.209763][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.219560][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.229023][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.242343][ T7056] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.254653][ T7056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.264147][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.272282][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.293423][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.302060][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.315640][ T7056] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.342699][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 59.352521][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.374979][ T7056] device veth0_vlan entered promiscuous mode [ 59.382371][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 59.391799][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.402039][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.411446][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.424359][ T7056] device veth1_vlan entered promiscuous mode [ 59.445659][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.455242][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.464480][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 59.473835][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.486699][ T7056] device veth0_macvtap entered promiscuous mode [ 59.497517][ T7056] device veth1_macvtap entered promiscuous mode [ 59.515605][ T7056] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.523203][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.531964][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 59.540618][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 59.549930][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.564936][ T7056] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.573154][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.582783][ T2729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 59.797428][ T7265] ------------[ cut here ]------------ [ 59.802973][ T7265] AppArmor WARN aa_sock_msg_perm: ((!sock)): [ 59.803179][ T7265] WARNING: CPU: 1 PID: 7265 at security/apparmor/lsm.c:933 aa_sock_msg_perm.isra.0+0xd1/0x160 [ 59.819516][ T7265] Kernel panic - not syncing: panic_on_warn set ... [ 59.826098][ T7265] CPU: 1 PID: 7265 Comm: syz-executor875 Not tainted 5.7.0-rc5-syzkaller #0 [ 59.835178][ T7265] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.845230][ T7265] Call Trace: [ 59.848508][ T7265] dump_stack+0x188/0x20d [ 59.852928][ T7265] ? aa_sock_msg_perm.isra.0+0xb0/0x160 [ 59.858540][ T7265] panic+0x2e3/0x75c [ 59.862412][ T7265] ? add_taint.cold+0x16/0x16 [ 59.867070][ T7265] ? __probe_kernel_read+0x188/0x1d0 [ 59.872437][ T7265] ? __warn.cold+0x14/0x35 [ 59.876920][ T7265] ? __warn+0xd5/0x1c8 [ 59.880977][ T7265] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 59.886676][ T7265] __warn.cold+0x2f/0x35 [ 59.891185][ T7265] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 59.896813][ T7265] report_bug+0x27b/0x2f0 [ 59.901236][ T7265] do_error_trap+0x12b/0x220 [ 59.905825][ T7265] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 59.912312][ T7265] do_invalid_op+0x32/0x40 [ 59.917337][ T7265] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 59.922957][ T7265] invalid_op+0x23/0x30 [ 59.927236][ T7265] RIP: 0010:aa_sock_msg_perm.isra.0+0xd1/0x160 [ 59.933395][ T7265] Code: 89 ee 4c 89 e7 5b 5d 41 5c 41 5d 41 5e e9 d7 4d 03 00 e8 a2 84 0d fe 48 c7 c6 e0 08 6d 88 48 c7 c7 20 f3 6c 88 e8 67 c0 de fd <0f> 0b e9 4a ff ff ff e8 83 84 0d fe 48 c7 c6 e0 08 6d 88 48 c7 c7 [ 59.953070][ T7265] RSP: 0018:ffffc90001a67a38 EFLAGS: 00010286 [ 59.959118][ T7265] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 59.967069][ T7265] RDX: 0000000000000000 RSI: ffffffff815ce6c1 RDI: fffff5200034cf39 [ 59.975034][ T7265] RBP: ffffc90001a67d78 R08: ffff88809382e600 R09: 0000000000000000 [ 59.983077][ T7265] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff886cf2e0 [ 59.991139][ T7265] R13: 0000000000000004 R14: 0000000000001000 R15: 0000000040000000 [ 59.999115][ T7265] ? vprintk_func+0x81/0x17e [ 60.003756][ T7265] ? aa_sock_msg_perm.isra.0+0xd1/0x160 [ 60.009300][ T7265] security_socket_recvmsg+0x78/0xc0 [ 60.014656][ T7265] sock_recvmsg+0x47/0x110 [ 60.019065][ T7265] mptcp_recvmsg+0xb3b/0xd90 [ 60.023812][ T7265] ? mptcp_sendmsg+0x17f0/0x17f0 [ 60.028745][ T7265] ? prepare_to_wait_exclusive+0x2c0/0x2c0 [ 60.034532][ T7265] ? aa_sk_perm+0x319/0xab0 [ 60.039635][ T7265] inet_recvmsg+0x121/0x5d0 [ 60.044139][ T7265] ? inet_sendpage+0x140/0x140 [ 60.048883][ T7265] ? security_socket_recvmsg+0x8e/0xc0 [ 60.054525][ T7265] ? inet_sendpage+0x140/0x140 [ 60.059277][ T7265] sock_recvmsg+0xca/0x110 [ 60.063696][ T7265] __sys_recvfrom+0x1be/0x2f0 [ 60.068374][ T7265] ? __ia32_sys_send+0x100/0x100 [ 60.073314][ T7265] ? __sys_connect+0x109/0x190 [ 60.078157][ T7265] ? __x64_sys_futex+0x376/0x4f0 [ 60.083081][ T7265] ? __x64_sys_futex+0x380/0x4f0 [ 60.088000][ T7265] ? switch_fpu_return+0x1db/0x4b0 [ 60.093106][ T7265] ? fpregs_mark_activate+0x320/0x320 [ 60.098478][ T7265] __x64_sys_recvfrom+0xdd/0x1b0 [ 60.103395][ T7265] ? lockdep_hardirqs_on+0x463/0x620 [ 60.108658][ T7265] do_syscall_64+0xf6/0x7d0 [ 60.113140][ T7265] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.119041][ T7265] RIP: 0033:0x448ef9 [ 60.122925][ T7265] 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 [ 60.142713][ T7265] RSP: 002b:00007f5087c41da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002d [ 60.151469][ T7265] RAX: ffffffffffffffda RBX: 00000000006dec28 RCX: 0000000000448ef9 [ 60.159443][ T7265] RDX: 0000000000001000 RSI: 00000000200004c0 RDI: 0000000000000003 [ 60.167419][ T7265] RBP: 00000000006dec20 R08: 0000000000000000 R09: 0000000000000000 [ 60.175383][ T7265] R10: 0000000040000000 R11: 0000000000000246 R12: 00000000006dec2c [ 60.183337][ T7265] R13: 00007ffdd33d4d5f R14: 00007f5087c429c0 R15: 00000000006dec2c [ 60.192816][ T7265] Kernel Offset: disabled [ 60.197199][ T7265] Rebooting in 86400 seconds..