[ 18.933943][ T3692] 8021q: adding VLAN 0 to HW filter on device bond0 [ 18.943341][ T3692] eql: remember to turn off Van-Jacobson compression on your slave devices [ 18.985164][ T380] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 18.988422][ T380] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.115' (ED25519) to the list of known hosts. 1970/01/01 00:00:45 ignoring optional flag "sandboxArg"="0" 1970/01/01 00:00:46 parsed 1 programs syzkaller login: [ 48.771500][ T4027] cgroup: Unknown subsys name 'net' [ 49.060179][ T4027] cgroup: Unknown subsys name 'rlimit' [ 49.448271][ T4027] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 58.212354][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.214084][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.216960][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.230394][ T1700] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.232075][ T1700] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.234322][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 59.876774][ T4093] chnl_net:caif_netlink_parms(): no params data found [ 59.920231][ T4093] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.921823][ T4093] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.924592][ T4093] device bridge_slave_0 entered promiscuous mode [ 59.928826][ T4093] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.930441][ T4093] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.932646][ T4093] device bridge_slave_1 entered promiscuous mode [ 59.950872][ T4093] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.956784][ T4093] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.973697][ T4093] team0: Port device team_slave_0 added [ 59.978288][ T4093] team0: Port device team_slave_1 added [ 59.991675][ T4093] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.993132][ T4093] 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. [ 60.000428][ T4093] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.005046][ T4093] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.006606][ T4093] 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. [ 60.011752][ T4093] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.077916][ T4093] device hsr_slave_0 entered promiscuous mode [ 60.115999][ T4093] device hsr_slave_1 entered promiscuous mode [ 60.246265][ T4093] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.301996][ T4093] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.337976][ T4093] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.367761][ T4093] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.483806][ T4093] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.493542][ T4093] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.495997][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.498104][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.503230][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.507626][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.510090][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.511618][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.513919][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.520082][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.522400][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.525950][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.527471][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.535139][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.549074][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.551889][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.555237][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.565144][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.567710][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.571078][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.573405][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.576307][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.578826][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.581017][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.586550][ T4093] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.665711][ T4093] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.667460][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.669098][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.682566][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 60.687590][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 60.702366][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 60.706092][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 60.708766][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 60.710795][ T255] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 60.714589][ T4093] device veth0_vlan entered promiscuous mode [ 60.720741][ T4093] device veth1_vlan entered promiscuous mode [ 60.734787][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 60.737189][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 60.740152][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 60.742269][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 60.749282][ T4093] device veth0_macvtap entered promiscuous mode [ 60.756602][ T4093] device veth1_macvtap entered promiscuous mode [ 60.772445][ T4093] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 60.775512][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 60.777580][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 60.779694][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 60.781863][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 60.793059][ T4093] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 60.798363][ T4093] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.800624][ T4093] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.802403][ T4093] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.804517][ T4093] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.808096][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 60.810437][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 1970/01/01 00:01:00 executed programs: 0 [ 61.016147][ T4121] chnl_net:caif_netlink_parms(): no params data found [ 61.055976][ T4121] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.057575][ T4121] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.059709][ T4121] device bridge_slave_0 entered promiscuous mode [ 61.062971][ T4121] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.065396][ T4121] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.067533][ T4121] device bridge_slave_1 entered promiscuous mode [ 61.083771][ T4121] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.095889][ T4121] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.110943][ T4121] team0: Port device team_slave_0 added [ 61.114095][ T4121] team0: Port device team_slave_1 added [ 61.128596][ T4121] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.130197][ T4121] 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. [ 61.136286][ T4121] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.140328][ T4121] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.141750][ T4121] 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. [ 61.147289][ T4121] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.216545][ T4121] device hsr_slave_0 entered promiscuous mode [ 61.254752][ T4121] device hsr_slave_1 entered promiscuous mode [ 61.294475][ T4121] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 61.296190][ T4121] Cannot create hsr debugfs directory [ 61.392621][ T4121] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 62.995113][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 63.861999][ T4121] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.074754][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 66.098982][ T4121] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.320947][ T4121] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.725233][ T4121] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.758985][ T4121] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.800014][ T4121] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.866556][ T4121] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.965992][ T4121] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.977217][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.979170][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.985521][ T4121] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.989970][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.992073][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.994059][ T1700] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.995676][ T1700] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.001305][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.010173][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.012377][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.015081][ T136] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.016544][ T136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.021274][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.029393][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.033141][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.037864][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.046036][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.048287][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.050770][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.059023][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 67.061568][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.063693][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.067010][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.069771][ T4121] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.144284][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.146036][ T1700] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.153624][ T4121] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.154602][ T13] Bluetooth: hci0: command 0x040f tx timeout [ 67.176834][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.179146][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.191109][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.193218][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.198426][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.200428][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.204149][ T4121] device veth0_vlan entered promiscuous mode [ 67.210405][ T4121] device veth1_vlan entered promiscuous mode [ 67.226320][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.228528][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.230573][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.232752][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.240220][ T4121] device veth0_macvtap entered promiscuous mode [ 67.244023][ T4121] device veth1_macvtap entered promiscuous mode [ 67.256149][ T4121] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 67.258411][ T4121] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 67.261453][ T4121] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.262968][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.267208][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.269250][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.271315][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.276370][ T4121] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 67.278745][ T4121] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 67.281756][ T4121] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.283393][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.285764][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.289999][ T4121] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.291934][ T4121] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.293864][ T4121] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.297851][ T4121] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.346511][ T1700] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.348259][ T1700] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.350656][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.375313][ T1700] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.377122][ T1700] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.379534][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.487044][ T4135] [ 67.487611][ T4135] ====================================================== [ 67.489015][ T4135] WARNING: possible circular locking dependency detected [ 67.490411][ T4135] 5.15.167-syzkaller #0 Not tainted [ 67.491503][ T4135] ------------------------------------------------------ [ 67.492872][ T4135] syz.0.15/4135 is trying to acquire lock: [ 67.493954][ T4135] ffff0000d6828c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xd0/0x1c0 [ 67.496122][ T4135] [ 67.496122][ T4135] but task is already holding lock: [ 67.497667][ T4135] ffff800016e75ba8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 67.499801][ T4135] [ 67.499801][ T4135] which lock already depends on the new lock. [ 67.499801][ T4135] [ 67.502152][ T4135] [ 67.502152][ T4135] the existing dependency chain (in reverse order) is: [ 67.504019][ T4135] [ 67.504019][ T4135] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 67.505799][ T4135] __mutex_lock_common+0x194/0x2154 [ 67.507171][ T4135] mutex_lock_nested+0xa4/0xf8 [ 67.508373][ T4135] rfkill_register+0x44/0x7a4 [ 67.509521][ T4135] hci_register_dev+0x3e0/0x880 [ 67.510623][ T4135] vhci_create_device+0x2c4/0x568 [ 67.511891][ T4135] vhci_write+0x318/0x3b8 [ 67.512941][ T4135] vfs_write+0x884/0xb44 [ 67.513894][ T4135] ksys_write+0x15c/0x26c [ 67.514855][ T4135] __arm64_sys_write+0x7c/0x90 [ 67.516061][ T4135] invoke_syscall+0x98/0x2b8 [ 67.517202][ T4135] el0_svc_common+0x138/0x258 [ 67.518276][ T4135] do_el0_svc+0x58/0x14c [ 67.519438][ T4135] el0_svc+0x7c/0x1f0 [ 67.520424][ T4135] el0t_64_sync_handler+0x84/0xe4 [ 67.521536][ T4135] el0t_64_sync+0x1a0/0x1a4 [ 67.522611][ T4135] [ 67.522611][ T4135] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 67.524312][ T4135] __mutex_lock_common+0x194/0x2154 [ 67.525489][ T4135] mutex_lock_nested+0xa4/0xf8 [ 67.526572][ T4135] vhci_send_frame+0x8c/0x10c [ 67.527716][ T4135] hci_send_frame+0x194/0x2f0 [ 67.528897][ T4135] hci_tx_work+0x9ac/0x16cc [ 67.529871][ T4135] process_one_work+0x790/0x11b8 [ 67.531103][ T4135] worker_thread+0x910/0x1034 [ 67.532110][ T4135] kthread+0x37c/0x45c [ 67.533051][ T4135] ret_from_fork+0x10/0x20 [ 67.534142][ T4135] [ 67.534142][ T4135] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 67.536132][ T4135] __flush_work+0xf8/0x1c0 [ 67.537278][ T4135] flush_work+0x24/0x38 [ 67.538236][ T4135] hci_dev_do_close+0x16c/0x1060 [ 67.539298][ T4135] hci_unregister_dev+0x248/0x4d4 [ 67.540379][ T4135] vhci_release+0x74/0xc4 [ 67.541360][ T4135] __fput+0x1c4/0x800 [ 67.542392][ T4135] ____fput+0x20/0x30 [ 67.543275][ T4135] task_work_run+0x130/0x1e4 [ 67.544369][ T4135] do_exit+0x670/0x20bc [ 67.545337][ T4135] do_group_exit+0x110/0x268 [ 67.546536][ T4135] get_signal+0x634/0x1550 [ 67.547588][ T4135] do_notify_resume+0x3d0/0x32b8 [ 67.548768][ T4135] el0_svc+0xfc/0x1f0 [ 67.549696][ T4135] el0t_64_sync_handler+0x84/0xe4 [ 67.550915][ T4135] el0t_64_sync+0x1a0/0x1a4 [ 67.551955][ T4135] [ 67.551955][ T4135] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 67.553630][ T4135] __mutex_lock_common+0x194/0x2154 [ 67.554869][ T4135] mutex_lock_nested+0xa4/0xf8 [ 67.555894][ T4135] bg_scan_update+0x9c/0x470 [ 67.556951][ T4135] process_one_work+0x790/0x11b8 [ 67.558209][ T4135] worker_thread+0x910/0x1034 [ 67.559289][ T4135] kthread+0x37c/0x45c [ 67.560290][ T4135] ret_from_fork+0x10/0x20 [ 67.561453][ T4135] [ 67.561453][ T4135] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 67.563663][ T4135] __lock_acquire+0x32d4/0x7638 [ 67.564845][ T4135] lock_acquire+0x240/0x77c [ 67.565996][ T4135] __flush_work+0xf8/0x1c0 [ 67.567116][ T4135] __cancel_work_timer+0x3ec/0x548 [ 67.568257][ T4135] cancel_work_sync+0x24/0x38 [ 67.569237][ T4135] hci_request_cancel_all+0xcc/0x2d0 [ 67.570504][ T4135] hci_dev_do_close+0x54/0x1060 [ 67.571649][ T4135] hci_rfkill_set_block+0xdc/0x1d0 [ 67.572921][ T4135] rfkill_set_block+0x18c/0x37c [ 67.574087][ T4135] rfkill_fop_write+0x594/0x750 [ 67.575178][ T4135] vfs_write+0x280/0xb44 [ 67.576194][ T4135] ksys_write+0x15c/0x26c [ 67.577157][ T4135] __arm64_sys_write+0x7c/0x90 [ 67.578357][ T4135] invoke_syscall+0x98/0x2b8 [ 67.579521][ T4135] el0_svc_common+0x138/0x258 [ 67.580675][ T4135] do_el0_svc+0x58/0x14c [ 67.581543][ T4135] el0_svc+0x7c/0x1f0 [ 67.582543][ T4135] el0t_64_sync_handler+0x84/0xe4 [ 67.583770][ T4135] el0t_64_sync+0x1a0/0x1a4 [ 67.584791][ T4135] [ 67.584791][ T4135] other info that might help us debug this: [ 67.584791][ T4135] [ 67.586996][ T4135] Chain exists of: [ 67.586996][ T4135] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 67.586996][ T4135] [ 67.590242][ T4135] Possible unsafe locking scenario: [ 67.590242][ T4135] [ 67.591809][ T4135] CPU0 CPU1 [ 67.592995][ T4135] ---- ---- [ 67.594061][ T4135] lock(rfkill_global_mutex); [ 67.594996][ T4135] lock(&data->open_mutex); [ 67.596414][ T4135] lock(rfkill_global_mutex); [ 67.597838][ T4135] lock((work_completion)(&hdev->bg_scan_update)); [ 67.599186][ T4135] [ 67.599186][ T4135] *** DEADLOCK *** [ 67.599186][ T4135] [ 67.600797][ T4135] 1 lock held by syz.0.15/4135: [ 67.601817][ T4135] #0: ffff800016e75ba8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 67.603878][ T4135] [ 67.603878][ T4135] stack backtrace: [ 67.605064][ T4135] CPU: 1 PID: 4135 Comm: syz.0.15 Not tainted 5.15.167-syzkaller #0 [ 67.606683][ T4135] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 67.608634][ T4135] Call trace: [ 67.609443][ T4135] dump_backtrace+0x0/0x530 [ 67.610466][ T4135] show_stack+0x2c/0x3c [ 67.611375][ T4135] dump_stack_lvl+0x108/0x170 [ 67.612519][ T4135] dump_stack+0x1c/0x58 [ 67.613473][ T4135] print_circular_bug+0x150/0x1b8 [ 67.614492][ T4135] check_noncircular+0x2cc/0x378 [ 67.615565][ T4135] __lock_acquire+0x32d4/0x7638 [ 67.616674][ T4135] lock_acquire+0x240/0x77c [ 67.617555][ T4135] __flush_work+0xf8/0x1c0 [ 67.618520][ T4135] __cancel_work_timer+0x3ec/0x548 [ 67.619612][ T4135] cancel_work_sync+0x24/0x38 [ 67.620632][ T4135] hci_request_cancel_all+0xcc/0x2d0 [ 67.621792][ T4135] hci_dev_do_close+0x54/0x1060 [ 67.622757][ T4135] hci_rfkill_set_block+0xdc/0x1d0 [ 67.623842][ T4135] rfkill_set_block+0x18c/0x37c [ 67.624770][ T4135] rfkill_fop_write+0x594/0x750 [ 67.625789][ T4135] vfs_write+0x280/0xb44 [ 67.626731][ T4135] ksys_write+0x15c/0x26c [ 67.627657][ T4135] __arm64_sys_write+0x7c/0x90 [ 67.628700][ T4135] invoke_syscall+0x98/0x2b8 [ 67.629706][ T4135] el0_svc_common+0x138/0x258 [ 67.630814][ T4135] do_el0_svc+0x58/0x14c [ 67.631626][ T4135] el0_svc+0x7c/0x1f0 [ 67.632439][ T4135] el0t_64_sync_handler+0x84/0xe4 [ 67.633567][ T4135] el0t_64_sync+0x1a0/0x1a4