Warning: Permanently added '10.128.0.82' (ED25519) to the list of known hosts. 2025/08/18 21:38:24 ignoring optional flag "sandboxArg"="0" 2025/08/18 21:38:25 parsed 1 programs syzkaller login: [ 56.592076][ T4188] cgroup: Unknown subsys name 'net' [ 56.709527][ T4188] cgroup: Unknown subsys name 'rlimit' [ 57.833892][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 59.666073][ T1228] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.673997][ T1228] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.702955][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 59.717543][ T1229] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 59.726312][ T1229] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 59.735447][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 60.466189][ T4245] chnl_net:caif_netlink_parms(): no params data found [ 60.523322][ T4245] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.530746][ T4245] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.538545][ T4245] device bridge_slave_0 entered promiscuous mode [ 60.547385][ T4245] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.555142][ T4245] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.563039][ T4245] device bridge_slave_1 entered promiscuous mode [ 60.587797][ T4245] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.599598][ T4245] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.622495][ T4245] team0: Port device team_slave_0 added [ 60.630155][ T4245] team0: Port device team_slave_1 added [ 60.648478][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 60.655490][ T4245] 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. [ 60.681579][ T4245] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 60.696151][ T4245] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 60.703222][ T4245] 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. [ 60.731684][ T4245] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.767567][ T4245] device hsr_slave_0 entered promiscuous mode [ 60.775305][ T4245] device hsr_slave_1 entered promiscuous mode [ 60.890616][ T4245] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.931910][ T4245] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.950850][ T4245] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.960736][ T4245] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.018960][ T4245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.029894][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.038482][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.048855][ T4245] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.058414][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.067437][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.076349][ T1228] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.083485][ T1228] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.092083][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.102945][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.111999][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.121058][ T1228] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.128134][ T1228] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.138251][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.149155][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.159577][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.169322][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.178785][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.188911][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.197536][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.208839][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.220503][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.230180][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.306826][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.315437][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.326316][ T4245] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.357015][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.375304][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.383571][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.391587][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.401799][ T4245] device veth0_vlan entered promiscuous mode [ 61.426157][ T4245] device veth1_vlan entered promiscuous mode [ 61.441206][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 61.449338][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 61.458200][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 61.469778][ T4245] device veth0_macvtap entered promiscuous mode [ 61.497209][ T4245] device veth1_macvtap entered promiscuous mode [ 61.512425][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 61.522736][ T4245] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 61.533343][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 61.541863][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 61.551264][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 61.559956][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 61.568865][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 61.579644][ T4245] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.588958][ T4245] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.597862][ T4245] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.606820][ T4245] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2025/08/18 21:38:33 executed programs: 0 [ 62.990483][ T4295] chnl_net:caif_netlink_parms(): no params data found [ 63.048890][ T4295] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.056168][ T4295] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.064131][ T4295] device bridge_slave_0 entered promiscuous mode [ 63.074653][ T4295] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.081758][ T4295] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.092102][ T4295] device bridge_slave_1 entered promiscuous mode [ 63.115816][ T4295] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.128357][ T4295] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.155137][ T4295] team0: Port device team_slave_0 added [ 63.162545][ T4295] team0: Port device team_slave_1 added [ 63.185276][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.192265][ T4295] 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. [ 63.219486][ T4295] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.232494][ T4295] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.239614][ T4295] 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. [ 63.265539][ T4295] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.298033][ T4295] device hsr_slave_0 entered promiscuous mode [ 63.305813][ T4295] device hsr_slave_1 entered promiscuous mode [ 63.312346][ T4295] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.320417][ T4295] Cannot create hsr debugfs directory [ 63.390518][ T4295] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 64.875191][ T13] Bluetooth: hci0: command 0x0409 tx timeout [ 66.331262][ T4295] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.468957][ T4295] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.531107][ T4295] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.638041][ T4295] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.648416][ T4295] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.667576][ T4295] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.676770][ T4295] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.733716][ T4295] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.746737][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.754889][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.768415][ T4295] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.778523][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.787130][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.796486][ T1228] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.803522][ T1228] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.811923][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.833679][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.842872][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.851511][ T1228] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.858594][ T1228] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.867523][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.877930][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.900693][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.909507][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.918194][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.929011][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.937498][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.954635][ T4260] Bluetooth: hci0: command 0x041b tx timeout [ 66.964369][ T4295] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.974924][ T4295] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.986892][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.995413][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.003644][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.012941][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.023532][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.103493][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.111356][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.123784][ T4295] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.139645][ T9] device hsr_slave_0 left promiscuous mode [ 67.146231][ T9] device hsr_slave_1 left promiscuous mode [ 67.152506][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 67.160560][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 67.169295][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 67.176752][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 67.184319][ T9] device bridge_slave_1 left promiscuous mode [ 67.191129][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.202868][ T9] device bridge_slave_0 left promiscuous mode [ 67.209890][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.224844][ T9] device veth1_macvtap left promiscuous mode [ 67.231059][ T9] device veth0_macvtap left promiscuous mode [ 67.237380][ T9] device veth1_vlan left promiscuous mode [ 67.243470][ T9] device veth0_vlan left promiscuous mode [ 67.364338][ T9] team0 (unregistering): Port device team_slave_1 removed [ 67.376096][ T9] team0 (unregistering): Port device team_slave_0 removed [ 67.388572][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 67.400661][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 67.447072][ T9] bond0 (unregistering): Released all slaves [ 