Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.20' (ECDSA) to the list of known hosts. 2021/05/03 16:05:16 fuzzer started 2021/05/03 16:05:16 connecting to host at 10.128.0.169:46133 2021/05/03 16:05:16 checking machine... 2021/05/03 16:05:16 checking revisions... 2021/05/03 16:05:16 testing simple program... syzkaller login: [ 55.634879][ T8412] chnl_net:caif_netlink_parms(): no params data found [ 55.673783][ T8412] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.681784][ T8412] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.690635][ T8412] device bridge_slave_0 entered promiscuous mode [ 55.700100][ T8412] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.708042][ T8412] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.716173][ T8412] device bridge_slave_1 entered promiscuous mode [ 55.732578][ T8412] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.743119][ T8412] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.762714][ T8412] team0: Port device team_slave_0 added [ 55.769756][ T8412] team0: Port device team_slave_1 added [ 55.785281][ T8412] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 55.792440][ T8412] 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. [ 55.818913][ T8412] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 55.831236][ T8412] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 55.838350][ T8412] 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. [ 55.864340][ T8412] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 55.887060][ T8412] device hsr_slave_0 entered promiscuous mode [ 55.893813][ T8412] device hsr_slave_1 entered promiscuous mode [ 55.970443][ T8412] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 55.981137][ T8412] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.990005][ T8412] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 55.998605][ T8412] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.018484][ T8412] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.026685][ T8412] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.034330][ T8412] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.041430][ T8412] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.077644][ T8412] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.090294][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.101017][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.109931][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.118759][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 56.133047][ T8412] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.143353][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.152961][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.160475][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.178586][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.188275][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.195303][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.208791][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.218071][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.226591][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.238822][ T8631] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.252014][ T8412] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 56.264085][ T8412] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.273730][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.294759][ T8412] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 56.302099][ T8631] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 56.310410][ T8631] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 56.328600][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 56.353046][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 56.362503][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 56.370670][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 56.381877][ T8412] device veth0_vlan entered promiscuous mode [ 56.394432][ T8412] device veth1_vlan entered promiscuous mode [ 56.414285][ T8412] device veth0_macvtap entered promiscuous mode [ 56.422164][ T3315] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 56.430381][ T3315] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 56.439063][ T3315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 56.448030][ T3315] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 56.459078][ T8412] device veth1_macvtap entered promiscuous mode [ 56.473860][ T8412] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 56.481392][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 56.493978][ T8412] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 56.502296][ T3315] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 56.513367][ T8412] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.525164][ T8412] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.534255][ T8412] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.544666][ T8412] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.606050][ T428] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.637105][ T428] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.650585][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.664688][ T334] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.672951][ T334] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.681646][ T8631] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 16:05:19 building call list... executing program [ 57.197765][ T334] ------------[ cut here ]------------ [ 57.203766][ T334] hook not found, pf 3 num 0 [ 57.204273][ T334] WARNING: CPU: 0 PID: 334 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 57.219653][ T334] Modules linked in: [ 57.223556][ T334] CPU: 0 PID: 334 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 57.231828][ T334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.243655][ T334] Workqueue: netns cleanup_net [ 57.248963][ T334] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 57.261318][ T334] 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 15 6e 8a e8 f6 3c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 3e 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 57.297059][ T334] RSP: 0018:ffffc90001fcfbc0 EFLAGS: 00010286 [ 57.303327][ T334] RAX: 0000000000000000 RBX: ffff88814459f300 RCX: 0000000000000000 [ 57.312628][ T334] RDX: ffff888013648000 RSI: ffffffff815caa75 RDI: fffff520003f9f6a [ 57.321149][ T334] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 57.330508][ T334] R10: ffffffff815c48de R11: 0000000000000000 R12: ffff888033e98f20 [ 57.338763][ T334] R13: 0000000000000000 R14: ffff888012825c00 R15: 0000000000000001 [ 57.346743][ T334] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 57.357115][ T334] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.363708][ T334] CR2: 000000c000a00000 CR3: 00000000159c4000 CR4: 0000000000350ee0 [ 57.374379][ T334] Call Trace: [ 57.378043][ T334] nf_unregister_net_hooks+0x117/0x160 [ 57.383521][ T334] arpt_unregister_table_pre_exit+0x67/0x80 [ 57.391857][ T334] ? arptable_filter_net_exit+0x20/0x20 [ 57.397911][ T334] cleanup_net+0x451/0xb10 [ 57.402353][ T334] ? ops_free_list.part.0+0x3d0/0x3d0 [ 57.409199][ T334] process_one_work+0x98d/0x1600 [ 57.414159][ T334] ? pwq_dec_nr_in_flight+0x320/0x320 [ 57.419888][ T334] ? rwlock_bug.part.0+0x90/0x90 [ 57.424839][ T334] ? _raw_spin_lock_irq+0x41/0x50 [ 57.431200][ T334] worker_thread+0x64c/0x1120 [ 57.435901][ T334] ? process_one_work+0x1600/0x1600 [ 57.441434][ T334] kthread+0x3b1/0x4a0 [ 57.445516][ T334] ? __kthread_bind_mask+0xc0/0xc0 [ 57.453059][ T334] ret_from_fork+0x1f/0x30 [ 57.457848][ T334] Kernel panic - not syncing: panic_on_warn set ... [ 57.464431][ T334] CPU: 1 PID: 334 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 57.472492][ T334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.482541][ T334] Workqueue: netns cleanup_net [ 57.487307][ T334] Call Trace: [ 57.490582][ T334] dump_stack+0x141/0x1d7 [ 57.494914][ T334] panic+0x306/0x73d [ 57.498822][ T334] ? __warn_printk+0xf3/0xf3 [ 57.503421][ T334] ? __warn.cold+0x1a/0x44 [ 57.507835][ T334] ? __nf_unregister_net_hook+0x1eb/0x610 [ 57.513550][ T334] __warn.cold+0x35/0x44 [ 57.517787][ T334] ? __nf_unregister_net_hook+0x1eb/0x610 [ 57.523498][ T334] report_bug+0x1bd/0x210 [ 57.527821][ T334] handle_bug+0x3c/0x60 [ 57.531966][ T334] exc_invalid_op+0x14/0x40 [ 57.536460][ T334] asm_exc_invalid_op+0x12/0x20 [ 57.541302][ T334] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 57.547621][ T334] 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 15 6e 8a e8 f6 3c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 3e 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 57.567218][ T334] RSP: 0018:ffffc90001fcfbc0 EFLAGS: 00010286 [ 57.573277][ T334] RAX: 0000000000000000 RBX: ffff88814459f300 RCX: 0000000000000000 [ 57.581234][ T334] RDX: ffff888013648000 RSI: ffffffff815caa75 RDI: fffff520003f9f6a [ 57.589193][ T334] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 57.597169][ T334] R10: ffffffff815c48de R11: 0000000000000000 R12: ffff888033e98f20 [ 57.605129][ T334] R13: 0000000000000000 R14: ffff888012825c00 R15: 0000000000000001 [ 57.613091][ T334] ? wake_up_klogd.part.0+0x8e/0xd0 [ 57.618284][ T334] ? vprintk+0x95/0x260 [ 57.622439][ T334] nf_unregister_net_hooks+0x117/0x160 [ 57.627893][ T334] arpt_unregister_table_pre_exit+0x67/0x80 [ 57.633777][ T334] ? arptable_filter_net_exit+0x20/0x20 [ 57.639311][ T334] cleanup_net+0x451/0xb10 [ 57.643720][ T334] ? ops_free_list.part.0+0x3d0/0x3d0 [ 57.649089][ T334] process_one_work+0x98d/0x1600 [ 57.654026][ T334] ? pwq_dec_nr_in_flight+0x320/0x320 [ 57.659390][ T334] ? rwlock_bug.part.0+0x90/0x90 [ 57.664313][ T334] ? _raw_spin_lock_irq+0x41/0x50 [ 57.669333][ T334] worker_thread+0x64c/0x1120 [ 57.674009][ T334] ? process_one_work+0x1600/0x1600 [ 57.679198][ T334] kthread+0x3b1/0x4a0 [ 57.683252][ T334] ? __kthread_bind_mask+0xc0/0xc0 [ 57.688353][ T334] ret_from_fork+0x1f/0x30 [ 57.696566][ T334] Kernel Offset: disabled [ 57.701376][ T334] Rebooting in 86400 seconds..