[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.0.5' (ECDSA) to the list of known hosts. syzkaller login: [ 62.379258][ T6889] IPVS: ftp: loaded support on port[0] = 21 [ 62.518777][ T6889] chnl_net:caif_netlink_parms(): no params data found [ 62.571509][ T6889] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.579001][ T6889] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.588718][ T6889] device bridge_slave_0 entered promiscuous mode [ 62.598350][ T6889] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.605456][ T6889] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.613960][ T6889] device bridge_slave_1 entered promiscuous mode [ 62.633503][ T6889] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.644302][ T6889] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.667964][ T6889] team0: Port device team_slave_0 added [ 62.675230][ T6889] team0: Port device team_slave_1 added [ 62.692841][ T6889] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 62.699915][ T6889] 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. [ 62.727025][ T6889] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 62.739787][ T6889] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 62.747210][ T6889] 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. [ 62.773613][ T6889] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 62.800761][ T6889] device hsr_slave_0 entered promiscuous mode [ 62.807464][ T6889] device hsr_slave_1 entered promiscuous mode [ 62.902636][ T6889] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.912204][ T6889] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.928313][ T6889] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.940906][ T6889] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.966808][ T6889] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.973924][ T6889] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.981691][ T6889] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.988815][ T6889] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.031469][ T6889] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.047392][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.058970][ T3107] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.066960][ T3107] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.074780][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.088028][ T6889] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.099704][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.108073][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.115102][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.136550][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.145063][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.152202][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.161682][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.180750][ T6889] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 63.191801][ T6889] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.206574][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.214753][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.224344][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.234862][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.244749][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.262190][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.270221][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.283317][ T6889] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.303365][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 63.323617][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 63.332962][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.341652][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.352245][ T6889] device veth0_vlan entered promiscuous mode [ 63.364250][ T6889] device veth1_vlan entered promiscuous mode [ 63.387500][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.396293][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.404319][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.415288][ T6889] device veth0_macvtap entered promiscuous mode [ 63.426825][ T6889] device veth1_macvtap entered promiscuous mode [ 63.444300][ T6889] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.452397][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.464414][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.476407][ T6889] batman_adv: batadv0: Interface activated: batadv_slave_1 executing program [ 63.487127][ T6889] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.496012][ T6889] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.504682][ T6889] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.513516][ T6889] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 63.524556][ T7109] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program executing program executing program [ 63.617856][ T7128] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 63.629580][ T7128] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 63.637964][ T7128] CPU: 1 PID: 7128 Comm: syz-executor464 Not tainted 5.9.0-rc1-syzkaller #0 [ 63.646638][ T7128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.656678][ T7128] RIP: 0010:fq_codel_enqueue+0x8a3/0x10c0 [ 63.662368][ T7128] Code: 03 25 0b fb 45 39 ec 0f 83 cb 00 00 00 e8 f5 28 0b fb 48 8b 44 24 10 80 38 00 0f 85 32 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 06 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 63.681950][ T7128] RSP: 0018:ffffc90006617680 EFLAGS: 00010246 [ 63.687989][ T7128] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8669157b [ 63.695936][ T7128] RDX: 0000000000000000 RSI: ffffffff8669161b RDI: 0000000000000004 [ 63.703880][ T7128] RBP: ffffc90006617820 R08: 0000000000000001 R09: ffffffff8c5f8aaf [ 63.711820][ T7128] R10: 0000000000000400 R11: 0000000000087c68 R12: 0000000000000400 [ 63.719763][ T7128] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888085280000 [ 63.727719][ T7128] FS: 00007fa7cb0b8700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 63.736622][ T7128] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.743176][ T7128] CR2: 00000000200001c0 CR3: 000000009197e000 CR4: 00000000001506e0 [ 63.751119][ T7128] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.759060][ T7128] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.766999][ T7128] Call Trace: [ 63.770270][ T7128] ? do_raw_spin_lock+0x120/0x2b0 [ 63.775265][ T7128] ? INET_ECN_set_ce+0x780/0x780 [ 63.780187][ T7128] ? rwlock_bug.part.0+0x90/0x90 [ 63.785096][ T7128] __dev_queue_xmit+0x1878/0x2d60 [ 63.790105][ T7128] ? do_raw_spin_unlock+0x171/0x230 [ 63.795270][ T7128] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 63.800527][ T7128] ? memcpy+0x39/0x60 [ 63.804476][ T7128] ? memcpy+0x39/0x60 [ 63.808431][ T7128] ? __skb_clone+0x586/0x770 [ 63.813007][ T7128] netlink_deliver_tap+0x92e/0xb70 [ 63.818105][ T7128] netlink_unicast+0x5e5/0x7d0 [ 63.822850][ T7128] ? netlink_attachskb+0x810/0x810 [ 63.827933][ T7128] ? _copy_from_iter_full+0x247/0x890 [ 63.833276][ T7128] ? memset+0x20/0x40 [ 63.837229][ T7128] ? __check_object_size+0x30/0x3e4 [ 63.842399][ T7128] netlink_sendmsg+0x856/0xd90 [ 63.847134][ T7128] ? netlink_unicast+0x7d0/0x7d0 [ 63.852045][ T7128] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 63.857312][ T7128] ? netlink_unicast+0x7d0/0x7d0 [ 63.862221][ T7128] sock_sendmsg+0xcf/0x120 [ 63.866616][ T7128] ____sys_sendmsg+0x6e8/0x810 [ 63.871361][ T7128] ? kernel_sendmsg+0x50/0x50 [ 63.876009][ T7128] ? do_recvmmsg+0x6d0/0x6d0 [ 63.880572][ T7128] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 63.886523][ T7128] ___sys_sendmsg+0xf3/0x170 [ 63.891100][ T7128] ? sendmsg_copy_msghdr+0x160/0x160 [ 63.896368][ T7128] ? __fget_files+0x272/0x400 [ 63.901018][ T7128] ? lock_downgrade+0x830/0x830 [ 63.905853][ T7128] ? __fget_files+0x294/0x400 [ 63.910514][ T7128] ? __fget_light+0xea/0x280 [ 63.915086][ T7128] __sys_sendmsg+0xe5/0x1b0 [ 63.919558][ T7128] ? __sys_sendmsg_sock+0xb0/0xb0 [ 63.924576][ T7128] ? trace_hardirqs_on+0x5f/0x220 [ 63.929579][ T7128] ? lockdep_hardirqs_on+0x76/0xf0 [ 63.934674][ T7128] do_syscall_64+0x2d/0x70 [ 63.939073][ T7128] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.944935][ T7128] RIP: 0033:0x44a689 [ 63.948805][ T7128] Code: e8 3c 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 0b 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.968392][ T7128] RSP: 002b:00007fa7cb0b7db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 63.976784][ T7128] RAX: ffffffffffffffda RBX: 00000000006e0c58 RCX: 000000000044a689 [ 63.984726][ T7128] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 63.992669][ T7128] RBP: 00000000006e0c50 R08: 00007fa7cb0b8700 R09: 0000000000000000 [ 64.000625][ T7128] R10: 00007fa7cb0b8700 R11: 0000000000000246 R12: 00000000006e0c5c [ 64.008568][ T7128] R13: 00007ffe181ede1f R14: 00007fa7cb0b89c0 R15: 0000000000000001 [ 64.016513][ T7128] Modules linked in: [ 64.020437][ T7128] ---[ end trace 9975ec476a3b8e1d ]--- [ 64.025903][ T7128] RIP: 0010:fq_codel_enqueue+0x8a3/0x10c0 [ 64.031594][ T7128] Code: 03 25 0b fb 45 39 ec 0f 83 cb 00 00 00 e8 f5 28 0b fb 48 8b 44 24 10 80 38 00 0f 85 32 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 06 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48 [ 64.051198][ T7128] RSP: 0018:ffffc90006617680 EFLAGS: 00010246 [ 64.057252][ T7128] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8669157b [ 64.065216][ T7128] RDX: 0000000000000000 RSI: ffffffff8669161b RDI: 0000000000000004 [ 64.073201][ T7128] RBP: ffffc90006617820 R08: 0000000000000001 R09: ffffffff8c5f8aaf [ 64.081161][ T7128] R10: 0000000000000400 R11: 0000000000087c68 R12: 0000000000000400 [ 64.089121][ T7128] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888085280000 [ 64.097082][ T7128] FS: 00007fa7cb0b8700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 64.105998][ T7128] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.112561][ T7128] CR2: 00000000200001c0 CR3: 000000009197e000 CR4: 00000000001506e0 [ 64.120529][ T7128] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.128500][ T7128] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.136459][ T7128] Kernel panic - not syncing: Fatal exception in interrupt [ 64.144644][ T7128] Kernel Offset: disabled [ 64.148963][ T7128] Rebooting in 86400 seconds..