[ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.60' (ECDSA) to the list of known hosts. 2021/05/07 00:12:37 fuzzer started 2021/05/07 00:12:37 connecting to host at 10.128.0.169:45341 2021/05/07 00:12:37 checking machine... 2021/05/07 00:12:37 checking revisions... 2021/05/07 00:12:37 testing simple program... syzkaller login: [ 76.453126][ T8419] chnl_net:caif_netlink_parms(): no params data found [ 76.504314][ T8419] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.512912][ T8419] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.521873][ T8419] device bridge_slave_0 entered promiscuous mode [ 76.531657][ T8419] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.540158][ T8419] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.549161][ T8419] device bridge_slave_1 entered promiscuous mode [ 76.570600][ T8419] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.582358][ T8419] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.607404][ T8419] team0: Port device team_slave_0 added [ 76.615660][ T8419] team0: Port device team_slave_1 added [ 76.634203][ T8419] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.641824][ T8419] 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. [ 76.669423][ T8419] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.683489][ T8419] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.691731][ T8419] 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. [ 76.720434][ T8419] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.749967][ T8419] device hsr_slave_0 entered promiscuous mode [ 76.757402][ T8419] device hsr_slave_1 entered promiscuous mode [ 76.865138][ T8419] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.881489][ T8419] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.891509][ T8419] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.903080][ T8419] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.930172][ T8419] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.938025][ T8419] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.947241][ T8419] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.954901][ T8419] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.003441][ T8419] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.021751][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.034886][ T8108] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.044335][ T8108] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.053431][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.070092][ T8419] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.081910][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.091834][ T8108] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.099542][ T8108] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.116197][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.127533][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.134826][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.159940][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.173650][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.190649][ T8419] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 77.204098][ T8419] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.221823][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.232992][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.243046][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.253596][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.276102][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.284092][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.295082][ T8419] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.317622][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.339203][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.350960][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.359711][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.370066][ T8419] device veth0_vlan entered promiscuous mode [ 77.384677][ T8419] device veth1_vlan entered promiscuous mode [ 77.408251][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.419472][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.429666][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.442625][ T8419] device veth0_macvtap entered promiscuous mode [ 77.453711][ T8419] device veth1_macvtap entered promiscuous mode [ 77.468388][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 77.488171][ T8419] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.497364][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.506921][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.520821][ T8419] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.530247][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.541210][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.553837][ T8419] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.564174][ T8419] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.573890][ T8419] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.583352][ T8419] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.673014][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.707612][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 