[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts. 2021/05/06 18:24:21 fuzzer started 2021/05/06 18:24:21 connecting to host at 10.128.0.169:43621 2021/05/06 18:24:21 checking machine... 2021/05/06 18:24:21 checking revisions... 2021/05/06 18:24:21 testing simple program... syzkaller login: [ 80.628870][ T8500] chnl_net:caif_netlink_parms(): no params data found [ 80.691981][ T8500] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.701184][ T8500] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.712145][ T8500] device bridge_slave_0 entered promiscuous mode [ 80.724999][ T8500] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.734166][ T8500] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.743993][ T8500] device bridge_slave_1 entered promiscuous mode [ 80.769921][ T8500] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.783104][ T8500] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.808721][ T8500] team0: Port device team_slave_0 added [ 80.817840][ T8500] team0: Port device team_slave_1 added [ 80.836909][ T8500] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.846385][ T8500] 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. [ 80.876051][ T8500] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.890217][ T8500] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.898500][ T8500] 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. [ 80.925425][ T8500] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.957065][ T8500] device hsr_slave_0 entered promiscuous mode [ 80.965050][ T8500] device hsr_slave_1 entered promiscuous mode [ 81.084158][ T8500] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.096402][ T8500] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.106991][ T8500] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.117509][ T8500] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.149573][ T8500] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.157386][ T8500] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.166158][ T8500] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.174145][ T8500] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.229072][ T8500] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.246187][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.259648][ T27] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.269152][ T27] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.278048][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 81.295070][ T8500] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.307864][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.318859][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.326591][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.343508][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.353675][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.361033][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.382156][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.395903][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.405373][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.422985][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.436071][ T8500] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.452898][ T8500] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.463542][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.485668][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.494617][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.509336][ T8500] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.534992][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.562123][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.572601][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.581985][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.593038][ T8500] device veth0_vlan entered promiscuous mode [ 81.610456][ T8500] device veth1_vlan entered promiscuous mode [ 81.640544][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.649873][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.664403][ T8500] device veth0_macvtap entered promiscuous mode [ 81.675183][ T8500] device veth1_macvtap entered promiscuous mode [ 81.704375][ T8500] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.713295][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 81.723555][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 81.732525][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.742408][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.755398][ T8500] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.766208][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.776057][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.789438][ T8500] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.800123][ T8500] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.809191][ T8500] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.822040][ T8500] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 81.938538][ T336] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.951589][ T336] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.977630][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.009433][ T139] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.021565][ T139] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.036304][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 18:24:24 building call list... [ 82.802005][ T336] ------------[ cut here ]------------ [ 82.808113][ T336] hook not found, pf 3 num 0 [ 82.808801][ T336] WARNING: CPU: 1 PID: 336 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 82.832018][ T336] Modules linked in: [ 82.836541][ T336] CPU: 1 PID: 336 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 82.847837][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.861292][ T336] Workqueue: netns cleanup_net [ 82.866327][ T336] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 82.875580][ T336] 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 95 6e 8a e8 16 3f 8a 01 <0f> 0b e9 e5 00 00 00 e8 39 02 2b fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 82.902801][ T336] RSP: 0018:ffffc90001e8fbc0 EFLAGS: 00010286 [ 82.909262][ T336] RAX: 0000000000000000 RBX: ffff8880280f0c00 RCX: 0000000000000000 [ 82.918983][ T336] RDX: ffff8880133bb880 RSI: ffffffff815cabb5 RDI: fffff520003d1f6a [ 82.930134][ T336] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 82.938266][ T336] R10: ffffffff815c4a1e R11: 0000000000000000 R12: ffff88801fff8f20 [ 82.948444][ T336] R13: 0000000000000000 R14: ffff88802214d800 R15: 0000000000000001 [ 82.959580][ T336] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 82.971300][ T336] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.978665][ T336] CR2: 00007f8e54416000 CR3: 0000000027b0b000 CR4: 00000000001506e0 [ 82.991629][ T336] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.001146][ T336] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.010880][ T336] Call Trace: [ 83.014306][ T336] nf_unregister_net_hooks+0x117/0x160 [ 83.023356][ T336] arpt_unregister_table_pre_exit+0x67/0x80 [ 83.029516][ T336] ? arptable_filter_net_exit+0x20/0x20 [ 83.037163][ T336] cleanup_net+0x451/0xb10 [ 83.045238][ T336] ? ops_free_list.part.0+0x3d0/0x3d0 [ 83.055778][ T336] process_one_work+0x98d/0x1600 [ 83.063650][ T336] ? pwq_dec_nr_in_flight+0x320/0x320 [ 83.069265][ T336] ? rwlock_bug.part.0+0x90/0x90 [ 83.076054][ T336] ? _raw_spin_lock_irq+0x41/0x50 [ 83.084555][ T336] worker_thread+0x64c/0x1120 [ 83.091911][ T336] ? __kthread_parkme+0x13f/0x1e0 [ 83.097459][ T336] ? process_one_work+0x1600/0x1600 [ 83.107669][ T336] kthread+0x3b1/0x4a0 [ 83.113205][ T336] ? __kthread_bind_mask+0xc0/0xc0 [ 83.118650][ T336] ret_from_fork+0x1f/0x30 [ 83.127453][ T336] Kernel panic - not syncing: panic_on_warn set ... [ 83.134330][ T336] CPU: 1 PID: 336 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 83.142710][ T336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.153308][ T336] Workqueue: netns cleanup_net [ 83.158319][ T336] Call Trace: [ 83.161630][ T336] dump_stack+0x141/0x1d7 [ 83.166150][ T336] panic+0x306/0x73d [ 83.170379][ T336] ? __warn_printk+0xf3/0xf3 [ 83.175575][ T336] ? __warn.cold+0x1a/0x44 [ 83.180218][ T336] ? __nf_unregister_net_hook+0x1eb/0x610 [ 83.186173][ T336] __warn.cold+0x35/0x44 [ 83.190649][ T336] ? __nf_unregister_net_hook+0x1eb/0x610 [ 83.196975][ T336] report_bug+0x1bd/0x210 [ 83.201357][ T336] handle_bug+0x3c/0x60 [ 83.206007][ T336] exc_invalid_op+0x14/0x40 [ 83.211132][ T336] asm_exc_invalid_op+0x12/0x20 [ 83.216604][ T336] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 83.223643][ T336] 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 95 6e 8a e8 16 3f 8a 01 <0f> 0b e9 e5 00 00 00 e8 39 02 2b fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 83.243624][ T336] RSP: 0018:ffffc90001e8fbc0 EFLAGS: 00010286 [ 83.250139][ T336] RAX: 0000000000000000 RBX: ffff8880280f0c00 RCX: 0000000000000000 [ 83.258428][ T336] RDX: ffff8880133bb880 RSI: ffffffff815cabb5 RDI: fffff520003d1f6a [ 83.266835][ T336] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 83.275100][ T336] R10: ffffffff815c4a1e R11: 0000000000000000 R12: ffff88801fff8f20 [ 83.283398][ T336] R13: 0000000000000000 R14: ffff88802214d800 R15: 0000000000000001 [ 83.291738][ T336] ? wake_up_klogd.part.0+0x8e/0xd0 [ 83.297562][ T336] ? vprintk+0x95/0x260 [ 83.301944][ T336] nf_unregister_net_hooks+0x117/0x160 [ 83.307442][ T336] arpt_unregister_table_pre_exit+0x67/0x80 [ 83.313423][ T336] ? arptable_filter_net_exit+0x20/0x20 [ 83.318968][ T336] cleanup_net+0x451/0xb10 [ 83.323473][ T336] ? ops_free_list.part.0+0x3d0/0x3d0 [ 83.329032][ T336] process_one_work+0x98d/0x1600 [ 83.334071][ T336] ? pwq_dec_nr_in_flight+0x320/0x320 [ 83.339570][ T336] ? rwlock_bug.part.0+0x90/0x90 [ 83.344790][ T336] ? _raw_spin_lock_irq+0x41/0x50 [ 83.349832][ T336] worker_thread+0x64c/0x1120 [ 83.354556][ T336] ? __kthread_parkme+0x13f/0x1e0 [ 83.359762][ T336] ? process_one_work+0x1600/0x1600 [ 83.364968][ T336] kthread+0x3b1/0x4a0 [ 83.369033][ T336] ? __kthread_bind_mask+0xc0/0xc0 [ 83.374350][ T336] ret_from_fork+0x1f/0x30 [ 83.380285][ T336] Kernel Offset: disabled [ 83.384750][ T336] Rebooting in 86400 seconds..