[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts. 2021/05/04 04:18:13 fuzzer started 2021/05/04 04:18:14 connecting to host at 10.128.0.169:38911 2021/05/04 04:18:14 checking machine... 2021/05/04 04:18:14 checking revisions... 2021/05/04 04:18:14 testing simple program... syzkaller login: [ 74.514024][ T8402] chnl_net:caif_netlink_parms(): no params data found [ 74.566907][ T8402] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.575114][ T8402] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.585448][ T8402] device bridge_slave_0 entered promiscuous mode [ 74.595724][ T8402] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.603260][ T8402] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.612980][ T8402] device bridge_slave_1 entered promiscuous mode [ 74.633799][ T8402] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.645361][ T8402] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.669669][ T8402] team0: Port device team_slave_0 added [ 74.678598][ T8402] team0: Port device team_slave_1 added [ 74.696127][ T8402] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.703656][ T8402] 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. [ 74.731449][ T8402] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.744439][ T8402] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.752010][ T8402] 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. [ 74.778612][ T8402] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.804528][ T8402] device hsr_slave_0 entered promiscuous mode [ 74.811303][ T8402] device hsr_slave_1 entered promiscuous mode [ 74.912425][ T8402] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.923337][ T8402] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.933663][ T8402] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.944237][ T8402] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.970703][ T8402] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.977940][ T8402] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.986011][ T8402] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.993273][ T8402] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.040981][ T8402] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.055757][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.069404][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.078622][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.087758][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.102399][ T8402] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.115135][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.125178][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.132591][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.159352][ T4805] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.170989][ T4805] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.178581][ T4805] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.197078][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.208043][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.225460][ T8402] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.237929][ T8402] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.252922][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.262246][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.271937][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.281410][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.303090][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.311514][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.324968][ T8402] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.344123][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.364782][ T4805] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.373713][ T4805] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.381889][ T4805] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.394895][ T8402] device veth0_vlan entered promiscuous mode [ 75.408630][ T8402] device veth1_vlan entered promiscuous mode [ 75.431385][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.440273][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.449192][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.460306][ T8402] device veth0_macvtap entered promiscuous mode [ 75.472241][ T8402] device veth1_macvtap entered promiscuous mode [ 75.490684][ T8402] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.500271][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.511055][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.523086][ T8402] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.531789][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.542241][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.553997][ T8402] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.564291][ T8402] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.573981][ T8402] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.584142][ T8402] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.680300][ T28] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.700235][ T28] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.715381][ T4805] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.752209][ T28] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.761892][ T28] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.772434][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/04 04:18:17 building call list... executing program [ 76.492035][ T319] ------------[ cut here ]------------ [ 76.500643][ T319] hook not found, pf 3 num 0 [ 76.501244][ T319] WARNING: CPU: 0 PID: 319 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 76.521677][ T319] Modules linked in: [ 76.527281][ T319] CPU: 0 PID: 319 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 76.535387][ T319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.549828][ T319] Workqueue: netns cleanup_net [ 76.554650][ T319] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.562091][ T319] 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 90 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 76.589303][ T319] RSP: 0018:ffffc90001f3fbc0 EFLAGS: 00010286 [ 76.595414][ T319] RAX: 0000000000000000 RBX: ffff888021dff600 RCX: 0000000000000000 [ 76.605252][ T319] RDX: ffff8880126f0000 RSI: ffffffff815c8ba5 RDI: fffff520003e7f6a [ 76.614271][ T319] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.623350][ T319] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880286a8f20 [ 76.632290][ T319] R13: 0000000000000000 R14: ffff888014489800 R15: 0000000000000001 [ 76.641829][ T319] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 76.651799][ T319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.675372][ T319] CR2: 00007f7df1921000 CR3: 0000000015c9b000 CR4: 00000000001506f0 [ 76.685546][ T319] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.694720][ T319] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.703440][ T319] Call Trace: [ 76.708651][ T319] nf_unregister_net_hooks+0x117/0x160 [ 76.714341][ T319] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.722678][ T319] ? arptable_filter_net_exit+0x20/0x20 [ 76.729119][ T319] cleanup_net+0x451/0xb10 [ 76.733572][ T319] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.742127][ T319] process_one_work+0x98d/0x1600 [ 76.748029][ T319] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.753447][ T319] ? rwlock_bug.part.0+0x90/0x90 [ 76.759905][ T319] ? _raw_spin_lock_irq+0x41/0x50 [ 76.764994][ T319] worker_thread+0x64c/0x1120 [ 76.772097][ T319] ? process_one_work+0x1600/0x1600 [ 76.778309][ T319] kthread+0x3b1/0x4a0 [ 76.782413][ T319] ? __kthread_bind_mask+0xc0/0xc0 [ 76.788916][ T319] ret_from_fork+0x1f/0x30 [ 76.793383][ T319] Kernel panic - not syncing: panic_on_warn set ... [ 76.800066][ T319] CPU: 0 PID: 319 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 76.808143][ T319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.818670][ T319] Workqueue: netns cleanup_net [ 76.823457][ T319] Call Trace: [ 76.826920][ T319] dump_stack+0x141/0x1d7 [ 76.831276][ T319] panic+0x306/0x73d [ 76.835195][ T319] ? __warn_printk+0xf3/0xf3 [ 76.839812][ T319] ? __warn.cold+0x1a/0x44 [ 76.844268][ T319] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.850018][ T319] __warn.cold+0x35/0x44 [ 76.854284][ T319] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.860043][ T319] report_bug+0x1bd/0x210 [ 76.864398][ T319] handle_bug+0x3c/0x60 [ 76.868579][ T319] exc_invalid_op+0x14/0x40 [ 76.873110][ T319] asm_exc_invalid_op+0x12/0x20 [ 76.878095][ T319] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.884443][ T319] 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 90 4a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 76.904157][ T319] RSP: 0018:ffffc90001f3fbc0 EFLAGS: 00010286 [ 76.910243][ T319] RAX: 0000000000000000 RBX: ffff888021dff600 RCX: 0000000000000000 [ 76.918421][ T319] RDX: ffff8880126f0000 RSI: ffffffff815c8ba5 RDI: fffff520003e7f6a [ 76.926419][ T319] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.934498][ T319] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff8880286a8f20 [ 76.942494][ T319] R13: 0000000000000000 R14: ffff888014489800 R15: 0000000000000001 [ 76.950492][ T319] ? wake_up_klogd.part.0+0x8e/0xd0 [ 76.955905][ T319] ? vprintk+0x95/0x260 [ 76.960455][ T319] nf_unregister_net_hooks+0x117/0x160 [ 76.965946][ T319] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.971866][ T319] ? arptable_filter_net_exit+0x20/0x20 [ 76.977540][ T319] cleanup_net+0x451/0xb10 [ 76.982000][ T319] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.987420][ T319] process_one_work+0x98d/0x1600 [ 76.992401][ T319] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.998062][ T319] ? rwlock_bug.part.0+0x90/0x90 [ 77.003221][ T319] ? _raw_spin_lock_irq+0x41/0x50 [ 77.008279][ T319] worker_thread+0x64c/0x1120 [ 77.013120][ T319] ? process_one_work+0x1600/0x1600 [ 77.018428][ T319] kthread+0x3b1/0x4a0 [ 77.022515][ T319] ? __kthread_bind_mask+0xc0/0xc0 [ 77.027734][ T319] ret_from_fork+0x1f/0x30 [ 77.033463][ T319] Kernel Offset: disabled [ 77.038127][ T319] Rebooting in 86400 seconds..