Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. 2021/04/27 22:02:26 fuzzer started 2021/04/27 22:02:26 connecting to host at 10.128.0.169:40163 2021/04/27 22:02:26 checking machine... 2021/04/27 22:02:26 checking revisions... 2021/04/27 22:02:26 testing simple program... syzkaller login: [ 69.831902][ T8444] chnl_net:caif_netlink_parms(): no params data found [ 69.882390][ T8444] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.890592][ T8444] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.901279][ T8444] device bridge_slave_0 entered promiscuous mode [ 69.912220][ T8444] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.919489][ T8444] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.928496][ T8444] device bridge_slave_1 entered promiscuous mode [ 69.950011][ T8444] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.962443][ T8444] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.985422][ T8444] team0: Port device team_slave_0 added [ 69.992727][ T8444] team0: Port device team_slave_1 added [ 70.011578][ T8444] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.018967][ T8444] 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. [ 70.045256][ T8444] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.061636][ T8444] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.069580][ T8444] 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. [ 70.096686][ T8444] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.127308][ T8444] device hsr_slave_0 entered promiscuous mode [ 70.134935][ T8444] device hsr_slave_1 entered promiscuous mode [ 70.242690][ T8444] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.253844][ T8444] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.265414][ T8444] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.276279][ T8444] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.302979][ T8444] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.310369][ T8444] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.318862][ T8444] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.326411][ T8444] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.376317][ T8444] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.391981][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.403897][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.415174][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.423611][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.439554][ T8444] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.451592][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.461137][ T2939] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.468600][ T2939] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.496757][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.506975][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.514588][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.523408][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.532313][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.548383][ T8444] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 70.560242][ T8444] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.574437][ T8666] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.582996][ T8666] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.593044][ T8666] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.602657][ T3144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.622577][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.630905][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.649850][ T8444] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.670319][ T3144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.691940][ T8444] device veth0_vlan entered promiscuous mode [ 70.700390][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.710161][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.718969][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.733551][ T8444] device veth1_vlan entered promiscuous mode [ 70.757118][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.766180][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.775142][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.787745][ T8444] device veth0_macvtap entered promiscuous mode [ 70.800476][ T8444] device veth1_macvtap entered promiscuous mode [ 70.818101][ T8444] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.827660][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.837507][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.850706][ T8444] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.859816][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.870293][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.882441][ T8444] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.892819][ T8444] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.902848][ T8444] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.912179][ T8444] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.006149][ T263] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.034802][ T263] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.047160][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.067810][ T203] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.080356][ T203] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.091195][ T3144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program 2021/04/27 22:02:29 building call list... [ 71.773439][ T289] ------------[ cut here ]------------ [ 71.780468][ T289] hook not found, pf 3 num 0 [ 71.781235][ T289] WARNING: CPU: 1 PID: 289 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 71.801269][ T289] Modules linked in: [ 71.806204][ T289] CPU: 1 PID: 289 Comm: kworker/u4:6 Not tainted 5.12.0-rc7-syzkaller #0 [ 71.817476][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.828944][ T289] Workqueue: netns cleanup_net [ 71.834748][ T289] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 71.842216][ T289] 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 07 8a 01 <0f> 0b e9 e5 00 00 00 e8 f9 34 35 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 71.864075][ T289] RSP: 0018:ffffc90001d1fbc0 EFLAGS: 00010286 [ 71.870417][ T289] RAX: 0000000000000000 RBX: ffff888021130900 RCX: 0000000000000000 [ 71.880653][ T289] RDX: ffff888012461c40 RSI: ffffffff815c5205 RDI: fffff520003a3f6a [ 71.891230][ T289] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 71.914133][ T289] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff88802f0e0f20 [ 71.922407][ T289] R13: 0000000000000000 R14: ffff888018795f80 R15: 0000000000000001 [ 71.931452][ T289] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 71.941042][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.949316][ T289] CR2: 000000c000a00000 CR3: 0000000028e0f000 CR4: 00000000001506f0 [ 71.958402][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.967111][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.984312][ T289] Call Trace: [ 71.987895][ T289] nf_unregister_net_hooks+0x117/0x160 [ 71.993863][ T289] arpt_unregister_table_pre_exit+0x67/0x80 [ 72.002995][ T289] ? arptable_filter_net_exit+0x20/0x20 [ 72.010453][ T289] cleanup_net+0x451/0xb10 [ 72.016050][ T289] ? ops_free_list.part.0+0x3d0/0x3d0 [ 72.021679][ T289] process_one_work+0x98d/0x1600 [ 72.027459][ T289] ? pwq_dec_nr_in_flight+0x320/0x320 [ 72.033064][ T289] ? rwlock_bug.part.0+0x90/0x90 [ 72.038839][ T289] ? _raw_spin_lock_irq+0x41/0x50 [ 72.045638][ T289] worker_thread+0x64c/0x1120 [ 72.050691][ T289] ? process_one_work+0x1600/0x1600 [ 72.060454][ T289] kthread+0x3b1/0x4a0 [ 72.065273][ T289] ? __kthread_bind_mask+0xc0/0xc0 [ 72.071140][ T289] ret_from_fork+0x1f/0x30 [ 72.076188][ T289] Kernel panic - not syncing: panic_on_warn set ... [ 72.082986][ T289] CPU: 0 PID: 289 Comm: kworker/u4:6 Not tainted 5.12.0-rc7-syzkaller #0 [ 72.091524][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.102292][ T289] Workqueue: netns cleanup_net [ 72.107168][ T289] Call Trace: [ 72.110563][ T289] dump_stack+0x141/0x1d7 [ 72.116141][ T289] panic+0x306/0x73d [ 72.120155][ T289] ? __warn_printk+0xf3/0xf3 [ 72.124806][ T289] ? __warn.cold+0x1a/0x44 [ 72.129431][ T289] ? __nf_unregister_net_hook+0x1eb/0x610 [ 72.135217][ T289] __warn.cold+0x35/0x44 [ 72.139903][ T289] ? __nf_unregister_net_hook+0x1eb/0x610 [ 72.146047][ T289] report_bug+0x1bd/0x210 [ 72.150446][ T289] handle_bug+0x3c/0x60 [ 72.154747][ T289] exc_invalid_op+0x14/0x40 [ 72.160330][ T289] asm_exc_invalid_op+0x12/0x20 [ 72.165319][ T289] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 72.171702][ T289] 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 07 8a 01 <0f> 0b e9 e5 00 00 00 e8 f9 34 35 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 72.191532][ T289] RSP: 0018:ffffc90001d1fbc0 EFLAGS: 00010286 [ 72.198435][ T289] RAX: 0000000000000000 RBX: ffff888021130900 RCX: 0000000000000000 [ 72.206700][ T289] RDX: ffff888012461c40 RSI: ffffffff815c5205 RDI: fffff520003a3f6a [ 72.215128][ T289] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 72.224029][ T289] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff88802f0e0f20 [ 72.232486][ T289] R13: 0000000000000000 R14: ffff888018795f80 R15: 0000000000000001 [ 72.240870][ T289] ? wake_up_klogd.part.0+0x8e/0xd0 [ 72.246381][ T289] ? vprintk_func+0x95/0x1e0 [ 72.251231][ T289] nf_unregister_net_hooks+0x117/0x160 [ 72.256745][ T289] arpt_unregister_table_pre_exit+0x67/0x80 [ 72.262750][ T289] ? arptable_filter_net_exit+0x20/0x20 [ 72.268458][ T289] cleanup_net+0x451/0xb10 [ 72.273001][ T289] ? ops_free_list.part.0+0x3d0/0x3d0 [ 72.278752][ T289] process_one_work+0x98d/0x1600 [ 72.283725][ T289] ? pwq_dec_nr_in_flight+0x320/0x320 [ 72.289126][ T289] ? rwlock_bug.part.0+0x90/0x90 [ 72.294490][ T289] ? _raw_spin_lock_irq+0x41/0x50 [ 72.299829][ T289] worker_thread+0x64c/0x1120 [ 72.304658][ T289] ? process_one_work+0x1600/0x1600 [ 72.310703][ T289] kthread+0x3b1/0x4a0 [ 72.314804][ T289] ? __kthread_bind_mask+0xc0/0xc0 [ 72.320184][ T289] ret_from_fork+0x1f/0x30 [ 72.325975][ T289] Kernel Offset: disabled [ 72.330776][ T289] Rebooting in 86400 seconds..