[ 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 '10.128.1.10' (ECDSA) to the list of known hosts. 2021/04/30 00:34:38 fuzzer started 2021/04/30 00:34:38 connecting to host at 10.128.0.169:39027 2021/04/30 00:34:38 checking machine... 2021/04/30 00:34:38 checking revisions... 2021/04/30 00:34:38 testing simple program... syzkaller login: [ 80.286340][ T8411] chnl_net:caif_netlink_parms(): no params data found [ 80.348621][ T8411] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.358268][ T8411] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.368143][ T8411] device bridge_slave_0 entered promiscuous mode [ 80.379418][ T8411] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.389345][ T8411] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.399858][ T8411] device bridge_slave_1 entered promiscuous mode [ 80.423147][ T8411] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.435956][ T8411] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.464035][ T8411] team0: Port device team_slave_0 added [ 80.473229][ T8411] team0: Port device team_slave_1 added [ 80.493010][ T8411] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.500789][ T8411] 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. [ 80.532639][ T8411] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.547653][ T8411] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.556381][ T8411] 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. [ 80.586007][ T8411] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.616392][ T8411] device hsr_slave_0 entered promiscuous mode [ 80.624144][ T8411] device hsr_slave_1 entered promiscuous mode [ 80.733957][ T8411] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.744995][ T8411] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.757562][ T8411] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.769285][ T8411] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.798386][ T8411] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.806771][ T8411] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.816294][ T8411] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.824248][ T8411] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.881769][ T8411] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.897054][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.912652][ T2938] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.922199][ T2938] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.932947][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 80.948077][ T8411] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.961180][ T3233] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.971292][ T3233] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.978730][ T3233] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.997109][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.007417][ T2938] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.014950][ T2938] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.033825][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.044233][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.054943][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.068469][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.084752][ T8411] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 81.098414][ T8411] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.108616][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.130181][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 81.137851][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 81.148560][ T8411] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.174772][ T8632] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 81.202645][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 81.214446][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 81.223855][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.232891][ T8411] device veth0_vlan entered promiscuous mode [ 81.248906][ T8411] device veth1_vlan entered promiscuous mode [ 81.260568][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.287125][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 81.299692][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.312552][ T8411] device veth0_macvtap entered promiscuous mode [ 81.327505][ T8411] device veth1_macvtap entered promiscuous mode [ 81.351395][ T8411] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.363794][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 81.378967][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 81.393892][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.407414][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.424839][ T8411] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.443649][ T8411] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.456502][ T8411] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.468214][ T8411] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.480449][ T8411] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.501696][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 81.513192][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 81.621322][ T914] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.635911][ T914] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.647078][ T108] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.658953][ T108] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.664751][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.681404][ T2938] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/30 00:34:41 building call list... [ 84.174776][ T8665] can: request_module (can-proto-0) failed. [ 84.193555][ T8665] can: request_module (can-proto-0) failed. [ 84.207777][ T8665] can: request_module (can-proto-0) failed. [ 84.334412][ T108] ------------[ cut here ]------------ [ 84.346700][ T108] hook not found, pf 3 num 0 [ 84.347333][ T108] WARNING: CPU: 1 PID: 108 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 84.365959][ T108] Modules linked in: [ 84.370796][ T108] CPU: 1 PID: 108 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 84.383272][ T108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.395625][ T108] Workqueue: netns cleanup_net [ 84.402984][ T108] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 84.412920][ T108] 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 60 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 84.443137][ T108] RSP: 0018:ffffc9000121fbc0 EFLAGS: 00010286 [ 84.450154][ T108] RAX: 0000000000000000 RBX: ffff888147896c00 RCX: 0000000000000000 [ 84.458764][ T108] RDX: ffff888012371c40 RSI: ffffffff815c8ba5 RDI: fffff52000243f6a [ 84.467878][ T108] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 84.477766][ T108] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802f600f20 [ 84.487018][ T108] R13: 0000000000000000 R14: ffff888021357800 R15: 0000000000000001 [ 84.496742][ T108] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 84.507375][ T108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.515008][ T108] CR2: 0000000000f43ef0 CR3: 0000000024afe000 CR4: 00000000001506e0 [ 84.523884][ T108] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.533341][ T108] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.542038][ T108] Call Trace: [ 84.545465][ T108] nf_unregister_net_hooks+0x117/0x160 [ 84.552044][ T108] arpt_unregister_table_pre_exit+0x67/0x80 [ 84.558139][ T108] ? arptable_filter_net_exit+0x20/0x20 [ 84.567132][ T108] cleanup_net+0x451/0xb10 [ 84.572225][ T108] ? ops_free_list.part.0+0x3d0/0x3d0 [ 84.577849][ T108] process_one_work+0x98d/0x1600 [ 84.583405][ T108] ? pwq_dec_nr_in_flight+0x320/0x320 executing program [ 84.589175][ T108] ? rwlock_bug.part.0+0x90/0x90 [ 84.595036][ T108] ? _raw_spin_lock_irq+0x41/0x50 [ 84.600888][ T108] worker_thread+0x64c/0x1120 [ 84.606504][ T108] ? process_one_work+0x1600/0x1600 [ 84.612765][ T108] kthread+0x3b1/0x4a0 [ 84.617081][ T108] ? __kthread_bind_mask+0xc0/0xc0 [ 84.624246][ T108] ret_from_fork+0x1f/0x30 [ 84.629099][ T108] Kernel panic - not syncing: panic_on_warn set ... [ 84.636212][ T108] CPU: 1 PID: 108 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 84.644958][ T108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.656514][ T108] Workqueue: netns cleanup_net [ 84.661965][ T108] Call Trace: [ 84.665439][ T108] dump_stack+0x141/0x1d7 [ 84.670049][ T108] panic+0x306/0x73d [ 84.673958][ T108] ? __warn_printk+0xf3/0xf3 [ 84.679101][ T108] ? __warn.cold+0x1a/0x44 [ 84.683625][ T108] ? __nf_unregister_net_hook+0x1eb/0x610 [ 84.689515][ T108] __warn.cold+0x35/0x44 [ 84.693784][ T108] ? __nf_unregister_net_hook+0x1eb/0x610 [ 84.699502][ T108] report_bug+0x1bd/0x210 [ 84.704189][ T108] handle_bug+0x3c/0x60 [ 84.708791][ T108] exc_invalid_op+0x14/0x40 [ 84.713966][ T108] asm_exc_invalid_op+0x12/0x20 [ 84.719357][ T108] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 84.726425][ T108] 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 60 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 84.748702][ T108] RSP: 0018:ffffc9000121fbc0 EFLAGS: 00010286 [ 84.755319][ T108] RAX: 0000000000000000 RBX: ffff888147896c00 RCX: 0000000000000000 [ 84.763737][ T108] RDX: ffff888012371c40 RSI: ffffffff815c8ba5 RDI: fffff52000243f6a [ 84.772960][ T108] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 84.781303][ T108] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802f600f20 [ 84.789717][ T108] R13: 0000000000000000 R14: ffff888021357800 R15: 0000000000000001 [ 84.798247][ T108] ? wake_up_klogd.part.0+0x8e/0xd0 [ 84.803650][ T108] ? vprintk+0x95/0x260 [ 84.807902][ T108] nf_unregister_net_hooks+0x117/0x160 [ 84.813710][ T108] arpt_unregister_table_pre_exit+0x67/0x80 [ 84.820290][ T108] ? arptable_filter_net_exit+0x20/0x20 [ 84.826340][ T108] cleanup_net+0x451/0xb10 [ 84.831050][ T108] ? ops_free_list.part.0+0x3d0/0x3d0 [ 84.836527][ T108] process_one_work+0x98d/0x1600 [ 84.841564][ T108] ? pwq_dec_nr_in_flight+0x320/0x320 [ 84.850002][ T108] ? rwlock_bug.part.0+0x90/0x90 [ 84.855460][ T108] ? _raw_spin_lock_irq+0x41/0x50 [ 84.866137][ T108] worker_thread+0x64c/0x1120 [ 84.872939][ T108] ? process_one_work+0x1600/0x1600 [ 84.879024][ T108] kthread+0x3b1/0x4a0 [ 84.883809][ T108] ? __kthread_bind_mask+0xc0/0xc0 [ 84.889641][ T108] ret_from_fork+0x1f/0x30 [ 84.897076][ T108] Kernel Offset: disabled [ 84.902532][ T108] Rebooting in 86400 seconds..