[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.220' (ECDSA) to the list of known hosts. syzkaller login: [ 57.922801][ T6841] IPVS: ftp: loaded support on port[0] = 21 [ 58.016321][ T6841] chnl_net:caif_netlink_parms(): no params data found [ 58.066662][ T6841] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.074330][ T6841] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.084190][ T6841] device bridge_slave_0 entered promiscuous mode [ 58.092997][ T6841] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.100067][ T6841] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.109022][ T6841] device bridge_slave_1 entered promiscuous mode [ 58.131325][ T6841] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.143249][ T6841] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.166127][ T6841] team0: Port device team_slave_0 added [ 58.173650][ T6841] team0: Port device team_slave_1 added [ 58.192072][ T6841] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.198990][ T6841] 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. [ 58.225910][ T6841] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.238838][ T6841] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.246903][ T6841] 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. [ 58.274054][ T6841] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.301829][ T6841] device hsr_slave_0 entered promiscuous mode [ 58.308721][ T6841] device hsr_slave_1 entered promiscuous mode [ 58.406991][ T6841] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.417271][ T6841] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.427016][ T6841] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.437243][ T6841] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.460825][ T6841] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.468068][ T6841] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.475825][ T6841] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.482952][ T6841] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.526550][ T6841] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.539134][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.551065][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.560384][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.568452][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 58.580868][ T6841] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.592819][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.601199][ T23] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.608307][ T23] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.622640][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.630904][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.637996][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.663076][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.671462][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.680498][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.688846][ T23] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.698565][ T6841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.707393][ T2538] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.726520][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.733927][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.749005][ T6841] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.768889][ T2538] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 58.789400][ T6841] device veth0_vlan entered promiscuous mode [ 58.797129][ T7047] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 58.806146][ T7047] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 58.814570][ T7047] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 58.826575][ T6841] device veth1_vlan entered promiscuous mode [ 58.834947][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.856806][ T2538] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.865288][ T2538] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.876288][ T6841] device veth0_macvtap entered promiscuous mode [ 58.886727][ T6841] device veth1_macvtap entered promiscuous mode [ 58.904647][ T6841] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.912731][ T2538] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.923978][ T2538] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.936103][ T6841] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.943933][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.955636][ T6841] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.966362][ T6841] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.975128][ T6841] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 58.983857][ T6841] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.020671][ T6841] ------------[ cut here ]------------ [ 59.026229][ T6841] WARNING: CPU: 1 PID: 6841 at net/sched/sch_taprio.c:998 taprio_change+0x1e12/0x2b60 [ 59.035797][ T6841] Kernel panic - not syncing: panic_on_warn set ... [ 59.042380][ T6841] CPU: 1 PID: 6841 Comm: syz-executor809 Not tainted 5.9.0-rc3-syzkaller #0 [ 59.051034][ T6841] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.061069][ T6841] Call Trace: [ 59.064358][ T6841] dump_stack+0x198/0x1fd [ 59.068681][ T6841] panic+0x347/0x7c0 [ 59.072551][ T6841] ? __warn_printk+0xf3/0xf3 [ 59.077120][ T6841] ? printk+0xba/0xed [ 59.081072][ T6841] ? log_store.cold+0x16/0x16 [ 59.085724][ T6841] ? __warn.cold+0x5/0x46 [ 59.090026][ T6841] ? __warn+0xd6/0x1f2 [ 59.094070][ T6841] ? taprio_change+0x1e12/0x2b60 [ 59.098979][ T6841] __warn.cold+0x20/0x46 [ 59.103210][ T6841] ? taprio_change+0x1e12/0x2b60 [ 59.108121][ T6841] report_bug+0x1bd/0x210 [ 59.112427][ T6841] handle_bug+0x38/0x90 [ 59.116660][ T6841] exc_invalid_op+0x14/0x40 [ 59.121137][ T6841] asm_exc_invalid_op+0x12/0x20 [ 59.125962][ T6841] RIP: 0010:taprio_change+0x1e12/0x2b60 [ 59.131494][ T6841] Code: 8b 44 24 08 41 bf ea ff ff ff 48 c7 00 c0 af 03 89 e8 52 9b 06 fb 48 8b 7c 24 10 e8 28 63 89 01 e9 6b eb ff ff e8 3e 9b 06 fb <0f> 0b 48 83 7c 24 08 00 74 2e e8 2f 9b 06 fb 48 8b 54 24 08 48 b8 [ 59.151084][ T6841] RSP: 0018:ffffc9000515f2b8 EFLAGS: 00010293 [ 59.157162][ T6841] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff866dab09 [ 59.165125][ T6841] RDX: ffff8880a643a240 RSI: ffffffff866dafc2 RDI: 0000000000000007 [ 59.173075][ T6841] RBP: 16341fa0ca8d0652 R08: 0000000000000001 R09: ffffffff8c5f4aa7 [ 59.181026][ T6841] R10: 0000000000000000 R11: 0000000000086848 R12: 0000000000000000 [ 59.188976][ T6841] R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 [ 59.196938][ T6841] ? taprio_change+0x1959/0x2b60 [ 59.201852][ T6841] ? taprio_change+0x1e12/0x2b60 [ 59.206767][ T6841] ? taprio_change+0x1e12/0x2b60 [ 59.211688][ T6841] ? lockdep_init_map_waits+0x26a/0x8a0 [ 59.217246][ T6841] ? fifo_init+0x34d/0x6c0 [ 59.221638][ T6841] ? taprio_peek_soft+0x5e0/0x5e0 [ 59.226641][ T6841] ? mutex_is_locked+0xe/0x40 [ 59.232289][ T6841] ? rtnl_is_locked+0x11/0x20 [ 59.236939][ T6841] ? qdisc_hash_add+0x228/0x350 [ 59.241882][ T6841] taprio_init+0x52e/0x670 [ 59.246341][ T6841] ? taprio_change+0x2b60/0x2b60 [ 59.251263][ T6841] qdisc_create+0x4b6/0x12e0 [ 59.255844][ T6841] ? tc_get_qdisc+0xad0/0xad0 [ 59.260504][ T6841] ? __nla_parse+0x3d/0x4a [ 59.264951][ T6841] tc_modify_qdisc+0x4c8/0x1990 [ 59.269821][ T6841] ? rtnetlink_rcv_msg+0x3f9/0xad0 [ 59.274909][ T6841] ? qdisc_create+0x12e0/0x12e0 [ 59.279732][ T6841] ? lock_is_held_type+0xbb/0xf0 [ 59.284653][ T6841] ? lock_is_held_type+0xbb/0xf0 [ 59.289598][ T6841] ? qdisc_create+0x12e0/0x12e0 [ 59.294423][ T6841] rtnetlink_rcv_msg+0x44e/0xad0 [ 59.299354][ T6841] ? rtnetlink_put_metrics+0x510/0x510 [ 59.304800][ T6841] ? lock_acquire+0x1f3/0xae0 [ 59.309469][ T6841] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 59.314838][ T6841] netlink_rcv_skb+0x15a/0x430 [ 59.319583][ T6841] ? rtnetlink_put_metrics+0x510/0x510 [ 59.325022][ T6841] ? netlink_ack+0xa10/0xa10 [ 59.329599][ T6841] netlink_unicast+0x533/0x7d0 [ 59.334464][ T6841] ? netlink_attachskb+0x810/0x810 [ 59.339555][ T6841] ? __phys_addr_symbol+0x2c/0x70 [ 59.344556][ T6841] ? __check_object_size+0x171/0x3e4 [ 59.349823][ T6841] netlink_sendmsg+0x856/0xd90 [ 59.354580][ T6841] ? netlink_unicast+0x7d0/0x7d0 [ 59.359505][ T6841] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 59.364770][ T6841] ? netlink_unicast+0x7d0/0x7d0 [ 59.369684][ T6841] sock_sendmsg+0xcf/0x120 [ 59.374081][ T6841] ____sys_sendmsg+0x6e8/0x810 [ 59.378823][ T6841] ? kernel_sendmsg+0x50/0x50 [ 59.383475][ T6841] ? do_recvmmsg+0x6d0/0x6d0 [ 59.388042][ T6841] ? lock_is_held_type+0xbb/0xf0 [ 59.392956][ T6841] ? __lock_acquire+0xb5e/0x5570 [ 59.397900][ T6841] ___sys_sendmsg+0xf3/0x170 [ 59.402467][ T6841] ? sendmsg_copy_msghdr+0x160/0x160 [ 59.407726][ T6841] ? lockdep_init_map_waits+0x26a/0x8a0 [ 59.413247][ T6841] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 59.419221][ T6841] ? percpu_counter_add_batch+0x126/0x180 [ 59.424918][ T6841] ? lock_is_held_type+0xbb/0xf0 [ 59.429827][ T6841] ? find_held_lock+0x2d/0x110 [ 59.434580][ T6841] ? __fd_install+0x1b4/0x600 [ 59.439230][ T6841] ? lock_downgrade+0x830/0x830 [ 59.444054][ T6841] ? __fget_light+0x215/0x280 [ 59.448727][ T6841] __sys_sendmsg+0xe5/0x1b0 [ 59.453243][ T6841] ? __sys_sendmsg_sock+0xb0/0xb0 [ 59.458249][ T6841] ? syscall_enter_from_user_mode+0x20/0x290 [ 59.464221][ T6841] ? lockdep_hardirqs_on+0x53/0x100 [ 59.469395][ T6841] do_syscall_64+0x2d/0x70 [ 59.473786][ T6841] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.479649][ T6841] RIP: 0033:0x443839 [ 59.483521][ T6841] 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 fb 0f fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.503097][ T6841] RSP: 002b:00007ffe06fb51e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.511483][ T6841] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443839 [ 59.519536][ T6841] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 59.527480][ T6841] RBP: 00007ffe06fb51f0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 59.535685][ T6841] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffe06fb5200 [ 59.543630][ T6841] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 59.553120][ T6841] Kernel Offset: disabled [ 59.557495][ T6841] Rebooting in 86400 seconds..