[ 19.113217][ T3693] 8021q: adding VLAN 0 to HW filter on device bond0 [ 19.117191][ T3693] eql: remember to turn off Van-Jacobson compression on your slave devices [ 19.160426][ T136] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 19.165105][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts. 1970/01/01 00:00:44 ignoring optional flag "sandboxArg"="0" 1970/01/01 00:00:44 parsed 1 programs syzkaller login: [ 47.160763][ T4022] cgroup: Unknown subsys name 'net' [ 47.412365][ T4022] cgroup: Unknown subsys name 'rlimit' [ 47.802467][ T4022] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 58.449885][ T4046] chnl_net:caif_netlink_parms(): no params data found [ 58.489643][ T4046] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.491270][ T4046] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.493699][ T4046] device bridge_slave_0 entered promiscuous mode [ 58.497737][ T4046] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.499213][ T4046] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.501429][ T4046] device bridge_slave_1 entered promiscuous mode [ 58.520142][ T4046] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.523800][ T4046] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.540448][ T4046] team0: Port device team_slave_0 added [ 58.543344][ T4046] team0: Port device team_slave_1 added [ 58.556187][ T4046] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 58.557636][ T4046] 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. [ 58.562941][ T4046] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 58.570370][ T4046] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 58.571892][ T4046] 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. [ 58.577212][ T4046] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 58.658077][ T4046] device hsr_slave_0 entered promiscuous mode [ 58.696109][ T4046] device hsr_slave_1 entered promiscuous mode [ 58.822521][ T4046] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.891385][ T4046] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.930314][ T4046] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.978042][ T4046] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.045406][ T4046] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.047191][ T4046] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.049023][ T4046] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.050473][ T4046] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.137278][ T4046] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.143861][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.149437][ T291] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.151929][ T291] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.154551][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.169830][ T4046] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.178482][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.180765][ T291] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.182212][ T291] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.186345][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.188429][ T291] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.189858][ T291] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.203026][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.205498][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.213575][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.220894][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.237467][ T4046] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.240078][ T4046] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.247673][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.316207][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.317882][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.326893][ T4046] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.341819][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 59.359205][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 59.363091][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 59.365159][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 59.371917][ T4046] device veth0_vlan entered promiscuous mode [ 59.379965][ T4046] device veth1_vlan entered promiscuous mode [ 59.395367][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 59.397648][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 59.400005][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 59.407373][ T4046] device veth0_macvtap entered promiscuous mode [ 59.411708][ T4046] device veth1_macvtap entered promiscuous mode [ 59.427260][ T4046] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 59.429061][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 59.432070][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 59.440118][ T4046] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 59.441734][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 59.444142][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 59.449949][ T4046] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.451745][ T4046] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.453494][ T4046] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 59.455317][ T4046] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.650888][ T136] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 60.705265][ T442] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 60.707402][ T442] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 60.709977][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 60.723383][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 60.725131][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 60.728414][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 1970/01/01 00:01:01 executed programs: 0 [ 61.300730][ T4101] chnl_net:caif_netlink_parms(): no params data found [ 61.334161][ T4101] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.335863][ T4101] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.337909][ T4101] device bridge_slave_0 entered promiscuous mode [ 61.341144][ T4101] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.342863][ T4101] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.345001][ T4101] device bridge_slave_1 entered promiscuous mode [ 61.361107][ T4101] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.364862][ T4101] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.381164][ T4101] team0: Port device team_slave_0 added [ 61.384346][ T4101] team0: Port device team_slave_1 added [ 61.397072][ T4101] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.398537][ T4101] 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. [ 61.403969][ T4101] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.407764][ T4101] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.409293][ T4101] 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. [ 61.414475][ T4101] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.477918][ T4101] device hsr_slave_0 entered promiscuous mode [ 61.516095][ T4101] device hsr_slave_1 entered promiscuous mode [ 61.556224][ T4101] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 61.557970][ T4101] Cannot create hsr debugfs directory [ 62.933462][ T136] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.216416][ T25] Bluetooth: hci0: command 0x0409 tx timeout [ 65.182185][ T136] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.245216][ T136] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.296058][ T4042] Bluetooth: hci0: command 0x041b tx timeout [ 66.132654][ T4101] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.169441][ T4101] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.207756][ T4101] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.248470][ T4101] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.345426][ T4101] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.352707][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.354752][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.364717][ T4101] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.371608][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.373899][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.378689][ T442] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.380154][ T442] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.382439][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.388086][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.390243][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.392199][ T442] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.393675][ T442] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.398000][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.402686][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.409228][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.412103][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.414462][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.419441][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.421877][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.427253][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.429281][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.433790][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.437223][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.441326][ T4101] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.511863][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.513634][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.520318][ T4101] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.574356][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.577973][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.590508][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.592759][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.595194][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.597821][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.601846][ T4101] device veth0_vlan entered promiscuous mode [ 66.609990][ T4101] device veth1_vlan entered promiscuous mode [ 66.624836][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.630058][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.632205][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.634422][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.639376][ T4101] device veth0_macvtap entered promiscuous mode [ 66.643366][ T4101] device veth1_macvtap entered promiscuous mode [ 66.652387][ T4101] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 66.654833][ T4101] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 66.660263][ T4101] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.662170][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.664346][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.667799][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.670258][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.674446][ T4101] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 66.679313][ T4101] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 66.682332][ T4101] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.684002][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.686230][ T442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.691100][ T4101] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.692831][ T4101] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.694739][ T4101] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.697458][ T4101] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.739372][ T442] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.740962][ T442] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.743427][ T291] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.757493][ T442] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.759241][ T442] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.761840][ T433] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.947096][ T4151] [ 66.947628][ T4151] ====================================================== [ 66.949163][ T4151] WARNING: possible circular locking dependency detected [ 66.950647][ T4151] 5.15.171-syzkaller #0 Not tainted [ 66.951804][ T4151] ------------------------------------------------------ [ 66.953217][ T4151] syz.0.15/4151 is trying to acquire lock: [ 66.954428][ T4151] ffff0000d75f4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xd0/0x1c0 [ 66.956755][ T4151] [ 66.956755][ T4151] but task is already holding lock: [ 66.958411][ T4151] ffff800016e86ee8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 66.960370][ T4151] [ 66.960370][ T4151] which lock already depends on the new lock. [ 66.960370][ T4151] [ 66.962491][ T4151] [ 66.962491][ T4151] the existing dependency chain (in reverse order) is: [ 66.964384][ T4151] [ 66.964384][ T4151] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 66.966119][ T4151] __mutex_lock_common+0x194/0x2154 [ 66.967345][ T4151] mutex_lock_nested+0xa4/0xf8 [ 66.968447][ T4151] rfkill_register+0x44/0x7a4 [ 66.969499][ T4151] hci_register_dev+0x3e0/0x880 [ 66.970587][ T4151] vhci_create_device+0x2c4/0x568 [ 66.971704][ T4151] vhci_write+0x318/0x3b8 [ 66.972713][ T4151] vfs_write+0x884/0xb44 [ 66.973726][ T4151] ksys_write+0x15c/0x26c [ 66.974677][ T4151] __arm64_sys_write+0x7c/0x90 [ 66.975814][ T4151] invoke_syscall+0x98/0x2b8 [ 66.976845][ T4151] el0_svc_common+0x138/0x258 [ 66.977857][ T4151] do_el0_svc+0x58/0x14c [ 66.978835][ T4151] el0_svc+0x7c/0x1f0 [ 66.979842][ T4151] el0t_64_sync_handler+0x84/0xe4 [ 66.980971][ T4151] el0t_64_sync+0x1a0/0x1a4 [ 66.981976][ T4151] [ 66.981976][ T4151] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 66.983667][ T4151] __mutex_lock_common+0x194/0x2154 [ 66.984896][ T4151] mutex_lock_nested+0xa4/0xf8 [ 66.986015][ T4151] vhci_send_frame+0x8c/0x10c [ 66.987090][ T4151] hci_send_frame+0x194/0x2f0 [ 66.988106][ T4151] hci_tx_work+0x9ac/0x16cc [ 66.989250][ T4151] process_one_work+0x790/0x11b8 [ 66.990441][ T4151] worker_thread+0x910/0x1034 [ 66.991520][ T4151] kthread+0x37c/0x45c [ 66.992492][ T4151] ret_from_fork+0x10/0x20 [ 66.993534][ T4151] [ 66.993534][ T4151] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 66.995487][ T4151] __flush_work+0xf8/0x1c0 [ 66.996506][ T4151] flush_work+0x24/0x38 [ 66.997515][ T4151] hci_dev_do_close+0x16c/0x1060 [ 66.998761][ T4151] hci_unregister_dev+0x248/0x4d4 [ 66.999932][ T4151] vhci_release+0x74/0xc4 [ 67.000911][ T4151] __fput+0x1c4/0x800 [ 67.001823][ T4151] ____fput+0x20/0x30 [ 67.002771][ T4151] task_work_run+0x130/0x1e4 [ 67.003869][ T4151] do_exit+0x670/0x20bc [ 67.004854][ T4151] do_group_exit+0x110/0x268 [ 67.005976][ T4151] get_signal+0x634/0x1550 [ 67.007025][ T4151] do_notify_resume+0x3d0/0x32b8 [ 67.008137][ T4151] el0_svc+0xfc/0x1f0 [ 67.009017][ T4151] el0t_64_sync_handler+0x84/0xe4 [ 67.010218][ T4151] el0t_64_sync+0x1a0/0x1a4 [ 67.011337][ T4151] [ 67.011337][ T4151] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 67.013091][ T4151] __mutex_lock_common+0x194/0x2154 [ 67.014242][ T4151] mutex_lock_nested+0xa4/0xf8 [ 67.015502][ T4151] bg_scan_update+0x9c/0x470 [ 67.016597][ T4151] process_one_work+0x790/0x11b8 [ 67.017694][ T4151] worker_thread+0x910/0x1034 [ 67.018869][ T4151] kthread+0x37c/0x45c [ 67.019831][ T4151] ret_from_fork+0x10/0x20 [ 67.020897][ T4151] [ 67.020897][ T4151] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 67.023099][ T4151] __lock_acquire+0x32d4/0x7638 [ 67.024225][ T4151] lock_acquire+0x240/0x77c [ 67.025285][ T4151] __flush_work+0xf8/0x1c0 [ 67.026340][ T4151] __cancel_work_timer+0x3ec/0x548 [ 67.027506][ T4151] cancel_work_sync+0x24/0x38 [ 67.028577][ T4151] hci_request_cancel_all+0xcc/0x2d0 [ 67.029838][ T4151] hci_dev_do_close+0x54/0x1060 [ 67.030973][ T4151] hci_rfkill_set_block+0xdc/0x1d0 [ 67.032231][ T4151] rfkill_set_block+0x18c/0x37c [ 67.033434][ T4151] rfkill_fop_write+0x594/0x750 [ 67.034622][ T4151] vfs_write+0x280/0xb44 [ 67.035651][ T4151] ksys_write+0x15c/0x26c [ 67.036659][ T4151] __arm64_sys_write+0x7c/0x90 [ 67.037794][ T4151] invoke_syscall+0x98/0x2b8 [ 67.038982][ T4151] el0_svc_common+0x138/0x258 [ 67.040078][ T4151] do_el0_svc+0x58/0x14c [ 67.041057][ T4151] el0_svc+0x7c/0x1f0 [ 67.042038][ T4151] el0t_64_sync_handler+0x84/0xe4 [ 67.043294][ T4151] el0t_64_sync+0x1a0/0x1a4 [ 67.044416][ T4151] [ 67.044416][ T4151] other info that might help us debug this: [ 67.044416][ T4151] [ 67.046771][ T4151] Chain exists of: [ 67.046771][ T4151] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 67.046771][ T4151] [ 67.050096][ T4151] Possible unsafe locking scenario: [ 67.050096][ T4151] [ 67.051614][ T4151] CPU0 CPU1 [ 67.052735][ T4151] ---- ---- [ 67.053774][ T4151] lock(rfkill_global_mutex); [ 67.054772][ T4151] lock(&data->open_mutex); [ 67.056189][ T4151] lock(rfkill_global_mutex); [ 67.057599][ T4151] lock((work_completion)(&hdev->bg_scan_update)); [ 67.058894][ T4151] [ 67.058894][ T4151] *** DEADLOCK *** [ 67.058894][ T4151] [ 67.060536][ T4151] 1 lock held by syz.0.15/4151: [ 67.061472][ T4151] #0: ffff800016e86ee8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 67.063572][ T4151] [ 67.063572][ T4151] stack backtrace: [ 67.064756][ T4151] CPU: 1 PID: 4151 Comm: syz.0.15 Not tainted 5.15.171-syzkaller #0 [ 67.066351][ T4151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 67.068459][ T4151] Call trace: [ 67.069200][ T4151] dump_backtrace+0x0/0x530 [ 67.070278][ T4151] show_stack+0x2c/0x3c [ 67.071082][ T4151] dump_stack_lvl+0x108/0x170 [ 67.072124][ T4151] dump_stack+0x1c/0x58 [ 67.073003][ T4151] print_circular_bug+0x150/0x1b8 [ 67.074025][ T4151] check_noncircular+0x2cc/0x378 [ 67.075104][ T4151] __lock_acquire+0x32d4/0x7638 [ 67.076173][ T4151] lock_acquire+0x240/0x77c [ 67.077080][ T4151] __flush_work+0xf8/0x1c0 [ 67.078053][ T4151] __cancel_work_timer+0x3ec/0x548 [ 67.079192][ T4151] cancel_work_sync+0x24/0x38 [ 67.080180][ T4151] hci_request_cancel_all+0xcc/0x2d0 [ 67.081271][ T4151] hci_dev_do_close+0x54/0x1060 [ 67.082316][ T4151] hci_rfkill_set_block+0xdc/0x1d0 [ 67.083360][ T4151] rfkill_set_block+0x18c/0x37c [ 67.084291][ T4151] rfkill_fop_write+0x594/0x750 [ 67.085301][ T4151] vfs_write+0x280/0xb44 [ 67.086214][ T4151] ksys_write+0x15c/0x26c [ 67.087091][ T4151] __arm64_sys_write+0x7c/0x90 [ 67.088145][ T4151] invoke_syscall+0x98/0x2b8 [ 67.089075][ T4151] el0_svc_common+0x138/0x258 [ 67.089994][ T4151] do_el0_svc+0x58/0x14c [ 67.090910][ T4151] el0_svc+0x7c/0x1f0 [ 67.091796][ T4151] el0t_64_sync_handler+0x84/0xe4 [ 67.092834][ T4151] el0t_64_sync+0x1a0/0x1a4