[ OK ] Reached target Login Prompts. [ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.58' (ECDSA) to the list of known hosts. 2021/05/03 15:30:50 fuzzer started 2021/05/03 15:30:50 connecting to host at 10.128.0.169:34465 2021/05/03 15:30:50 checking machine... 2021/05/03 15:30:50 checking revisions... 2021/05/03 15:30:50 testing simple program... syzkaller login: [ 75.761091][ T8417] chnl_net:caif_netlink_parms(): no params data found [ 75.820605][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.829626][ T8417] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.838710][ T8417] device bridge_slave_0 entered promiscuous mode [ 75.849262][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.857519][ T8417] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.866327][ T8417] device bridge_slave_1 entered promiscuous mode [ 75.887653][ T8417] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.899894][ T8417] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.924704][ T8417] team0: Port device team_slave_0 added [ 75.934244][ T8417] team0: Port device team_slave_1 added [ 75.951262][ T8417] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.958723][ T8417] 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. [ 75.986046][ T8417] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.999304][ T8417] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.007537][ T8417] 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. [ 76.034590][ T8417] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.062742][ T8417] device hsr_slave_0 entered promiscuous mode [ 76.069424][ T8417] device hsr_slave_1 entered promiscuous mode [ 76.195248][ T8417] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.207861][ T8417] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.219894][ T8417] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.232564][ T8417] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.260497][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.269976][ T8417] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.280539][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.288924][ T8417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.336074][ T8417] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.349942][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.364856][ T3158] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.375840][ T3158] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.385750][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.401786][ T8417] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.424413][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.434245][ T4808] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.441712][ T4808] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.450188][ T4808] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.460154][ T4808] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.468031][ T4808] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.491228][ T8417] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 76.506452][ T8417] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 76.521163][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.530845][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.540004][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.550073][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.559463][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.568508][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.593624][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.602267][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.615292][ T8417] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.636074][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.656896][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.666852][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.674817][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.685565][ T8417] device veth0_vlan entered promiscuous mode [ 76.700645][ T8417] device veth1_vlan entered promiscuous mode [ 76.726330][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.737118][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.747271][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.760763][ T8417] device veth0_macvtap entered promiscuous mode [ 76.775135][ T8417] device veth1_macvtap entered promiscuous mode [ 76.799765][ T8417] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.807995][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.818235][ T3158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.834868][ T8417] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.842592][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.852742][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.866175][ T8417] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.877086][ T8417] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.886478][ T8417] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.896249][ T8417] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.995018][ T211] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.003836][ T211] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.035761][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.051537][ T211] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.064024][ T211] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.075986][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program 2021/05/03 15:30:53 building call list... [ 77.747212][ T255] ------------[ cut here ]------------ [ 77.766024][ T255] hook not found, pf 3 num 0 [ 77.766666][ T255] WARNING: CPU: 0 PID: 255 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.787201][ T255] Modules linked in: [ 77.791332][ T255] CPU: 0 PID: 255 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 77.800830][ T255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.814607][ T255] Workqueue: netns cleanup_net [ 77.819616][ T255] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.832740][ T255] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.855764][ T255] RSP: 0018:ffffc90001b3fbc0 EFLAGS: 00010286 [ 77.863098][ T255] RAX: 0000000000000000 RBX: ffff888021491b00 RCX: 0000000000000000 [ 77.871228][ T255] RDX: ffff888012acd4c0 RSI: ffffffff815c8ba5 RDI: fffff52000367f6a [ 77.881284][ T255] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.890159][ T255] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888028878f20 [ 77.899056][ T255] R13: 0000000000000000 R14: ffff8880214c5600 R15: 0000000000000001 [ 77.910427][ T255] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 77.920646][ T255] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.928990][ T255] CR2: 00007f592d1b1000 CR3: 000000001298b000 CR4: 00000000001506f0 [ 77.938139][ T255] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.947446][ T255] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.956437][ T255] Call Trace: [ 77.959842][ T255] nf_unregister_net_hooks+0x117/0x160 [ 77.967371][ T255] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.974607][ T255] ? arptable_filter_net_exit+0x20/0x20 [ 77.980460][ T255] cleanup_net+0x451/0xb10 [ 77.988717][ T255] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.995541][ T255] process_one_work+0x98d/0x1600 [ 78.000573][ T255] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.007136][ T255] ? rwlock_bug.part.0+0x90/0x90 [ 78.013180][ T255] ? _raw_spin_lock_irq+0x41/0x50 [ 78.018266][ T255] worker_thread+0x64c/0x1120 [ 78.024291][ T255] ? process_one_work+0x1600/0x1600 [ 78.029798][ T255] kthread+0x3b1/0x4a0 [ 78.035808][ T255] ? __kthread_bind_mask+0xc0/0xc0 [ 78.041165][ T255] ret_from_fork+0x1f/0x30 [ 78.047502][ T255] Kernel panic - not syncing: panic_on_warn set ... [ 78.054110][ T255] CPU: 0 PID: 255 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 78.062639][ T255] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.073099][ T255] Workqueue: netns cleanup_net [ 78.078500][ T255] Call Trace: [ 78.082072][ T255] dump_stack+0x141/0x1d7 [ 78.086522][ T255] panic+0x306/0x73d [ 78.090443][ T255] ? __warn_printk+0xf3/0xf3 [ 78.095064][ T255] ? __warn.cold+0x1a/0x44 [ 78.099984][ T255] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.106123][ T255] __warn.cold+0x35/0x44 [ 78.110920][ T255] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.116919][ T255] report_bug+0x1bd/0x210 [ 78.121642][ T255] handle_bug+0x3c/0x60 [ 78.125906][ T255] exc_invalid_op+0x14/0x40 [ 78.130778][ T255] asm_exc_invalid_op+0x12/0x20 [ 78.135757][ T255] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.142304][ T255] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.162558][ T255] RSP: 0018:ffffc90001b3fbc0 EFLAGS: 00010286 [ 78.169018][ T255] RAX: 0000000000000000 RBX: ffff888021491b00 RCX: 0000000000000000 [ 78.177746][ T255] RDX: ffff888012acd4c0 RSI: ffffffff815c8ba5 RDI: fffff52000367f6a [ 78.186648][ T255] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.194805][ T255] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888028878f20 [ 78.203033][ T255] R13: 0000000000000000 R14: ffff8880214c5600 R15: 0000000000000001 [ 78.211031][ T255] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.216260][ T255] ? vprintk+0x95/0x260 [ 78.220454][ T255] nf_unregister_net_hooks+0x117/0x160 [ 78.226044][ T255] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.232098][ T255] ? arptable_filter_net_exit+0x20/0x20 [ 78.237769][ T255] cleanup_net+0x451/0xb10 [ 78.242294][ T255] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.247696][ T255] process_one_work+0x98d/0x1600 [ 78.252666][ T255] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.258180][ T255] ? rwlock_bug.part.0+0x90/0x90 [ 78.263413][ T255] ? _raw_spin_lock_irq+0x41/0x50 [ 78.268588][ T255] worker_thread+0x64c/0x1120 [ 78.274214][ T255] ? process_one_work+0x1600/0x1600 [ 78.279952][ T255] kthread+0x3b1/0x4a0 [ 78.284099][ T255] ? __kthread_bind_mask+0xc0/0xc0 [ 78.289770][ T255] ret_from_fork+0x1f/0x30 [ 78.295846][ T255] Kernel Offset: disabled [ 78.300597][ T255] Rebooting in 86400 seconds..