[ 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 tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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. Warning: Permanently added '10.128.1.75' (ECDSA) to the list of known hosts. 2021/05/04 06:26:11 fuzzer started Debian GNU/Linux 9 syzkaller ttyS0 2021/05/04 06:26:11 connecting to host at 10.128.0.169:41469 2021/05/04 06:26:11 checking machine... 2021/05/04 06:26:11 checking revisions... 2021/05/04 06:26:11 testing simple program... syzkaller login: [ 77.226063][ T37] audit: type=1400 audit(1620109572.079:8): avc: denied { execmem } for pid=8403 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 78.603218][ T8404] chnl_net:caif_netlink_parms(): no params data found [ 78.662574][ T8404] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.670793][ T8404] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.679927][ T8404] device bridge_slave_0 entered promiscuous mode [ 78.690004][ T8404] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.697188][ T8404] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.706040][ T8404] device bridge_slave_1 entered promiscuous mode [ 78.729608][ T8404] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.741116][ T8404] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.766655][ T8404] team0: Port device team_slave_0 added [ 78.774489][ T8404] team0: Port device team_slave_1 added [ 78.793494][ T8404] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.800834][ T8404] 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. [ 78.828192][ T8404] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.841775][ T8404] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.849247][ T8404] 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. [ 78.875436][ T8404] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.904013][ T8404] device hsr_slave_0 entered promiscuous mode [ 78.911089][ T8404] device hsr_slave_1 entered promiscuous mode [ 79.022969][ T8404] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 79.033794][ T8404] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 79.045637][ T8404] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 79.057355][ T8404] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.086709][ T8404] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.093984][ T8404] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.102038][ T8404] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.109570][ T8404] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.157422][ T8404] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.172239][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.184936][ T4824] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.194550][ T4824] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.203283][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 79.217803][ T8404] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.230043][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.238854][ T2934] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.245908][ T2934] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.268492][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.276907][ T2934] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.284732][ T2934] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.298204][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.308606][ T8624] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.320818][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.334297][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.347873][ T8404] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 79.360197][ T8404] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.370606][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.388211][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.395676][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.410989][ T8404] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.430594][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.455136][ T8404] device veth0_vlan entered promiscuous mode [ 79.462823][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.472440][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.481716][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.494296][ T8404] device veth1_vlan entered promiscuous mode [ 79.502501][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.526656][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.535519][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.548829][ T8404] device veth0_macvtap entered promiscuous mode [ 79.560781][ T8404] device veth1_macvtap entered promiscuous mode [ 79.580835][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.591322][ T8404] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.601185][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.609899][ T4824] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.622349][ T8404] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.630582][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.641388][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.653935][ T8404] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.663368][ T8404] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.672696][ T8404] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.682556][ T8404] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.784331][ T158] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.792541][ T158] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.824421][ T8625] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 79.852512][ T158] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.861307][ T158] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.872521][ T2934] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/04 06:26:14 building call list... [ 80.563485][ T158] ------------[ cut here ]------------ [ 80.569758][ T158] hook not found, pf 3 num 0 [ 80.578250][ T158] WARNING: CPU: 0 PID: 158 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 80.594126][ T158] Modules linked in: [ 80.599938][ T158] CPU: 0 PID: 158 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 80.609354][ T158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.621599][ T158] Workqueue: netns cleanup_net [ 80.626410][ T158] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 80.633824][ T158] 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 97 6d 8a e8 70 36 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 32 2d fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 80.657744][ T158] RSP: 0018:ffffc90000ea7bc0 EFLAGS: 00010286 [ 80.663934][ T158] RAX: 0000000000000000 RBX: ffff8880271db500 RCX: 0000000000000000 [ 80.674462][ T158] RDX: ffff888012f68300 RSI: ffffffff815bdf85 RDI: fffff520001d4f6a [ 80.683646][ T158] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 80.693753][ T158] R10: ffffffff815b7dbe R11: 0000000000000000 R12: ffff88802b022f60 [ 80.702945][ T158] R13: 0000000000000000 R14: ffff888014ab3600 R15: 0000000000000001 [ 80.722479][ T158] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 80.733882][ T158] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.741456][ T158] CR2: 00007f7580170000 CR3: 00000000189b3000 CR4: 00000000001506e0 [ 80.751771][ T158] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.760942][ T158] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.771570][ T158] Call Trace: [ 80.774875][ T158] nf_unregister_net_hooks+0x117/0x160 [ 80.781700][ T158] arpt_unregister_table_pre_exit+0x67/0x80 [ 80.791222][ T158] ? arptable_filter_net_exit+0x20/0x20 [ 80.796934][ T158] cleanup_net+0x451/0xb10 [ 80.802925][ T158] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.810710][ T158] process_one_work+0x98d/0x1600 [ 80.816166][ T158] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.822892][ T158] ? rwlock_bug.part.0+0x90/0x90 [ 80.830904][ T158] ? _raw_spin_lock_irq+0x41/0x50 [ 80.836000][ T158] worker_thread+0x64c/0x1120 [ 80.842080][ T158] ? process_one_work+0x1600/0x1600 [ 80.847357][ T158] kthread+0x3b1/0x4a0 [ 80.854322][ T158] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 80.861143][ T158] ret_from_fork+0x1f/0x30 [ 80.865596][ T158] Kernel panic - not syncing: panic_on_warn set ... [ 80.872184][ T158] CPU: 0 PID: 158 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 80.880363][ T158] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.890436][ T158] Workqueue: netns cleanup_net [ 80.895220][ T158] Call Trace: [ 80.898544][ T158] dump_stack+0x141/0x1d7 [ 80.902884][ T158] panic+0x306/0x73d [ 80.906787][ T158] ? __warn_printk+0xf3/0xf3 [ 80.911387][ T158] ? __warn.cold+0x1a/0x44 [ 80.915820][ T158] ? __nf_unregister_net_hook+0x1eb/0x610 [ 80.921565][ T158] __warn.cold+0x35/0x44 [ 80.925998][ T158] ? __nf_unregister_net_hook+0x1eb/0x610 [ 80.931916][ T158] report_bug+0x1bd/0x210 [ 80.936458][ T158] handle_bug+0x3c/0x60 [ 80.940624][ T158] exc_invalid_op+0x14/0x40 [ 80.945140][ T158] asm_exc_invalid_op+0x12/0x20 [ 80.950094][ T158] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 80.956446][ T158] 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 97 6d 8a e8 70 36 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 32 2d fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 80.976242][ T158] RSP: 0018:ffffc90000ea7bc0 EFLAGS: 00010286 [ 80.982325][ T158] RAX: 0000000000000000 RBX: ffff8880271db500 RCX: 0000000000000000 [ 80.990398][ T158] RDX: ffff888012f68300 RSI: ffffffff815bdf85 RDI: fffff520001d4f6a [ 80.998420][ T158] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 81.006405][ T158] R10: ffffffff815b7dbe R11: 0000000000000000 R12: ffff88802b022f60 [ 81.014391][ T158] R13: 0000000000000000 R14: ffff888014ab3600 R15: 0000000000000001 [ 81.022720][ T158] ? wake_up_klogd.part.0+0x8e/0xd0 [ 81.027940][ T158] ? vprintk+0x95/0x260 [ 81.032156][ T158] nf_unregister_net_hooks+0x117/0x160 [ 81.037671][ T158] arpt_unregister_table_pre_exit+0x67/0x80 [ 81.043604][ T158] ? arptable_filter_net_exit+0x20/0x20 [ 81.049170][ T158] cleanup_net+0x451/0xb10 [ 81.053600][ T158] ? ops_free_list.part.0+0x3d0/0x3d0 [ 81.058987][ T158] process_one_work+0x98d/0x1600 [ 81.063948][ T158] ? pwq_dec_nr_in_flight+0x320/0x320 [ 81.069345][ T158] ? rwlock_bug.part.0+0x90/0x90 [ 81.074301][ T158] ? _raw_spin_lock_irq+0x41/0x50 [ 81.079365][ T158] worker_thread+0x64c/0x1120 [ 81.084232][ T158] ? process_one_work+0x1600/0x1600 [ 81.089443][ T158] kthread+0x3b1/0x4a0 [ 81.093537][ T158] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 81.099441][ T158] ret_from_fork+0x1f/0x30 [ 81.105224][ T158] Kernel Offset: disabled [ 81.109798][ T158] Rebooting in 86400 seconds..