Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.226' (ECDSA) to the list of known hosts. 2021/05/10 11:51:30 fuzzer started 2021/05/10 11:51:31 connecting to host at 10.128.0.169:42477 2021/05/10 11:51:31 checking machine... 2021/05/10 11:51:31 checking revisions... 2021/05/10 11:51:31 testing simple program... syzkaller login: [ 74.340528][ T8438] chnl_net:caif_netlink_parms(): no params data found [ 74.397923][ T8438] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.406775][ T8438] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.416634][ T8438] device bridge_slave_0 entered promiscuous mode [ 74.427209][ T8438] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.434382][ T8438] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.442239][ T8438] device bridge_slave_1 entered promiscuous mode [ 74.465548][ T8438] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.477119][ T8438] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.501236][ T8438] team0: Port device team_slave_0 added [ 74.508650][ T8438] team0: Port device team_slave_1 added [ 74.527568][ T8438] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.535202][ T8438] 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. [ 74.561913][ T8438] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.577853][ T8438] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.585859][ T8438] 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. [ 74.613384][ T8438] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.642048][ T8438] device hsr_slave_0 entered promiscuous mode [ 74.649681][ T8438] device hsr_slave_1 entered promiscuous mode [ 74.760896][ T8438] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.772027][ T8438] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.782929][ T8438] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.795117][ T8438] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.823051][ T8438] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.830449][ T8438] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.838746][ T8438] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.846042][ T8438] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.894482][ T8438] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.909324][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.920878][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.930453][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.939635][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.954111][ T8438] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.968377][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.977394][ T8660] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.984696][ T8660] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.997778][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.006460][ T8660] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.014080][ T8660] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.035549][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.053674][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.062527][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.072574][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.085620][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.097662][ T8438] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.122402][ T8438] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.131144][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.139486][ T8660] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.167435][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.184487][ T8438] device veth0_vlan entered promiscuous mode [ 75.194238][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.206306][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.214933][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.227472][ T8438] device veth1_vlan entered promiscuous mode [ 75.250639][ T3168] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.259468][ T3168] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.269465][ T3168] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.282378][ T8438] device veth0_macvtap entered promiscuous mode [ 75.293002][ T8438] device veth1_macvtap entered promiscuous mode [ 75.314480][ T8438] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.322850][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.334280][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.347830][ T8438] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.355776][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.365734][ T3933] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.377886][ T8438] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.389913][ T8438] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.399412][ T8438] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.412487][ T8438] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.522778][ T130] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.532051][ T130] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.560722][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 75.576403][ T130] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.593096][ T130] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.602757][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/10 11:51:34 building call list... [ 76.270036][ T188] ------------[ cut here ]------------ [ 76.286219][ T188] hook not found, pf 3 num 0 [ 76.286878][ T188] WARNING: CPU: 0 PID: 188 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 76.308403][ T188] Modules linked in: [ 76.312448][ T188] CPU: 0 PID: 188 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 76.321216][ T188] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.333261][ T188] Workqueue: netns cleanup_net [ 76.340714][ T188] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.349432][ T188] 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 [ 76.371795][ T188] RSP: 0018:ffffc9000173fbc0 EFLAGS: 00010286 [ 76.379175][ T188] RAX: 0000000000000000 RBX: ffff88802400f900 RCX: 0000000000000000 [ 76.390612][ T188] RDX: ffff8880159b9c40 RSI: ffffffff815c8ba5 RDI: fffff520002e7f6a [ 76.399791][ T188] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.409939][ T188] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802b238f20 [ 76.418591][ T188] R13: 0000000000000000 R14: ffff88802495a280 R15: 0000000000000001 [ 76.428937][ T188] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 76.439275][ T188] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.446721][ T188] CR2: 00007f334016a740 CR3: 0000000020490000 CR4: 00000000001506f0 [ 76.456242][ T188] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.478117][ T188] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.487532][ T188] Call Trace: [ 76.490967][ T188] nf_unregister_net_hooks+0x117/0x160 [ 76.497556][ T188] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.504509][ T188] ? arptable_filter_net_exit+0x20/0x20 [ 76.510305][ T188] cleanup_net+0x451/0xb10 [ 76.516163][ T188] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.521709][ T188] process_one_work+0x98d/0x1600 [ 76.528264][ T188] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.534400][ T188] ? rwlock_bug.part.0+0x90/0x90 [ 76.539377][ T188] ? _raw_spin_lock_irq+0x41/0x50 [ 76.547184][ T188] worker_thread+0x64c/0x1120 [ 76.551925][ T188] ? process_one_work+0x1600/0x1600 [ 76.558512][ T188] kthread+0x3b1/0x4a0 [ 76.562622][ T188] ? __kthread_bind_mask+0xc0/0xc0 [ 76.570976][ T188] ret_from_fork+0x1f/0x30 [ 76.576668][ T188] Kernel panic - not syncing: panic_on_warn set ... [ 76.583272][ T188] CPU: 0 PID: 188 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 76.591525][ T188] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.601588][ T188] Workqueue: netns cleanup_net [ 76.606377][ T188] Call Trace: [ 76.609666][ T188] dump_stack+0x141/0x1d7 [ 76.614014][ T188] panic+0x306/0x73d [ 76.617923][ T188] ? __warn_printk+0xf3/0xf3 [ 76.622541][ T188] ? __warn.cold+0x1a/0x44 [ 76.626984][ T188] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.632740][ T188] __warn.cold+0x35/0x44 [ 76.637009][ T188] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.642841][ T188] report_bug+0x1bd/0x210 [ 76.647201][ T188] handle_bug+0x3c/0x60 [ 76.651375][ T188] exc_invalid_op+0x14/0x40 [ 76.655898][ T188] asm_exc_invalid_op+0x12/0x20 [ 76.660767][ T188] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.667121][ T188] 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 [ 76.686829][ T188] RSP: 0018:ffffc9000173fbc0 EFLAGS: 00010286 [ 76.693003][ T188] RAX: 0000000000000000 RBX: ffff88802400f900 RCX: 0000000000000000 [ 76.700992][ T188] RDX: ffff8880159b9c40 RSI: ffffffff815c8ba5 RDI: fffff520002e7f6a [ 76.709159][ T188] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.717150][ T188] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802b238f20 [ 76.725134][ T188] R13: 0000000000000000 R14: ffff88802495a280 R15: 0000000000000001 [ 76.733392][ T188] ? wake_up_klogd.part.0+0x8e/0xd0 [ 76.738623][ T188] ? vprintk+0x95/0x260 [ 76.743100][ T188] nf_unregister_net_hooks+0x117/0x160 [ 76.748589][ T188] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.754522][ T188] ? arptable_filter_net_exit+0x20/0x20 [ 76.760789][ T188] cleanup_net+0x451/0xb10 [ 76.765343][ T188] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.770756][ T188] process_one_work+0x98d/0x1600 [ 76.775728][ T188] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.781133][ T188] ? rwlock_bug.part.0+0x90/0x90 [ 76.786179][ T188] ? _raw_spin_lock_irq+0x41/0x50 [ 76.791238][ T188] worker_thread+0x64c/0x1120 [ 76.796212][ T188] ? process_one_work+0x1600/0x1600 [ 76.801433][ T188] kthread+0x3b1/0x4a0 [ 76.805513][ T188] ? __kthread_bind_mask+0xc0/0xc0 [ 76.810728][ T188] ret_from_fork+0x1f/0x30 [ 76.816583][ T188] Kernel Offset: disabled [ 76.821570][ T188] Rebooting in 86400 seconds..