67.494286][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.502983][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.517753][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.526529][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.535594][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.543350][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.556861][ T4295] device veth0_vlan entered promiscuous mode [ 67.577025][ T4295] device veth1_vlan entered promiscuous mode [ 67.592299][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.601153][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.609494][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.618635][ T1229] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.630910][ T4295] device veth0_macvtap entered promiscuous mode [ 67.640787][ T4295] device veth1_macvtap entered promiscuous mode [ 67.660667][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.668324][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.676839][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.685132][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.693514][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.705686][ T4295] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.713100][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.722510][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.733415][ T4295] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.742901][ T4295] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.752219][ T4295] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.761340][ T4295] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.813277][ T1228] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.822230][ T1228] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.832946][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.848441][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.857160][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.866653][ T1228] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.990758][ T4314] [ 67.993123][ T4314] ====================================================== [ 68.000126][ T4314] WARNING: possible circular locking dependency detected [ 68.007229][ T4314] 5.15.189-syzkaller #0 Not tainted [ 68.012407][ T4314] ------------------------------------------------------ [ 68.019492][ T4314] syz.0.17/4314 is trying to acquire lock: [ 68.025278][ T4314] ffff888025560c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 68.036412][ T4314] [ 68.036412][ T4314] but task is already holding lock: [ 68.043854][ T4314] ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 68.053502][ T4314] [ 68.053502][ T4314] which lock already depends on the new lock. [ 68.053502][ T4314] [ 68.063888][ T4314] [ 68.063888][ T4314] the existing dependency chain (in reverse order) is: [ 68.072886][ T4314] [ 68.072886][ T4314] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 68.080869][ T4314] __mutex_lock_common+0x1eb/0x2390 [ 68.086587][ T4314] mutex_lock_nested+0x17/0x20 [ 68.091866][ T4314] rfkill_register+0x33/0x8a0 [ 68.097058][ T4314] hci_register_dev+0x452/0x970 [ 68.102416][ T4314] vhci_create_device+0x32c/0x5c0 [ 68.107948][ T4314] vhci_write+0x391/0x450 [ 68.112789][ T4314] vfs_write+0x712/0xd00 [ 68.117534][ T4314] ksys_write+0x14d/0x250 [ 68.122367][ T4314] do_syscall_64+0x4c/0xa0 [ 68.127293][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.133699][ T4314] [ 68.133699][ T4314] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 68.141503][ T4314] __mutex_lock_common+0x1eb/0x2390 [ 68.147215][ T4314] mutex_lock_nested+0x17/0x20 [ 68.152489][ T4314] vhci_send_frame+0x88/0x100 [ 68.157678][ T4314] hci_send_frame+0x1a9/0x2e0 [ 68.162869][ T4314] hci_tx_work+0x9f9/0x1710 [ 68.167884][ T4314] process_one_work+0x863/0x1000 [ 68.173334][ T4314] worker_thread+0xaa8/0x12a0 [ 68.178519][ T4314] kthread+0x436/0x520 [ 68.183094][ T4314] ret_from_fork+0x1f/0x30 [ 68.188010][ T4314] [ 68.188010][ T4314] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 68.197193][ T4314] __flush_work+0xdd/0x1b0 [ 68.202106][ T4314] hci_dev_do_close+0x1e7/0x1030 [ 68.207538][ T4314] hci_unregister_dev+0x2d7/0x580 [ 68.213062][ T4314] vhci_release+0x73/0xc0 [ 68.217890][ T4314] __fput+0x234/0x930 [ 68.222369][ T4314] task_work_run+0x125/0x1a0 [ 68.227451][ T4314] do_exit+0x61e/0x20a0 [ 68.232103][ T4314] do_group_exit+0x12e/0x300 [ 68.237187][ T4314] get_signal+0x6ca/0x12c0 [ 68.242098][ T4314] arch_do_signal_or_restart+0xc1/0x1300 [ 68.248340][ T4314] exit_to_user_mode_loop+0x9e/0x130 [ 68.254133][ T4314] exit_to_user_mode_prepare+0xb1/0x140 [ 68.260179][ T4314] syscall_exit_to_user_mode+0x16/0x40 [ 68.266141][ T4314] do_syscall_64+0x58/0xa0 [ 68.271062][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.277458][ T4314] [ 68.277458][ T4314] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 68.285077][ T4314] __mutex_lock_common+0x1eb/0x2390 [ 68.290776][ T4314] mutex_lock_nested+0x17/0x20 [ 68.296040][ T4314] bg_scan_update+0x44/0x3b0 [ 68.301127][ T4314] process_one_work+0x863/0x1000 [ 68.306566][ T4314] worker_thread+0xaa8/0x12a0 [ 68.311743][ T4314] kthread+0x436/0x520 [ 68.316328][ T4314] ret_from_fork+0x1f/0x30 [ 68.321254][ T4314] [ 68.321254][ T4314] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 68.331118][ T4314] __lock_acquire+0x2c33/0x7c60 [ 68.336480][ T4314] lock_acquire+0x197/0x3f0 [ 68.341493][ T4314] __flush_work+0xdd/0x1b0 [ 68.346422][ T4314] __cancel_work_timer+0x3ac/0x520 [ 68.352123][ T4314] hci_request_cancel_all+0xcc/0x300 [ 68.357909][ T4314] hci_dev_do_close+0x4e/0x1030 [ 68.363271][ T4314] hci_rfkill_set_block+0x10a/0x190 [ 68.368966][ T4314] rfkill_set_block+0x1c6/0x420 [ 68.374337][ T4314] rfkill_fop_write+0x458/0x560 [ 68.379684][ T4314] vfs_write+0x300/0xd00 [ 68.384420][ T4314] ksys_write+0x14d/0x250 [ 68.389241][ T4314] do_syscall_64+0x4c/0xa0 [ 68.394155][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.400543][ T4314] [ 68.400543][ T4314] other info that might help us debug this: [ 68.400543][ T4314] [ 68.410744][ T4314] Chain exists of: [ 68.410744][ T4314] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 68.410744][ T4314] [ 68.426440][ T4314] Possible unsafe locking scenario: [ 68.426440][ T4314] [ 68.433862][ T4314] CPU0 CPU1 [ 68.439339][ T4314] ---- ---- [ 68.444682][ T4314] lock(rfkill_global_mutex); [ 68.449424][ T4314] lock(&data->open_mutex); [ 68.456513][ T4314] lock(rfkill_global_mutex); [ 68.463811][ T4314] lock((work_completion)(&hdev->bg_scan_update)); [ 68.470375][ T4314] [ 68.470375][ T4314] *** DEADLOCK *** [ 68.470375][ T4314] [ 68.478492][ T4314] 1 lock held by syz.0.17/4314: [ 68.483317][ T4314] #0: ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 68.493470][ T4314] [ 68.493470][ T4314] stack backtrace: [ 68.499339][ T4314] CPU: 1 PID: 4314 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0 [ 68.507289][ T4314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 68.517339][ T4314] Call Trace: [ 68.520608][ T4314] [ 68.523518][ T4314] dump_stack_lvl+0x168/0x230 [ 68.528178][ T4314] ? load_image+0x3b0/0x3b0 [ 68.532664][ T4314] ? show_regs_print_info+0x20/0x20 [ 68.537851][ T4314] ? print_circular_bug+0x12b/0x1a0 [ 68.543114][ T4314] check_noncircular+0x274/0x310 [ 68.548029][ T4314] ? add_chain_block+0x940/0x940 [ 68.552939][ T4314] ? lockdep_lock+0xdc/0x1e0 [ 68.557506][ T4314] ? __lock_acquire+0x12d9/0x7c60 [ 68.562505][ T4314] ? lockdep_lock+0x1e0/0x1e0 [ 68.567163][ T4314] ? mark_lock+0x94/0x320 [ 68.571468][ T4314] __lock_acquire+0x2c33/0x7c60 [ 68.576300][ T4314] ? verify_lock_unused+0x140/0x140 [ 68.581474][ T4314] ? verify_lock_unused+0x140/0x140 [ 68.586651][ T4314] lock_acquire+0x197/0x3f0 [ 68.591131][ T4314] ? __flush_work+0xc1/0x1b0 [ 68.595698][ T4314] ? __lock_acquire+0x7c60/0x7c60 [ 68.600708][ T4314] ? read_lock_is_recursive+0x10/0x10 [ 68.606057][ T4314] ? start_flush_work+0x776/0x820 [ 68.611143][ T4314] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 68.617014][ T4314] ? _raw_spin_unlock+0x40/0x40 [ 68.621841][ T4314] __flush_work+0xdd/0x1b0 [ 68.626232][ T4314] ? __flush_work+0xc1/0x1b0 [ 68.630800][ T4314] ? flush_work+0x20/0x20 [ 68.635111][ T4314] ? try_to_grab_pending+0xf3/0x7e0 [ 68.640283][ T4314] ? lockdep_hardirqs_off+0x70/0x100 [ 68.645628][ T4314] ? mark_lock+0x94/0x320 [ 68.649936][ T4314] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 68.655891][ T4314] ? lock_chain_count+0x20/0x20 [ 68.660715][ T4314] ? mark_lock+0x94/0x320 [ 68.665022][ T4314] ? __cancel_work_timer+0x331/0x520 [ 68.670282][ T4314] __cancel_work_timer+0x3ac/0x520 [ 68.675367][ T4314] ? cancel_work_sync+0x20/0x20 [ 68.680226][ T4314] ? __cancel_work+0x1f4/0x2d0 [ 68.684962][ T4314] ? lockdep_hardirqs_on+0x94/0x140 [ 68.690138][ T4314] ? __cancel_work+0x26f/0x2d0 [ 68.694876][ T4314] ? cancel_work+0x20/0x20 [ 68.699267][ T4314] ? lock_chain_count+0x20/0x20 [ 68.704092][ T4314] hci_request_cancel_all+0xcc/0x300 [ 68.709355][ T4314] hci_dev_do_close+0x4e/0x1030 [ 68.714203][ T4314] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 68.720332][ T4314] ? _raw_spin_unlock+0x40/0x40 [ 68.725158][ T4314] hci_rfkill_set_block+0x10a/0x190 [ 68.730332][ T4314] ? rcu_lock_release+0x20/0x20 [ 68.735156][ T4314] rfkill_set_block+0x1c6/0x420 [ 68.739983][ T4314] rfkill_fop_write+0x458/0x560 [ 68.744809][ T4314] ? verify_lock_unused+0x140/0x140 [ 68.749989][ T4314] ? rfkill_fop_read+0x4b0/0x4b0 [ 68.754900][ T4314] ? common_file_perm+0x150/0x1c0 [ 68.759922][ T4314] ? fsnotify_perm+0x5d/0x560 [ 68.764579][ T4314] ? security_file_permission+0x75/0xa0 [ 68.770099][ T4314] ? rfkill_fop_read+0x4b0/0x4b0 [ 68.775013][ T4314] vfs_write+0x300/0xd00 [ 68.779233][ T4314] ? file_end_write+0x250/0x250 [ 68.784060][ T4314] ? __context_tracking_exit+0x4c/0x80 [ 68.789497][ T4314] ? __lock_acquire+0x7c60/0x7c60 [ 68.794501][ T4314] ? __fdget_pos+0x1e2/0x370 [ 68.799072][ T4314] ksys_write+0x14d/0x250 [ 68.803377][ T4314] ? __ia32_sys_read+0x80/0x80 [ 68.808124][ T4314] ? lockdep_hardirqs_on+0x94/0x140 [ 68.813298][ T4314] do_syscall_64+0x4c/0xa0 [ 68.817689][ T4314] ? clear_bhb_loop+0x30/0x80 [ 68.822340][ T4314] ? clear_bhb_loop+0x30/0x80 [ 68.826993][ T4314] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 68.832878][ T4314] RIP: 0033:0x7fb18b1d7be9 [ 68.837272][ T4314] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 68.856853][ T4314] RSP: 002b:00007ffebda595f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 68.865243][ T4314] RAX: ffffffffffffffda RBX: 00007fb18b3fefa0 RCX: 00007fb18b1d7be9 [ 68.873283][ T4314] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 68.881229][ T4314] RBP: 00007fb18b25ae19 R08: 0000000000000000 R09: 0000000000000000 [ 68.889177][ T4314] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 68.897145][ T4314] R13: 00007fb18b3fefa0 R14: 00007fb18b3fefa0 R15: 0000000000000003 [ 68.905099][ T4314]