Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.207' (ECDSA) to the list of known hosts. 2021/05/06 23:40:51 fuzzer started 2021/05/06 23:40:51 connecting to host at 10.128.0.169:34581 2021/05/06 23:40:51 checking machine... 2021/05/06 23:40:51 checking revisions... 2021/05/06 23:40:51 testing simple program... syzkaller login: [ 77.438864][ T8442] chnl_net:caif_netlink_parms(): no params data found [ 77.549164][ T8442] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.557129][ T8442] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.566595][ T8442] device bridge_slave_0 entered promiscuous mode [ 77.578836][ T8442] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.586131][ T8442] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.595128][ T8442] device bridge_slave_1 entered promiscuous mode [ 77.619607][ T8442] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.631552][ T8442] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.656388][ T8442] team0: Port device team_slave_0 added [ 77.665659][ T8442] team0: Port device team_slave_1 added [ 77.685139][ T8442] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.692563][ T8442] 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. [ 77.718929][ T8442] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.732320][ T8442] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.739553][ T8442] 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. [ 77.766335][ T8442] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.793732][ T8442] device hsr_slave_0 entered promiscuous mode [ 77.800875][ T8442] device hsr_slave_1 entered promiscuous mode [ 77.915637][ T8442] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.929236][ T8442] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.941945][ T8442] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.951662][ T8442] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.982988][ T8442] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.990786][ T8442] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.999434][ T8442] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.006976][ T8442] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.056304][ T8442] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.072293][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.084889][ T3147] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.094941][ T3147] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.104080][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.120226][ T8442] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.132036][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.141621][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.149264][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.169499][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.179115][ T20] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.186752][ T20] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.202161][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.212302][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.226177][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.241854][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.255077][ T8442] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.267647][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.276447][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.295879][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.304191][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.319979][ T8442] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.342118][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.366470][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.376400][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.387725][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.399979][ T8442] device veth0_vlan entered promiscuous mode [ 78.413876][ T8442] device veth1_vlan entered promiscuous mode [ 78.440688][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.449502][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.458732][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.474012][ T8442] device veth0_macvtap entered promiscuous mode [ 78.486050][ T8442] device veth1_macvtap entered promiscuous mode [ 78.506085][ T8442] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.515947][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.526514][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.539525][ T8442] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.553528][ T8442] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.563991][ T8442] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.574154][ T8442] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 78.586421][ T8442] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.599567][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.609632][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.711064][ T478] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.720097][ T478] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.736071][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.767362][ T181] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.776704][ T181] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.797511][ T4883] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 23:40:54 building call list... [ 79.503911][ T478] ------------[ cut here ]------------ [ 79.513704][ T478] hook not found, pf 3 num 0 [ 79.514364][ T478] WARNING: CPU: 1 PID: 478 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 79.532416][ T478] Modules linked in: [ 79.536382][ T478] CPU: 1 PID: 478 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 79.547039][ T478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.559547][ T478] Workqueue: netns cleanup_net [ 79.564464][ T478] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.571643][ T478] 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 [ 79.597197][ T478] RSP: 0018:ffffc900021afbc0 EFLAGS: 00010286 [ 79.603964][ T478] RAX: 0000000000000000 RBX: ffff88814984a600 RCX: 0000000000000000 [ 79.614172][ T478] RDX: ffff8880137d0000 RSI: ffffffff815c8ba5 RDI: fffff52000435f6a [ 79.623132][ T478] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.633800][ T478] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888024698f20 [ 79.642959][ T478] R13: 0000000000000000 R14: ffff8880143cbd80 R15: 0000000000000001 [ 79.653531][ T478] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 79.663258][ T478] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.676670][ T478] CR2: 0000556f50671160 CR3: 000000002563d000 CR4: 00000000001506e0 [ 79.685307][ T478] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.695385][ T478] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.703934][ T478] Call Trace: [ 79.710182][ T478] nf_unregister_net_hooks+0x117/0x160 [ 79.715705][ T478] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.722437][ T478] ? arptable_filter_net_exit+0x20/0x20 [ 79.730419][ T478] cleanup_net+0x451/0xb10 [ 79.735565][ T478] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.741471][ T478] process_one_work+0x98d/0x1600 [ 79.746466][ T478] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.755856][ T478] ? rwlock_bug.part.0+0x90/0x90 [ 79.761694][ T478] ? _raw_spin_lock_irq+0x41/0x50 [ 79.769053][ T478] worker_thread+0x64c/0x1120 [ 79.774448][ T478] ? __kthread_parkme+0x13f/0x1e0 [ 79.780086][ T478] ? process_one_work+0x1600/0x1600 [ 79.785710][ T478] kthread+0x3b1/0x4a0 [ 79.792207][ T478] ? __kthread_bind_mask+0xc0/0xc0 [ 79.798059][ T478] ret_from_fork+0x1f/0x30 [ 79.802720][ T478] Kernel panic - not syncing: panic_on_warn set ... [ 79.809589][ T478] CPU: 1 PID: 478 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 79.817779][ T478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.828290][ T478] Workqueue: netns cleanup_net [ 79.833269][ T478] Call Trace: [ 79.836738][ T478] dump_stack+0x141/0x1d7 [ 79.841104][ T478] panic+0x306/0x73d [ 79.845038][ T478] ? __warn_printk+0xf3/0xf3 [ 79.850196][ T478] ? __warn.cold+0x1a/0x44 [ 79.854818][ T478] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.860833][ T478] __warn.cold+0x35/0x44 [ 79.865145][ T478] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.871250][ T478] report_bug+0x1bd/0x210 [ 79.875896][ T478] handle_bug+0x3c/0x60 [ 79.880330][ T478] exc_invalid_op+0x14/0x40 [ 79.885037][ T478] asm_exc_invalid_op+0x12/0x20 [ 79.889922][ T478] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.896626][ T478] 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 [ 79.916784][ T478] RSP: 0018:ffffc900021afbc0 EFLAGS: 00010286 [ 79.923568][ T478] RAX: 0000000000000000 RBX: ffff88814984a600 RCX: 0000000000000000 [ 79.931724][ T478] RDX: ffff8880137d0000 RSI: ffffffff815c8ba5 RDI: fffff52000435f6a [ 79.939884][ T478] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.948149][ T478] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888024698f20 [ 79.956167][ T478] R13: 0000000000000000 R14: ffff8880143cbd80 R15: 0000000000000001 [ 79.965200][ T478] ? wake_up_klogd.part.0+0x8e/0xd0 [ 79.971838][ T478] ? vprintk+0x95/0x260 [ 79.976303][ T478] nf_unregister_net_hooks+0x117/0x160 [ 79.982061][ T478] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.988141][ T478] ? arptable_filter_net_exit+0x20/0x20 [ 79.993811][ T478] cleanup_net+0x451/0xb10 [ 79.998376][ T478] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.003794][ T478] process_one_work+0x98d/0x1600 [ 80.009201][ T478] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.014776][ T478] ? rwlock_bug.part.0+0x90/0x90 [ 80.019927][ T478] ? _raw_spin_lock_irq+0x41/0x50 [ 80.025402][ T478] worker_thread+0x64c/0x1120 [ 80.030224][ T478] ? __kthread_parkme+0x13f/0x1e0 [ 80.035543][ T478] ? process_one_work+0x1600/0x1600 [ 80.040859][ T478] kthread+0x3b1/0x4a0 [ 80.045139][ T478] ? __kthread_bind_mask+0xc0/0xc0 [ 80.050433][ T478] ret_from_fork+0x1f/0x30 [ 80.056699][ T478] Kernel Offset: disabled [ 80.061550][ T478] Rebooting in 86400 seconds..