Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.63' (ECDSA) to the list of known hosts. 2021/05/07 00:12:42 fuzzer started 2021/05/07 00:12:43 connecting to host at 10.128.0.169:35187 2021/05/07 00:12:43 checking machine... 2021/05/07 00:12:43 checking revisions... 2021/05/07 00:12:43 testing simple program... syzkaller login: [ 77.292699][ T8465] chnl_net:caif_netlink_parms(): no params data found [ 77.371949][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.380141][ T8465] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.388731][ T8465] device bridge_slave_0 entered promiscuous mode [ 77.402839][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.411688][ T8465] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.421484][ T8465] device bridge_slave_1 entered promiscuous mode [ 77.452117][ T8465] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.466907][ T8465] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.493785][ T8465] team0: Port device team_slave_0 added [ 77.502513][ T8465] team0: Port device team_slave_1 added [ 77.531805][ T8465] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.539180][ T8465] 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. [ 77.577038][ T8465] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.593502][ T8465] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.604013][ T8465] 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. [ 77.637443][ T8465] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.671729][ T8465] device hsr_slave_0 entered promiscuous mode [ 77.680622][ T8465] device hsr_slave_1 entered promiscuous mode [ 77.813356][ T8465] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.827797][ T8465] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.841435][ T8465] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.855087][ T8465] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.898280][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.906544][ T8465] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.916569][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.924874][ T8465] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.981703][ T8465] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.998569][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.014561][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.025780][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.035215][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.053755][ T8465] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.066811][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.078063][ T4871] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.087021][ T4871] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.111604][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.121673][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.130279][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.145309][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.156590][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.181202][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.191773][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.202073][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.216980][ T8465] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.241339][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.252893][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.274539][ T8465] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.297846][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.308023][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.333060][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.343370][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.356481][ T8688] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.367011][ T8688] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.377175][ T8465] device veth0_vlan entered promiscuous mode [ 78.393966][ T8465] device veth1_vlan entered promiscuous mode [ 78.418828][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.431405][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.440778][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.452706][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.465218][ T8465] device veth0_macvtap entered promiscuous mode [ 78.477973][ T8465] device veth1_macvtap entered promiscuous mode [ 78.501181][ T8465] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.510260][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready executing program [ 78.518772][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.528627][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.539234][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.555285][ T8465] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.563529][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.574434][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.588508][ T8465] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.600537][ T8465] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.611138][ T8465] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.620996][ T8465] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.737367][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.768582][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.780848][ T4871] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.798803][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.812375][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.824419][ T8688] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/07 00:12:46 building call list... [ 79.459953][ T9] ------------[ cut here ]------------ [ 79.465939][ T9] hook not found, pf 3 num 0 [ 79.466622][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 79.485715][ T9] Modules linked in: [ 79.498355][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 79.507697][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.519788][ T9] Workqueue: netns cleanup_net [ 79.524869][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.533418][ T9] 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 d0 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 e9 16 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 79.556907][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 79.563770][ T9] RAX: 0000000000000000 RBX: ffff8880243f5500 RCX: 0000000000000000 [ 79.572637][ T9] RDX: ffff888011d50000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 79.582037][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.593124][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802c9d0f20 [ 79.603074][ T9] R13: 0000000000000000 R14: ffff888016d54500 R15: 0000000000000001 [ 79.612270][ T9] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 79.622207][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.630293][ T9] CR2: 00007f74ba45fe60 CR3: 0000000024093000 CR4: 00000000001506e0 [ 79.639153][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.648431][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.657280][ T9] Call Trace: [ 79.661253][ T9] nf_unregister_net_hooks+0x117/0x160 [ 79.667365][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.675149][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 79.683211][ T9] cleanup_net+0x451/0xb10 [ 79.688855][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.695167][ T9] process_one_work+0x98d/0x1600 [ 79.701557][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.707937][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 79.714399][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 79.720835][ T9] worker_thread+0x64c/0x1120 [ 79.726177][ T9] ? process_one_work+0x1600/0x1600 [ 79.732659][ T9] kthread+0x3b1/0x4a0 [ 79.737594][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 79.750894][ T9] ret_from_fork+0x1f/0x30 [ 79.756167][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 79.763848][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 79.772245][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.783889][ T9] Workqueue: netns cleanup_net [ 79.790356][ T9] Call Trace: [ 79.794126][ T9] dump_stack+0x141/0x1d7 [ 79.799211][ T9] panic+0x306/0x73d [ 79.803846][ T9] ? __warn_printk+0xf3/0xf3 [ 79.809337][ T9] ? __warn.cold+0x1a/0x44 [ 79.815097][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.822188][ T9] __warn.cold+0x35/0x44 [ 79.827436][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.833872][ T9] report_bug+0x1bd/0x210 [ 79.838328][ T9] handle_bug+0x3c/0x60 [ 79.842926][ T9] exc_invalid_op+0x14/0x40 [ 79.847997][ T9] asm_exc_invalid_op+0x12/0x20 [ 79.853624][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.861061][ T9] 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 d0 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 e9 16 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 79.882492][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 79.889609][ T9] RAX: 0000000000000000 RBX: ffff8880243f5500 RCX: 0000000000000000 [ 79.898291][ T9] RDX: ffff888011d50000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 79.907051][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.915684][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802c9d0f20 [ 79.924306][ T9] R13: 0000000000000000 R14: ffff888016d54500 R15: 0000000000000001 [ 79.933047][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 79.938568][ T9] ? vprintk+0x95/0x260 [ 79.943050][ T9] nf_unregister_net_hooks+0x117/0x160 [ 79.949488][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.956877][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 79.963120][ T9] cleanup_net+0x451/0xb10 [ 79.967790][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.973659][ T9] process_one_work+0x98d/0x1600 [ 79.978769][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.984173][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 79.989387][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 79.994636][ T9] worker_thread+0x64c/0x1120 [ 79.999825][ T9] ? process_one_work+0x1600/0x1600 [ 80.005474][ T9] kthread+0x3b1/0x4a0 [ 80.009545][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 80.014833][ T9] ret_from_fork+0x1f/0x30 [ 80.019972][ T9] Kernel Offset: disabled [ 80.025950][ T9] Rebooting in 86400 seconds..