Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.97' (ECDSA) to the list of known hosts. 2021/04/27 22:02:30 fuzzer started 2021/04/27 22:02:31 connecting to host at 10.128.0.169:43787 2021/04/27 22:02:31 checking machine... 2021/04/27 22:02:31 checking revisions... 2021/04/27 22:02:31 testing simple program... syzkaller login: [ 71.218386][ T8410] chnl_net:caif_netlink_parms(): no params data found [ 71.267324][ T8410] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.276158][ T8410] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.285404][ T8410] device bridge_slave_0 entered promiscuous mode [ 71.296461][ T8410] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.306063][ T8410] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.315187][ T8410] device bridge_slave_1 entered promiscuous mode [ 71.338566][ T8410] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.351663][ T8410] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.374791][ T8410] team0: Port device team_slave_0 added [ 71.382466][ T8410] team0: Port device team_slave_1 added [ 71.400519][ T8410] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.408636][ T8410] 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. [ 71.439314][ T8410] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.456893][ T8410] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.464555][ T8410] 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. [ 71.492187][ T8410] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.520275][ T8410] device hsr_slave_0 entered promiscuous mode [ 71.527450][ T8410] device hsr_slave_1 entered promiscuous mode [ 71.632006][ T8410] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.643620][ T8410] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.654202][ T8410] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.665563][ T8410] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.693454][ T8410] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.701293][ T8410] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.709854][ T8410] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.717250][ T8410] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.764441][ T8410] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.782009][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.794671][ T27] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.804006][ T27] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.812842][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.827004][ T8410] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.840848][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.851411][ T3148] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.858699][ T3148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.880465][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.891122][ T3148] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.898697][ T3148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.924755][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.934687][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.944392][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.953745][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.965338][ T8410] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.976978][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.997232][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.004961][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.021792][ T8410] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.049055][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.067795][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.078226][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.090107][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.100773][ T8410] device veth0_vlan entered promiscuous mode [ 72.115651][ T8410] device veth1_vlan entered promiscuous mode [ 72.140737][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.151127][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.162022][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.172546][ T8410] device veth0_macvtap entered promiscuous mode [ 72.185312][ T8410] device veth1_macvtap entered promiscuous mode [ 72.200469][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.214884][ T8410] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.224536][ T8633] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.234746][ T8633] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.251782][ T8410] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.261334][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.271241][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.284711][ T8410] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.295542][ T8410] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.305429][ T8410] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.315762][ T8410] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.425694][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.434434][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.461406][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.490288][ T133] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.499464][ T133] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.513154][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/27 22:02:34 building call list... executing program [ 73.141252][ T25] ------------[ cut here ]------------ [ 73.148032][ T25] hook not found, pf 3 num 0 [ 73.149898][ T25] WARNING: CPU: 1 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 73.167436][ T25] Modules linked in: [ 73.173548][ T25] CPU: 1 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-rc7-syzkaller #0 [ 73.185857][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.197889][ T25] Workqueue: netns cleanup_net [ 73.206404][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.216120][ 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 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 [ 73.244239][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 73.251930][ T25] RAX: 0000000000000000 RBX: ffff888146f83c00 RCX: 0000000000000000 [ 73.262801][ T25] RDX: ffff8880117a1c40 RSI: ffffffff815c5205 RDI: fffff520001bff6a [ 73.272538][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.285831][ T25] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff888019390f20 [ 73.296070][ T25] R13: 0000000000000000 R14: ffff88801c56cf80 R15: 0000000000000001 [ 73.306970][ T25] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 73.317763][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.326896][ T25] CR2: 00007fe4d01d0000 CR3: 0000000013a4d000 CR4: 00000000001506e0 [ 73.337132][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.346625][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.356091][ T25] Call Trace: [ 73.369061][ T25] nf_unregister_net_hooks+0x117/0x160 [ 73.374909][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.400125][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 73.407311][ T25] cleanup_net+0x451/0xb10 [ 73.421200][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.427197][ T25] process_one_work+0x98d/0x1600 [ 73.435394][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.444146][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 73.452993][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 73.458530][ T25] worker_thread+0x64c/0x1120 [ 73.466499][ T25] ? process_one_work+0x1600/0x1600 [ 73.473084][ T25] kthread+0x3b1/0x4a0 [ 73.477298][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 73.485490][ T25] ret_from_fork+0x1f/0x30 [ 73.491161][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 73.498035][ T25] CPU: 1 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-rc7-syzkaller #0 [ 73.506535][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.517233][ T25] Workqueue: netns cleanup_net [ 73.522447][ T25] Call Trace: [ 73.525880][ T25] dump_stack+0x141/0x1d7 [ 73.530306][ T25] panic+0x306/0x73d [ 73.534211][ T25] ? __warn_printk+0xf3/0xf3 [ 73.538926][ T25] ? __warn.cold+0x1a/0x44 [ 73.543474][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.549379][ T25] __warn.cold+0x35/0x44 [ 73.553714][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.560023][ T25] report_bug+0x1bd/0x210 [ 73.564501][ T25] handle_bug+0x3c/0x60 [ 73.568748][ T25] exc_invalid_op+0x14/0x40 [ 73.573481][ T25] asm_exc_invalid_op+0x12/0x20 [ 73.578600][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.585019][ 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 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 [ 73.605093][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 73.611159][ T25] RAX: 0000000000000000 RBX: ffff888146f83c00 RCX: 0000000000000000 [ 73.619390][ T25] RDX: ffff8880117a1c40 RSI: ffffffff815c5205 RDI: fffff520001bff6a [ 73.628294][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.636924][ T25] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff888019390f20 [ 73.645341][ T25] R13: 0000000000000000 R14: ffff88801c56cf80 R15: 0000000000000001 [ 73.653549][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 73.658860][ T25] ? vprintk_func+0x95/0x1e0 [ 73.663558][ T25] nf_unregister_net_hooks+0x117/0x160 [ 73.669458][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.675363][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 73.681193][ T25] cleanup_net+0x451/0xb10 [ 73.685796][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.691549][ T25] process_one_work+0x98d/0x1600 [ 73.697212][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.702691][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 73.707890][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 73.713146][ T25] worker_thread+0x64c/0x1120 [ 73.718095][ T25] ? process_one_work+0x1600/0x1600 [ 73.723575][ T25] kthread+0x3b1/0x4a0 [ 73.727743][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 73.733950][ T25] ret_from_fork+0x1f/0x30 [ 73.740516][ T25] Kernel Offset: disabled [ 73.745339][ T25] Rebooting in 86400 seconds..