Starting getty on tty2-tty6 if dbus and logind are not available... Starting System Logging Service... Starting Permit User Sessions... [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Found device /dev/ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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... 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 '10.128.10.42' (ECDSA) to the list of known hosts. syzkaller login: [ 72.089989][ T26] audit: type=1400 audit(1601305174.650:8): avc: denied { execmem } for pid=6861 comm="syz-executor088" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 72.113105][ T6862] IPVS: ftp: loaded support on port[0] = 21 [ 72.213840][ T6862] chnl_net:caif_netlink_parms(): no params data found [ 72.269539][ T6862] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.277059][ T6862] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.284968][ T6862] device bridge_slave_0 entered promiscuous mode [ 72.294632][ T6862] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.302328][ T6862] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.310693][ T6862] device bridge_slave_1 entered promiscuous mode [ 72.332149][ T6862] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.343124][ T6862] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.368242][ T6862] team0: Port device team_slave_0 added [ 72.377618][ T6862] team0: Port device team_slave_1 added [ 72.396075][ T6862] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.403046][ T6862] 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. [ 72.429820][ T6862] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.442714][ T6862] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.450303][ T6862] 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. [ 72.477221][ T6862] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.506385][ T6862] device hsr_slave_0 entered promiscuous mode [ 72.513111][ T6862] device hsr_slave_1 entered promiscuous mode [ 72.619683][ T6862] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.629638][ T6862] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.647933][ T6862] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.658593][ T6862] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.684539][ T6862] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.691747][ T6862] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.699472][ T6862] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.706608][ T6862] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.763129][ T6862] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.778160][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.790256][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.798573][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.807144][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.821424][ T6862] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.833558][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.843515][ T2473] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.850640][ T2473] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.876716][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.885057][ T2473] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.892187][ T2473] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.900872][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.910111][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.925872][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.933997][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.943344][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.955020][ T6862] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.974747][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.982786][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.996511][ T6862] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.017560][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.039619][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.048079][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.057669][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.069241][ T6862] device veth0_vlan entered promiscuous mode [ 73.082387][ T6862] device veth1_vlan entered promiscuous mode [ 73.104869][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.115026][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.123947][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.134747][ T6862] device veth0_macvtap entered promiscuous mode [ 73.147376][ T6862] device veth1_macvtap entered promiscuous mode [ 73.167640][ T6862] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.177967][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.188662][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.200738][ T6862] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.209161][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program [ 73.219252][ T2473] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.231649][ T6862] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.240799][ T6862] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.249848][ T6862] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.259311][ T6862] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.303078][ T6862] ------------[ cut here ]------------ [ 73.308677][ T6862] WARNING: