Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. 2021/05/04 04:55:10 fuzzer started 2021/05/04 04:55:10 connecting to host at 10.128.0.169:43641 2021/05/04 04:55:10 checking machine... 2021/05/04 04:55:10 checking revisions... 2021/05/04 04:55:10 testing simple program... syzkaller login: [ 77.045119][ T8439] chnl_net:caif_netlink_parms(): no params data found [ 77.106472][ T8439] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.115716][ T8439] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.126320][ T8439] device bridge_slave_0 entered promiscuous mode [ 77.136855][ T8439] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.145383][ T8439] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.154322][ T8439] device bridge_slave_1 entered promiscuous mode [ 77.177436][ T8439] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.191957][ T8439] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.215510][ T8439] team0: Port device team_slave_0 added [ 77.224639][ T8439] team0: Port device team_slave_1 added [ 77.244495][ T8439] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.253228][ T8439] 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. [ 77.283231][ T8439] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.296760][ T8439] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.304552][ T8439] 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. [ 77.333938][ T8439] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.366564][ T8439] device hsr_slave_0 entered promiscuous mode [ 77.375539][ T8439] device hsr_slave_1 entered promiscuous mode [ 77.489200][ T8439] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.503715][ T8439] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.513881][ T8439] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.526274][ T8439] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.557184][ T8439] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.564831][ T8439] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.572972][ T8439] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.581158][ T8439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.634474][ T8439] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.653825][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.668957][ T3156] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.679388][ T3156] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.688615][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.703979][ T8439] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.716443][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.726595][ T3062] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.735228][ T3062] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.751377][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.763523][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.772238][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.802901][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.814386][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.825429][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.837484][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.854272][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.865867][ T8439] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.891139][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.902682][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.916433][ T8439] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.939709][ T8659] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.965136][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.975212][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.985769][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.004211][ T8439] device veth0_vlan entered promiscuous mode [ 78.018334][ T8439] device veth1_vlan entered promiscuous mode [ 78.032997][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.041862][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.067817][ T8439] device veth0_macvtap entered promiscuous mode [ 78.075872][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.087315][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.099242][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.112435][ T8439] device veth1_macvtap entered promiscuous mode [ 78.134961][ T8439] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.145928][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.155279][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.166632][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.180309][ T8439] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.189403][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.199936][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.214640][ T8439] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.225215][ T8439] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.236601][ T8439] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.246493][ T8439] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 78.372043][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.380224][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.410527][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.432925][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.442151][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.454869][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/04 04:55:13 building call list... [ 79.167035][ T9] ------------[ cut here ]------------ [ 79.176088][ T9] hook not found, pf 3 num 0 [ 79.176746][ T9] WARNING: CPU: 0 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 79.205394][ T9] Modules linked in: [ 79.209564][ T9] CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 79.219274][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.231788][ T9] Workqueue: netns cleanup_net [ 79.236876][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.245793][ 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 90 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 79.269355][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 79.277098][ T9] RAX: 0000000000000000 RBX: ffff88802173ee00 RCX: 0000000000000000 [ 79.287190][ T9] RDX: ffff888011d78000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 79.298549][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.309605][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802de20f20 [ 79.319105][ T9] R13: 0000000000000000 R14: ffff888013798500 R15: 0000000000000001 [ 79.329262][ T9] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 79.340360][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.357451][ T9] CR2: 00007fbad3220000 CR3: 000000001cf40000 CR4: 00000000001506f0 [ 79.367159][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.376981][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.386676][ T9] Call Trace: [ 79.390417][ T9] nf_unregister_net_hooks+0x117/0x160 [ 79.398460][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.405993][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 79.413314][ T9] cleanup_net+0x451/0xb10 [ 79.418259][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.427314][ T9] process_one_work+0x98d/0x1600 [ 79.434265][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.439883][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 79.446379][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 79.453788][ T9] worker_thread+0x64c/0x1120 [ 79.458926][ T9] ? process_one_work+0x1600/0x1600 [ 79.466966][ T9] kthread+0x3b1/0x4a0 [ 79.476165][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 79.483134][ T9] ret_from_fork+0x1f/0x30 [ 79.488647][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 79.495514][ T9] CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 79.504180][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.514804][ T9] Workqueue: netns cleanup_net [ 79.520210][ T9] Call Trace: [ 79.523679][ T9] dump_stack+0x141/0x1d7 [ 79.528368][ T9] panic+0x306/0x73d [ 79.532553][ T9] ? __warn_printk+0xf3/0xf3 [ 79.537295][ T9] ? __warn.cold+0x1a/0x44 [ 79.542073][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.548350][ T9] __warn.cold+0x35/0x44 [ 79.552747][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.558604][ T9] report_bug+0x1bd/0x210 [ 79.563175][ T9] handle_bug+0x3c/0x60 [ 79.567578][ T9] exc_invalid_op+0x14/0x40 [ 79.572183][ T9] asm_exc_invalid_op+0x12/0x20 [ 79.577151][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.583704][ 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 90 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 79.603949][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 79.610139][ T9] RAX: 0000000000000000 RBX: ffff88802173ee00 RCX: 0000000000000000 [ 79.619462][ T9] RDX: ffff888011d78000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 79.627813][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.636016][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802de20f20 [ 79.644383][ T9] R13: 0000000000000000 R14: ffff888013798500 R15: 0000000000000001 [ 79.652514][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 79.657920][ T9] ? vprintk+0x95/0x260 [ 79.662195][ T9] nf_unregister_net_hooks+0x117/0x160 [ 79.668590][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.674764][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 79.680742][ T9] cleanup_net+0x451/0xb10 [ 79.685431][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.690850][ T9] process_one_work+0x98d/0x1600 [ 79.695934][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.701396][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 79.706550][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 79.711889][ T9] worker_thread+0x64c/0x1120 [ 79.717502][ T9] ? process_one_work+0x1600/0x1600 [ 79.722742][ T9] kthread+0x3b1/0x4a0 [ 79.726916][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 79.732424][ T9] ret_from_fork+0x1f/0x30 [ 79.738582][ T9] Kernel Offset: disabled [ 79.743592][ T9] Rebooting in 86400 seconds..