Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.108' (ECDSA) to the list of known hosts. 2021/04/27 22:52:24 fuzzer started 2021/04/27 22:52:24 connecting to host at 10.128.0.169:45975 2021/04/27 22:52:24 checking machine... 2021/04/27 22:52:24 checking revisions... 2021/04/27 22:52:24 testing simple program... syzkaller login: [ 69.425097][ T8404] chnl_net:caif_netlink_parms(): no params data found [ 69.493321][ T8404] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.502481][ T8404] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.511838][ T8404] device bridge_slave_0 entered promiscuous mode [ 69.521783][ T8404] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.530318][ T8404] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.538262][ T8404] device bridge_slave_1 entered promiscuous mode [ 69.560220][ T8404] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.571615][ T8404] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.596415][ T8404] team0: Port device team_slave_0 added [ 69.604674][ T8404] team0: Port device team_slave_1 added [ 69.622498][ T8404] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.629716][ T8404] 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. [ 69.656774][ T8404] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.671990][ T8404] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.679989][ T8404] 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. [ 69.707333][ T8404] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.734887][ T8404] device hsr_slave_0 entered promiscuous mode [ 69.741924][ T8404] device hsr_slave_1 entered promiscuous mode [ 69.847193][ T8404] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.858554][ T8404] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.870162][ T8404] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.881153][ T8404] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.909599][ T8404] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.917194][ T8404] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.925564][ T8404] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.932739][ T8404] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.976733][ T8404] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.991242][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.005380][ T4542] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.015084][ T4542] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.023548][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.036475][ T8404] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.048265][ T3797] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.058129][ T3797] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.065487][ T3797] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.091422][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.101382][ T4542] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.109083][ T4542] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.118777][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.127605][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.144679][ T8404] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 70.155797][ T8404] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.169279][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.178047][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.187475][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.197229][ T4542] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.219797][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.228525][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.242792][ T8404] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.264017][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.285731][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.295332][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.304422][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.316662][ T8404] device veth0_vlan entered promiscuous mode [ 70.330426][ T8404] device veth1_vlan entered promiscuous mode [ 70.353779][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.362614][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.372029][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.383698][ T8404] device veth0_macvtap entered promiscuous mode [ 70.396663][ T8404] device veth1_macvtap entered promiscuous mode [ 70.410009][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.425002][ T8404] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.434613][ T3797] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.445267][ T3797] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.458066][ T8404] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.468220][ T4820] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.477500][ T4820] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.494319][ T8404] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.503499][ T8404] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.515444][ T8404] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.524525][ T8404] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.625169][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.644318][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.665592][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.680130][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.688178][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.699032][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/27 22:52:27 building call list... executing program [ 73.087637][ T8397] can: request_module (can-proto-0) failed. [ 73.103054][ T8397] can: request_module (can-proto-0) failed. [ 73.115336][ T8397] can: request_module (can-proto-0) failed. [ 73.285615][ T9] ------------[ cut here ]------------ [ 73.300250][ T9] hook not found, pf 3 num 0 [ 73.300890][ T9] WARNING: CPU: 0 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 73.319163][ T9] Modules linked in: [ 73.324061][ T9] CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-rc7-syzkaller #0 [ 73.334792][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.347100][ T9] Workqueue: netns cleanup_net [ 73.352993][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.362153][ 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 00 68 6c 8a e8 2e 37 8a 01 <0f> 0b e9 e5 00 00 00 e8 f9 34 35 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 73.384173][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 73.392990][ T9] RAX: 0000000000000000 RBX: ffff888021c73700 RCX: 0000000000000000 [ 73.403185][ T9] RDX: ffff888011578000 RSI: ffffffff815c5205 RDI: fffff5200019cf6a [ 73.412504][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.422674][ T9] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff888016e20f20 [ 73.431424][ T9] R13: 0000000000000000 R14: ffff88801253c580 R15: 0000000000000001 [ 73.441714][ T9] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 73.451704][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.458320][ T9] CR2: 00007f6b0d7c8000 CR3: 000000001d298000 CR4: 00000000001506f0 [ 73.469034][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.477781][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.488130][ T9] Call Trace: [ 73.492284][ T9] nf_unregister_net_hooks+0x117/0x160 [ 73.497941][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.506322][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 73.513911][ T9] cleanup_net+0x451/0xb10 [ 73.522136][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.527570][ T9] process_one_work+0x98d/0x1600 [ 73.533874][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.542202][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 73.547555][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 73.553795][ T9] worker_thread+0x64c/0x1120 [ 73.559684][ T9] ? process_one_work+0x1600/0x1600 [ 73.566459][ T9] kthread+0x3b1/0x4a0 [ 73.571687][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 73.577843][ T9] ret_from_fork+0x1f/0x30 [ 73.583444][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 73.590428][ T9] CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-rc7-syzkaller #0 [ 73.599055][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.610213][ T9] Workqueue: netns cleanup_net [ 73.615330][ T9] Call Trace: [ 73.618834][ T9] dump_stack+0x141/0x1d7 [ 73.623471][ T9] panic+0x306/0x73d [ 73.627693][ T9] ? __warn_printk+0xf3/0xf3 [ 73.632423][ T9] ? __warn.cold+0x1a/0x44 [ 73.637331][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.644521][ T9] __warn.cold+0x35/0x44 [ 73.648984][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.654744][ T9] report_bug+0x1bd/0x210 [ 73.659133][ T9] handle_bug+0x3c/0x60 [ 73.663326][ T9] exc_invalid_op+0x14/0x40 [ 73.669390][ T9] asm_exc_invalid_op+0x12/0x20 [ 73.674375][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.680973][ 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 00 68 6c 8a e8 2e 37 8a 01 <0f> 0b e9 e5 00 00 00 e8 f9 34 35 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 73.700845][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 73.706902][ T9] RAX: 0000000000000000 RBX: ffff888021c73700 RCX: 0000000000000000 [ 73.714881][ T9] RDX: ffff888011578000 RSI: ffffffff815c5205 RDI: fffff5200019cf6a [ 73.722943][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.731483][ T9] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff888016e20f20 [ 73.739745][ T9] R13: 0000000000000000 R14: ffff88801253c580 R15: 0000000000000001 [ 73.747818][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 73.753038][ T9] ? vprintk_func+0x95/0x1e0 [ 73.757817][ T9] nf_unregister_net_hooks+0x117/0x160 [ 73.763488][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.769385][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 73.774924][ T9] cleanup_net+0x451/0xb10 [ 73.779331][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.784716][ T9] process_one_work+0x98d/0x1600 [ 73.789702][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.795097][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 73.800163][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 73.805315][ T9] worker_thread+0x64c/0x1120 [ 73.810033][ T9] ? process_one_work+0x1600/0x1600 [ 73.815446][ T9] kthread+0x3b1/0x4a0 [ 73.819638][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 73.824851][ T9] ret_from_fork+0x1f/0x30 [ 73.830731][ T9] Kernel Offset: disabled [ 73.835208][ T9] Rebooting in 86400 seconds..