[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.7' (ECDSA) to the list of known hosts. 2021/05/10 12:35:42 fuzzer started 2021/05/10 12:35:42 connecting to host at 10.128.0.169:35963 2021/05/10 12:35:42 checking machine... 2021/05/10 12:35:42 checking revisions... 2021/05/10 12:35:42 testing simple program... syzkaller login: [ 77.267077][ T8413] chnl_net:caif_netlink_parms(): no params data found [ 77.325614][ T8413] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.337065][ T8413] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.346939][ T8413] device bridge_slave_0 entered promiscuous mode [ 77.358956][ T8413] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.367673][ T8413] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.378920][ T8413] device bridge_slave_1 entered promiscuous mode [ 77.401686][ T8413] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.416437][ T8413] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.443510][ T8413] team0: Port device team_slave_0 added [ 77.454143][ T8413] team0: Port device team_slave_1 added [ 77.475433][ T8413] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.484002][ 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. [ 77.516327][ T8413] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.531534][ T8413] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.540338][ 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. [ 77.569217][ T8413] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 77.601069][ T8413] device hsr_slave_0 entered promiscuous mode [ 77.609962][ T8413] device hsr_slave_1 entered promiscuous mode [ 77.719896][ T8413] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.733136][ T8413] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.745386][ T8413] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.758930][ T8413] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.786954][ T8413] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.795025][ T8413] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.803564][ T8413] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.811517][ T8413] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.856999][ T8413] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.874010][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.889267][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.900140][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.912110][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 77.929913][ T8413] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.942836][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.953732][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.961444][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.975195][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.986437][ T20] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.995186][ T20] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.019262][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.031459][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.054326][ T8413] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 78.067706][ T8413] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.081871][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.092171][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.101915][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.113834][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.136055][ T8413] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.146671][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.155026][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.176452][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.197669][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.209653][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.218695][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.231371][ T8413] device veth0_vlan entered promiscuous mode [ 78.244307][ T8413] device veth1_vlan entered promiscuous mode [ 78.272006][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.281402][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.295598][ T8413] device veth0_macvtap entered promiscuous mode [ 78.306837][ T8413] device veth1_macvtap entered promiscuous mode [ 78.326647][ T8413] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.335888][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.346757][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.356054][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.365201][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.381426][ T8413] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.389026][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.400189][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.415361][ T8413] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.426294][ T8413] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.435776][ T8413] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.445576][ T8413] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 78.545962][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.555560][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.585901][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.614277][ T157] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.624154][ T157] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.634966][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/10 12:35:45 building call list... [ 79.368212][ T25] ------------[ cut here ]------------ [ 79.375298][ T25] hook not found, pf 3 num 0 [ 79.375949][ T25] WARNING: CPU: 0 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 79.399578][ T25] Modules linked in: [ 79.404110][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 79.416732][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.429806][ T25] Workqueue: netns cleanup_net [ 79.434628][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.443486][ 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 c0 d8 6d 8a e8 40 4d 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 19 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 79.479351][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 79.485629][ T25] RAX: 0000000000000000 RBX: ffff8880246e2e00 RCX: 0000000000000000 [ 79.496153][ T25] RDX: ffff888015153880 RSI: ffffffff815c8ba5 RDI: fffff520001bff6a [ 79.508399][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.519793][ T25] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802aee0f20 [ 79.529573][ T25] R13: 0000000000000000 R14: ffff888022978900 R15: 0000000000000001 [ 79.544247][ T25] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 79.554596][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.564082][ T25] CR2: 00007f0cae5f1000 CR3: 0000000016b01000 CR4: 00000000001506f0 [ 79.573634][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.584549][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.594418][ T25] Call Trace: [ 79.600706][ T25] nf_unregister_net_hooks+0x117/0x160 [ 79.607672][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.614123][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 79.627998][ T25] cleanup_net+0x451/0xb10 [ 79.632679][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.638428][ T25] process_one_work+0x98d/0x1600 [ 79.644054][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.651171][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 79.656351][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 79.662188][ T25] worker_thread+0x64c/0x1120 [ 79.669118][ T25] ? process_one_work+0x1600/0x1600 [ 79.674716][ T25] kthread+0x3b1/0x4a0 [ 79.679873][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 79.685046][ T25] ret_from_fork+0x1f/0x30 [ 79.692037][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 79.699027][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 79.707923][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.718193][ T25] Workqueue: netns cleanup_net [ 79.723392][ T25] Call Trace: [ 79.726690][ T25] dump_stack+0x141/0x1d7 [ 79.731335][ T25] panic+0x306/0x73d [ 79.735528][ T25] ? __warn_printk+0xf3/0xf3 [ 79.740322][ T25] ? __warn.cold+0x1a/0x44 [ 79.745465][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.751652][ T25] __warn.cold+0x35/0x44 [ 79.755922][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 79.761930][ T25] report_bug+0x1bd/0x210 [ 79.766532][ T25] handle_bug+0x3c/0x60 [ 79.770973][ T25] exc_invalid_op+0x14/0x40 [ 79.775501][ T25] asm_exc_invalid_op+0x12/0x20 [ 79.780388][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 79.787031][ 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 c0 d8 6d 8a e8 40 4d 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 19 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 79.807564][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 79.814065][ T25] RAX: 0000000000000000 RBX: ffff8880246e2e00 RCX: 0000000000000000 [ 79.823023][ T25] RDX: ffff888015153880 RSI: ffffffff815c8ba5 RDI: fffff520001bff6a [ 79.831378][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 79.839455][ T25] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802aee0f20 [ 79.847709][ T25] R13: 0000000000000000 R14: ffff888022978900 R15: 0000000000000001 [ 79.855973][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 79.861321][ T25] ? vprintk+0x95/0x260 [ 79.866386][ T25] nf_unregister_net_hooks+0x117/0x160 [ 79.872078][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 79.878279][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 79.884124][ T25] cleanup_net+0x451/0xb10 [ 79.888583][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 79.894165][ T25] process_one_work+0x98d/0x1600 [ 79.899398][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 79.905342][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 79.910566][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 79.916065][ T25] worker_thread+0x64c/0x1120 [ 79.920888][ T25] ? process_one_work+0x1600/0x1600 [ 79.926114][ T25] kthread+0x3b1/0x4a0 [ 79.930378][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 79.936047][ T25] ret_from_fork+0x1f/0x30 [ 79.942541][ T25] Kernel Offset: disabled [ 79.948299][ T25] Rebooting in 86400 seconds..