Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.107' (ECDSA) to the list of known hosts. 2021/04/27 07:52:11 fuzzer started 2021/04/27 07:52:11 connecting to host at 10.128.0.169:32829 2021/04/27 07:52:11 checking machine... 2021/04/27 07:52:11 checking revisions... 2021/04/27 07:52:11 testing simple program... syzkaller login: [ 70.563745][ T8421] chnl_net:caif_netlink_parms(): no params data found [ 70.613853][ T8421] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.623360][ T8421] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.633042][ T8421] device bridge_slave_0 entered promiscuous mode [ 70.643391][ T8421] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.652382][ T8421] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.661354][ T8421] device bridge_slave_1 entered promiscuous mode [ 70.681772][ T8421] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.692867][ T8421] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.715545][ T8421] team0: Port device team_slave_0 added [ 70.723073][ T8421] team0: Port device team_slave_1 added [ 70.740678][ T8421] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.747931][ T8421] 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. [ 70.774001][ T8421] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.787480][ T8421] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.794745][ T8421] 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. [ 70.821130][ T8421] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.847104][ T8421] device hsr_slave_0 entered promiscuous mode [ 70.854603][ T8421] device hsr_slave_1 entered promiscuous mode [ 70.959231][ T8421] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.970608][ T8421] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.980860][ T8421] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.992699][ T8421] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.020862][ T8421] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.028130][ T8421] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.035714][ T8421] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.042850][ T8421] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.089558][ T8421] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.104311][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.116954][ T8135] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.125834][ T8135] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.135289][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.149911][ T8421] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.162313][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.171951][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.179148][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.192083][ T3316] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.201819][ T3316] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.209183][ T3316] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.227625][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.237646][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.253368][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.270459][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.279645][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.293543][ T8421] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.315626][ T8421] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.324194][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.333055][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.353341][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.374949][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.383843][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.392305][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.404001][ T8421] device veth0_vlan entered promiscuous mode [ 71.417625][ T8421] device veth1_vlan entered promiscuous mode [ 71.442389][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.451656][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.461588][ T8135] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.473032][ T8421] device veth0_macvtap entered promiscuous mode [ 71.485800][ T8421] device veth1_macvtap entered promiscuous mode [ 71.504722][ T8421] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.513692][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.525379][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.538032][ T8421] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.545359][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.555523][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.570012][ T8421] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.579023][ T8421] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.587730][ T8421] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.599624][ T8421] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.711381][ T825] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.740058][ T825] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.750846][ T259] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.753065][ T8643] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.769369][ T259] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.781435][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/27 07:52:14 building call list... executing program [ 72.444747][ T259] ------------[ cut here ]------------ [ 72.451927][ T259] hook not found, pf 3 num 0 [ 72.452739][ T259] WARNING: CPU: 1 PID: 259 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 72.472454][ T259] Modules linked in: [ 72.476477][ T259] CPU: 1 PID: 259 Comm: kworker/u4:4 Not tainted 5.12.0-next-20210427-syzkaller #0 [ 72.491372][ T259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.502918][ T259] Workqueue: netns cleanup_net [ 72.510298][ T259] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 72.529522][ T259] 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 49 6e 8a e8 18 35 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 16 2d fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 72.555379][ T259] RSP: 0018:ffffc90001b3fbc0 EFLAGS: 00010286 [ 72.562644][ T259] RAX: 0000000000000000 RBX: ffff888024fd8a00 RCX: 0000000000000000 [ 72.572747][ T259] RDX: ffff888013189c80 RSI: ffffffff815cc9f5 RDI: fffff52000367f6a [ 72.582290][ T259] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 72.595620][ T259] R10: ffffffff815c685e R11: 0000000000000000 R12: ffff888033b90f20 [ 72.611907][ T259] R13: 0000000000000000 R14: ffff888013febf80 R15: 0000000000000001 [ 72.621210][ T259] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 72.635123][ T259] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.643359][ T259] CR2: 00007f75f4a0e000 CR3: 000000001528a000 CR4: 00000000001506f0 [ 72.653042][ T259] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.663747][ T259] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.673116][ T259] Call Trace: [ 72.676431][ T259] nf_unregister_net_hooks+0x117/0x160 [ 72.683893][ T259] arpt_unregister_table_pre_exit+0x67/0x80 [ 72.690868][ T259] ? arptable_filter_net_exit+0x20/0x20 [ 72.696490][ T259] cleanup_net+0x451/0xb10 [ 72.702402][ T259] ? ops_free_list.part.0+0x3d0/0x3d0 [ 72.718115][ T259] process_one_work+0x98d/0x1600 [ 72.723314][ T259] ? pwq_dec_nr_in_flight+0x320/0x320 [ 72.732493][ T259] ? rwlock_bug.part.0+0x90/0x90 [ 72.739640][ T259] ? _raw_spin_lock_irq+0x41/0x50 [ 72.744750][ T259] worker_thread+0x64c/0x1120 [ 72.751094][ T259] ? process_one_work+0x1600/0x1600 [ 72.756346][ T259] kthread+0x3b1/0x4a0 [ 72.762743][ T259] ? __kthread_bind_mask+0xc0/0xc0 [ 72.769254][ T259] ret_from_fork+0x1f/0x30 [ 72.773740][ T259] Kernel panic - not syncing: panic_on_warn set ... [ 72.780456][ T259] CPU: 0 PID: 259 Comm: kworker/u4:4 Not tainted 5.12.0-next-20210427-syzkaller #0 [ 72.790434][ T259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.800722][ T259] Workqueue: netns cleanup_net [ 72.805606][ T259] Call Trace: [ 72.808982][ T259] dump_stack+0x141/0x1d7 [ 72.813333][ T259] panic+0x306/0x73d [ 72.817250][ T259] ? __warn_printk+0xf3/0xf3 [ 72.821964][ T259] ? __warn.cold+0x1a/0x44 [ 72.826511][ T259] ? __nf_unregister_net_hook+0x1eb/0x610 [ 72.832358][ T259] __warn.cold+0x35/0x44 [ 72.836712][ T259] ? __nf_unregister_net_hook+0x1eb/0x610 [ 72.842717][ T259] report_bug+0x1bd/0x210 [ 72.847087][ T259] handle_bug+0x3c/0x60 [ 72.851263][ T259] exc_invalid_op+0x14/0x40 [ 72.855792][ T259] asm_exc_invalid_op+0x12/0x20 [ 72.860657][ T259] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 72.867175][ T259] 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 49 6e 8a e8 18 35 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 16 2d fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 72.886808][ T259] RSP: 0018:ffffc90001b3fbc0 EFLAGS: 00010286 [ 72.892906][ T259] RAX: 0000000000000000 RBX: ffff888024fd8a00 RCX: 0000000000000000 [ 72.900897][ T259] RDX: ffff888013189c80 RSI: ffffffff815cc9f5 RDI: fffff52000367f6a [ 72.908887][ T259] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 72.916977][ T259] R10: ffffffff815c685e R11: 0000000000000000 R12: ffff888033b90f20 [ 72.924974][ T259] R13: 0000000000000000 R14: ffff888013febf80 R15: 0000000000000001 [ 72.933054][ T259] ? wake_up_klogd.part.0+0x8e/0xd0 [ 72.938283][ T259] ? vprintk+0x95/0x260 [ 72.942481][ T259] nf_unregister_net_hooks+0x117/0x160 [ 72.947973][ T259] arpt_unregister_table_pre_exit+0x67/0x80 [ 72.953984][ T259] ? arptable_filter_net_exit+0x20/0x20 [ 72.959560][ T259] cleanup_net+0x451/0xb10 [ 72.964006][ T259] ? ops_free_list.part.0+0x3d0/0x3d0 [ 72.969418][ T259] process_one_work+0x98d/0x1600 [ 72.974398][ T259] ? pwq_dec_nr_in_flight+0x320/0x320 [ 72.979804][ T259] ? rwlock_bug.part.0+0x90/0x90 [ 72.984774][ T259] ? _raw_spin_lock_irq+0x41/0x50 [ 72.989836][ T259] worker_thread+0x64c/0x1120 [ 72.994594][ T259] ? process_one_work+0x1600/0x1600 [ 72.999829][ T259] kthread+0x3b1/0x4a0 [ 73.003934][ T259] ? __kthread_bind_mask+0xc0/0xc0 [ 73.009078][ T259] ret_from_fork+0x1f/0x30 [ 73.014748][ T259] Kernel Offset: disabled [ 73.019384][ T259] Rebooting in 86400 seconds..