Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. 2021/05/03 22:25:21 fuzzer started 2021/05/03 22:25:22 connecting to host at 10.128.0.169:45615 2021/05/03 22:25:22 checking machine... 2021/05/03 22:25:22 checking revisions... 2021/05/03 22:25:22 testing simple program... syzkaller login: [ 84.189289][ T8420] chnl_net:caif_netlink_parms(): no params data found [ 84.253430][ T8420] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.263821][ T8420] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.272579][ T8420] device bridge_slave_0 entered promiscuous mode [ 84.284686][ T8420] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.293063][ T8420] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.302265][ T8420] device bridge_slave_1 entered promiscuous mode [ 84.325094][ T8420] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.338821][ T8420] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.365508][ T8420] team0: Port device team_slave_0 added [ 84.377915][ T8420] team0: Port device team_slave_1 added [ 84.400689][ T8420] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 84.409441][ 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. [ 84.441970][ T8420] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 84.456728][ T8420] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 84.464739][ 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. [ 84.494251][ T8420] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.524141][ T8420] device hsr_slave_0 entered promiscuous mode [ 84.532023][ T8420] device hsr_slave_1 entered promiscuous mode [ 84.658285][ T8420] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.673729][ T8420] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.685019][ T8420] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.695991][ T8420] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.726596][ T8420] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.734796][ T8420] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.743673][ T8420] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.751839][ T8420] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.815048][ T8420] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.833373][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.850922][ T2940] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.867625][ T2940] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.880723][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 84.897183][ T8420] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.912667][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.922472][ T3157] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.932363][ T3157] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.947960][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.959420][ T2940] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.969365][ T2940] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.992247][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.012105][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.023096][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.033808][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.051760][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 85.065214][ T8420] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.085483][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 85.095237][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.111890][ T8420] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.134292][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 85.158123][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 85.167897][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 85.179279][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 85.193690][ T8420] device veth0_vlan entered promiscuous mode [ 85.207655][ T8420] device veth1_vlan entered promiscuous mode [ 85.239009][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 85.248175][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 85.265571][ T8420] device veth0_macvtap entered promiscuous mode [ 85.277595][ T8420] device veth1_macvtap entered promiscuous mode [ 85.300112][ T8420] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.309094][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 85.317633][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 85.327399][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 85.337932][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 85.354261][ T8420] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.362940][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 85.375957][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 85.394060][ T8420] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 85.404195][ T8420] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.420104][ T8420] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.431322][ T8420] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.534441][ T165] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.550500][ T165] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.581840][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 85.607530][ T165] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.616557][ T165] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.627350][ T4806] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 22:25:25 building call list... [ 86.359239][ T232] ------------[ cut here ]------------ [ 86.371477][ T232] hook not found, pf 3 num 0 [ 86.372429][ T232] WARNING: CPU: 1 PID: 232 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 86.398744][ T232] Modules linked in: [ 86.403569][ T232] CPU: 1 PID: 232 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 86.415956][ T232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.428873][ T232] Workqueue: netns cleanup_net [ 86.434739][ T232] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 86.445049][ T232] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 86.476032][ T232] RSP: 0018:ffffc9000161fbc0 EFLAGS: 00010286 [ 86.483635][ T232] RAX: 0000000000000000 RBX: ffff8881478b5900 RCX: 0000000000000000 [ 86.495115][ T232] RDX: ffff888012a41c40 RSI: ffffffff815c8ba5 RDI: fffff520002c3f6a [ 86.510198][ T232] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 86.534074][ T232] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888019010f20 [ 86.551115][ T232] R13: 0000000000000000 R14: ffff88801275a800 R15: 0000000000000001 [ 86.563883][ T232] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 86.577963][ T232] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.589615][ T232] CR2: 00007fe6ba257020 CR3: 0000000012ae0000 CR4: 00000000001506e0 [ 86.603038][ T232] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.614365][ T232] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.627393][ T232] Call Trace: [ 86.633639][ T232] nf_unregister_net_hooks+0x117/0x160 [ 86.641423][ T232] arpt_unregister_table_pre_exit+0x67/0x80 [ 86.649675][ T232] ? arptable_filter_net_exit+0x20/0x20 [ 86.656974][ T232] cleanup_net+0x451/0xb10 [ 86.665453][ T232] ? ops_free_list.part.0+0x3d0/0x3d0 [ 86.674892][ T232] process_one_work+0x98d/0x1600 [ 86.683055][ T232] ? pwq_dec_nr_in_flight+0x320/0x320 [ 86.690695][ T232] ? rwlock_bug.part.0+0x90/0x90 [ 86.696290][ T232] ? _raw_spin_lock_irq+0x41/0x50 [ 86.705863][ T232] worker_thread+0x64c/0x1120 [ 86.711977][ T232] ? __kthread_parkme+0x13f/0x1e0 [ 86.717174][ T232] ? process_one_work+0x1600/0x1600 [ 86.724882][ T232] kthread+0x3b1/0x4a0 [ 86.732013][ T232] ? __kthread_bind_mask+0xc0/0xc0 [ 86.737294][ T232] ret_from_fork+0x1f/0x30 [ 86.744228][ T232] Kernel panic - not syncing: panic_on_warn set ... [ 86.752029][ T232] CPU: 1 PID: 232 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0 [ 86.761718][ T232] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.773084][ T232] Workqueue: netns cleanup_net [ 86.779379][ T232] Call Trace: [ 86.782789][ T232] dump_stack+0x141/0x1d7 [ 86.787427][ T232] panic+0x306/0x73d [ 86.791819][ T232] ? __warn_printk+0xf3/0xf3 [ 86.796969][ T232] ? __warn.cold+0x1a/0x44 [ 86.802361][ T232] ? __nf_unregister_net_hook+0x1eb/0x610 [ 86.809056][ T232] __warn.cold+0x35/0x44 [ 86.813553][ T232] ? __nf_unregister_net_hook+0x1eb/0x610 [ 86.820584][ T232] report_bug+0x1bd/0x210 [ 86.825659][ T232] handle_bug+0x3c/0x60 [ 86.830079][ T232] exc_invalid_op+0x14/0x40 [ 86.835006][ T232] asm_exc_invalid_op+0x12/0x20 [ 86.841040][ T232] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 86.847990][ T232] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 86.869969][ T232] RSP: 0018:ffffc9000161fbc0 EFLAGS: 00010286 [ 86.878173][ T232] RAX: 0000000000000000 RBX: ffff8881478b5900 RCX: 0000000000000000 [ 86.888082][ T232] RDX: ffff888012a41c40 RSI: ffffffff815c8ba5 RDI: fffff520002c3f6a [ 86.896955][ T232] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 86.906434][ T232] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888019010f20 [ 86.915586][ T232] R13: 0000000000000000 R14: ffff88801275a800 R15: 0000000000000001 [ 86.924146][ T232] ? wake_up_klogd.part.0+0x8e/0xd0 [ 86.929664][ T232] ? vprintk+0x95/0x260 [ 86.934278][ T232] nf_unregister_net_hooks+0x117/0x160 [ 86.940583][ T232] arpt_unregister_table_pre_exit+0x67/0x80 [ 86.947178][ T232] ? arptable_filter_net_exit+0x20/0x20 [ 86.952966][ T232] cleanup_net+0x451/0xb10 [ 86.957513][ T232] ? ops_free_list.part.0+0x3d0/0x3d0 [ 86.964773][ T232] process_one_work+0x98d/0x1600 [ 86.970017][ T232] ? pwq_dec_nr_in_flight+0x320/0x320 [ 86.975847][ T232] ? rwlock_bug.part.0+0x90/0x90 [ 86.981650][ T232] ? _raw_spin_lock_irq+0x41/0x50 [ 86.987388][ T232] worker_thread+0x64c/0x1120 [ 86.992720][ T232] ? __kthread_parkme+0x13f/0x1e0 [ 86.999428][ T232] ? process_one_work+0x1600/0x1600 [ 87.006429][ T232] kthread+0x3b1/0x4a0 [ 87.011071][ T232] ? __kthread_bind_mask+0xc0/0xc0 [ 87.017614][ T232] ret_from_fork+0x1f/0x30 [ 87.025552][ T232] Kernel Offset: disabled [ 87.032625][ T232] Rebooting in 86400 seconds..