Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.232' (ECDSA) to the list of known hosts. syzkaller login: [ 62.258415][ T8504] IPVS: ftp: loaded support on port[0] = 21 [ 62.420559][ T8504] chnl_net:caif_netlink_parms(): no params data found [ 62.473072][ T8504] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.481732][ T8504] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.491094][ T8504] device bridge_slave_0 entered promiscuous mode [ 62.500307][ T8504] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.509225][ T8504] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.517465][ T8504] device bridge_slave_1 entered promiscuous mode [ 62.538005][ T8504] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.549223][ T8504] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.572084][ T8504] team0: Port device team_slave_0 added [ 62.579825][ T8504] team0: Port device team_slave_1 added [ 62.597798][ T8504] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 62.604918][ T8504] 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. [ 62.631633][ T8504] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 62.645916][ T8504] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 62.652863][ T8504] 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. [ 62.678969][ T8504] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 62.705531][ T8504] device hsr_slave_0 entered promiscuous mode [ 62.712161][ T8504] device hsr_slave_1 entered promiscuous mode [ 62.810726][ T8504] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.820773][ T8504] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.830957][ T8504] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.841430][ T8504] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.865780][ T8504] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.873011][ T8504] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.881198][ T8504] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.888376][ T8504] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.936381][ T8504] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.950565][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.961822][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.971378][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.979841][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 62.993246][ T8504] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.004048][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.015088][ T34] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.022191][ T34] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.036698][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.045302][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.052389][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.071972][ T8723] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.081262][ T8723] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.095242][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.112678][ T8504] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 63.123637][ T8504] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.138017][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.148783][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.167096][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.181905][ T8504] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.189627][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.197312][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.217307][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 63.236630][ T8418] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 63.245976][ T8418] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.253739][ T8418] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.263949][ T8504] device veth0_vlan entered promiscuous mode [ 63.277805][ T8504] device veth1_vlan entered promiscuous mode [ 63.299927][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.308676][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.318139][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.329452][ T8504] device veth0_macvtap entered promiscuous mode [ 63.340381][ T8504] device veth1_macvtap entered promiscuous mode [ 63.358086][ T8504] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.367728][ T8418] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.378524][ T8418] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.390862][ T8504] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 63.399460][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 63.410973][ T8504] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.421137][ T8504] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.429964][ T8504] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.438750][ T8504] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program executing program executing program executing program [ 63.536154][ T8741] divide error: 0000 [#1] PREEMPT SMP KASAN [ 63.542063][ T8741] CPU: 0 PID: 8741 Comm: syz-executor278 Not tainted 5.10.0-rc7-syzkaller #0 [ 63.550882][ T8741] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.560941][ T8741] RIP: 0010:netem_enqueue+0x154e/0x3560 [ 63.566460][ T8741] Code: 