Warning: Permanently added '10.128.0.71' (ED25519) to the list of known hosts. 1970/01/01 00:00:40 ignoring optional flag "sandboxArg"="0" 1970/01/01 00:00:41 parsed 1 programs syzkaller login: [ 44.054666][ T4027] cgroup: Unknown subsys name 'net' [ 44.291849][ T4027] cgroup: Unknown subsys name 'rlimit' [ 44.605538][ T4027] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 56.812961][ T4052] chnl_net:caif_netlink_parms(): no params data found [ 56.852372][ T4052] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.854030][ T4052] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.857624][ T4052] device bridge_slave_0 entered promiscuous mode [ 56.873440][ T4052] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.874988][ T4052] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.877228][ T4052] device bridge_slave_1 entered promiscuous mode [ 56.892289][ T4052] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.897414][ T4052] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.915624][ T4052] team0: Port device team_slave_0 added [ 56.919169][ T4052] team0: Port device team_slave_1 added [ 56.933015][ T4052] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.934548][ T4052] 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. [ 56.940297][ T4052] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.944136][ T4052] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.945566][ T4052] 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. [ 56.950888][ T4052] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.008465][ T4052] device hsr_slave_0 entered promiscuous mode [ 57.056270][ T4052] device hsr_slave_1 entered promiscuous mode [ 57.188515][ T4052] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.243780][ T4052] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.290711][ T4052] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.331384][ T4052] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.395799][ T4052] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.397408][ T4052] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.399577][ T4052] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.401044][ T4052] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.480093][ T4052] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.488894][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.492966][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.495537][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.499085][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.507736][ T4052] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.513787][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.515818][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.517431][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.523562][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.525575][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.527191][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.543305][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.547793][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.552600][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.567574][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.573765][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.579394][ T4052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.650505][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.652311][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.661505][ T4052] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.675883][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.693265][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.697504][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.699583][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.704130][ T4052] device veth0_vlan entered promiscuous mode [ 57.711703][ T4052] device veth1_vlan entered promiscuous mode [ 57.732110][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.734248][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.738453][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.742796][ T4052] device veth0_macvtap entered promiscuous mode [ 57.747349][ T4052] device veth1_macvtap entered promiscuous mode [ 57.758919][ T4052] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.760617][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.763453][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.769952][ T4052] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.773596][ T4052] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.775365][ T4052] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.778890][ T4052] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.780813][ T4052] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.784569][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.397819][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.399653][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.402201][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.421272][ T301] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.423009][ T301] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.425299][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 58.942920][ T675] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 61.013441][ T675] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.282562][ T675] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.333876][ T675] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:04 executed programs: 0 [ 64.230420][ T4141] chnl_net:caif_netlink_parms(): no params data found [ 64.267118][ T4141] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.268789][ T4141] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.270991][ T4141] device bridge_slave_0 entered promiscuous mode [ 64.274393][ T4141] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.276017][ T4141] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.278379][ T4141] device bridge_slave_1 entered promiscuous mode [ 64.328929][ T4141] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.332810][ T4141] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.351171][ T4141] team0: Port device team_slave_0 added [ 64.354166][ T4141] team0: Port device team_slave_1 added [ 64.368451][ T4141] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.369817][ T4141] 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. [ 64.375282][ T4141] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.396356][ T4141] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.397787][ T4141] 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. [ 64.402842][ T4141] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.478675][ T4141] device hsr_slave_0 entered promiscuous mode [ 64.536349][ T4141] device hsr_slave_1 entered promiscuous mode [ 64.575948][ T4141] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 64.577639][ T4141] Cannot create hsr debugfs directory [ 65.122582][ T4141] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.168478][ T4141] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.210129][ T4141] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.269570][ T4141] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.367269][ T4141] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.373952][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.377272][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.383652][ T4141] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.389230][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.391573][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.393598][ T511] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.395056][ T511] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.401183][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.417280][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.419627][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.421663][ T301] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.423148][ T301] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.425038][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.432843][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.435327][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.439224][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.441481][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.443828][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.449547][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.454771][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.457147][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.461659][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.463865][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.470729][ T4141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.571086][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.572805][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.579231][ T4141] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.592224][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.594579][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.609353][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.611540][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.614445][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.617205][ T511] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.622316][ T4141] device veth0_vlan entered promiscuous mode [ 65.629705][ T4141] device veth1_vlan entered promiscuous mode [ 65.643995][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.650549][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.652552][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 65.654626][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.660133][ T4141] device veth0_macvtap entered promiscuous mode [ 65.665641][ T4141] device veth1_macvtap entered promiscuous mode [ 65.678580][ T4141] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 65.681070][ T4141] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 65.684357][ T4141] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.686642][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.688781][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 65.690835][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 65.692913][ T301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.698686][ T4141] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 65.701203][ T4141] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 65.704015][ T4141] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.705608][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.708345][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.713301][ T4141] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.715244][ T4141] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.717176][ T4141] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.719021][ T4141] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.774331][ T511] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.776208][ T511] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.778694][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 65.799498][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.801229][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.834288][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.001488][ T4235] [ 66.002034][ T4235] ====================================================== [ 66.003625][ T4235] WARNING: possible circular locking dependency detected [ 66.005115][ T4235] 5.15.167-syzkaller #0 Not tainted [ 66.006182][ T4235] ------------------------------------------------------ [ 66.007691][ T4235] syz.0.15/4235 is trying to acquire lock: [ 66.008815][ T4235] ffff0000d92d8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xd0/0x1c0 [ 66.011112][ T4235] [ 66.011112][ T4235] but task is already holding lock: [ 66.012608][ T4235] ffff800016e75ba8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 66.014641][ T4235] [ 66.014641][ T4235] which lock already depends on the new lock. [ 66.014641][ T4235] [ 66.016802][ T4235] [ 66.016802][ T4235] the existing dependency chain (in reverse order) is: [ 66.018638][ T4235] [ 66.018638][ T4235] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 66.020325][ T4235] __mutex_lock_common+0x194/0x2154 [ 66.021489][ T4235] mutex_lock_nested+0xa4/0xf8 [ 66.022606][ T4235] rfkill_register+0x44/0x7a4 [ 66.023757][ T4235] hci_register_dev+0x3e0/0x880 [ 66.024828][ T4235] vhci_create_device+0x2c4/0x568 [ 66.025929][ T4235] vhci_write+0x318/0x3b8 [ 66.026944][ T4235] vfs_write+0x884/0xb44 [ 66.027983][ T4235] ksys_write+0x15c/0x26c [ 66.028925][ T4235] __arm64_sys_write+0x7c/0x90 [ 66.030063][ T4235] invoke_syscall+0x98/0x2b8 [ 66.031159][ T4235] el0_svc_common+0x138/0x258 [ 66.032256][ T4235] do_el0_svc+0x58/0x14c [ 66.033221][ T4235] el0_svc+0x7c/0x1f0 [ 66.034176][ T4235] el0t_64_sync_handler+0x84/0xe4 [ 66.035303][ T4235] el0t_64_sync+0x1a0/0x1a4 [ 66.036371][ T4235] [ 66.036371][ T4235] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 66.037996][ T4235] __mutex_lock_common+0x194/0x2154 [ 66.039264][ T4235] mutex_lock_nested+0xa4/0xf8 [ 66.040449][ T4235] vhci_send_frame+0x8c/0x10c [ 66.041588][ T4235] hci_send_frame+0x194/0x2f0 [ 66.042761][ T4235] hci_tx_work+0x9ac/0x16cc [ 66.043852][ T4235] process_one_work+0x790/0x11b8 [ 66.044918][ T4235] worker_thread+0x910/0x1034 [ 66.045982][ T4235] kthread+0x37c/0x45c [ 66.047009][ T4235] ret_from_fork+0x10/0x20 [ 66.048167][ T4235] [ 66.048167][ T4235] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 66.050083][ T4235] __flush_work+0xf8/0x1c0 [ 66.051176][ T4235] flush_work+0x24/0x38 [ 66.052250][ T4235] hci_dev_do_close+0x16c/0x1060 [ 66.053325][ T4235] hci_unregister_dev+0x248/0x4d4 [ 66.054479][ T4235] vhci_release+0x74/0xc4 [ 66.055470][ T4235] __fput+0x1c4/0x800 [ 66.056400][ T4235] ____fput+0x20/0x30 [ 66.057365][ T4235] task_work_run+0x130/0x1e4 [ 66.058528][ T4235] do_exit+0x670/0x20bc [ 66.059499][ T4235] do_group_exit+0x110/0x268 [ 66.060499][ T4235] get_signal+0x634/0x1550 [ 66.061539][ T4235] do_notify_resume+0x3d0/0x32b8 [ 66.062633][ T4235] el0_svc+0xfc/0x1f0 [ 66.063539][ T4235] el0t_64_sync_handler+0x84/0xe4 [ 66.064664][ T4235] el0t_64_sync+0x1a0/0x1a4 [ 66.065707][ T4235] [ 66.065707][ T4235] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 66.067367][ T4235] __mutex_lock_common+0x194/0x2154 [ 66.068508][ T4235] mutex_lock_nested+0xa4/0xf8 [ 66.069541][ T4235] bg_scan_update+0x9c/0x470 [ 66.070620][ T4235] process_one_work+0x790/0x11b8 [ 66.071745][ T4235] worker_thread+0x910/0x1034 [ 66.072898][ T4235] kthread+0x37c/0x45c [ 66.073892][ T4235] ret_from_fork+0x10/0x20 [ 66.074889][ T4235] [ 66.074889][ T4235] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 66.076876][ T4235] __lock_acquire+0x32d4/0x7638 [ 66.078018][ T4235] lock_acquire+0x240/0x77c [ 66.079040][ T4235] __flush_work+0xf8/0x1c0 [ 66.080065][ T4235] __cancel_work_timer+0x3ec/0x548 [ 66.081295][ T4235] cancel_work_sync+0x24/0x38 [ 66.082336][ T4235] hci_request_cancel_all+0xcc/0x2d0 [ 66.083566][ T4235] hci_dev_do_close+0x54/0x1060 [ 66.084671][ T4235] hci_rfkill_set_block+0xdc/0x1d0 [ 66.085980][ T4235] rfkill_set_block+0x18c/0x37c [ 66.087063][ T4235] rfkill_fop_write+0x594/0x750 [ 66.088244][ T4235] vfs_write+0x280/0xb44 [ 66.089114][ T4235] ksys_write+0x15c/0x26c [ 66.090141][ T4235] __arm64_sys_write+0x7c/0x90 [ 66.091279][ T4235] invoke_syscall+0x98/0x2b8 [ 66.092277][ T4235] el0_svc_common+0x138/0x258 [ 66.093348][ T4235] do_el0_svc+0x58/0x14c [ 66.094429][ T4235] el0_svc+0x7c/0x1f0 [ 66.095315][ T4235] el0t_64_sync_handler+0x84/0xe4 [ 66.096492][ T4235] el0t_64_sync+0x1a0/0x1a4 [ 66.097420][ T4235] [ 66.097420][ T4235] other info that might help us debug this: [ 66.097420][ T4235] [ 66.099455][ T4235] Chain exists of: [ 66.099455][ T4235] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 66.099455][ T4235] [ 66.102820][ T4235] Possible unsafe locking scenario: [ 66.102820][ T4235] [ 66.104383][ T4235] CPU0 CPU1 [ 66.105559][ T4235] ---- ---- [ 66.106613][ T4235] lock(rfkill_global_mutex); [ 66.107650][ T4235] lock(&data->open_mutex); [ 66.109007][ T4235] lock(rfkill_global_mutex); [ 66.110556][ T4235] lock((work_completion)(&hdev->bg_scan_update)); [ 66.111832][ T4235] [ 66.111832][ T4235] *** DEADLOCK *** [ 66.111832][ T4235] [ 66.113684][ T4235] 1 lock held by syz.0.15/4235: [ 66.114760][ T4235] #0: ffff800016e75ba8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x250/0x750 [ 66.116843][ T4235] [ 66.116843][ T4235] stack backtrace: [ 66.118146][ T4235] CPU: 0 PID: 4235 Comm: syz.0.15 Not tainted 5.15.167-syzkaller #0 [ 66.119747][ T4235] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 66.121806][ T4235] Call trace: [ 66.122501][ T4235] dump_backtrace+0x0/0x530 [ 66.123459][ T4235] show_stack+0x2c/0x3c [ 66.124360][ T4235] dump_stack_lvl+0x108/0x170 [ 66.125356][ T4235] dump_stack+0x1c/0x58 [ 66.126220][ T4235] print_circular_bug+0x150/0x1b8 [ 66.127346][ T4235] check_noncircular+0x2cc/0x378 [ 66.128514][ T4235] __lock_acquire+0x32d4/0x7638 [ 66.129564][ T4235] lock_acquire+0x240/0x77c [ 66.130459][ T4235] __flush_work+0xf8/0x1c0 [ 66.131364][ T4235] __cancel_work_timer+0x3ec/0x548 [ 66.132443][ T4235] cancel_work_sync+0x24/0x38 [ 66.133400][ T4235] hci_request_cancel_all+0xcc/0x2d0 [ 66.134558][ T4235] hci_dev_do_close+0x54/0x1060 [ 66.135557][ T4235] hci_rfkill_set_block+0xdc/0x1d0 [ 66.136583][ T4235] rfkill_set_block+0x18c/0x37c [ 66.137603][ T4235] rfkill_fop_write+0x594/0x750 [ 66.138619][ T4235] vfs_write+0x280/0xb44 [ 66.139568][ T4235] ksys_write+0x15c/0x26c [ 66.140401][ T4235] __arm64_sys_write+0x7c/0x90 [ 66.141264][ T4235] invoke_syscall+0x98/0x2b8 [ 66.142147][ T4235] el0_svc_common+0x138/0x258 [ 66.143189][ T4235] do_el0_svc+0x58/0x14c [ 66.144063][ T4235] el0_svc+0x7c/0x1f0 [ 66.144940][ T4235] el0t_64_sync_handler+0x84/0xe4 [ 66.146051][ T4235] el0t_64_sync+0x1a0/0x1a4 [ 66.176092][ T3603] Bluetooth: hci0: command 0x0409 tx timeout