77.719892][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.739260][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.750885][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.763157][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/07 00:12:40 building call list... [ 78.537486][ T70] ------------[ cut here ]------------ [ 78.549427][ T70] hook not found, pf 3 num 0 [ 78.550054][ T70] WARNING: CPU: 0 PID: 70 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 78.579505][ T70] Modules linked in: [ 78.583455][ T70] CPU: 0 PID: 70 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 78.594621][ T70] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.606583][ T70] Workqueue: netns cleanup_net [ 78.611735][ T70] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.619647][ T70] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 11 04 00 00 8b 53 1c 89 ee 48 c7 c7 c0 d8 6d 8a e8 d0 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 e9 16 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.642115][ T70] RSP: 0018:ffffc90000fbfbc0 EFLAGS: 00010286 [ 78.652393][ T70] RAX: 0000000000000000 RBX: ffff88814a19dc00 RCX: 0000000000000000 [ 78.662989][ T70] RDX: ffff888014973880 RSI: ffffffff815c8ba5 RDI: fffff520001f7f6a [ 78.672479][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.682205][ T70] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801e0c0f20 [ 78.692026][ T70] R13: 0000000000000000 R14: ffff88802389b880 R15: 0000000000000001 [ 78.701721][ T70] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 78.714823][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.722390][ T70] CR2: 00007f23fa1b8000 CR3: 00000000151ea000 CR4: 00000000001506f0 [ 78.735314][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.749027][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.758188][ T70] Call Trace: [ 78.761784][ T70] nf_unregister_net_hooks+0x117/0x160 [ 78.770094][ T70] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.777005][ T70] ? arptable_filter_net_exit+0x20/0x20 [ 78.783007][ T70] cleanup_net+0x451/0xb10 [ 78.790243][ T70] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.798064][ T70] process_one_work+0x98d/0x1600 [ 78.803164][ T70] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.813150][ T70] ? rwlock_bug.part.0+0x90/0x90 [ 78.819547][ T70] ? _raw_spin_lock_irq+0x41/0x50 [ 78.825284][ T70] worker_thread+0x64c/0x1120 [ 78.832112][ T70] ? __kthread_parkme+0x13f/0x1e0 [ 78.838981][ T70] ? process_one_work+0x1600/0x1600 [ 78.844405][ T70] kthread+0x3b1/0x4a0 [ 78.849703][ T70] ? __kthread_bind_mask+0xc0/0xc0 [ 78.855036][ T70] ret_from_fork+0x1f/0x30 [ 78.862128][ T70] Kernel panic - not syncing: panic_on_warn set ... [ 78.869572][ T70] CPU: 0 PID: 70 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 78.878497][ T70] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.888912][ T70] Workqueue: netns cleanup_net [ 78.893904][ T70] Call Trace: [ 78.898070][ T70] dump_stack+0x141/0x1d7 [ 78.902631][ T70] panic+0x306/0x73d [ 78.906664][ T70] ? __warn_printk+0xf3/0xf3 [ 78.911716][ T70] ? __warn.cold+0x1a/0x44 [ 78.916418][ T70] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.922343][ T70] __warn.cold+0x35/0x44 [ 78.926612][ T70] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.932454][ T70] report_bug+0x1bd/0x210 [ 78.937713][ T70] handle_bug+0x3c/0x60 [ 78.942216][ T70] exc_invalid_op+0x14/0x40 [ 78.947521][ T70] asm_exc_invalid_op+0x12/0x20 [ 78.953597][ T70] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.960632][ T70] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 11 04 00 00 8b 53 1c 89 ee 48 c7 c7 c0 d8 6d 8a e8 d0 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 e9 16 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.983125][ T70] RSP: 0018:ffffc90000fbfbc0 EFLAGS: 00010286 [ 78.989920][ T70] RAX: 0000000000000000 RBX: ffff88814a19dc00 RCX: 0000000000000000 [ 78.998572][ T70] RDX: ffff888014973880 RSI: ffffffff815c8ba5 RDI: fffff520001f7f6a [ 79.007406][ T70] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.016006][ T70] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801e0c0f20 [ 79.024402][ T70] R13: 0000000000000000 R14: ffff88802389b880 R15: 0000000000000001 [ 79.032889][ T70] ? wake_up_klogd.part.0+0x8e/0xd0 [ 79.038753][ T70] ? vprintk+0x95/0x260 [ 79.043085][ T70] nf_unregister_net_hooks+0x117/0x160 [ 79.048572][ T70] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.054593][ T70] ? arptable_filter_net_exit+0x20/0x20 [ 79.060339][ T70] cleanup_net+0x451/0xb10 [ 79.065297][ T70] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.071099][ T70] process_one_work+0x98d/0x1600 [ 79.076413][ T70] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.082768][ T70] ? rwlock_bug.part.0+0x90/0x90 [ 79.087742][ T70] ? _raw_spin_lock_irq+0x41/0x50 [ 79.092803][ T70] worker_thread+0x64c/0x1120 [ 79.097617][ T70] ? __kthread_parkme+0x13f/0x1e0 [ 79.103034][ T70] ? process_one_work+0x1600/0x1600 [ 79.108636][ T70] kthread+0x3b1/0x4a0 [ 79.112746][ T70] ? __kthread_bind_mask+0xc0/0xc0 [ 79.118531][ T70] ret_from_fork+0x1f/0x30 [ 79.123705][ T70] Kernel Offset: disabled [ 79.128730][ T70] Rebooting in 86400 seconds..