74 1f 4c 89 44 24 20 89 4c 24 18 89 44 24 10 e8 b8 33 94 fa 4c 8b 44 24 20 8b 4c 24 18 8b 44 24 10 48 8b 34 24 31 d2 2b 4e 74 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d6 4c 89 f1 48 c1 e9 03 [ 63.586039][ T8741] RSP: 0018:ffffc900017cf578 EFLAGS: 00010246 [ 63.592204][ T8741] RAX: 000000000d58c9f4 RBX: 0000000000000002 RCX: 0000000000000000 [ 63.600160][ T8741] RDX: 0000000000000000 RSI: ffff88801b1aea00 RDI: ffff88801b1aea74 [ 63.608118][ T8741] RBP: ffff88802a3c3000 R08: ffff88801b1aeac8 R09: ffffffff8cecae4f [ 63.616070][ T8741] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 63.624019][ T8741] R13: ffff88802a3c3330 R14: ffff888022a7fc00 R15: 0000000000000000 [ 63.631995][ T8741] FS: 00007f7467e70700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 63.640897][ T8741] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.647457][ T8741] CR2: 00000000200000c0 CR3: 0000000016bde000 CR4: 00000000001506f0 [ 63.655413][ T8741] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.663371][ T8741] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.671329][ T8741] Call Trace: [ 63.674606][ T8741] ? memcpy+0x39/0x60 [ 63.678567][ T8741] ? netem_dump+0x1120/0x1120 [ 63.683232][ T8741] ? __skb_clone+0x586/0x770 [ 63.687805][ T8741] netem_enqueue+0x2194/0x3560 [ 63.692553][ T8741] ? lock_release+0x710/0x710 [ 63.697210][ T8741] ? do_raw_spin_lock+0x120/0x2b0 [ 63.702209][ T8741] ? netem_dump+0x1120/0x1120 [ 63.706858][ T8741] ? rwlock_bug.part.0+0x90/0x90 [ 63.711773][ T8741] __dev_queue_xmit+0x18dd/0x2da0 [ 63.716774][ T8741] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 63.722030][ T8741] ? memcpy+0x39/0x60 [ 63.725986][ T8741] ? memcpy+0x39/0x60 [ 63.729998][ T8741] ? __skb_clone+0x586/0x770 [ 63.734567][ T8741] netlink_deliver_tap+0x92e/0xb70 [ 63.739666][ T8741] netlink_unicast+0x5e5/0x7d0 [ 63.744412][ T8741] ? netlink_attachskb+0x810/0x810 [ 63.749504][ T8741] ? __check_object_size+0x30/0x3f0 [ 63.754774][ T8741] netlink_sendmsg+0x856/0xd90 [ 63.759605][ T8741] ? netlink_unicast+0x7d0/0x7d0 [ 63.764522][ T8741] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 63.769780][ T8741] ? netlink_unicast+0x7d0/0x7d0 [ 63.774697][ T8741] sock_sendmsg+0xcf/0x120 [ 63.779123][ T8741] ____sys_sendmsg+0x6e8/0x810 [ 63.783876][ T8741] ? kernel_sendmsg+0x50/0x50 [ 63.788535][ T8741] ? do_recvmmsg+0x6c0/0x6c0 [ 63.793099][ T8741] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 63.799053][ T8741] ___sys_sendmsg+0xf3/0x170 [ 63.803614][ T8741] ? sendmsg_copy_msghdr+0x160/0x160 [ 63.808882][ T8741] ? __fget_files+0x272/0x400 [ 63.813529][ T8741] ? lock_downgrade+0x6d0/0x6d0 [ 63.818350][ T8741] ? percpu_counter_add_batch+0xbd/0x180 [ 63.823969][ T8741] ? __fget_files+0x294/0x400 [ 63.828618][ T8741] ? __fget_light+0xea/0x280 [ 63.833196][ T8741] __sys_sendmsg+0xe5/0x1b0 [ 63.837669][ T8741] ? __sys_sendmsg_sock+0xb0/0xb0 [ 63.842686][ T8741] ? __do_sys_futex+0x2a2/0x470 [ 63.847532][ T8741] ? syscall_enter_from_user_mode+0x1d/0x50 [ 63.853459][ T8741] do_syscall_64+0x2d/0x70 [ 63.857899][ T8741] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.863770][ T8741] RIP: 0033:0x44a299 [ 63.867643][ T8741] Code: e8 cc 0c 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 fb 03 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.887310][ T8741] RSP: 002b:00007f7467e6fd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.895697][ T8741] RAX: ffffffffffffffda RBX: 00000000006dfc48 RCX: 000000000044a299 [ 63.903645][ T8741] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004 [ 63.911599][ T8741] RBP: 00000000006dfc40 R08: 0000000000000000 R09: 0000000000000000 [ 63.919543][ T8741] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dfc4c [ 63.927585][ T8741] R13: 0000000000000000 R14: 0000000000000000 R15: 0e0b002400000058 [ 63.935538][ T8741] Modules linked in: [ 63.939473][ T8741] ---[ end trace 84734ef5aec9e515 ]--- [ 63.944933][ T8741] RIP: 0010:netem_enqueue+0x154e/0x3560 [ 63.950455][ T8741] Code: 74 1f 4c 89 44 24 20 89 4c 24 18 89 44 24 10 e8 b8 33 94 fa 4c 8b 44 24 20 8b 4c 24 18 8b 44 24 10 48 8b 34 24 31 d2 2b 4e 74 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d6 4c 89 f1 48 c1 e9 03 [ 63.970047][ T8741] RSP: 0018:ffffc900017cf578 EFLAGS: 00010246 [ 63.976100][ T8741] RAX: 000000000d58c9f4 RBX: 0000000000000002 RCX: 0000000000000000 [ 63.984043][ T8741] RDX: 0000000000000000 RSI: ffff88801b1aea00 RDI: ffff88801b1aea74 [ 63.992003][ T8741] RBP: ffff88802a3c3000 R08: ffff88801b1aeac8 R09: ffffffff8cecae4f [ 63.999972][ T8741] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 64.008215][ T8741] R13: ffff88802a3c3330 R14: ffff888022a7fc00 R15: 0000000000000000 [ 64.016175][ T8741] FS: 00007f7467e70700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 64.025094][ T8741] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.031740][ T8741] CR2: 00000000200000c0 CR3: 0000000016bde000 CR4: 00000000001506f0 [ 64.039701][ T8741] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.047661][ T8741] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.055624][ T8741] Kernel panic - not syncing: Fatal exception in interrupt [ 64.063401][ T8741] Kernel Offset: disabled [ 64.067711][ T8741] Rebooting in 86400 seconds..