[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.22' (ECDSA) to the list of known hosts. 2021/01/22 12:04:32 fuzzer started 2021/01/22 12:04:32 connecting to host at 10.128.0.26:35041 2021/01/22 12:04:32 checking machine... 2021/01/22 12:04:32 checking revisions... 2021/01/22 12:04:32 testing simple program... syzkaller login: [ 70.853454][ T8466] IPVS: ftp: loaded support on port[0] = 21 [ 71.012960][ T8466] chnl_net:caif_netlink_parms(): no params data found [ 71.068262][ T8466] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.077579][ T8466] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.085413][ T8466] device bridge_slave_0 entered promiscuous mode [ 71.095370][ T8466] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.103325][ T8466] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.111801][ T8466] device bridge_slave_1 entered promiscuous mode [ 71.133289][ T8466] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.144596][ T8466] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.169261][ T8466] team0: Port device team_slave_0 added [ 71.177433][ T8466] team0: Port device team_slave_1 added [ 71.195590][ T8466] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.203442][ T8466] 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. [ 71.230040][ T8466] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.243374][ T8466] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.251605][ T8466] 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. [ 71.278421][ T8466] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.306526][ T8466] device hsr_slave_0 entered promiscuous mode [ 71.313175][ T8466] device hsr_slave_1 entered promiscuous mode [ 71.422292][ T8466] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.433279][ T8466] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.443509][ T8466] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.453670][ T8466] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.480407][ T8466] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.487625][ T8466] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.495780][ T8466] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.502877][ T8466] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.550914][ T8466] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.564421][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.576296][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.584618][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.594808][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.609373][ T8466] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.620177][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.630110][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.637218][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.649937][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.659099][ T20] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.666235][ T20] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.688327][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.697738][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.709012][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.722190][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.736662][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.748484][ T8466] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.767219][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.774832][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.789630][ T8466] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.816969][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.832236][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.843120][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.851796][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.860467][ T8466] device veth0_vlan entered promiscuous mode [ 71.874769][ T8466] device veth1_vlan entered promiscuous mode [ 71.896837][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.904765][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.914646][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.928774][ T8466] device veth0_macvtap entered promiscuous mode [ 71.939278][ T8466] device veth1_macvtap entered promiscuous mode [ 71.958464][ T8466] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.966133][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.975486][ T4012] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.988626][ T8466] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.997484][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.011164][ T8466] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.020993][ T8466] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.030249][ T8466] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.039829][ T8466] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.124169][ T196] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.155835][ T196] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.165924][ T32] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.200591][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.208754][ T25] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.220150][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/01/22 12:04:35 building call list... executing program [ 73.044642][ T25] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.341050][ T25] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.550965][ T25] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.797762][ T25] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 75.813258][ T8452] can: request_module (can-proto-0) failed. [ 76.451108][ T25] device hsr_slave_0 left promiscuous mode [ 76.458279][ T25] device hsr_slave_1 left promiscuous mode [ 76.466007][ T25] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.473582][ T25] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.483563][ T25] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.491728][ T25] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.501553][ T25] device bridge_slave_1 left promiscuous mode [ 76.508876][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.521631][ T25] device bridge_slave_0 left promiscuous mode [ 76.527945][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.545136][ T25] device veth1_macvtap left promiscuous mode [ 76.551934][ T25] device veth0_macvtap left promiscuous mode [ 76.559337][ T25] device veth1_vlan left promiscuous mode [ 76.565298][ T25] device veth0_vlan left promiscuous mode executing program [ 80.217690][ T25] ------------[ cut here ]------------ [ 80.223568][ T25] WARNING: CPU: 0 PID: 25 at net/wireless/core.c:1455 cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.235437][ T25] Modules linked in: [ 80.239469][ T25] CPU: 1 PID: 25 Comm: kworker/u4:1 Not tainted 5.11.0-rc4-next-20210122-syzkaller #0 [ 80.250391][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.261359][ T25] Workqueue: netns cleanup_net [ 80.267036][ T25] RIP: 0010:cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.273967][ T25] Code: ce e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 b0 cd c6 00 31 ff 89 c3 89 c6 e8 35 ec 3c f9 85 db 0f 85 64 f9 ff ff e8 a8 e4 3c f9 <0f> 0b e9 58 f9 ff ff e8 9c e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 [ 80.294224][ T25] RSP: 0018:ffffc90000dff720 EFLAGS: 00010293 [ 80.300517][ T25] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 80.308881][ T25] RDX: ffff888010f53800 RSI: ffffffff883638b8 RDI: 0000000000000003 [ 80.317287][ T25] RBP: ffff888035752000 R08: 0000000000000000 R09: ffffffff88362ccd [ 80.325546][ T25] R10: ffffffff883638ab R11: 0000000000000006 R12: 1ffff920001bfee9 [ 80.333578][ T25] R13: ffff88801ac38580 R14: ffff88803575e000 R15: 0000000000000002 [ 80.341723][ T25] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 80.350793][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.357526][ T25] CR2: 00007f6cc1d2c018 CR3: 0000000020718000 CR4: 00000000001506f0 [ 80.365751][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.373746][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.381796][ T25] Call Trace: [ 80.385078][ T25] ? mark_lock+0xef/0x17b0 [ 80.389599][ T25] ? cfg80211_register_wdev+0x320/0x320 [ 80.395161][ T25] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 80.401209][ T25] ? lock_chain_count+0x20/0x20 [ 80.406400][ T25] ? find_held_lock+0x2d/0x110 [ 80.411173][ T25] ? rt_flush_dev+0x1c9/0x260 [ 80.415952][ T25] ? mark_held_locks+0x9f/0xe0 [ 80.420742][ T25] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 80.426744][ T25] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 80.432662][ T25] ? cpumask_next+0x3c/0x40 [ 80.437258][ T25] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 80.442993][ T25] ? rt_flush_dev+0x88/0x260 [ 80.447696][ T25] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 80.453963][ T25] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 80.460292][ T25] ? ipmr_device_event+0x1ab/0x220 [ 80.465542][ T25] notifier_call_chain+0xb5/0x200 [ 80.470570][ T25] call_netdevice_notifiers_info+0xb5/0x130 [ 80.476547][ T25] unregister_netdevice_many+0x943/0x1750 [ 80.482322][ T25] ? net_tx_action+0xbf0/0xbf0 [ 80.487171][ T25] ? unregister_netdevice_many+0x1750/0x1750 [ 80.493170][ T25] ? sysfs_remove_group+0xc2/0x170 [ 80.498429][ T25] ? br_dev_delete+0x112/0x190 [ 80.503244][ T25] default_device_exit_batch+0x2fa/0x3c0 [ 80.509071][ T25] ? unregister_netdev+0x20/0x20 [ 80.514044][ T25] ? __init_waitqueue_head+0xd0/0xd0 [ 80.519496][ T25] ? cfg802154_switch_netns+0x440/0x440 [ 80.525066][ T25] ? unregister_netdev+0x20/0x20 [ 80.530119][ T25] ? dev_change_net_namespace+0x1200/0x1200 [ 