Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts. 2021/05/07 22:47:00 fuzzer started 2021/05/07 22:47:00 connecting to host at 10.128.0.169:43447 2021/05/07 22:47:00 checking machine... 2021/05/07 22:47:00 checking revisions... 2021/05/07 22:47:00 testing simple program... syzkaller login: [ 72.565955][ T8429] chnl_net:caif_netlink_parms(): no params data found [ 72.624990][ T8429] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.632901][ T8429] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.640955][ T8429] device bridge_slave_0 entered promiscuous mode [ 72.651338][ T8429] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.659994][ T8429] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.668654][ T8429] device bridge_slave_1 entered promiscuous mode [ 72.690448][ T8429] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.702344][ T8429] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.724626][ T8429] team0: Port device team_slave_0 added [ 72.732514][ T8429] team0: Port device team_slave_1 added [ 72.751180][ T8429] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.758392][ T8429] 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. [ 72.784570][ T8429] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.797497][ T8429] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.806178][ T8429] 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. [ 72.833880][ T8429] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.861272][ T8429] device hsr_slave_0 entered promiscuous mode [ 72.868553][ T8429] device hsr_slave_1 entered promiscuous mode [ 72.981763][ T8429] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.997952][ T8429] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.010398][ T8429] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.022367][ T8429] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.065919][ T8429] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.073303][ T8429] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.081604][ T8429] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.088880][ T8429] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.170874][ T8429] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.188176][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.200002][ T27] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.209633][ T27] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.218124][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.232442][ T8429] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.244979][ T8653] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.253542][ T8653] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.260585][ T8653] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.273039][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.283848][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.290920][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.315376][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.324622][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.344109][ T8429] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.355392][ T8429] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.368174][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.376842][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.386146][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.394835][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.414820][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.422393][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.438160][ T8429] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.458694][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.482268][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.491031][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.501155][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.513531][ T8429] device veth0_vlan entered promiscuous mode [ 73.526833][ T8429] device veth1_vlan entered promiscuous mode [ 73.550699][ T8652] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.559542][ T8652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.572656][ T8429] device veth0_macvtap entered promiscuous mode [ 73.583575][ T8429] device veth1_macvtap entered promiscuous mode [ 73.603953][ T8429] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.611703][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.621187][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.630471][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.639284][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.653041][ T8429] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.665243][ T8429] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.675294][ T8429] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.689187][ T8429] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.698712][ T8429] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.710662][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.719801][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.811849][ T124] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.819929][ T124] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.839208][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 executing program [ 73.858140][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.858701][ T8653] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.894633][ T8653] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/07 22:47:04 building call list... [ 74.575425][ T124] ------------[ cut here ]------------ [ 74.582327][ T124] hook not found, pf 3 num 0 [ 74.582946][ T124] WARNING: CPU: 1 PID: 124 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.600461][ T124] Modules linked in: [ 74.606728][ T124] CPU: 1 PID: 124 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 74.616152][ T124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.627760][ T124] Workqueue: netns cleanup_net [ 74.634081][ T124] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.640529][ T124] 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 [ 74.662960][ T124] RSP: 0018:ffffc900013bfbc0 EFLAGS: 00010286 [ 74.669189][ T124] RAX: 0000000000000000 RBX: ffff88814a191d00 RCX: 0000000000000000 [ 74.679204][ T124] RDX: ffff888012d78000 RSI: ffffffff815c8ba5 RDI: fffff52000277f6a [ 74.692021][ T124] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.700481][ T124] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888038a40f20 [ 74.711938][ T124] R13: 0000000000000000 R14: ffff88801a524980 R15: 0000000000000001 [ 74.720062][ T124] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.730968][ T124] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.739023][ T124] CR2: 00007f5c652d0010 CR3: 000000002ef82000 CR4: 00000000001506e0 [ 74.748223][ T124] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.757447][ T124] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.767766][ T124] Call Trace: [ 74.773406][ T124] nf_unregister_net_hooks+0x117/0x160 [ 74.779024][ T124] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.787235][ T124] ? arptable_filter_net_exit+0x20/0x20 [ 74.794534][ T124] cleanup_net+0x451/0xb10 [ 74.799064][ T124] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.806347][ T124] process_one_work+0x98d/0x1600 [ 74.811409][ T124] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.818853][ T124] ? rwlock_bug.part.0+0x90/0x90 [ 74.825401][ T124] ? _raw_spin_lock_irq+0x41/0x50 [ 74.831000][ T124] worker_thread+0x64c/0x1120 [ 74.837649][ T124] ? process_one_work+0x1600/0x1600 [ 74.845589][ T124] kthread+0x3b1/0x4a0 [ 74.849770][ T124] ? __kthread_bind_mask+0xc0/0xc0 [ 74.856992][ T124] ret_from_fork+0x1f/0x30 [ 74.861548][ T124] Kernel panic - not syncing: panic_on_warn set ... [ 74.868147][ T124] CPU: 1 PID: 124 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 74.876223][ T124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.886291][ T124] Workqueue: netns cleanup_net [ 74.891079][ T124] Call Trace: [ 74.894389][ T124] dump_stack+0x141/0x1d7 [ 74.898753][ T124] panic+0x306/0x73d [ 74.902754][ T124] ? __warn_printk+0xf3/0xf3 [ 74.907371][ T124] ? __warn.cold+0x1a/0x44 [ 74.911789][ T124] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.917535][ T124] __warn.cold+0x35/0x44 [ 74.921795][ T124] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.927534][ T124] report_bug+0x1bd/0x210 [ 74.931892][ T124] handle_bug+0x3c/0x60 [ 74.936051][ T124] exc_invalid_op+0x14/0x40 [ 74.940558][ T124] asm_exc_invalid_op+0x12/0x20 [ 74.945434][ T124] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.951775][ T124] 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 [ 74.971380][ T124] RSP: 0018:ffffc900013bfbc0 EFLAGS: 00010286 [ 74.977532][ T124] RAX: 0000000000000000 RBX: ffff88814a191d00 RCX: 0000000000000000 [ 74.985505][ T124] RDX: ffff888012d78000 RSI: ffffffff815c8ba5 RDI: fffff52000277f6a [ 74.993474][ T124] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.001440][ T124] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888038a40f20 [ 75.009406][ T124] R13: 0000000000000000 R14: ffff88801a524980 R15: 0000000000000001 [ 75.017375][ T124] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.022584][ T124] ? vprintk+0x95/0x260 [ 75.026777][ T124] nf_unregister_net_hooks+0x117/0x160 [ 75.032343][ T124] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.038250][ T124] ? arptable_filter_net_exit+0x20/0x20 [ 75.043794][ T124] cleanup_net+0x451/0xb10 [ 75.048229][ T124] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.053611][ T124] process_one_work+0x98d/0x1600 [ 75.058569][ T124] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.063943][ T124] ? rwlock_bug.part.0+0x90/0x90 [ 75.068912][ T124] ? _raw_spin_lock_irq+0x41/0x50 [ 75.073971][ T124] worker_thread+0x64c/0x1120 [ 75.078747][ T124] ? process_one_work+0x1600/0x1600 [ 75.083947][ T124] kthread+0x3b1/0x4a0 [ 75.088053][ T124] ? __kthread_bind_mask+0xc0/0xc0 [ 75.093187][ T124] ret_from_fork+0x1f/0x30 [ 75.098706][ T124] Kernel Offset: disabled [ 75.103129][ T124] Rebooting in 86400 seconds..