[ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.18' (ECDSA) to the list of known hosts. 2021/05/06 15:22:25 fuzzer started 2021/05/06 15:22:26 connecting to host at 10.128.0.169:35469 2021/05/06 15:22:26 checking machine... 2021/05/06 15:22:26 checking revisions... 2021/05/06 15:22:26 testing simple program... syzkaller login: [ 75.503183][ T8439] chnl_net:caif_netlink_parms(): no params data found [ 75.605606][ T8439] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.616270][ T8439] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.626849][ T8439] device bridge_slave_0 entered promiscuous mode [ 75.638043][ T8439] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.646536][ T8439] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.656498][ T8439] device bridge_slave_1 entered promiscuous mode [ 75.680414][ T8439] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.697945][ T8439] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.748568][ T8439] team0: Port device team_slave_0 added [ 75.757422][ T8439] team0: Port device team_slave_1 added [ 75.780874][ T8439] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.790792][ 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. [ 75.819316][ T8439] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.835435][ T8439] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.842941][ 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. [ 75.872877][ T8439] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.909792][ T8439] device hsr_slave_0 entered promiscuous mode [ 75.918474][ T8439] device hsr_slave_1 entered promiscuous mode [ 76.068805][ T8439] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.081005][ T8439] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.098532][ T8439] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.111655][ T8439] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.142079][ T8439] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.149918][ T8439] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.158300][ T8439] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.165570][ T8439] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.211373][ T8439] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.227985][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.240095][ T36] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.251360][ T36] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.260501][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.274126][ T8439] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.287756][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.297601][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.305073][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.327334][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.336309][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.344268][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.353683][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.369878][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.379705][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.393494][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.406977][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.420382][ T8439] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.445633][ T8439] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.454121][ T4849] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.462921][ T4849] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.487417][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.508726][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.518134][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.528198][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.537270][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.549759][ T8439] device veth0_vlan entered promiscuous mode [ 76.565623][ T8439] device veth1_vlan entered promiscuous mode [ 76.596964][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.607105][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.617664][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.628011][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.642899][ T8439] device veth0_macvtap entered promiscuous mode [ 76.653694][ T8439] device veth1_macvtap entered promiscuous mode [ 76.672536][ T8439] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.681137][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.690700][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.700136][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.710122][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.724594][ T8439] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.731941][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program [ 76.742917][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.757526][ T8439] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.767081][ T8439] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.777066][ T8439] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.787395][ T8439] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.878422][ T131] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.906499][ T131] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.917246][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.958388][ T73] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.967923][ T73] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.978282][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 15:22:29 building call list... [ 77.677386][ T73] ------------[ cut here ]------------ [ 77.683257][ T73] hook not found, pf 3 num 0 [ 77.683905][ T73] WARNING: CPU: 1 PID: 73 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.703699][ T73] Modules linked in: [ 77.710156][ T73] CPU: 1 PID: 73 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 77.719769][ T73] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.731488][ T73] Workqueue: netns cleanup_net [ 77.738816][ T73] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.747234][ T73] 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 40 4d 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 19 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.773392][ T73] RSP: 0018:ffffc90000fefbc0 EFLAGS: 00010286 [ 77.781225][ T73] RAX: 0000000000000000 RBX: ffff888149bad100 RCX: 0000000000000000 [ 77.791272][ T73] RDX: ffff8880145454c0 RSI: ffffffff815c8ba5 RDI: fffff520001fdf6a [ 77.800846][ T73] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.811327][ T73] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880281d0f20 [ 77.822660][ T73] R13: 0000000000000000 R14: ffff88801bafbe00 R15: 0000000000000001 [ 77.832146][ T73] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 77.849876][ T73] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.858069][ T73] CR2: 00007fad97ab0000 CR3: 00000000207fa000 CR4: 00000000001506e0 [ 77.868745][ T73] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.878351][ T73] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.889438][ T73] Call Trace: [ 77.892768][ T73] nf_unregister_net_hooks+0x117/0x160 [ 77.899828][ T73] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.908790][ T73] ? arptable_filter_net_exit+0x20/0x20 [ 77.915518][ T73] cleanup_net+0x451/0xb10 [ 77.920167][ T73] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.932809][ T73] process_one_work+0x98d/0x1600 [ 77.939095][ T73] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.947080][ T73] ? rwlock_bug.part.0+0x90/0x90 [ 77.952071][ T73] ? _raw_spin_lock_irq+0x41/0x50 [ 77.959107][ T73] worker_thread+0x64c/0x1120 [ 77.963846][ T73] ? process_one_work+0x1600/0x1600 [ 77.972373][ T73] kthread+0x3b1/0x4a0 [ 77.977476][ T73] ? __kthread_bind_mask+0xc0/0xc0 [ 77.982719][ T73] ret_from_fork+0x1f/0x30 [ 77.990450][ T73] Kernel panic - not syncing: panic_on_warn set ... [ 77.997153][ T73] CPU: 1 PID: 73 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 78.005174][ T73] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.015356][ T73] Workqueue: netns cleanup_net [ 78.020159][ T73] Call Trace: [ 78.023631][ T73] dump_stack+0x141/0x1d7 [ 78.028093][ T73] panic+0x306/0x73d [ 78.032161][ T73] ? __warn_printk+0xf3/0xf3 [ 78.036764][ T73] ? __warn.cold+0x1a/0x44 [ 78.041198][ T73] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.047114][ T73] __warn.cold+0x35/0x44 [ 78.051827][ T73] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.057666][ T73] report_bug+0x1bd/0x210 [ 78.062040][ T73] handle_bug+0x3c/0x60 [ 78.066200][ T73] exc_invalid_op+0x14/0x40 [ 78.070701][ T73] asm_exc_invalid_op+0x12/0x20 [ 78.075602][ T73] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.082025][ T73] 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 40 4d 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 19 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.101961][ T73] RSP: 0018:ffffc90000fefbc0 EFLAGS: 00010286 [ 78.108235][ T73] RAX: 0000000000000000 RBX: ffff888149bad100 RCX: 0000000000000000 [ 78.116388][ T73] RDX: ffff8880145454c0 RSI: ffffffff815c8ba5 RDI: fffff520001fdf6a [ 78.124360][ T73] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.132346][ T73] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880281d0f20 [ 78.140313][ T73] R13: 0000000000000000 R14: ffff88801bafbe00 R15: 0000000000000001 [ 78.148289][ T73] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.153675][ T73] ? vprintk+0x95/0x260 [ 78.157841][ T73] nf_unregister_net_hooks+0x117/0x160 [ 78.163328][ T73] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.169293][ T73] ? arptable_filter_net_exit+0x20/0x20 [ 78.174860][ T73] cleanup_net+0x451/0xb10 [ 78.179293][ T73] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.184675][ T73] process_one_work+0x98d/0x1600 [ 78.189731][ T73] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.195118][ T73] ? rwlock_bug.part.0+0x90/0x90 [ 78.200090][ T73] ? _raw_spin_lock_irq+0x41/0x50 [ 78.205227][ T73] worker_thread+0x64c/0x1120 [ 78.210098][ T73] ? process_one_work+0x1600/0x1600 [ 78.215476][ T73] kthread+0x3b1/0x4a0 [ 78.219898][ T73] ? __kthread_bind_mask+0xc0/0xc0 [ 78.225103][ T73] ret_from_fork+0x1f/0x30 [ 78.231128][ T73] Kernel Offset: disabled [ 78.236036][ T73] Rebooting in 86400 seconds..