[ 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 '10.128.1.123' (ECDSA) to the list of known hosts. 2021/05/05 00:44:00 fuzzer started 2021/05/05 00:44:00 connecting to host at 10.128.0.169:41703 2021/05/05 00:44:00 checking machine... 2021/05/05 00:44:00 checking revisions... 2021/05/05 00:44:00 testing simple program... syzkaller login: [ 79.270785][ T8439] chnl_net:caif_netlink_parms(): no params data found [ 79.346317][ T8439] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.355582][ T8439] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.364805][ T8439] device bridge_slave_0 entered promiscuous mode [ 79.375824][ T8439] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.384108][ T8439] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.395408][ T8439] device bridge_slave_1 entered promiscuous mode [ 79.421076][ T8439] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.433228][ T8439] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.456760][ T8439] team0: Port device team_slave_0 added [ 79.465651][ T8439] team0: Port device team_slave_1 added [ 79.486221][ T8439] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.494329][ T8439] 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. [ 79.524134][ T8439] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 79.541741][ T8439] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 79.551007][ T8439] 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. [ 79.581613][ T8439] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.611594][ T8439] device hsr_slave_0 entered promiscuous mode [ 79.621616][ T8439] device hsr_slave_1 entered promiscuous mode [ 79.737025][ T8439] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.750273][ T8439] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.761279][ T8439] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.772278][ T8439] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.803323][ T8439] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.811131][ T8439] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.820332][ T8439] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.827731][ T8439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.879015][ T8439] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.895387][ T4854] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.907686][ T4854] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.917446][ T4854] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.926144][ T4854] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 79.940702][ T8439] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.954651][ T4854] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.965066][ T4854] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.972609][ T4854] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.989084][ T4854] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.999235][ T4854] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.006389][ T4854] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.033612][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.044607][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.055224][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.067609][ T8439] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 80.082849][ T8439] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.093133][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.102130][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.129969][ T8439] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.141615][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.150168][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.172931][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.196951][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.206826][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.217581][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 80.229732][ T8439] device veth0_vlan entered promiscuous mode [ 80.243536][ T8439] device veth1_vlan entered promiscuous mode [ 80.262984][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 80.272245][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 80.289730][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 80.300819][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 80.312869][ T8439] device veth0_macvtap entered promiscuous mode [ 80.326620][ T8439] device veth1_macvtap entered promiscuous mode [ 80.349203][ T8439] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.357574][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 80.367044][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 80.376131][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 80.386714][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 80.401035][ T8439] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.410934][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 80.420635][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 80.432805][ T8439] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.443193][ T8439] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.454169][ T8439] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.464183][ T8439] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 80.569764][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.586346][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.614152][ T8659] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 80.635892][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.645779][ T25] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.663069][ T8659] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/05 00:44:03 building call list... [ 81.382624][ T96] ------------[ cut here ]------------ [ 81.394496][ T96] hook not found, pf 3 num 0 [ 81.395177][ T96] WARNING: CPU: 0 PID: 96 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 81.414899][ T96] Modules linked in: [ 81.428307][ T96] CPU: 0 PID: 96 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 81.436619][ T96] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.452503][ T96] Workqueue: netns cleanup_net [ 81.457339][ T96] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 81.465397][ T96] 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 40 4d 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 19 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 81.487471][ T96] RSP: 0018:ffffc9000116fbc0 EFLAGS: 00010286 [ 81.494971][ T96] RAX: 0000000000000000 RBX: ffff8880241fef00 RCX: 0000000000000000 [ 81.510361][ T96] RDX: ffff888013959c40 RSI: ffffffff815c8ba5 RDI: fffff5200022df6a [ 81.519993][ T96] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 81.530784][ T96] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880309c8f20 [ 81.541094][ T96] R13: 0000000000000000 R14: ffff888013f49180 R15: 0000000000000001 [ 81.551637][ T96] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 81.561949][ T96] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.571051][ T96] CR2: 00007fab67541000 CR3: 00000000256aa000 CR4: 00000000001506f0 [ 81.583971][ T96] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.594746][ T96] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.604056][ T96] Call Trace: [ 81.607477][ T96] nf_unregister_net_hooks+0x117/0x160 [ 81.615810][ T96] arpt_unregister_table_pre_exit+0x67/0x80 [ 81.623238][ T96] ? arptable_filter_net_exit+0x20/0x20 [ 81.631738][ T96] cleanup_net+0x451/0xb10 [ 81.636312][ T96] ? ops_free_list.part.0+0x3d0/0x3d0 [ 81.643520][ T96] process_one_work+0x98d/0x1600 [ 81.651438][ T96] ? pwq_dec_nr_in_flight+0x320/0x320 [ 81.657328][ T96] ? rwlock_bug.part.0+0x90/0x90 [ 81.670438][ T96] ? _raw_spin_lock_irq+0x41/0x50 [ 81.676196][ T96] worker_thread+0x64c/0x1120 [ 81.683005][ T96] ? process_one_work+0x1600/0x1600 [ 81.691534][ T96] kthread+0x3b1/0x4a0 [ 81.695667][ T96] ? __kthread_bind_mask+0xc0/0xc0 [ 81.702567][ T96] ret_from_fork+0x1f/0x30 [ 81.707236][ T96] Kernel panic - not syncing: panic_on_warn set ... [ 81.714162][ T96] CPU: 0 PID: 96 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 81.722977][ T96] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.733451][ T96] Workqueue: netns cleanup_net [ 81.738248][ T96] Call Trace: [ 81.741741][ T96] dump_stack+0x141/0x1d7 [ 81.746461][ T96] panic+0x306/0x73d [ 81.750502][ T96] ? __warn_printk+0xf3/0xf3 [ 81.755119][ T96] ? __warn.cold+0x1a/0x44 [ 81.759559][ T96] ? __nf_unregister_net_hook+0x1eb/0x610 [ 81.765309][ T96] __warn.cold+0x35/0x44 [ 81.769767][ T96] ? __nf_unregister_net_hook+0x1eb/0x610 [ 81.775776][ T96] report_bug+0x1bd/0x210 [ 81.780240][ T96] handle_bug+0x3c/0x60 [ 81.784501][ T96] exc_invalid_op+0x14/0x40 [ 81.789210][ T96] asm_exc_invalid_op+0x12/0x20 [ 81.794257][ T96] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 81.800611][ T96] 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 40 4d 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 19 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 81.820641][ T96] RSP: 0018:ffffc9000116fbc0 EFLAGS: 00010286 [ 81.826999][ T96] RAX: 0000000000000000 RBX: ffff8880241fef00 RCX: 0000000000000000 [ 81.835086][ T96] RDX: ffff888013959c40 RSI: ffffffff815c8ba5 RDI: fffff5200022df6a [ 81.843284][ T96] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 81.851542][ T96] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880309c8f20 [ 81.859792][ T96] R13: 0000000000000000 R14: ffff888013f49180 R15: 0000000000000001 [ 81.868073][ T96] ? wake_up_klogd.part.0+0x8e/0xd0 [ 81.873498][ T96] ? vprintk+0x95/0x260 [ 81.877872][ T96] nf_unregister_net_hooks+0x117/0x160 [ 81.883545][ T96] arpt_unregister_table_pre_exit+0x67/0x80 [ 81.889464][ T96] ? arptable_filter_net_exit+0x20/0x20 [ 81.895218][ T96] cleanup_net+0x451/0xb10 [ 81.900653][ T96] ? ops_free_list.part.0+0x3d0/0x3d0 [ 81.906465][ T96] process_one_work+0x98d/0x1600 [ 81.911727][ T96] ? pwq_dec_nr_in_flight+0x320/0x320 [ 81.917321][ T96] ? rwlock_bug.part.0+0x90/0x90 [ 81.922577][ T96] ? _raw_spin_lock_irq+0x41/0x50 [ 81.928005][ T96] worker_thread+0x64c/0x1120 [ 81.932849][ T96] ? process_one_work+0x1600/0x1600 [ 81.938176][ T96] kthread+0x3b1/0x4a0 [ 81.942269][ T96] ? __kthread_bind_mask+0xc0/0xc0 [ 81.947511][ T96] ret_from_fork+0x1f/0x30 [ 81.953713][ T96] Kernel Offset: disabled [ 81.959344][ T96] Rebooting in 86400 seconds..