[ 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 '10.128.10.3' (ECDSA) to the list of known hosts. 2021/05/04 11:16:20 fuzzer started 2021/05/04 11:16:20 connecting to host at 10.128.0.169:41333 2021/05/04 11:16:20 checking machine... 2021/05/04 11:16:20 checking revisions... 2021/05/04 11:16:20 testing simple program... syzkaller login: [ 73.040890][ T8396] chnl_net:caif_netlink_parms(): no params data found [ 73.095000][ T8396] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.103438][ T8396] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.111557][ T8396] device bridge_slave_0 entered promiscuous mode [ 73.121781][ T8396] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.129252][ T8396] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.137730][ T8396] device bridge_slave_1 entered promiscuous mode [ 73.157577][ T8396] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.169861][ T8396] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.193663][ T8396] team0: Port device team_slave_0 added [ 73.201269][ T8396] team0: Port device team_slave_1 added [ 73.218526][ T8396] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.225654][ T8396] 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. [ 73.252557][ T8396] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.266135][ T8396] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.273478][ T8396] 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. [ 73.300371][ T8396] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.328492][ T8396] device hsr_slave_0 entered promiscuous mode [ 73.335725][ T8396] device hsr_slave_1 entered promiscuous mode [ 73.440393][ T8396] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.453034][ T8396] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.464925][ T8396] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.475286][ T8396] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.501571][ T8396] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.509284][ T8396] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.519329][ T8396] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.526784][ T8396] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.578033][ T8396] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.592181][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.607052][ T3146] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.615611][ T3146] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.626733][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.641337][ T8396] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.654850][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.664764][ T3146] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.672336][ T3146] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.693173][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.702097][ T3146] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.709487][ T3146] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.718395][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.739047][ T8396] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.751871][ T8396] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.768900][ T8615] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.778776][ T8615] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.787838][ T8615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.798440][ T8615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.821333][ T8396] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.834795][ T4925] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.844061][ T4925] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.851682][ T4925] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.873144][ T4925] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.904770][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.914762][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.925401][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.936697][ T8396] device veth0_vlan entered promiscuous mode [ 73.952013][ T8396] device veth1_vlan entered promiscuous mode [ 73.976816][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.986629][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.997916][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.011000][ T8396] device veth0_macvtap entered promiscuous mode [ 74.022577][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.035095][ T8396] device veth1_macvtap entered promiscuous mode [ 74.057674][ T8396] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.066903][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.077469][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.089833][ T8396] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.100700][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.110697][ T8616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.123373][ T8396] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.133928][ T8396] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.153891][ T8396] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.163606][ T8396] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.260651][ T28] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.278738][ T28] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.301983][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.302648][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.319717][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.341649][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program 2021/05/04 11:16:23 building call list... [ 74.945448][ T9] ------------[ cut here ]------------ [ 74.951150][ T9] hook not found, pf 3 num 0 [ 74.951799][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.970327][ T9] Modules linked in: [ 74.976366][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 74.986675][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.998592][ T9] Workqueue: netns cleanup_net [ 75.005727][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.013018][ 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 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 [ 75.036278][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 75.045428][ T9] RAX: 0000000000000000 RBX: ffff888020f1f600 RCX: 0000000000000000 [ 75.055628][ T9] RDX: ffff888011d60000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 75.064422][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.074673][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888036128f20 [ 75.083738][ T9] R13: 0000000000000000 R14: ffff88801283ff00 R15: 0000000000000001 [ 75.091880][ T9] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 75.104553][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.111304][ T9] CR2: 00007f1f54e56000 CR3: 0000000019a0c000 CR4: 00000000001506e0 [ 75.122319][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.130623][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.141245][ T9] Call Trace: [ 75.145420][ T9] nf_unregister_net_hooks+0x117/0x160 [ 75.151180][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.159787][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 75.172862][ T9] cleanup_net+0x451/0xb10 [ 75.177518][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.185780][ T9] process_one_work+0x98d/0x1600 [ 75.191126][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.197788][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 75.205620][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 75.211014][ T9] worker_thread+0x64c/0x1120 [ 75.217169][ T9] ? process_one_work+0x1600/0x1600 [ 75.224578][ T9] kthread+0x3b1/0x4a0 [ 75.228901][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 75.235411][ T9] ret_from_fork+0x1f/0x30 [ 75.240880][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 75.247821][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 75.256053][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.267170][ T9] Workqueue: netns cleanup_net [ 75.272212][ T9] Call Trace: [ 75.275749][ T9] dump_stack+0x141/0x1d7 [ 75.280341][ T9] panic+0x306/0x73d [ 75.284434][ T9] ? __warn_printk+0xf3/0xf3 [ 75.289381][ T9] ? __warn.cold+0x1a/0x44 [ 75.293960][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.300213][ T9] __warn.cold+0x35/0x44 [ 75.304820][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.310739][ T9] report_bug+0x1bd/0x210 [ 75.315096][ T9] handle_bug+0x3c/0x60 [ 75.319262][ T9] exc_invalid_op+0x14/0x40 [ 75.323950][ T9] asm_exc_invalid_op+0x12/0x20 [ 75.329342][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.336162][ 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 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 [ 75.357909][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 75.364255][ T9] RAX: 0000000000000000 RBX: ffff888020f1f600 RCX: 0000000000000000 [ 75.372759][ T9] RDX: ffff888011d60000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 75.381094][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.389771][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888036128f20 [ 75.397763][ T9] R13: 0000000000000000 R14: ffff88801283ff00 R15: 0000000000000001 [ 75.405821][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.411283][ T9] ? vprintk+0x95/0x260 [ 75.415539][ T9] nf_unregister_net_hooks+0x117/0x160 [ 75.421166][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.427061][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 75.432787][ T9] cleanup_net+0x451/0xb10 [ 75.437202][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.442758][ T9] process_one_work+0x98d/0x1600 [ 75.447704][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.453162][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 75.458113][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 75.463231][ T9] worker_thread+0x64c/0x1120 [ 75.468220][ T9] ? process_one_work+0x1600/0x1600 [ 75.473501][ T9] kthread+0x3b1/0x4a0 [ 75.477700][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 75.482833][ T9] ret_from_fork+0x1f/0x30 [ 75.489041][ T9] Kernel Offset: disabled [ 75.494168][ T9] Rebooting in 86400 seconds..