Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.24' (ECDSA) to the list of known hosts. 2021/05/06 15:56:17 fuzzer started 2021/05/06 15:56:17 connecting to host at 10.128.0.169:43691 2021/05/06 15:56:17 checking machine... 2021/05/06 15:56:17 checking revisions... 2021/05/06 15:56:17 testing simple program... syzkaller login: [ 72.678679][ T8421] chnl_net:caif_netlink_parms(): no params data found [ 72.740418][ T8421] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.748745][ T8421] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.758461][ T8421] device bridge_slave_0 entered promiscuous mode [ 72.769100][ T8421] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.776558][ T8421] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.784472][ T8421] device bridge_slave_1 entered promiscuous mode [ 72.808220][ T8421] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.819340][ T8421] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.843127][ T8421] team0: Port device team_slave_0 added [ 72.850609][ T8421] team0: Port device team_slave_1 added [ 72.870294][ T8421] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.877871][ T8421] 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. [ 72.904431][ T8421] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.917304][ T8421] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.924528][ T8421] 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. [ 72.950939][ T8421] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.993104][ T8421] device hsr_slave_0 entered promiscuous mode [ 73.000297][ T8421] device hsr_slave_1 entered promiscuous mode [ 73.110810][ T8421] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.121780][ T8421] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.132212][ T8421] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.144164][ T8421] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.170354][ T8421] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.177863][ T8421] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.186517][ T8421] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.193836][ T8421] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.241336][ T8421] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.257535][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.269537][ T3796] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.278738][ T3796] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.288644][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.303992][ T8421] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.316861][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.325718][ T3796] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.332796][ T3796] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.359762][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.368599][ T8643] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.375827][ T8643] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.384328][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.393685][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.405444][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.419604][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.431883][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.443709][ T8421] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.466548][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.474291][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.489253][ T8421] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.509391][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.529727][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.539747][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.548480][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.559470][ T8421] device veth0_vlan entered promiscuous mode [ 73.574711][ T8421] device veth1_vlan entered promiscuous mode [ 73.598751][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.607630][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.616977][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.629448][ T8421] device veth0_macvtap entered promiscuous mode [ 73.638012][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.649980][ T8421] device veth1_macvtap entered promiscuous mode [ 73.669619][ T8421] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.678260][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.688608][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.701258][ T8421] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.709101][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.719067][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.730738][ T8421] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.740074][ T8421] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.749008][ T8421] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.759463][ T8421] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.865495][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.865571][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.869455][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 73.927701][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.936431][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.948743][ T4255] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 15:56:20 building call list... [ 74.579875][ T262] ------------[ cut here ]------------ [ 74.594757][ T262] hook not found, pf 3 num 0 [ 74.595458][ T262] WARNING: CPU: 0 PID: 262 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.613538][ T262] Modules linked in: [ 74.619083][ T262] CPU: 0 PID: 262 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 74.628980][ T262] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.641625][ T262] Workqueue: netns cleanup_net [ 74.651643][ T262] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.658140][ T262] 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 50 5b 8a 01 <0f> 0b e9 e5 00 00 00 e8 69 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 74.685909][ T262] RSP: 0018:ffffc90001b7fbc0 EFLAGS: 00010286 [ 74.692204][ T262] RAX: 0000000000000000 RBX: ffff88814a003400 RCX: 0000000000000000 [ 74.701863][ T262] RDX: ffff8880155f0000 RSI: ffffffff815c8ba5 RDI: fffff5200036ff6a [ 74.710383][ T262] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.720505][ T262] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888030318f20 [ 74.729170][ T262] R13: 0000000000000000 R14: ffff888017d2e600 R15: 0000000000000001 [ 74.738782][ T262] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.751658][ T262] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.760903][ T262] CR2: 000055f4321ba188 CR3: 000000000bc8e000 CR4: 00000000001506f0 [ 74.769418][ T262] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.779919][ T262] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.788094][ T262] Call Trace: [ 74.791405][ T262] nf_unregister_net_hooks+0x117/0x160 [ 74.798587][ T262] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.804520][ T262] ? arptable_filter_net_exit+0x20/0x20 [ 74.811838][ T262] cleanup_net+0x451/0xb10 [ 74.818102][ T262] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.823563][ T262] process_one_work+0x98d/0x1600 [ 74.832268][ T262] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.839373][ T262] ? rwlock_bug.part.0+0x90/0x90 [ 74.844359][ T262] ? _raw_spin_lock_irq+0x41/0x50 [ 74.849613][ T262] worker_thread+0x64c/0x1120 [ 74.854335][ T262] ? process_one_work+0x1600/0x1600 [ 74.861207][ T262] kthread+0x3b1/0x4a0 [ 74.866136][ T262] ? __kthread_bind_mask+0xc0/0xc0 [ 74.871285][ T262] ret_from_fork+0x1f/0x30 [ 74.877444][ T262] Kernel panic - not syncing: panic_on_warn set ... [ 74.884229][ T262] CPU: 0 PID: 262 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 74.892304][ T262] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.902373][ T262] Workqueue: netns cleanup_net [ 74.907171][ T262] Call Trace: [ 74.910472][ T262] dump_stack+0x141/0x1d7 [ 74.914818][ T262] panic+0x306/0x73d [ 74.918753][ T262] ? __warn_printk+0xf3/0xf3 [ 74.923369][ T262] ? __warn.cold+0x1a/0x44 [ 74.927798][ T262] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.933536][ T262] __warn.cold+0x35/0x44 [ 74.937810][ T262] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.943555][ T262] report_bug+0x1bd/0x210 [ 74.947993][ T262] handle_bug+0x3c/0x60 [ 74.952158][ T262] exc_invalid_op+0x14/0x40 [ 74.956748][ T262] asm_exc_invalid_op+0x12/0x20 [ 74.961630][ T262] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.967974][ T262] 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 50 5b 8a 01 <0f> 0b e9 e5 00 00 00 e8 69 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 74.987680][ T262] RSP: 0018:ffffc90001b7fbc0 EFLAGS: 00010286 [ 74.993757][ T262] RAX: 0000000000000000 RBX: ffff88814a003400 RCX: 0000000000000000 [ 75.001747][ T262] RDX: ffff8880155f0000 RSI: ffffffff815c8ba5 RDI: fffff5200036ff6a [ 75.009729][ T262] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.017709][ T262] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888030318f20 [ 75.025870][ T262] R13: 0000000000000000 R14: ffff888017d2e600 R15: 0000000000000001 [ 75.033901][ T262] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.039128][ T262] ? vprintk+0x95/0x260 [ 75.043322][ T262] nf_unregister_net_hooks+0x117/0x160 [ 75.048805][ T262] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.054714][ T262] ? arptable_filter_net_exit+0x20/0x20 [ 75.060299][ T262] cleanup_net+0x451/0xb10 [ 75.064740][ T262] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.070491][ T262] process_one_work+0x98d/0x1600 [ 75.075511][ T262] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.081084][ T262] ? rwlock_bug.part.0+0x90/0x90 [ 75.086071][ T262] ? _raw_spin_lock_irq+0x41/0x50 [ 75.091232][ T262] worker_thread+0x64c/0x1120 [ 75.095950][ T262] ? process_one_work+0x1600/0x1600 [ 75.101172][ T262] kthread+0x3b1/0x4a0 [ 75.105254][ T262] ? __kthread_bind_mask+0xc0/0xc0 [ 75.110378][ T262] ret_from_fork+0x1f/0x30 [ 75.116328][ T262] Kernel Offset: disabled [ 75.120876][ T262] Rebooting in 86400 seconds..