Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.89' (ECDSA) to the list of known hosts. 2021/05/05 00:30:28 fuzzer started 2021/05/05 00:30:28 connecting to host at 10.128.0.169:40891 2021/05/05 00:30:28 checking machine... 2021/05/05 00:30:28 checking revisions... 2021/05/05 00:30:28 testing simple program... syzkaller login: [ 75.576174][ T8420] chnl_net:caif_netlink_parms(): no params data found [ 75.635917][ T8420] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.645082][ T8420] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.654513][ T8420] device bridge_slave_0 entered promiscuous mode [ 75.664639][ T8420] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.673405][ T8420] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.682617][ T8420] device bridge_slave_1 entered promiscuous mode [ 75.704885][ T8420] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.716405][ T8420] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.743217][ T8420] team0: Port device team_slave_0 added [ 75.750874][ T8420] team0: Port device team_slave_1 added [ 75.769843][ T8420] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.776957][ T8420] 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. [ 75.805460][ T8420] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.818715][ T8420] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.827057][ T8420] 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. [ 75.853862][ T8420] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.886106][ T8420] device hsr_slave_0 entered promiscuous mode [ 75.893895][ T8420] device hsr_slave_1 entered promiscuous mode [ 76.008729][ T8420] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.021800][ T8420] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.032325][ T8420] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.042064][ T8420] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.070481][ T8420] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.077881][ T8420] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.086604][ T8420] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.094295][ T8420] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.143612][ T8420] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.159851][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.173241][ T3800] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.182872][ T3800] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.192337][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.206047][ T8420] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.221282][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.231212][ T8642] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.238961][ T8642] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.251913][ T59] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.261556][ T59] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.268975][ T59] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.289665][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.300503][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.315130][ T8642] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.333404][ T8420] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 76.347191][ T8420] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 76.362016][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.371352][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.382945][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.399816][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.408780][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.425492][ T8420] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.447279][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.471771][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.482547][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.491864][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.503972][ T8420] device veth0_vlan entered promiscuous mode [ 76.518111][ T8420] device veth1_vlan entered promiscuous mode [ 76.543912][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.553253][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.563211][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.575033][ T8420] device veth0_macvtap entered promiscuous mode [ 76.584451][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.597020][ T8420] device veth1_macvtap entered promiscuous mode [ 76.617193][ T8420] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.626550][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.636724][ T3800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.651594][ T8420] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.660322][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.671176][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.683372][ T8420] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.695241][ T8420] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.705299][ T8420] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.715620][ T8420] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.805438][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.832475][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 76.852722][ T59] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.873231][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.883671][ T25] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.894934][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/05 00:30:32 building call list... [ 77.613287][ T25] ------------[ cut here ]------------ [ 77.644467][ T25] hook not found, pf 3 num 0 [ 77.644892][ T25] WARNING: CPU: 0 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.660920][ T25] Modules linked in: [ 77.664932][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 77.673850][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.684579][ T25] Workqueue: netns cleanup_net [ 77.689859][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.696424][ T25] 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 70 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 89 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.718328][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 77.727414][ T25] RAX: 0000000000000000 RBX: ffff888024500400 RCX: 0000000000000000 [ 77.736411][ T25] RDX: ffff888011e354c0 RSI: ffffffff815c8ba5 RDI: fffff520001bff6a [ 77.745571][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.754773][ T25] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801bf70f20 [ 77.763525][ T25] R13: 0000000000000000 R14: ffff88801baf1f80 R15: 0000000000000001 [ 77.772217][ T25] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 77.782981][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.790334][ T25] CR2: 000000c000a00000 CR3: 000000002973a000 CR4: 00000000001506f0 [ 77.798347][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.810713][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.820134][ T25] Call Trace: [ 77.823467][ T25] nf_unregister_net_hooks+0x117/0x160 [ 77.830600][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.836727][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 77.845424][ T25] cleanup_net+0x451/0xb10 [ 77.850815][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.856258][ T25] process_one_work+0x98d/0x1600 [ 77.864126][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.870866][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 77.876111][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 77.887598][ T25] worker_thread+0x64c/0x1120 [ 77.894575][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 77.902082][ T25] ? process_one_work+0x1600/0x1600 [ 77.908061][ T25] kthread+0x3b1/0x4a0 [ 77.914440][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 77.921896][ T25] ret_from_fork+0x1f/0x30 [ 77.926834][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 77.934712][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 77.943716][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.954190][ T25] Workqueue: netns cleanup_net [ 77.959040][ T25] Call Trace: [ 77.962599][ T25] dump_stack+0x141/0x1d7 [ 77.969031][ T25] panic+0x306/0x73d [ 77.973301][ T25] ? __warn_printk+0xf3/0xf3 [ 77.978388][ T25] ? __warn.cold+0x1a/0x44 [ 77.984549][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.990908][ T25] __warn.cold+0x35/0x44 [ 77.996346][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.002424][ T25] report_bug+0x1bd/0x210 [ 78.006875][ T25] handle_bug+0x3c/0x60 [ 78.011365][ T25] exc_invalid_op+0x14/0x40 [ 78.016389][ T25] asm_exc_invalid_op+0x12/0x20 [ 78.021975][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.028464][ T25] 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 70 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 89 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.048444][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 78.054552][ T25] RAX: 0000000000000000 RBX: ffff888024500400 RCX: 0000000000000000 [ 78.062986][ T25] RDX: ffff888011e354c0 RSI: ffffffff815c8ba5 RDI: fffff520001bff6a [ 78.071080][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.079415][ T25] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801bf70f20 [ 78.087780][ T25] R13: 0000000000000000 R14: ffff88801baf1f80 R15: 0000000000000001 [ 78.095860][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.101178][ T25] ? vprintk+0x95/0x260 [ 78.105544][ T25] nf_unregister_net_hooks+0x117/0x160 [ 78.111215][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.117129][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 78.123164][ T25] cleanup_net+0x451/0xb10 [ 78.128187][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.133726][ T25] process_one_work+0x98d/0x1600 [ 78.139060][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.144488][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 78.149575][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 78.154744][ T25] worker_thread+0x64c/0x1120 [ 78.159456][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 78.164710][ T25] ? process_one_work+0x1600/0x1600 [ 78.170209][ T25] kthread+0x3b1/0x4a0 [ 78.174440][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 78.179577][ T25] ret_from_fork+0x1f/0x30 [ 78.185727][ T25] Kernel Offset: disabled [ 78.190818][ T25] Rebooting in 86400 seconds..