Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts. 2021/04/30 00:22:26 fuzzer started 2021/04/30 00:22:26 connecting to host at 10.128.0.169:39537 2021/04/30 00:22:26 checking machine... 2021/04/30 00:22:26 checking revisions... 2021/04/30 00:22:26 testing simple program... syzkaller login: [ 74.776553][ T8413] chnl_net:caif_netlink_parms(): no params data found [ 74.829458][ T8413] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.838242][ T8413] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.848380][ T8413] device bridge_slave_0 entered promiscuous mode [ 74.860380][ T8413] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.868712][ T8413] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.877719][ T8413] device bridge_slave_1 entered promiscuous mode [ 74.899742][ T8413] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.910851][ T8413] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.935878][ T8413] team0: Port device team_slave_0 added [ 74.944874][ T8413] team0: Port device team_slave_1 added [ 74.962084][ T8413] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.973501][ T8413] 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. [ 75.000043][ T8413] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.012883][ T8413] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.020119][ T8413] 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. [ 75.046414][ T8413] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.074127][ T8413] device hsr_slave_0 entered promiscuous mode [ 75.086213][ T8413] device hsr_slave_1 entered promiscuous mode [ 75.194628][ T8413] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.207183][ T8413] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.217694][ T8413] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.231680][ T8413] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.258853][ T8413] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.266830][ T8413] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.275418][ T8413] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.282815][ T8413] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.332037][ T8413] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.349140][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.362039][ T4543] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.372346][ T4543] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.381986][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.398245][ T8413] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.411731][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.424331][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.439147][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.454869][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.464683][ T4543] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.474492][ T4543] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.507109][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.516775][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.526840][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.537336][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.547025][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.561503][ T8413] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.587177][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.597037][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.612646][ T8413] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.640437][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.666506][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.676344][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.685885][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.698199][ T8413] device veth0_vlan entered promiscuous mode [ 75.716541][ T8413] device veth1_vlan entered promiscuous mode [ 75.743777][ T4031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.754488][ T4031] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.769198][ T8413] device veth0_macvtap entered promiscuous mode [ 75.780931][ T8413] device veth1_macvtap entered promiscuous mode [ 75.800517][ T8413] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.809654][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.820067][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 75.830882][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.840847][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.857886][ T8413] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.872169][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.882543][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.896308][ T8413] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.906276][ T8413] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.915200][ T8413] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.924528][ T8413] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 76.038050][ T179] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.067539][ T179] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.080911][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.102390][ T179] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.112677][ T179] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.126450][ T4543] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/30 00:22:29 building call list... [ 76.862861][ T50] ------------[ cut here ]------------ [ 76.870850][ T50] hook not found, pf 3 num 0 [ 76.871383][ T50] WARNING: CPU: 1 PID: 50 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 76.890119][ T50] Modules linked in: [ 76.913310][ T50] CPU: 1 PID: 50 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 76.921370][ T50] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.937750][ T50] Workqueue: netns cleanup_net [ 76.945667][ T50] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.952463][ T50] 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 [ 76.976549][ T50] RSP: 0018:ffffc90000f0fbc0 EFLAGS: 00010286 [ 76.982758][ T50] RAX: 0000000000000000 RBX: ffff888147617f00 RCX: 0000000000000000 [ 76.997159][ T50] RDX: ffff888012118000 RSI: ffffffff815c8ba5 RDI: fffff520001e1f6a [ 77.007929][ T50] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.018022][ T50] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888036350f20 [ 77.029235][ T50] R13: 0000000000000000 R14: ffff888021368b00 R15: 0000000000000001 [ 77.038654][ T50] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 77.050529][ T50] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.061420][ T50] CR2: 00007f29dc70f020 CR3: 0000000012068000 CR4: 00000000001506e0 [ 77.070922][ T50] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.081898][ T50] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.091663][ T50] Call Trace: [ 77.097257][ T50] nf_unregister_net_hooks+0x117/0x160 [ 77.102792][ T50] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.112358][ T50] ? arptable_filter_net_exit+0x20/0x20 [ 77.119962][ T50] cleanup_net+0x451/0xb10 [ 77.127630][ T50] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.139905][ T50] process_one_work+0x98d/0x1600 [ 77.148379][ T50] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.155254][ T50] ? rwlock_bug.part.0+0x90/0x90 [ 77.160878][ T50] ? _raw_spin_lock_irq+0x41/0x50 [ 77.169687][ T50] worker_thread+0x64c/0x1120 [ 77.176064][ T50] ? __kthread_parkme+0x13f/0x1e0 [ 77.181530][ T50] ? process_one_work+0x1600/0x1600 [ 77.190692][ T50] kthread+0x3b1/0x4a0 [ 77.196075][ T50] ? __kthread_bind_mask+0xc0/0xc0 [ 77.202374][ T50] ret_from_fork+0x1f/0x30 [ 77.210133][ T50] Kernel panic - not syncing: panic_on_warn set ... [ 77.216781][ T50] CPU: 1 PID: 50 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 77.224893][ T50] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.235098][ T50] Workqueue: netns cleanup_net [ 77.240275][ T50] Call Trace: [ 77.243708][ T50] dump_stack+0x141/0x1d7 [ 77.248440][ T50] panic+0x306/0x73d [ 77.252581][ T50] ? __warn_printk+0xf3/0xf3 [ 77.257445][ T50] ? __warn.cold+0x1a/0x44 [ 77.262781][ T50] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.268754][ T50] __warn.cold+0x35/0x44 [ 77.273138][ T50] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.280062][ T50] report_bug+0x1bd/0x210 [ 77.285244][ T50] handle_bug+0x3c/0x60 [ 77.291391][ T50] exc_invalid_op+0x14/0x40 [ 77.296072][ T50] asm_exc_invalid_op+0x12/0x20 [ 77.302740][ T50] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.309412][ T50] 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 [ 77.329560][ T50] RSP: 0018:ffffc90000f0fbc0 EFLAGS: 00010286 [ 77.335931][ T50] RAX: 0000000000000000 RBX: ffff888147617f00 RCX: 0000000000000000 [ 77.343941][ T50] RDX: ffff888012118000 RSI: ffffffff815c8ba5 RDI: fffff520001e1f6a [ 77.351953][ T50] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.360504][ T50] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888036350f20 [ 77.368519][ T50] R13: 0000000000000000 R14: ffff888021368b00 R15: 0000000000000001 [ 77.377432][ T50] ? wake_up_klogd.part.0+0x8e/0xd0 [ 77.382716][ T50] ? vprintk+0x95/0x260 [ 77.387040][ T50] nf_unregister_net_hooks+0x117/0x160 [ 77.392651][ T50] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.398877][ T50] ? arptable_filter_net_exit+0x20/0x20 [ 77.404488][ T50] cleanup_net+0x451/0xb10 [ 77.409064][ T50] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.414517][ T50] process_one_work+0x98d/0x1600 [ 77.419532][ T50] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.424964][ T50] ? rwlock_bug.part.0+0x90/0x90 [ 77.429960][ T50] ? _raw_spin_lock_irq+0x41/0x50 [ 77.435037][ T50] worker_thread+0x64c/0x1120 [ 77.439782][ T50] ? __kthread_parkme+0x13f/0x1e0 [ 77.444875][ T50] ? process_one_work+0x1600/0x1600 [ 77.450139][ T50] kthread+0x3b1/0x4a0 [ 77.454309][ T50] ? __kthread_bind_mask+0xc0/0xc0 [ 77.459482][ T50] ret_from_fork+0x1f/0x30 [ 77.464893][ T50] Kernel Offset: disabled [ 77.469394][ T50] Rebooting in 86400 seconds..