[ OK ] Reached target Basic System. [ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... Starting Permit User Sessions... Starting OpenBSD Secure Shell server... Starting System Logging Service... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ 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 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... 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 '10.128.0.112' (ECDSA) to the list of known hosts. syzkaller login: [ 68.770983][ T28] audit: type=1400 audit(1598715731.903:8): avc: denied { execmem } for pid=6864 comm="syz-executor834" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 68.791501][ T6865] IPVS: ftp: loaded support on port[0] = 21 [ 68.886631][ T6865] chnl_net:caif_netlink_parms(): no params data found [ 68.940587][ T6865] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.948936][ T6865] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.957336][ T6865] device bridge_slave_0 entered promiscuous mode [ 68.966724][ T6865] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.973969][ T6865] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.982318][ T6865] device bridge_slave_1 entered promiscuous mode [ 69.003699][ T6865] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.014955][ T6865] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.038337][ T6865] team0: Port device team_slave_0 added [ 69.046541][ T6865] team0: Port device team_slave_1 added [ 69.067277][ T6865] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.074505][ T6865] 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. [ 69.100809][ T6865] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.113681][ T6865] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.120628][ T6865] 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. [ 69.147542][ T6865] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.175160][ T6865] device hsr_slave_0 entered promiscuous mode [ 69.182034][ T6865] device hsr_slave_1 entered promiscuous mode [ 69.286998][ T6865] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.296941][ T6865] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.307193][ T6865] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.317273][ T6865] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.344683][ T6865] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.351905][ T6865] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.359616][ T6865] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.366811][ T6865] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.414376][ T6865] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.427328][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.438309][ T2656] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.447255][ T2656] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.455475][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.469281][ T6865] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.481767][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.490351][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.497472][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.523799][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.532856][ T2656] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.539889][ T2656] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.548824][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.557514][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.567102][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.581225][ T3006] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.589709][ T3006] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.600524][ T6865] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.620004][ T3006] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.629055][ T3006] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.643039][ T6865] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.662668][ T3006] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.683009][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.691327][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.700814][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.712174][ T6865] device veth0_vlan entered promiscuous mode [ 69.725370][ T6865] device veth1_vlan entered promiscuous mode [ 69.747227][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.756298][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.765019][ T2656] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.775768][ T6865] device veth0_macvtap entered promiscuous mode [ 69.787424][ T6865] device veth1_macvtap entered promiscuous mode [ 69.806445][ T6865] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 69.815912][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 69.826792][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 69.839505][ T6865] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 69.847548][ T7071] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program [ 69.859486][ T6865] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.868584][ T6865] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.877932][ T6865] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.887039][ T6865] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 70.003473][ T7090] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 70.015294][ T7090] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 70.023689][ T7090] CPU: 0 PID: 7090 Comm: syz-executor834 Not tainted 5.9.0-rc2-syzkaller #0 [ 70.032358][ T7090] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.042961][ T7090] RIP: 0010:fq_codel_enqueue+0x8a3/0x10c0 [ 70.048671][ T7090] Code: 53 17 0b fb 45 39 ec 0f 83 cb 00 00 00 e8 45 1b 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 [ 70.068440][ T7090] RSP: 0018:ffffc90006527680 EFLAGS: 00010246 [ 70.074581][ T7090] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8669232b [ 70.082569][ T7090] RDX: 0000000000000000 RSI: ffffffff866923cb RDI: 0000000000000004 [ 70.090527][ T7090] RBP: ffffc90006527820 R08: 0000000000000001 R09: ffffffff8c5f3aaf [ 70.098659][ T7090] R10: 0000000000000400 R11: 00000000000a90d8 R12: 0000000000000400 [ 70.106821][ T7090] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888082f40000 [ 70.114890][ T7090] FS: 0000000000cfa880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 70.123941][ T7090] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.130776][ T7090] CR2: 00000000200001c0 CR3: 0000000086f75000 CR4: 00000000001506f0 [ 70.138759][ T7090] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.146804][ T7090] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.154759][ T7090] Call Trace: [ 70.158039][ T7090] ? do_raw_spin_lock+0x120/0x2b0 [ 70.163064][ T7090] ? INET_ECN_set_ce+0x780/0x780 [ 70.167992][ T7090] ? rwlock_bug.part.0+0x90/0x90 [ 70.172913][ T7090] __dev_queue_xmit+0x1878/0x2d60 [ 70.178054][ T7090] ? lock_acquire+0x1f1/0xad0 [ 70.182719][ T7090] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 70.188003][ T7090] ? memcpy+0x39/0x60 [ 70.191977][ T7090] ? memcpy+0x39/0x60 [ 70.195949][ T7090] ? __skb_clone+0x586/0x770 [ 70.200704][ T7090] netlink_deliver_tap+0x92e/0xb70 [ 70.205823][ T7090] netlink_unicast+0x5e5/0x7d0 [ 70.210580][ T7090] ? netlink_attachskb+0x810/0x810 [ 70.215693][ T7090] ? _copy_from_iter_full+0x247/0x890 [ 70.221052][ T7090] netlink_sendmsg+0x856/0xd90 [ 70.226344][ T7090] ? netlink_unicast+0x7d0/0x7d0 [ 70.231270][ T7090] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 70.236566][ T7090] ? netlink_unicast+0x7d0/0x7d0 [ 70.241939][ T7090] sock_sendmsg+0xcf/0x120 [ 70.246336][ T7090] ____sys_sendmsg+0x6e8/0x810 [ 70.251177][ T7090] ? kernel_sendmsg+0x50/0x50 [ 70.255863][ T7090] ? do_recvmmsg+0x6d0/0x6d0 [ 70.260445][ T7090] ? lock_acquire+0x1f1/0xad0 [ 70.265105][ T7090] ? do_huge_pmd_anonymous_page+0x120d/0x2230 [ 70.271583][ T7090] ? find_held_lock+0x2d/0x110 [ 70.276340][ T7090] ___sys_sendmsg+0xf3/0x170 [ 70.280921][ T7090] ? sendmsg_copy_msghdr+0x160/0x160 [ 70.286634][ T7090] ? do_huge_pmd_anonymous_page+0x1b94/0x2230 [ 70.292693][ T7090] ? do_huge_pmd_anonymous_page+0x8ef/0x2230 [ 70.298668][ T7090] ? handle_mm_fault+0xb78/0x4590 [ 70.303789][ T7090] ? find_held_lock+0x2d/0x110 [ 70.308549][ T7090] ? __fget_light+0x215/0x280 [ 70.317373][ T7090] __sys_sendmsg+0xe5/0x1b0 [ 70.321909][ T7090] ? __sys_sendmsg_sock+0xb0/0xb0 [ 70.327706][ T7090] ? trace_hardirqs_on+0x5f/0x220 [ 70.332728][ T7090] ? lockdep_hardirqs_on+0x76/0xf0 [ 70.338272][ T7090] do_syscall_64+0x2d/0x70 [ 70.342789][ T7090] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.348686][ T7090] RIP: 0033:0x443ed9 [ 70.353084][ T7090] Code: e8 8c 07 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 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 70.372784][ T7090] RSP: 002b:00007fff28ff7698 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 70.381196][ T7090] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443ed9 [ 70.389347][ T7090] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 70.397325][ T7090] RBP: 00007fff28ff76a0 R08: 0000000000000000 R09: 0000000000000000 [ 70.405369][ T7090] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000011177 [ 70.413786][ T7090] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 70.422093][ T7090] Modules linked in: [ 70.426048][ T7090] ---[ end trace b050e90c49828cf4 ]--- [ 70.431536][ T7090] RIP: 0010:fq_codel_enqueue+0x8a3/0x10c0 [ 70.437253][ T7090] Code: 53 17 0b fb 45 39 ec 0f 83 cb 00 00 00 e8 45 1b 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 [ 70.457161][ T7090] RSP: 0018:ffffc90006527680 EFLAGS: 00010246 [ 70.463282][ T7090] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8669232b [ 70.471260][ T7090] RDX: 0000000000000000 RSI: ffffffff866923cb RDI: 0000000000000004 [ 70.479276][ T7090] RBP: ffffc90006527820 R08: 0000000000000001 R09: ffffffff8c5f3aaf [ 70.487281][ T7090] R10: 0000000000000400 R11: 00000000000a90d8 R12: 0000000000000400 [ 70.495283][ T7090] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888082f40000 [ 70.503317][ T7090] FS: 0000000000cfa880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 70.512289][ T7090] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.518872][ T7090] CR2: 00000000200001c0 CR3: 0000000086f75000 CR4: 00000000001506f0 [ 70.526897][ T7090] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.535016][ T7090] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.543120][ T7090] Kernel panic - not syncing: Fatal exception in interrupt [ 70.551645][ T7090] Kernel Offset: disabled [ 70.555965][ T7090] Rebooting in 86400 seconds..