Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.13' (ECDSA) to the list of known hosts. 2021/04/29 23:01:36 fuzzer started 2021/04/29 23:01:37 connecting to host at 10.128.0.169:44949 2021/04/29 23:01:37 checking machine... 2021/04/29 23:01:37 checking revisions... 2021/04/29 23:01:37 testing simple program... syzkaller login: [ 77.323710][ T8428] chnl_net:caif_netlink_parms(): no params data found [ 77.381355][ T8428] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.389310][ T8428] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.398695][ T8428] device bridge_slave_0 entered promiscuous mode [ 77.409486][ T8428] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.418011][ T8428] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.426971][ T8428] device bridge_slave_1 entered promiscuous mode [ 77.448447][ T8428] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.461992][ T8428] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.487416][ T8428] team0: Port device team_slave_0 added [ 77.496649][ T8428] team0: Port device team_slave_1 added [ 77.516501][ T8428] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.526123][ T8428] 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. [ 77.557631][ T8428] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.573379][ T8428] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.581735][ T8428] 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. [ 77.611080][ T8428] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.639399][ T8428] device hsr_slave_0 entered promiscuous mode [ 77.646968][ T8428] device hsr_slave_1 entered promiscuous mode [ 77.754035][ T8428] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.765211][ T8428] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.778758][ T8428] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.788834][ T8428] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.818475][ T8428] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.826288][ T8428] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.835569][ T8428] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.843351][ T8428] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.889269][ T8428] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.907894][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.922283][ T4808] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.933821][ T4808] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.942527][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.958450][ T8428] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.972414][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.982553][ T8648] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.990958][ T8648] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.004071][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.018756][ T4808] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.026603][ T4808] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.059770][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.072714][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.089807][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.109850][ T8428] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 78.122135][ T8428] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.136267][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.146246][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.155930][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.178504][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.187298][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.204209][ T8428] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.227235][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.249654][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.258980][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.268852][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.281588][ T8428] device veth0_vlan entered promiscuous mode [ 78.298008][ T8428] device veth1_vlan entered promiscuous mode [ 78.314821][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.323555][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.340479][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.349905][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.365067][ T8428] device veth0_macvtap entered promiscuous mode [ 78.376333][ T8428] device veth1_macvtap entered promiscuous mode [ 78.396481][ T8428] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.405144][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.415709][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.424692][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.434485][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.448085][ T8428] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.459144][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.469501][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.485442][ T8428] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.497389][ T8428] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.506806][ T8428] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.518298][ T8428] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 78.632474][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.643189][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.669182][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.690837][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.701108][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.713908][ T8648] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/29 23:01:40 building call list... [ 79.393981][ T9] ------------[ cut here ]------------ [ 79.401484][ T9] hook not found, pf 3 num 0 [ 79.402137][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 79.427978][ T9] Modules linked in: [ 79.435797][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 79.448384][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.462119][ T9] Workqueue: netns cleanup_net [ 79.467590][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.481223][ 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 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 [ 79.503931][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 79.512767][ T9] RAX: 0000000000000000 RBX: ffff888021b94300 RCX: 0000000000000000 [ 79.522174][ T9] RDX: ffff888011d68000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 79.532522][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.543671][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888019688f20 [ 79.552998][ T9] R13: 0000000000000000 R14: ffff888021ac9b80 R15: 0000000000000001 [ 79.565233][ T9] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 79.578250][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.589001][ T9] CR2: 00007f2af33eb010 CR3: 0000000027bdb000 CR4: 00000000001506e0 [ 79.599299][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.611792][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.628724][ T9] Call Trace: [ 79.635216][ T9] nf_unregister_net_hooks+0x117/0x160 [ 79.642276][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.648322][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 79.657267][ T9] cleanup_net+0x451/0xb10 [ 79.663006][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.668532][ T9] process_one_work+0x98d/0x1600 [ 79.677035][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.685208][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 79.693187][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 79.698758][ T9] worker_thread+0x64c/0x1120 [ 79.708406][ T9] ? process_one_work+0x1600/0x1600 [ 79.717217][ T9] kthread+0x3b1/0x4a0 [ 79.722421][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 79.728024][ T9] ret_from_fork+0x1f/0x30 [ 79.735862][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 79.743450][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 79.751371][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.762091][ T9] Workqueue: netns cleanup_net [ 79.766876][ T9] Call Trace: [ 79.770524][ T9] dump_stack+0x141/0x1d7 [ 79.775169][ T9] panic+0x306/0x73d [ 79.779679][ T9] ? __warn_printk+0xf3/0xf3 [ 79.784642][ T9] ? __warn.cold+0x1a/0x44 [ 79.789484][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.795740][ T9] __warn.cold+0x35/0x44 [ 79.800090][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.806226][ T9] report_bug+0x1bd/0x210 [ 79.810959][ T9] handle_bug+0x3c/0x60 [ 79.815155][ T9] exc_invalid_op+0x14/0x40 [ 79.819771][ T9] asm_exc_invalid_op+0x12/0x20 [ 79.824634][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.831186][ 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 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 [ 79.851682][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 79.857945][ T9] RAX: 0000000000000000 RBX: ffff888021b94300 RCX: 0000000000000000 [ 79.866484][ T9] RDX: ffff888011d68000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 79.874715][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.882699][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888019688f20 [ 79.890887][ T9] R13: 0000000000000000 R14: ffff888021ac9b80 R15: 0000000000000001 [ 79.898974][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 79.904461][ T9] ? vprintk+0x95/0x260 [ 79.909325][ T9] nf_unregister_net_hooks+0x117/0x160 [ 79.914822][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.921310][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 79.927053][ T9] cleanup_net+0x451/0xb10 [ 79.931835][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.938046][ T9] process_one_work+0x98d/0x1600 [ 79.943295][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.949145][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 79.954170][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 79.959616][ T9] worker_thread+0x64c/0x1120 [ 79.964730][ T9] ? process_one_work+0x1600/0x1600 [ 79.971866][ T9] kthread+0x3b1/0x4a0 [ 79.976057][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 79.981612][ T9] ret_from_fork+0x1f/0x30 [ 79.987511][ T9] Kernel Offset: disabled [ 79.992290][ T9] Rebooting in 86400 seconds..