Warning: Permanently added '10.128.0.45' (ED25519) to the list of known hosts. 1970/01/01 00:00:38 ignoring optional flag "sandboxArg"="0" 1970/01/01 00:00:39 parsed 1 programs syzkaller login: [ 42.266732][ T4040] cgroup: Unknown subsys name 'net' [ 42.485317][ T4040] cgroup: Unknown subsys name 'rlimit' [ 42.880776][ T4040] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS [ 50.846574][ T4063] chnl_net:caif_netlink_parms(): no params data found [ 50.893826][ T4063] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.894988][ T4063] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.896964][ T4063] device bridge_slave_0 entered promiscuous mode [ 50.900546][ T4063] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.901790][ T4063] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.903567][ T4063] device bridge_slave_1 entered promiscuous mode [ 50.924613][ T4063] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.927621][ T4063] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.943065][ T4063] team0: Port device team_slave_0 added [ 50.945567][ T4063] team0: Port device team_slave_1 added [ 50.960932][ T4063] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.962089][ T4063] 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. [ 50.965549][ T4063] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.968659][ T4063] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.970091][ T4063] 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. [ 50.974146][ T4063] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.042094][ T4063] device hsr_slave_0 entered promiscuous mode [ 51.079414][ T4063] device hsr_slave_1 entered promiscuous mode [ 51.207741][ T4063] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.262226][ T4063] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.315538][ T4063] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.355029][ T4063] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.431120][ T4063] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.432242][ T4063] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.433761][ T4063] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.434832][ T4063] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.478399][ T4063] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.486467][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.490021][ T136] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.492028][ T136] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.494112][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.501355][ T4063] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.506253][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.507813][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.508764][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.514051][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.515648][ T136] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.516699][ T136] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.532671][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.534620][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.539460][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.545935][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.552078][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.555869][ T4063] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.681681][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.682966][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.686108][ T4063] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.700664][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.716465][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.718296][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.721668][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.725995][ T4063] device veth0_vlan entered promiscuous mode [ 51.733347][ T4063] device veth1_vlan entered promiscuous mode [ 51.751448][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.753000][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.754802][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.761862][ T4063] device veth0_macvtap entered promiscuous mode [ 51.765760][ T4063] device veth1_macvtap entered promiscuous mode [ 51.778758][ T4063] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.782656][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.784980][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.790477][ T4063] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.792319][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.797281][ T4063] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.798622][ T4063] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.801716][ T4063] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.803111][ T4063] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.205247][ T293] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.206441][ T293] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.208721][ T1652] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.226629][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.227827][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.231691][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 52.964339][ T148] ODEBUG: Out of memory. ODEBUG disabled [ 53.088379][ T148] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:00:53 executed programs: 0 [ 53.948177][ T4136] chnl_net:caif_netlink_parms(): no params data found [ 53.977926][ T4136] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.979012][ T4136] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.980803][ T4136] device bridge_slave_0 entered promiscuous mode [ 53.984318][ T4136] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.985469][ T4136] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.987214][ T4136] device bridge_slave_1 entered promiscuous mode [ 54.001496][ T4136] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.004441][ T4136] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.020502][ T4136] team0: Port device team_slave_0 added [ 54.022940][ T4136] team0: Port device team_slave_1 added [ 54.034046][ T4136] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 54.035207][ T4136] 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. [ 54.038877][ T4136] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 54.041960][ T4136] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 54.042893][ T4136] 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. [ 54.046400][ T4136] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 54.110928][ T4136] device hsr_slave_0 entered promiscuous mode [ 54.169420][ T4136] device hsr_slave_1 entered promiscuous mode [ 54.229195][ T4136] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 54.230660][ T4136] Cannot create hsr debugfs directory [ 55.465103][ T148] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.929859][ T4051] Bluetooth: hci0: command 0x0409 tx timeout [ 56.824740][ T148] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.876266][ T148] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.828659][ T4136] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.863287][ T4136] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.891500][ T4136] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.931942][ T4136] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.013987][ T4136] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.019041][ T25] Bluetooth: hci0: command 0x041b tx timeout [ 58.022327][ T4136] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.023429][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.025079][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.028701][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.030664][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.032175][ T293] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.033233][ T293] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.035901][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.042259][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.043997][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.045753][ T293] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.046861][ T293] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.048388][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.052754][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.056958][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.061904][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.063682][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.070025][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.071952][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.073738][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.075311][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.081323][ T4136] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.083514][ T4136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.085227][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.087084][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.157633][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.158916][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.193469][ T4136] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.204886][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 58.206817][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 58.218059][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 58.220994][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 58.223495][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 58.225029][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 58.228004][ T4136] device veth0_vlan entered promiscuous mode [ 58.233019][ T4136] device veth1_vlan entered promiscuous mode [ 58.245026][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.246673][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.248332][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 58.254452][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.258057][ T4136] device veth0_macvtap entered promiscuous mode [ 58.262028][ T4136] device veth1_macvtap entered promiscuous mode [ 58.270847][ T4136] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 58.272557][ T4136] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 58.275089][ T4136] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.276319][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.278247][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 58.281302][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 58.283946][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.287675][ T4136] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 58.289868][ T4136] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 58.292097][ T4136] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.293313][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 58.295087][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.298586][ T4136] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.300593][ T4136] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.301881][ T4136] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.303168][ T4136] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.342891][ T136] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.349703][ T136] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.352418][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.357510][ T136] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.358822][ T136] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.362105][ T293] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 58.533582][ T4197] [ 58.533955][ T4197] ====================================================== [ 58.535007][ T4197] WARNING: possible circular locking dependency detected [ 58.536143][ T4197] 5.15.189-syzkaller #0 Not tainted [ 58.536853][ T4197] ------------------------------------------------------ [ 58.537970][ T4197] syz.0.17/4197 is trying to acquire lock: [ 58.538950][ T4197] ffff0000dc838c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xcc/0x1bc [ 58.540788][ T4197] [ 58.540788][ T4197] but task is already holding lock: [ 58.541945][ T4197] ffff80001651bc28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x238/0x5cc [ 58.543437][ T4197] [ 58.543437][ T4197] which lock already depends on the new lock. [ 58.543437][ T4197] [ 58.545098][ T4197] [ 58.545098][ T4197] the existing dependency chain (in reverse order) is: [ 58.546543][ T4197] [ 58.546543][ T4197] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 58.547680][ T4197] __mutex_lock_common+0x194/0x1edc [ 58.548554][ T4197] mutex_lock_nested+0xac/0x11c [ 58.549371][ T4197] rfkill_register+0x44/0x77c [ 58.550275][ T4197] hci_register_dev+0x3d8/0x854 [ 58.551082][ T4197] vhci_create_device+0x2bc/0x564 [ 58.552019][ T4197] vhci_write+0x30c/0x3ac [ 58.552822][ T4197] vfs_write+0x7c8/0xa2c [ 58.553583][ T4197] ksys_write+0x120/0x210 [ 58.554297][ T4197] __arm64_sys_write+0x7c/0x90 [ 58.555130][ T4197] invoke_syscall+0x98/0x2b8 [ 58.555907][ T4197] el0_svc_common+0x138/0x258 [ 58.556766][ T4197] do_el0_svc+0x58/0x14c [ 58.557542][ T4197] el0_svc+0x78/0x1e0 [ 58.558174][ T4197] el0t_64_sync_handler+0xcc/0xe4 [ 58.559065][ T4197] el0t_64_sync+0x1a0/0x1a4 [ 58.559919][ T4197] [ 58.559919][ T4197] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 58.561095][ T4197] __mutex_lock_common+0x194/0x1edc [ 58.561933][ T4197] mutex_lock_nested+0xac/0x11c [ 58.562763][ T4197] vhci_send_frame+0x88/0x118 [ 58.563672][ T4197] hci_send_frame+0x194/0x2f0 [ 58.564454][ T4197] hci_tx_work+0x7e4/0x1394 [ 58.565261][ T4197] process_one_work+0x79c/0x1140 [ 58.566055][ T4197] worker_thread+0x8f4/0x101c [ 58.566822][ T4197] kthread+0x374/0x454 [ 58.567512][ T4197] ret_from_fork+0x10/0x20 [ 58.568206][ T4197] [ 58.568206][ T4197] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 58.569632][ T4197] __flush_work+0xf4/0x1bc [ 58.570322][ T4197] flush_work+0x24/0x38 [ 58.571066][ T4197] hci_dev_do_close+0x164/0x105c [ 58.571906][ T4197] hci_unregister_dev+0x23c/0x4c0 [ 58.572860][ T4197] vhci_release+0x74/0xc4 [ 58.573627][ T4197] __fput+0x1c0/0x7f8 [ 58.574369][ T4197] ____fput+0x20/0x30 [ 58.575094][ T4197] task_work_run+0x12c/0x1e0 [ 58.575826][ T4197] do_exit+0x684/0x1f58 [ 58.576639][ T4197] do_group_exit+0x100/0x268 [ 58.577572][ T4197] get_signal+0x73c/0x1340 [ 58.578284][ T4197] do_notify_resume+0x35c/0x3128 [ 58.579049][ T4197] el0_svc+0xf0/0x1e0 [ 58.579710][ T4197] el0t_64_sync_handler+0xcc/0xe4 [ 58.580595][ T4197] el0t_64_sync+0x1a0/0x1a4 [ 58.581502][ T4197] [ 58.581502][ T4197] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 58.582629][ T4197] __mutex_lock_common+0x194/0x1edc [ 58.583405][ T4197] mutex_lock_nested+0xac/0x11c [ 58.584311][ T4197] bg_scan_update+0x48/0x3d0 [ 58.585075][ T4197] process_one_work+0x79c/0x1140 [ 58.585983][ T4197] worker_thread+0x8f4/0x101c [ 58.586763][ T4197] kthread+0x374/0x454 [ 58.587574][ T4197] ret_from_fork+0x10/0x20 [ 58.588420][ T4197] [ 58.588420][ T4197] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 58.589928][ T4197] __lock_acquire+0x2928/0x651c [ 58.590905][ T4197] lock_acquire+0x1f4/0x620 [ 58.591762][ T4197] __flush_work+0xf4/0x1bc [ 58.592497][ T4197] __cancel_work_timer+0x2ec/0x448 [ 58.593454][ T4197] cancel_work_sync+0x24/0x38 [ 58.594174][ T4197] hci_request_cancel_all+0xbc/0x2d0 [ 58.595143][ T4197] hci_dev_do_close+0x54/0x105c [ 58.596022][ T4197] hci_rfkill_set_block+0xdc/0x1d0 [ 58.596898][ T4197] rfkill_set_block+0x18c/0x374 [ 58.597761][ T4197] rfkill_fop_write+0x4a4/0x5cc [ 58.598463][ T4197] vfs_write+0x280/0xa2c [ 58.599182][ T4197] ksys_write+0x120/0x210 [ 58.599976][ T4197] __arm64_sys_write+0x7c/0x90 [ 58.600690][ T4197] invoke_syscall+0x98/0x2b8 [ 58.601449][ T4197] el0_svc_common+0x138/0x258 [ 58.602279][ T4197] do_el0_svc+0x58/0x14c [ 58.603046][ T4197] el0_svc+0x78/0x1e0 [ 58.603839][ T4197] el0t_64_sync_handler+0xcc/0xe4 [ 58.604678][ T4197] el0t_64_sync+0x1a0/0x1a4 [ 58.605509][ T4197] [ 58.605509][ T4197] other info that might help us debug this: [ 58.605509][ T4197] [ 58.607049][ T4197] Chain exists of: [ 58.607049][ T4197] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 58.607049][ T4197] [ 58.609768][ T4197] Possible unsafe locking scenario: [ 58.609768][ T4197] [ 58.611006][ T4197] CPU0 CPU1 [ 58.611754][ T4197] ---- ---- [ 58.612588][ T4197] lock(rfkill_global_mutex); [ 58.613301][ T4197] lock(&data->open_mutex); [ 58.614354][ T4197] lock(rfkill_global_mutex); [ 58.615498][ T4197] lock((work_completion)(&hdev->bg_scan_update)); [ 58.616537][ T4197] [ 58.616537][ T4197] *** DEADLOCK *** [ 58.616537][ T4197] [ 58.617861][ T4197] 1 lock held by syz.0.17/4197: [ 58.618607][ T4197] #0: ffff80001651bc28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x238/0x5cc [ 58.620348][ T4197] [ 58.620348][ T4197] stack backtrace: [ 58.621306][ T4197] CPU: 1 PID: 4197 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0 [ 58.622455][ T4197] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 58.624070][ T4197] Call trace: [ 58.624605][ T4197] dump_backtrace+0x0/0x43c [ 58.625279][ T4197] show_stack+0x2c/0x3c [ 58.625919][ T4197] __dump_stack+0x30/0x40 [ 58.626640][ T4197] dump_stack_lvl+0xf8/0x160 [ 58.627461][ T4197] dump_stack+0x1c/0x5c [ 58.628169][ T4197] print_circular_bug+0x148/0x1b0 [ 58.628956][ T4197] check_noncircular+0x240/0x2d4 [ 58.629778][ T4197] __lock_acquire+0x2928/0x651c [ 58.630444][ T4197] lock_acquire+0x1f4/0x620 [ 58.631160][ T4197] __flush_work+0xf4/0x1bc [ 58.631868][ T4197] __cancel_work_timer+0x2ec/0x448 [ 58.632591][ T4197] cancel_work_sync+0x24/0x38 [ 58.633333][ T4197] hci_request_cancel_all+0xbc/0x2d0 [ 58.634133][ T4197] hci_dev_do_close+0x54/0x105c [ 58.634893][ T4197] hci_rfkill_set_block+0xdc/0x1d0 [ 58.635690][ T4197] rfkill_set_block+0x18c/0x374 [ 58.636379][ T4197] rfkill_fop_write+0x4a4/0x5cc [ 58.637142][ T4197] vfs_write+0x280/0xa2c [ 58.637795][ T4197] ksys_write+0x120/0x210 [ 58.638426][ T4197] __arm64_sys_write+0x7c/0x90 [ 58.639072][ T4197] invoke_syscall+0x98/0x2b8 [ 58.639750][ T4197] el0_svc_common+0x138/0x258 [ 58.640495][ T4197] do_el0_svc+0x58/0x14c [ 58.641141][ T4197] el0_svc+0x78/0x1e0 [ 58.641939][ T4197] el0t_64_sync_handler+0xcc/0xe4 [ 58.642839][ T4197] el0t_64_sync+0x1a0/0x1a4