[ OK ] Started Daily apt upgrade and clean activities. Starting Permit User Sessions... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. Starting System Logging Service... [ 64.410810][ T8125] sshd (8125) used greatest stack depth: 22648 bytes left [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty2. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.10.47' (ECDSA) to the list of known hosts. 2021/05/06 19:27:03 fuzzer started 2021/05/06 19:27:03 connecting to host at 10.128.0.169:33057 2021/05/06 19:27:03 checking machine... 2021/05/06 19:27:03 checking revisions... Debian GNU/Linux 9 syzkaller ttyS0 2021/05/06 19:27:03 testing simple program... syzkaller login: [ 82.231660][ T37] audit: type=1400 audit(1620329224.122:8): avc: denied { execmem } for pid=8448 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 83.623719][ T8449] chnl_net:caif_netlink_parms(): no params data found [ 83.681719][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.690047][ T8449] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.699298][ T8449] device bridge_slave_0 entered promiscuous mode [ 83.710086][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.719107][ T8449] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.728002][ T8449] device bridge_slave_1 entered promiscuous mode [ 83.750614][ T8449] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.762917][ T8449] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.789494][ T8449] team0: Port device team_slave_0 added [ 83.798977][ T8449] team0: Port device team_slave_1 added [ 83.818226][ T8449] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.825804][ T8449] 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. [ 83.852026][ T8449] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.865072][ T8449] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.872287][ T8449] 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. [ 83.898800][ T8449] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.929537][ T8449] device hsr_slave_0 entered promiscuous mode [ 83.936815][ T8449] device hsr_slave_1 entered promiscuous mode [ 84.065651][ T8449] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.078023][ T8449] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.089014][ T8449] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.101862][ T8449] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.136474][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.144106][ T8449] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.152763][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.160030][ T8449] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.211157][ T8449] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.225417][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.238619][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.248165][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.257981][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 84.273617][ T8449] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.286660][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.295894][ T27] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.303140][ T27] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.316444][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.316882][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.332508][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.355105][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 84.364418][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 84.379824][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 84.397939][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.408546][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.420266][ T8449] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.440753][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 84.449603][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 84.466361][ T8449] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.487013][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 84.511095][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 84.520638][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 84.529493][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 84.542335][ T8449] device veth0_vlan entered promiscuous mode [ 84.555263][ T8449] device veth1_vlan entered promiscuous mode [ 84.580839][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 84.590591][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 84.600626][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 84.613993][ T8449] device veth0_macvtap entered promiscuous mode [ 84.626190][ T8449] device veth1_macvtap entered promiscuous mode [ 84.645439][ T8449] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.655395][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 84.664977][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 84.678337][ T8449] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.687027][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 84.696269][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 84.709671][ T8449] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.721920][ T8449] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.738980][ T8449] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.748246][ T8449] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 84.854987][ T143] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.864960][ T143] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.882874][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 84.931150][ T187] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.939604][ T187] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.950103][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 19:27:06 building call list... [ 85.662189][ T25] ------------[ cut here ]------------ [ 85.670720][ T25] hook not found, pf 3 num 0 [ 85.671451][ T25] WARNING: CPU: 1 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 85.696249][ T25] Modules linked in: [ 85.700376][ T25] CPU: 1 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 85.711642][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.725585][ T25] Workqueue: netns cleanup_net [ 85.732782][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 85.741002][ 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 0b 6e 8a e8 c0 39 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 27 2a fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 85.773821][ T25] RSP: 0018:ffffc90000e17bc0 EFLAGS: 00010286 [ 85.783183][ T25] RAX: 0000000000000000 RBX: ffff888147c93e00 RCX: 0000000000000000 [ 85.792486][ T25] RDX: ffff8880161ae2c0 RSI: ffffffff815be065 RDI: fffff520001c2f6a [ 85.803428][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 85.812828][ T25] R10: ffffffff815b7e9e R11: 0000000000000000 R12: ffff8880229f4f60 [ 85.824949][ T25] R13: 0000000000000000 R14: ffff88801f8d3d80 R15: 0000000000000001 [ 85.834157][ T25] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 85.845725][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.855708][ T25] CR2: 00007f86d07d9018 CR3: 000000003019c000 CR4: 00000000001506e0 [ 85.866742][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.874789][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.885035][ T25] Call Trace: [ 85.891094][ T25] nf_unregister_net_hooks+0x117/0x160 [ 85.897747][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 85.904180][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 85.912979][ T25] cleanup_net+0x451/0xb10 [ 85.919595][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 85.925386][ T25] process_one_work+0x98d/0x1600 [ 85.933762][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 85.940513][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 85.945633][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 85.955481][ T25] worker_thread+0x64c/0x1120 [ 85.964969][ T25] ? process_one_work+0x1600/0x1600 [ 85.973134][ T25] kthread+0x3b1/0x4a0 [ 85.978450][ T25] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 85.985241][ T25] ret_from_fork+0x1f/0x30 [ 85.993147][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 86.000041][ T25] CPU: 1 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 86.008036][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.018735][ T25] Workqueue: netns cleanup_net [ 86.023546][ T25] Call Trace: [ 86.026839][ T25] dump_stack+0x141/0x1d7 [ 86.031190][ T25] panic+0x306/0x73d [ 86.035112][ T25] ? __warn_printk+0xf3/0xf3 [ 86.039814][ T25] ? __warn.cold+0x1a/0x44 [ 86.044258][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 86.050004][ T25] __warn.cold+0x35/0x44 [ 86.054288][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 86.060175][ T25] report_bug+0x1bd/0x210 [ 86.064746][ T25] handle_bug+0x3c/0x60 [ 86.068942][ T25] exc_invalid_op+0x14/0x40 [ 86.073481][ T25] asm_exc_invalid_op+0x12/0x20 [ 86.078486][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 86.084824][ 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 0b 6e 8a e8 c0 39 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 27 2a fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 86.105146][ T25] RSP: 0018:ffffc90000e17bc0 EFLAGS: 00010286 [ 86.111305][ T25] RAX: 0000000000000000 RBX: ffff888147c93e00 RCX: 0000000000000000 [ 86.119458][ T25] RDX: ffff8880161ae2c0 RSI: ffffffff815be065 RDI: fffff520001c2f6a [ 86.127524][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 86.135488][ T25] R10: ffffffff815b7e9e R11: 0000000000000000 R12: ffff8880229f4f60 [ 86.143536][ T25] R13: 0000000000000000 R14: ffff88801f8d3d80 R15: 0000000000000001 [ 86.151676][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 86.156972][ T25] ? vprintk+0x95/0x260 [ 86.161159][ T25] nf_unregister_net_hooks+0x117/0x160 [ 86.166833][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 86.172841][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 86.178383][ T25] cleanup_net+0x451/0xb10 [ 86.182799][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 86.188181][ T25] process_one_work+0x98d/0x1600 [ 86.193288][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 86.198747][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 86.203779][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 86.209073][ T25] worker_thread+0x64c/0x1120 [ 86.213753][ T25] ? process_one_work+0x1600/0x1600 [ 86.218944][ T25] kthread+0x3b1/0x4a0 [ 86.223006][ T25] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 86.228900][ T25] ret_from_fork+0x1f/0x30 [ 86.233558][ T25] Kernel Offset: disabled [ 86.238123][ T25] Rebooting in 86400 seconds..