Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. 2021/04/30 00:22:26 fuzzer started 2021/04/30 00:22:26 connecting to host at 10.128.0.169:43125 2021/04/30 00:22:26 checking machine... 2021/04/30 00:22:26 checking revisions... 2021/04/30 00:22:26 testing simple program... syzkaller login: [ 74.867263][ T8423] chnl_net:caif_netlink_parms(): no params data found [ 74.922101][ T8423] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.930775][ T8423] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.940122][ T8423] device bridge_slave_0 entered promiscuous mode [ 74.950727][ T8423] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.958484][ T8423] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.967375][ T8423] device bridge_slave_1 entered promiscuous mode [ 74.990802][ T8423] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.005101][ T8423] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.032684][ T8423] team0: Port device team_slave_0 added [ 75.041169][ T8423] team0: Port device team_slave_1 added [ 75.060933][ T8423] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.068262][ T8423] 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. [ 75.095283][ T8423] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.108901][ T8423] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.116754][ T8423] 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. [ 75.143858][ T8423] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.171072][ T8423] device hsr_slave_0 entered promiscuous mode [ 75.178656][ T8423] device hsr_slave_1 entered promiscuous mode [ 75.290785][ T8423] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.303190][ T8423] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.314493][ T8423] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.324981][ T8423] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.351270][ T8423] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.359618][ T8423] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.368763][ T8423] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.376848][ T8423] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.423418][ T8423] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.441759][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.455834][ T2941] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.465157][ T2941] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.473687][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.490344][ T8423] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.506563][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.518559][ T2941] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.526572][ T2941] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.539863][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.549796][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.557484][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.585632][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.594982][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.606734][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.616442][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.630358][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.640729][ T8423] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.668599][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.679044][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.697241][ T8423] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.724474][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.747466][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.757776][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.768585][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.780724][ T8423] device veth0_vlan entered promiscuous mode [ 75.797527][ T8423] device veth1_vlan entered promiscuous mode [ 75.837320][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.846998][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.857877][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.872972][ T8423] device veth0_macvtap entered promiscuous mode [ 75.892458][ T8423] device veth1_macvtap entered promiscuous mode [ 75.921114][ T8423] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.929655][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.939522][ T2941] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.953264][ T8423] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.963401][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.974572][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.986953][ T8423] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.009368][ T8423] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.019103][ T8423] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.029393][ T8423] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 76.137185][ T1045] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.150730][ T1045] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.177305][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.189051][ T184] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.199908][ T184] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.212245][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/30 00:22:29 building call list... [ 76.847737][ T184] ------------[ cut here ]------------ [ 76.855658][ T184] hook not found, pf 3 num 0 [ 76.856263][ T184] WARNING: CPU: 0 PID: 184 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 76.874220][ T184] Modules linked in: [ 76.878231][ T184] CPU: 0 PID: 184 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 76.891771][ T184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.905103][ T184] Workqueue: netns cleanup_net [ 76.910118][ T184] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.919364][ T184] 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 78 6d 8a e8 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 76.957663][ T184] RSP: 0018:ffffc90000fafbc0 EFLAGS: 00010286 [ 76.965191][ T184] RAX: 0000000000000000 RBX: ffff888021b62b00 RCX: 0000000000000000 [ 76.976043][ T184] RDX: ffff8880126754c0 RSI: ffffffff815c8ba5 RDI: fffff520001f5f6a [ 76.985656][ T184] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.996216][ T184] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880291b8f20 [ 77.005180][ T184] R13: 0000000000000000 R14: ffff888012e8d000 R15: 0000000000000001 [ 77.013382][ T184] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 77.026262][ T184] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.033309][ T184] CR2: 00007fbcd0aca000 CR3: 0000000025298000 CR4: 00000000001506f0 [ 77.045430][ T184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.056454][ T184] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.065542][ T184] Call Trace: [ 77.068945][ T184] nf_unregister_net_hooks+0x117/0x160 [ 77.077448][ T184] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.087061][ T184] ? arptable_filter_net_exit+0x20/0x20 [ 77.092768][ T184] cleanup_net+0x451/0xb10 [ 77.101139][ T184] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.107812][ T184] process_one_work+0x98d/0x1600 [ 77.112929][ T184] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.121942][ T184] ? rwlock_bug.part.0+0x90/0x90 [ 77.128598][ T184] ? _raw_spin_lock_irq+0x41/0x50 [ 77.137160][ T184] worker_thread+0x64c/0x1120 [ 77.141999][ T184] ? __kthread_parkme+0x13f/0x1e0 [ 77.148849][ T184] ? process_one_work+0x1600/0x1600 [ 77.156414][ T184] kthread+0x3b1/0x4a0 [ 77.160527][ T184] ? __kthread_bind_mask+0xc0/0xc0 [ 77.168934][ T184] ret_from_fork+0x1f/0x30 [ 77.173435][ T184] Kernel panic - not syncing: panic_on_warn set ... [ 77.180109][ T184] CPU: 0 PID: 184 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 77.188454][ T184] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.199350][ T184] Workqueue: netns cleanup_net [ 77.204345][ T184] Call Trace: [ 77.207973][ T184] dump_stack+0x141/0x1d7 [ 77.212892][ T184] panic+0x306/0x73d [ 77.216981][ T184] ? __warn_printk+0xf3/0xf3 [ 77.221790][ T184] ? __warn.cold+0x1a/0x44 [ 77.226314][ T184] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.232345][ T184] __warn.cold+0x35/0x44 [ 77.236711][ T184] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.242893][ T184] report_bug+0x1bd/0x210 [ 77.247356][ T184] handle_bug+0x3c/0x60 [ 77.251681][ T184] exc_invalid_op+0x14/0x40 [ 77.256290][ T184] asm_exc_invalid_op+0x12/0x20 [ 77.261339][ T184] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.267774][ T184] 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 78 6d 8a e8 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.288179][ T184] RSP: 0018:ffffc90000fafbc0 EFLAGS: 00010286 [ 77.294659][ T184] RAX: 0000000000000000 RBX: ffff888021b62b00 RCX: 0000000000000000 [ 77.303191][ T184] RDX: ffff8880126754c0 RSI: ffffffff815c8ba5 RDI: fffff520001f5f6a [ 77.311800][ T184] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.320206][ T184] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880291b8f20 [ 77.328487][ T184] R13: 0000000000000000 R14: ffff888012e8d000 R15: 0000000000000001 [ 77.336854][ T184] ? wake_up_klogd.part.0+0x8e/0xd0 [ 77.342461][ T184] ? vprintk+0x95/0x260 [ 77.347266][ T184] nf_unregister_net_hooks+0x117/0x160 [ 77.352769][ T184] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.358969][ T184] ? arptable_filter_net_exit+0x20/0x20 [ 77.364697][ T184] cleanup_net+0x451/0xb10 [ 77.369243][ T184] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.374751][ T184] process_one_work+0x98d/0x1600 [ 77.379890][ T184] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.385399][ T184] ? rwlock_bug.part.0+0x90/0x90 [ 77.390605][ T184] ? _raw_spin_lock_irq+0x41/0x50 [ 77.399686][ T184] worker_thread+0x64c/0x1120 [ 77.408438][ T184] ? __kthread_parkme+0x13f/0x1e0 [ 77.415948][ T184] ? process_one_work+0x1600/0x1600 [ 77.425134][ T184] kthread+0x3b1/0x4a0 [ 77.430046][ T184] ? __kthread_bind_mask+0xc0/0xc0 [ 77.436669][ T184] ret_from_fork+0x1f/0x30 [ 77.443781][ T184] Kernel Offset: disabled [ 77.449997][ T184] Rebooting in 86400 seconds..