Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.40' (ECDSA) to the list of known hosts. 2021/05/07 09:26:33 fuzzer started 2021/05/07 09:26:33 connecting to host at 10.128.0.169:42775 2021/05/07 09:26:33 checking machine... 2021/05/07 09:26:33 checking revisions... 2021/05/07 09:26:33 testing simple program... syzkaller login: [ 76.183940][ T8417] chnl_net:caif_netlink_parms(): no params data found [ 76.242391][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.250699][ T8417] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.261965][ T8417] device bridge_slave_0 entered promiscuous mode [ 76.273467][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.281958][ T8417] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.291415][ T8417] device bridge_slave_1 entered promiscuous mode [ 76.314980][ T8417] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.326440][ T8417] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.352940][ T8417] team0: Port device team_slave_0 added [ 76.361004][ T8417] team0: Port device team_slave_1 added [ 76.382202][ T8417] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.390786][ T8417] 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. [ 76.420618][ T8417] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.435904][ T8417] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.444350][ T8417] 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. [ 76.471668][ T8417] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.500114][ T8417] device hsr_slave_0 entered promiscuous mode [ 76.509498][ T8417] device hsr_slave_1 entered promiscuous mode [ 76.615805][ T8417] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.633900][ T8417] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.646170][ T8417] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.660830][ T8417] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.687389][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.695377][ T8417] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.703917][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.711565][ T8417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.757456][ T8417] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.772277][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.785487][ T3147] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.795394][ T3147] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.805087][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.820838][ T8417] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.833588][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.843488][ T3147] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.851018][ T3147] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.872287][ T8638] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.882408][ T8638] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.889739][ T8638] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.915301][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.925208][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.934566][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.944017][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.955339][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.967353][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.990325][ T8417] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.002363][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.010307][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.030932][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.053049][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.066507][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.077999][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.091112][ T8417] device veth0_vlan entered promiscuous mode [ 77.105590][ T8417] device veth1_vlan entered promiscuous mode [ 77.131339][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.141451][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.151206][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.164884][ T8417] device veth0_macvtap entered promiscuous mode [ 77.177808][ T8417] device veth1_macvtap entered promiscuous mode [ 77.196183][ T8417] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.205123][ T8640] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.215964][ T8640] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready executing program [ 77.230130][ T8417] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.238305][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.248523][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.264553][ T8417] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.274303][ T8417] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.286669][ T8417] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.296349][ T8417] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.394280][ T102] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.404976][ T102] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.427663][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.445585][ T102] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.455467][ T102] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.467700][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/07 09:26:36 building call list... [ 78.128897][ T9] ------------[ cut here ]------------ [ 78.135346][ T9] hook not found, pf 3 num 0 [ 78.136168][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 78.155250][ T9] Modules linked in: [ 78.162264][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 78.171776][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.183252][ T9] Workqueue: netns cleanup_net [ 78.188240][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.196286][ T9] 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 [ 78.218448][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 78.226525][ T9] RAX: 0000000000000000 RBX: ffff888023ef9f00 RCX: 0000000000000000 [ 78.236139][ T9] RDX: ffff888011d78000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 78.245618][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.254001][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801bed0f20 [ 78.267744][ T9] R13: 0000000000000000 R14: ffff888024943400 R15: 0000000000000001 [ 78.288764][ T9] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 78.298492][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.310967][ T9] CR2: 00007f680e5af000 CR3: 0000000016e41000 CR4: 00000000001506e0 [ 78.321733][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.331457][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.343263][ T9] Call Trace: [ 78.346693][ T9] nf_unregister_net_hooks+0x117/0x160 [ 78.354180][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.363898][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 78.370538][ T9] cleanup_net+0x451/0xb10 [ 78.375255][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.384308][ T9] process_one_work+0x98d/0x1600 [ 78.390630][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.396624][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 78.403493][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 78.408595][ T9] worker_thread+0x64c/0x1120 [ 78.414773][ T9] ? process_one_work+0x1600/0x1600 [ 78.421486][ T9] kthread+0x3b1/0x4a0 [ 78.425767][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 78.432389][ T9] ret_from_fork+0x1f/0x30 [ 78.436868][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 78.443989][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 78.451893][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.463012][ T9] Workqueue: netns cleanup_net [ 78.467892][ T9] Call Trace: [ 78.471443][ T9] dump_stack+0x141/0x1d7 [ 78.476675][ T9] panic+0x306/0x73d [ 78.480792][ T9] ? __warn_printk+0xf3/0xf3 [ 78.485529][ T9] ? __warn.cold+0x1a/0x44 [ 78.490125][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.496107][ T9] __warn.cold+0x35/0x44 [ 78.500348][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.506185][ T9] report_bug+0x1bd/0x210 [ 78.510635][ T9] handle_bug+0x3c/0x60 [ 78.515345][ T9] exc_invalid_op+0x14/0x40 [ 78.520016][ T9] asm_exc_invalid_op+0x12/0x20 [ 78.525478][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.532343][ T9] 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 [ 78.552826][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 78.558988][ T9] RAX: 0000000000000000 RBX: ffff888023ef9f00 RCX: 0000000000000000 [ 78.566968][ T9] RDX: ffff888011d78000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 78.575287][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.583613][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801bed0f20 [ 78.591847][ T9] R13: 0000000000000000 R14: ffff888024943400 R15: 0000000000000001 [ 78.600343][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.605633][ T9] ? vprintk+0x95/0x260 [ 78.610058][ T9] nf_unregister_net_hooks+0x117/0x160 [ 78.615622][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.621510][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 78.627071][ T9] cleanup_net+0x451/0xb10 [ 78.631487][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.636864][ T9] process_one_work+0x98d/0x1600 [ 78.641990][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.647472][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 78.652427][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 78.657597][ T9] worker_thread+0x64c/0x1120 [ 78.662656][ T9] ? process_one_work+0x1600/0x1600 [ 78.667863][ T9] kthread+0x3b1/0x4a0 [ 78.671923][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 78.677202][ T9] ret_from_fork+0x1f/0x30 [ 78.683921][ T9] Kernel Offset: disabled [ 78.688709][ T9] Rebooting in 86400 seconds..