80.536340][ T25] ops_exit_list+0x10d/0x160 [ 80.540959][ T25] cleanup_net+0x4ea/0xb10 [ 80.545535][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.550976][ T25] process_one_work+0x98d/0x15f0 [ 80.556249][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.561660][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 80.566871][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 80.571932][ T25] worker_thread+0x64c/0x1120 [ 80.577029][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 80.582074][ T25] ? process_one_work+0x15f0/0x15f0 [ 80.587370][ T25] kthread+0x3b1/0x4a0 [ 80.591485][ T25] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 80.597480][ T25] ret_from_fork+0x1f/0x30 [ 80.601925][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 80.608579][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.11.0-rc4-next-20210122-syzkaller #0 [ 80.618103][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.628145][ T25] Workqueue: netns cleanup_net [ 80.632989][ T25] Call Trace: [ 80.636267][ T25] dump_stack+0x107/0x163 [ 80.640589][ T25] panic+0x306/0x73d [ 80.644475][ T25] ? __warn_printk+0xf3/0xf3 [ 80.649059][ T25] ? __warn.cold+0x1a/0x44 [ 80.653488][ T25] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.659719][ T25] __warn.cold+0x35/0x44 [ 80.663951][ T25] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.670180][ T25] report_bug+0x1bd/0x210 [ 80.674500][ T25] handle_bug+0x3c/0x60 [ 80.678756][ T25] exc_invalid_op+0x14/0x40 [ 80.683594][ T25] asm_exc_invalid_op+0x12/0x20 [ 80.688437][ T25] RIP: 0010:cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.695294][ T25] Code: ce e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 b0 cd c6 00 31 ff 89 c3 89 c6 e8 35 ec 3c f9 85 db 0f 85 64 f9 ff ff e8 a8 e4 3c f9 <0f> 0b e9 58 f9 ff ff e8 9c e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 [ 80.714908][ T25] RSP: 0018:ffffc90000dff720 EFLAGS: 00010293 [ 80.720968][ T25] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 80.729033][ T25] RDX: ffff888010f53800 RSI: ffffffff883638b8 RDI: 0000000000000003 [ 80.736992][ T25] RBP: ffff888035752000 R08: 0000000000000000 R09: ffffffff88362ccd [ 80.745054][ T25] R10: ffffffff883638ab R11: 0000000000000006 R12: 1ffff920001bfee9 [ 80.753358][ T25] R13: ffff88801ac38580 R14: ffff88803575e000 R15: 0000000000000002 [ 80.761332][ T25] ? cfg80211_netdev_notifier_call+0xd3b/0x1460 [ 80.767564][ T25] ? cfg80211_netdev_notifier_call+0x15d/0x1460 [ 80.773820][ T25] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.780062][ T25] ? mark_lock+0xef/0x17b0 [ 80.784477][ T25] ? cfg80211_register_wdev+0x320/0x320 [ 80.790019][ T25] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 80.795988][ T25] ? lock_chain_count+0x20/0x20 [ 80.800842][ T25] ? find_held_lock+0x2d/0x110 [ 80.805596][ T25] ? rt_flush_dev+0x1c9/0x260 [ 80.810260][ T25] ? mark_held_locks+0x9f/0xe0 [ 80.815008][ T25] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 80.820712][ T25] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 80.826616][ T25] ? cpumask_next+0x3c/0x40 [ 80.831457][ T25] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 80.837164][ T25] ? rt_flush_dev+0x88/0x260 [ 80.841758][ T25] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 80.847988][ T25] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 80.854215][ T25] ? ipmr_device_event+0x1ab/0x220 [ 80.859319][ T25] notifier_call_chain+0xb5/0x200 [ 80.864336][ T25] call_netdevice_notifiers_info+0xb5/0x130 [ 80.870413][ T25] unregister_netdevice_many+0x943/0x1750 [ 80.876126][ T25] ? net_tx_action+0xbf0/0xbf0 [ 80.880876][ T25] ? unregister_netdevice_many+0x1750/0x1750 [ 80.886856][ T25] ? sysfs_remove_group+0xc2/0x170 [ 80.891959][ T25] ? br_dev_delete+0x112/0x190 [ 80.896784][ T25] default_device_exit_batch+0x2fa/0x3c0 [ 80.902423][ T25] ? unregister_netdev+0x20/0x20 [ 80.907362][ T25] ? __init_waitqueue_head+0xd0/0xd0 [ 80.912811][ T25] ? cfg802154_switch_netns+0x440/0x440 [ 80.918368][ T25] ? unregister_netdev+0x20/0x20 [ 80.923300][ T25] ? dev_change_net_namespace+0x1200/0x1200 [ 80.929210][ T25] ops_exit_list+0x10d/0x160 [ 80.933810][ T25] cleanup_net+0x4ea/0xb10 [ 80.938226][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.943606][ T25] process_one_work+0x98d/0x15f0 [ 80.948545][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.954014][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 80.958943][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 80.963964][ T25] worker_thread+0x64c/0x1120 [ 80.968635][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 80.973650][ T25] ? process_one_work+0x15f0/0x15f0 [ 80.978843][ T25] kthread+0x3b1/0x4a0 [ 80.982992][ T25] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 80.989437][ T25] ret_from_fork+0x1f/0x30 [ 80.995045][ T25] Kernel Offset: disabled [ 80.999536][ T25] Rebooting in 86400 seconds..