CPU: 0 PID: 6862 at net/sched/sch_taprio.c:998 taprio_change+0x1ed0/0x2d40 [ 73.318294][ T6862] Kernel panic - not syncing: panic_on_warn set ... [ 73.324882][ T6862] CPU: 0 PID: 6862 Comm: syz-executor088 Not tainted 5.9.0-rc7-syzkaller #0 [ 73.333526][ T6862] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.343557][ T6862] Call Trace: [ 73.346831][ T6862] dump_stack+0x198/0x1fd [ 73.351153][ T6862] panic+0x382/0x7fb [ 73.355025][ T6862] ? __warn_printk+0xf3/0xf3 [ 73.359595][ T6862] ? printk+0xba/0xed [ 73.363573][ T6862] ? log_store.cold+0x16/0x16 [ 73.368229][ T6862] ? __warn.cold+0x5/0x4b [ 73.372535][ T6862] ? __warn+0xd6/0x1f2 [ 73.376611][ T6862] ? taprio_change+0x1ed0/0x2d40 [ 73.381543][ T6862] __warn.cold+0x20/0x4b [ 73.385787][ T6862] ? taprio_change+0x1ed0/0x2d40 [ 73.390708][ T6862] report_bug+0x1bd/0x210 [ 73.395032][ T6862] handle_bug+0x38/0x90 [ 73.399172][ T6862] exc_invalid_op+0x14/0x40 [ 73.403666][ T6862] asm_exc_invalid_op+0x12/0x20 [ 73.408496][ T6862] RIP: 0010:taprio_change+0x1ed0/0x2d40 [ 73.414030][ T6862] Code: 8b 44 24 18 41 bf ea ff ff ff 48 c7 00 c0 5e 49 89 e8 94 2a d9 fa 48 8b 7c 24 08 e8 6a d2 8b 01 e9 0a eb ff ff e8 80 2a d9 fa <0f> 0b 48 83 7c 24 18 00 74 2e e8 71 2a d9 fa 48 8b 54 24 18 48 b8 [ 73.433630][ T6862] RSP: 0018:ffffc900055e72b8 EFLAGS: 00010293 [ 73.439683][ T6862] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff869d0f60 [ 73.447655][ T6862] RDX: ffff8880a8db22c0 RSI: ffffffff869d1410 RDI: 0000000000000007 [ 73.455708][ T6862] RBP: 1638fa92c8fe343d R08: 0000000000000001 R09: ffffffff8d0c0aaf [ 73.463677][ T6862] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 73.471645][ T6862] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 [ 73.479621][ T6862] ? taprio_change+0x1a20/0x2d40 [ 73.484537][ T6862] ? taprio_change+0x1ed0/0x2d40 [ 73.489463][ T6862] ? taprio_change+0x1ed0/0x2d40 [ 73.494397][ T6862] ? lockdep_init_map_waits+0x26a/0x8a0 [ 73.499930][ T6862] ? fifo_init+0x34d/0x6c0 [ 73.504337][ T6862] ? taprio_peek_soft+0x5e0/0x5e0 [ 73.509362][ T6862] ? mutex_is_locked+0xe/0x40 [ 73.514039][ T6862] ? rtnl_is_locked+0x11/0x20 [ 73.518716][ T6862] ? qdisc_hash_add+0x21d/0x330 [ 73.523776][ T6862] taprio_init+0x52e/0x670 [ 73.528371][ T6862] ? taprio_change+0x2d40/0x2d40 [ 73.533304][ T6862] qdisc_create+0x4b6/0x12e0 [ 73.537903][ T6862] ? tc_get_qdisc+0xad0/0xad0 [ 73.542577][ T6862] ? __nla_parse+0x3d/0x4a [ 73.546989][ T6862] tc_modify_qdisc+0x4c8/0x1990 [ 73.551850][ T6862] ? rtnetlink_rcv_msg+0x3f9/0xad0 [ 73.556969][ T6862] ? qdisc_create+0x12e0/0x12e0 [ 73.561810][ T6862] ? lock_is_held_type+0xbb/0xf0 [ 73.566740][ T6862] ? lock_is_held_type+0xbb/0xf0 [ 73.571661][ T6862] ? qdisc_create+0x12e0/0x12e0 [ 73.576514][ T6862] rtnetlink_rcv_msg+0x44e/0xad0 [ 73.581472][ T6862] ? rtnetlink_put_metrics+0x510/0x510 [ 73.586933][ T6862] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 73.592213][ T6862] ? lock_is_held_type+0xbb/0xf0 [ 73.597412][ T6862] netlink_rcv_skb+0x15a/0x430 [ 73.602189][ T6862] ? rtnetlink_put_metrics+0x510/0x510 [ 73.607630][ T6862] ? netlink_ack+0xa10/0xa10 [ 73.612219][ T6862] netlink_unicast+0x533/0x7d0 [ 73.616996][ T6862] ? netlink_attachskb+0x810/0x810 [ 73.622102][ T6862] netlink_sendmsg+0x856/0xd90 [ 73.626862][ T6862] ? netlink_unicast+0x7d0/0x7d0 [ 73.631784][ T6862] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 73.637048][ T6862] ? netlink_unicast+0x7d0/0x7d0 [ 73.641978][ T6862] sock_sendmsg+0xcf/0x120 [ 73.646378][ T6862] ____sys_sendmsg+0x6e8/0x810 [ 73.651138][ T6862] ? kernel_sendmsg+0x50/0x50 [ 73.655804][ T6862] ? do_recvmmsg+0x6d0/0x6d0 [ 73.660404][ T6862] ? lock_is_held_type+0xbb/0xf0 [ 73.665338][ T6862] ? __lock_acquire+0xb92/0x5780 [ 73.670266][ T6862] ___sys_sendmsg+0xf3/0x170 [ 73.674836][ T6862] ? sendmsg_copy_msghdr+0x160/0x160 [ 73.680101][ T6862] ? lockdep_init_map_waits+0x26a/0x8a0 [ 73.685625][ T6862] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 73.691583][ T6862] ? percpu_counter_add_batch+0x126/0x180 [ 73.697286][ T6862] ? lock_is_held_type+0xbb/0xf0 [ 73.702214][ T6862] ? find_held_lock+0x2d/0x110 [ 73.706971][ T6862] ? __fd_install+0x1b4/0x600 [ 73.711641][ T6862] ? lock_downgrade+0x830/0x830 [ 73.716487][ T6862] ? __fget_light+0x215/0x280 [ 73.721188][ T6862] __sys_sendmsg+0xe5/0x1b0 [ 73.725686][ T6862] ? __sys_sendmsg_sock+0xb0/0xb0 [ 73.730753][ T6862] ? check_preemption_disabled+0x50/0x130 [ 73.736478][ T6862] ? syscall_enter_from_user_mode+0x1d/0x60 [ 73.742387][ T6862] do_syscall_64+0x2d/0x70 [ 73.746800][ T6862] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.752685][ T6862] RIP: 0033:0x4439a9 [ 73.756568][ T6862] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 db 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 73.776177][ T6862] RSP: 002b:00007ffe675fa408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.784583][ T6862] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004439a9 [ 73.792542][ T6862] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 73.800500][ T6862] RBP: 00007ffe675fa410 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 73.808476][ T6862] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffe675fa420 [ 73.816435][ T6862] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 73.825624][ T6862] Kernel Offset: disabled [ 73.830017][ T6862] Rebooting in 86400 seconds..