[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 '10.128.0.80' (ECDSA) to the list of known hosts. 2021/01/22 12:04:33 fuzzer started 2021/01/22 12:04:33 connecting to host at 10.128.0.26:45279 2021/01/22 12:04:33 checking machine... 2021/01/22 12:04:33 checking revisions... 2021/01/22 12:04:33 testing simple program... syzkaller login: [ 72.327077][ T8465] IPVS: ftp: loaded support on port[0] = 21 [ 72.532276][ T8465] chnl_net:caif_netlink_parms(): no params data found [ 72.603899][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.611520][ T8465] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.620444][ T8465] device bridge_slave_0 entered promiscuous mode [ 72.632803][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.640855][ T8465] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.652302][ T8465] device bridge_slave_1 entered promiscuous mode [ 72.674353][ T8465] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.686107][ T8465] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.711653][ T8465] team0: Port device team_slave_0 added [ 72.720063][ T8465] team0: Port device team_slave_1 added [ 72.742144][ T8465] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.749479][ T8465] 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. [ 72.778526][ T8465] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.794005][ T8465] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.801734][ T8465] 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. [ 72.829542][ T8465] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.858419][ T8465] device hsr_slave_0 entered promiscuous mode [ 72.865916][ T8465] device hsr_slave_1 entered promiscuous mode [ 72.979750][ T8465] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.993882][ T8465] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.004904][ T8465] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.014879][ T8465] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.045127][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.052915][ T8465] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.061197][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.068577][ T8465] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.118197][ T8465] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.133406][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.145635][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.155416][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.165263][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.180283][ T8465] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.193143][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.202940][ T3187] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.210392][ T3187] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.232169][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.241222][ T3187] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.248540][ T3187] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.264223][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.273144][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.289383][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.308524][ T8465] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.320986][ T8465] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.334863][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.345314][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.355173][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.379390][ T8465] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.388502][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.398614][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.421769][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.443580][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.454313][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.463998][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.475722][ T8465] device veth0_vlan entered promiscuous mode [ 73.488666][ T8465] device veth1_vlan entered promiscuous mode [ 73.516720][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.526949][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.539351][ T8465] device veth0_macvtap entered promiscuous mode [ 73.551311][ T8465] device veth1_macvtap entered promiscuous mode [ 73.570549][ T8465] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.580324][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.589115][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.597922][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.607475][ T3187] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.622258][ T8465] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.629662][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.639241][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.654185][ T8465] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.664830][ T8465] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.676150][ T8465] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.686699][ T8465] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 73.787990][ T190] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.796452][ T190] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.826184][ T8684] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.840143][ T190] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.853338][ T190] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.863561][ T8684] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/01/22 12:04:37 building call list... [ 74.734848][ T190] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.989084][ T190] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.194544][ T190] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.432639][ T190] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 77.399433][ T8448] can: request_module (can-proto-0) failed. [ 78.068378][ T190] device hsr_slave_0 left promiscuous mode [ 78.075258][ T190] device hsr_slave_1 left promiscuous mode [ 78.084520][ T190] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.092770][ T190] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.103742][ T190] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.111689][ T190] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.120700][ T190] device bridge_slave_1 left promiscuous mode [ 78.128464][ T190] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.141416][ T190] device bridge_slave_0 left promiscuous mode [ 78.148124][ T190] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.165174][ T190] device veth1_macvtap left promiscuous mode [ 78.171734][ T190] device veth0_macvtap left promiscuous mode [ 78.178316][ T190] device veth1_vlan left promiscuous mode [ 78.186290][ T190] device veth0_vlan left promiscuous mode executing program [ 81.879540][ T190] ------------[ cut here ]------------ [ 81.886368][ T190] WARNING: CPU: 1 PID: 190 at net/wireless/core.c:1455 cfg80211_netdev_notifier_call+0xd48/0x1460 [ 81.898151][ T190] Modules linked in: [ 81.902499][ T190] CPU: 1 PID: 190 Comm: kworker/u4:4 Not tainted 5.11.0-rc4-next-20210122-syzkaller #0 [ 81.914428][ T190] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.925490][ T190] Workqueue: netns cleanup_net [ 81.931469][ T190] RIP: 0010:cfg80211_netdev_notifier_call+0xd48/0x1460 [ 81.938853][ T190] 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 [ 81.962401][ T190] RSP: 0018:ffffc9000127f720 EFLAGS: 00010293 [ 81.969094][ T190] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.977894][ T190] RDX: ffff888011873800 RSI: ffffffff883638b8 RDI: 0000000000000003 [ 81.986854][ T190] RBP: ffff88802b700000 R08: 0000000000000000 R09: ffffffff88362ccd [ 81.995717][ T190] R10: ffffffff883638ab R11: 0000000000000006 R12: 1ffff9200024fee9 [ 82.004844][ T190] R13: ffff88801b512580 R14: ffff88801b182000 R15: 0000000000000002 [ 82.013265][ T190] FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 82.022513][ T190] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.029571][ T190] CR2: 0000000000c6137c CR3: 000000000b08e000 CR4: 00000000001506f0 [ 82.037879][ T190] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.046518][ T190] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.054770][ T190] Call Trace: [ 82.058067][ T190] ? mark_lock+0xef/0x17b0 [ 82.062687][ T190] ? cfg80211_register_wdev+0x320/0x320 [ 82.068478][ T190] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 82.074680][ T190] ? lock_chain_count+0x20/0x20 [ 82.079716][ T190] ? find_held_lock+0x2d/0x110 [ 82.084714][ T190] ? rt_flush_dev+0x1c9/0x260 [ 82.089989][ T190] ? mark_held_locks+0x9f/0xe0 [ 82.094877][ T190] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 82.100893][ T190] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 82.106825][ T190] ? cpumask_next+0x3c/0x40 [ 82.111974][ T190] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 82.118084][ T190] ? rt_flush_dev+0x88/0x260 [ 82.123185][ T190] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 82.129663][ T190] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 82.136214][ T190] ? ipmr_device_event+0x1ab/0x220 [ 82.141707][ T190] notifier_call_chain+0xb5/0x200 [ 82.146789][ T190] call_netdevice_notifiers_info+0xb5/0x130 [ 82.153127][ T190] unregister_netdevice_many+0x943/0x1750 [ 82.159241][ T190] ? net_tx_action+0xbf0/0xbf0 [ 82.164487][ T190] ? unregister_netdevice_many+0x1750/0x1750 [ 82.170891][ T190] ? sysfs_remove_group+0xc2/0x170 [ 82.176803][ T190] ? br_dev_delete+0x112/0x190 [ 82.182042][ T190] default_device_exit_batch+0x2fa/0x3c0 [ 82.188222][ T190] ? unregister_netdev+0x20/0x20 [ 82.193597][ T190] ? __init_waitqueue_head+0xd0/0xd0 [ 82.199016][ T190] ? cfg802154_switch_netns+0x440/0x440 [ 82.205409][ T190] ? unregister_netdev+0x20/0x20 [ 82.211242][ T190] ? dev_change_net_namespace+0x1200/0x1200 [ 82.217272][ T190] ops_exit_list+0x10d/0x160 [ 82.222273][ T190] cleanup_net+0x4ea/0xb10 [ 82.226982][ T190] ? ops_free_list.part.0+0x3d0/0x3d0 [ 82.232702][ T190] process_one_work+0x98d/0x15f0 [ 82.237966][ T190] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.243704][ T190] ? rwlock_bug.part.0+0x90/0x90 [ 82.248789][ T190] ? _raw_spin_lock_irq+0x41/0x50 [ 82.254026][ T190] worker_thread+0x64c/0x1120 [ 82.259141][ T190] ? process_one_work+0x15f0/0x15f0 [ 82.264668][ T190] kthread+0x3b1/0x4a0 [ 82.268975][ T190] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 82.275419][ T190] ret_from_fork+0x1f/0x30 [ 82.280296][ T190] Kernel panic - not syncing: panic_on_warn set ... [ 82.287079][ T190] CPU: 0 PID: 190 Comm: kworker/u4:4 Not tainted 5.11.0-rc4-next-20210122-syzkaller #0 [ 82.297709][ T190] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.308569][ T190] Workqueue: netns cleanup_net [ 82.313556][ T190] Call Trace: [ 82.316971][ T190] dump_stack+0x107/0x163 [ 82.321744][ T190] panic+0x306/0x73d [ 82.326184][ T190] ? __warn_printk+0xf3/0xf3 [ 82.331981][ T190] ? __warn.cold+0x1a/0x44 [ 82.336780][ T190] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 82.343294][ T190] __warn.cold+0x35/0x44 [ 82.347637][ T190] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 82.353984][ T190] report_bug+0x1bd/0x210 [ 82.358458][ T190] handle_bug+0x3c/0x60 [ 82.362722][ T190] exc_invalid_op+0x14/0x40 [ 82.367353][ T190] asm_exc_invalid_op+0x12/0x20 [ 82.372792][ T190] RIP: 0010:cfg80211_netdev_notifier_call+0xd48/0x1460 [ 82.380073][ T190] 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 [ 82.400338][ T190] RSP: 0018:ffffc9000127f720 EFLAGS: 00010293 [ 82.406501][ T190] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 82.415068][ T190] RDX: ffff888011873800 RSI: ffffffff883638b8 RDI: 0000000000000003 [ 82.423567][ T190] RBP: ffff88802b700000 R08: 0000000000000000 R09: ffffffff88362ccd [ 82.432316][ T190] R10: ffffffff883638ab R11: 0000000000000006 R12: 1ffff9200024fee9 [ 82.440747][ T190] R13: ffff88801b512580 R14: ffff88801b182000 R15: 0000000000000002 [ 82.449058][ T190] ? cfg80211_netdev_notifier_call+0xd3b/0x1460 [ 82.455348][ T190] ? cfg80211_netdev_notifier_call+0x15d/0x1460 [ 82.461608][ T190] ? cfg80211_netdev_notifier_call+0xd48/0x1460 [ 82.468177][ T190] ? mark_lock+0xef/0x17b0 [ 82.472610][ T190] ? cfg80211_register_wdev+0x320/0x320 [ 82.478243][ T190] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 82.484689][ T190] ? lock_chain_count+0x20/0x20 [ 82.489645][ T190] ? find_held_lock+0x2d/0x110 [ 82.494681][ T190] ? rt_flush_dev+0x1c9/0x260 [ 82.499459][ T190] ? mark_held_locks+0x9f/0xe0 [ 82.504574][ T190] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 82.510396][ T190] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 82.516407][ T190] ? cpumask_next+0x3c/0x40 [ 82.520934][ T190] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 82.527604][ T190] ? rt_flush_dev+0x88/0x260 [ 82.532667][ T190] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 82.539094][ T190] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 82.545714][ T190] ? ipmr_device_event+0x1ab/0x220 [ 82.551059][ T190] notifier_call_chain+0xb5/0x200 [ 82.556464][ T190] call_netdevice_notifiers_info+0xb5/0x130 [ 82.562797][ T190] unregister_netdevice_many+0x943/0x1750 [ 82.568964][ T190] ? net_tx_action+0xbf0/0xbf0 [ 82.573840][ T190] ? unregister_netdevice_many+0x1750/0x1750 [ 82.579926][ T190] ? sysfs_remove_group+0xc2/0x170 [ 82.585136][ T190] ? br_dev_delete+0x112/0x190 [ 82.590126][ T190] default_device_exit_batch+0x2fa/0x3c0 [ 82.596370][ T190] ? unregister_netdev+0x20/0x20 [ 82.601497][ T190] ? __init_waitqueue_head+0xd0/0xd0 [ 82.607079][ T190] ? cfg802154_switch_netns+0x440/0x440 [ 82.612917][ T190] ? unregister_netdev+0x20/0x20 [ 82.618224][ T190] ? dev_change_net_namespace+0x1200/0x1200 [ 82.624237][ T190] ops_exit_list+0x10d/0x160 [ 82.629349][ T190] cleanup_net+0x4ea/0xb10 [ 82.634075][ T190] ? ops_free_list.part.0+0x3d0/0x3d0 [ 82.640051][ T190] process_one_work+0x98d/0x15f0 [ 82.645316][ T190] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.651343][ T190] ? rwlock_bug.part.0+0x90/0x90 [ 82.656645][ T190] ? _raw_spin_lock_irq+0x41/0x50 [ 82.661965][ T190] worker_thread+0x64c/0x1120 [ 82.666999][ T190] ? process_one_work+0x15f0/0x15f0 [ 82.672316][ T190] kthread+0x3b1/0x4a0 [ 82.676608][ T190] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 82.683054][ T190] ret_from_fork+0x1f/0x30 [ 82.689654][ T190] Kernel Offset: disabled [ 82.694229][ T190] Rebooting in 86400 seconds..