[ 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 '10.128.0.236' (ECDSA) to the list of known hosts. 2021/01/23 07:31:36 fuzzer started 2021/01/23 07:31:36 connecting to host at 10.128.0.26:35985 2021/01/23 07:31:36 checking machine... 2021/01/23 07:31:36 checking revisions... 2021/01/23 07:31:36 testing simple program... syzkaller login: [ 70.864020][ T8447] IPVS: ftp: loaded support on port[0] = 21 [ 71.054394][ T8447] chnl_net:caif_netlink_parms(): no params data found [ 71.107322][ T8447] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.116032][ T8447] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.125216][ T8447] device bridge_slave_0 entered promiscuous mode [ 71.134863][ T8447] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.142217][ T8447] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.149934][ T8447] device bridge_slave_1 entered promiscuous mode [ 71.171268][ T8447] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.183943][ T8447] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.207736][ T8447] team0: Port device team_slave_0 added [ 71.215438][ T8447] team0: Port device team_slave_1 added [ 71.233971][ T8447] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.241270][ T8447] 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. [ 71.268128][ T8447] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.282265][ T8447] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.289434][ T8447] 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. [ 71.315710][ T8447] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.344523][ T8447] device hsr_slave_0 entered promiscuous mode [ 71.351638][ T8447] device hsr_slave_1 entered promiscuous mode [ 71.461198][ T8447] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.472560][ T8447] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.483630][ T8447] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.493494][ T8447] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.520825][ T8447] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.528275][ T8447] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.536474][ T8447] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.544082][ T8447] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.593656][ T8447] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.608480][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.619688][ T2975] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.629218][ T2975] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.638424][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.652242][ T8447] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.665897][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.674733][ T2975] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.682027][ T2975] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.693922][ T4200] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.703365][ T4200] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.710655][ T4200] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.731168][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.753485][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.763262][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.773750][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.782849][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.794174][ T8447] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.815491][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.823177][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.839314][ T8447] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.859013][ T4200] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.882372][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.891885][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.900104][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.913231][ T8447] device veth0_vlan entered promiscuous mode [ 71.926250][ T8447] device veth1_vlan entered promiscuous mode [ 71.948086][ T4200] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.957286][ T4200] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.966167][ T4200] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.978836][ T8447] device veth0_macvtap entered promiscuous mode [ 71.990116][ T8447] device veth1_macvtap entered promiscuous mode [ 72.010753][ T8447] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.018306][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.029863][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.043554][ T8447] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.051142][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.059773][ T2975] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.074476][ T8447] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.084210][ T8447] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.094341][ T8447] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.104031][ T8447] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.187136][ T24] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.203338][ T24] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.236997][ T3188] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.257813][ T205] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.267372][ T205] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.283809][ T4200] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/01/23 07:31:39 building call list... executing program [ 73.147063][ T24] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.407333][ T24] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.602547][ T24] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.827243][ T24] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 76.054744][ T8432] can: request_module (can-proto-0) failed. [ 76.422135][ T24] device hsr_slave_0 left promiscuous mode [ 76.429235][ T24] device hsr_slave_1 left promiscuous mode [ 76.437323][ T24] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 76.445613][ T24] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 76.455619][ T24] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 76.464451][ T24] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 76.474201][ T24] device bridge_slave_1 left promiscuous mode [ 76.481701][ T24] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.495555][ T24] device bridge_slave_0 left promiscuous mode [ 76.502107][ T24] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.518479][ T24] device veth1_macvtap left promiscuous mode [ 76.525094][ T24] device veth0_macvtap left promiscuous mode [ 76.531971][ T24] device veth1_vlan left promiscuous mode [ 76.538063][ T24] device veth0_vlan left promiscuous mode executing program [ 80.143135][ T24] ------------[ cut here ]------------ [ 80.149325][ T24] WARNING: CPU: 0 PID: 24 at net/wireless/core.c:1455 cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.161493][ T24] Modules linked in: [ 80.165698][ T24] CPU: 1 PID: 24 Comm: kworker/u4:1 Not tainted 5.11.0-rc4-next-20210122-syzkaller #0 [ 80.175465][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.186717][ T24] Workqueue: netns cleanup_net [ 80.191922][ T24] RIP: 0010:cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.198908][ T24] Code: be e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 a0 cd c6 00 31 ff 89 c3 89 c6 e8 25 ec 3c f9 85 db 0f 85 64 f9 ff ff e8 98 e4 3c f9 <0f> 0b e9 58 f9 ff ff e8 8c e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 [ 80.220783][ T24] RSP: 0018:ffffc90000def720 EFLAGS: 00010293 [ 80.227289][ T24] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 80.236465][ T24] RDX: ffff888010ef3800 RSI: ffffffff883638c8 RDI: 0000000000000003 [ 80.245355][ T24] RBP: ffff888035de2000 R08: 0000000000000000 R09: ffffffff88362cdd [ 80.253773][ T24] R10: ffffffff883638bb R11: 0000000000000006 R12: 1ffff920001bdee9 [ 80.262049][ T24] R13: ffff8881447b2580 R14: ffff888035dea000 R15: 0000000000000002 [ 80.270285][ T24] FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 80.279471][ T24] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.286254][ T24] CR2: 0000000000a9b158 CR3: 0000000017d65000 CR4: 00000000001506e0 [ 80.294492][ T24] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.302815][ T24] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.311005][ T24] Call Trace: [ 80.314516][ T24] ? mark_lock+0xef/0x17b0 [ 80.319169][ T24] ? cfg80211_register_wdev+0x320/0x320 [ 80.324983][ T24] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 80.331225][ T24] ? lock_chain_count+0x20/0x20 [ 80.336096][ T24] ? find_held_lock+0x2d/0x110 [ 80.341009][ T24] ? rt_flush_dev+0x1c9/0x260 [ 80.345900][ T24] ? mark_held_locks+0x9f/0xe0 [ 80.351511][ T24] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 80.357907][ T24] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 80.365699][ T24] ? cpumask_next+0x3c/0x40 [ 80.370403][ T24] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 80.376266][ T24] ? rt_flush_dev+0x88/0x260 [ 80.382066][ T24] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 80.388512][ T24] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 80.394875][ T24] ? ipmr_device_event+0x1ab/0x220 [ 80.400542][ T24] notifier_call_chain+0xb5/0x200 [ 80.405772][ T24] call_netdevice_notifiers_info+0xb5/0x130 [ 80.411966][ T24] unregister_netdevice_many+0x943/0x1750 [ 80.417845][ T24] ? net_tx_action+0xbf0/0xbf0 [ 80.422876][ T24] ? unregister_netdevice_many+0x1750/0x1750 [ 80.428894][ T24] ? sysfs_remove_group+0xc2/0x170 [ 80.434211][ T24] ? br_dev_delete+0x112/0x190 [ 80.439177][ T24] default_device_exit_batch+0x2fa/0x3c0 [ 80.445151][ T24] ? unregister_netdev+0x20/0x20 [ 80.450422][ T24] ? __init_waitqueue_head+0xd0/0xd0 [ 80.455734][ T24] ? cfg802154_switch_netns+0x440/0x440 [ 80.464550][ T24] ? unregister_netdev+0x20/0x20 [ 80.469535][ T24] ? dev_change_net_namespace+0x1200/0x1200 [ 80.476553][ T24] ops_exit_list+0x10d/0x160 [ 80.482589][ T24] cleanup_net+0x4ea/0xb10 [ 80.487084][ T24] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.493461][ T24] process_one_work+0x98d/0x15f0 [ 80.498485][ T24] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.505686][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 80.511515][ T24] ? _raw_spin_lock_irq+0x41/0x50 [ 80.516559][ T24] worker_thread+0x64c/0x1120 [ 80.523019][ T24] ? __kthread_parkme+0x13f/0x1e0 [ 80.528239][ T24] ? process_one_work+0x15f0/0x15f0 [ 80.534447][ T24] kthread+0x3b1/0x4a0 [ 80.538524][ T24] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 80.546207][ T24] ret_from_fork+0x1f/0x30 [ 80.551476][ T24] Kernel panic - not syncing: panic_on_warn set ... [ 80.558056][ T24] CPU: 0 PID: 24 Comm: kworker/u4:1 Not tainted 5.11.0-rc4-next-20210122-syzkaller #0 [ 80.567676][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.577817][ T24] Workqueue: netns cleanup_net [ 80.582664][ T24] Call Trace: [ 80.585940][ T24] dump_stack+0x107/0x163 [ 80.590272][ T24] panic+0x306/0x73d [ 80.594400][ T24] ? __warn_printk+0xf3/0xf3 [ 80.598994][ T24] ? __warn.cold+0x1a/0x44 [ 80.603424][ T24] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.609863][ T24] __warn.cold+0x35/0x44 [ 80.614396][ T24] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.620893][ T24] report_bug+0x1bd/0x210 [ 80.625293][ T24] handle_bug+0x3c/0x60 [ 80.629482][ T24] exc_invalid_op+0x14/0x40 [ 80.634105][ T24] asm_exc_invalid_op+0x12/0x20 [ 80.638962][ T24] RIP: 0010:cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.646098][ T24] Code: be e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 a0 cd c6 00 31 ff 89 c3 89 c6 e8 25 ec 3c f9 85 db 0f 85 64 f9 ff ff e8 98 e4 3c f9 <0f> 0b e9 58 f9 ff ff e8 8c e4 3c f9 49 8d 7d 68 be ff ff ff ff e8 [ 80.665888][ T24] RSP: 0018:ffffc90000def720 EFLAGS: 00010293 [ 80.672057][ T24] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 80.680393][ T24] RDX: ffff888010ef3800 RSI: ffffffff883638c8 RDI: 0000000000000003 [ 80.688355][ T24] RBP: ffff888035de2000 R08: 0000000000000000 R09: ffffffff88362cdd [ 80.696444][ T24] R10: ffffffff883638bb R11: 0000000000000006 R12: 1ffff920001bdee9 [ 80.704441][ T24] R13: ffff8881447b2580 R14: ffff888035dea000 R15: 0000000000000002 [ 80.712414][ T24] ? cfg80211_netdev_notifier_call+0xd3b/0x1460 [ 80.718658][ T24] ? cfg80211_netdev_notifier_call+0x15d/0x1460 [ 80.724897][ T24] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 80.731165][ T24] ? mark_lock+0xef/0x17b0 [ 80.735584][ T24] ? cfg80211_register_wdev+0x320/0x320 [ 80.741155][ T24] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 80.747651][ T24] ? lock_chain_count+0x20/0x20 [ 80.752521][ T24] ? find_held_lock+0x2d/0x110 [ 80.757300][ T24] ? rt_flush_dev+0x1c9/0x260 [ 80.762022][ T24] ? mark_held_locks+0x9f/0xe0 [ 80.767056][ T24] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 80.772865][ T24] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 80.778883][ T24] ? cpumask_next+0x3c/0x40 [ 80.783379][ T24] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 80.789098][ T24] ? rt_flush_dev+0x88/0x260 [ 80.793789][ T24] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 80.800023][ T24] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 80.806255][ T24] ? ipmr_device_event+0x1ab/0x220 [ 80.811361][ T24] notifier_call_chain+0xb5/0x200 [ 80.816556][ T24] call_netdevice_notifiers_info+0xb5/0x130 [ 80.822559][ T24] unregister_netdevice_many+0x943/0x1750 [ 80.828277][ T24] ? net_tx_action+0xbf0/0xbf0 [ 80.833045][ T24] ? unregister_netdevice_many+0x1750/0x1750 [ 80.839023][ T24] ? sysfs_remove_group+0xc2/0x170 [ 80.844144][ T24] ? br_dev_delete+0x112/0x190 [ 80.848906][ T24] default_device_exit_batch+0x2fa/0x3c0 [ 80.854614][ T24] ? unregister_netdev+0x20/0x20 [ 80.859545][ T24] ? __init_waitqueue_head+0xd0/0xd0 [ 80.865021][ T24] ? cfg802154_switch_netns+0x440/0x440 [ 80.870571][ T24] ? unregister_netdev+0x20/0x20 [ 80.875681][ T24] ? dev_change_net_namespace+0x1200/0x1200 [ 80.881650][ T24] ops_exit_list+0x10d/0x160 [ 80.886514][ T24] cleanup_net+0x4ea/0xb10 [ 80.891099][ T24] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.896519][ T24] process_one_work+0x98d/0x15f0 [ 80.901453][ T24] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.906907][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 80.911837][ T24] ? _raw_spin_lock_irq+0x41/0x50 [ 80.916958][ T24] worker_thread+0x64c/0x1120 [ 80.921632][ T24] ? __kthread_parkme+0x13f/0x1e0 [ 80.926654][ T24] ? process_one_work+0x15f0/0x15f0 [ 80.931869][ T24] kthread+0x3b1/0x4a0 [ 80.936015][ T24] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 80.941916][ T24] ret_from_fork+0x1f/0x30 [ 80.948050][ T24] Kernel Offset: disabled [ 80.952611][ T24] Rebooting in 86400 seconds..