Warning: Permanently added '10.128.0.96' (ED25519) to the list of known hosts. 2025/08/17 21:34:15 ignoring optional flag "sandboxArg"="0" 2025/08/17 21:34:16 parsed 1 programs syzkaller login: [ 56.607671][ T4187] cgroup: Unknown subsys name 'net' [ 56.740145][ T4187] cgroup: Unknown subsys name 'rlimit' [ 58.163112][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 59.770350][ T4207] chnl_net:caif_netlink_parms(): no params data found [ 59.819450][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.826950][ T4207] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.835215][ T4207] device bridge_slave_0 entered promiscuous mode [ 59.846522][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.853610][ T4207] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.861738][ T4207] device bridge_slave_1 entered promiscuous mode [ 59.883322][ T4207] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.896491][ T4207] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.919320][ T4207] team0: Port device team_slave_0 added [ 59.926710][ T4207] team0: Port device team_slave_1 added [ 59.944865][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 59.951806][ T4207] 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. [ 59.978191][ T4207] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 59.992222][ T4207] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 59.999438][ T4207] 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. [ 60.025559][ T4207] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 60.057517][ T4207] device hsr_slave_0 entered promiscuous mode [ 60.064572][ T4207] device hsr_slave_1 entered promiscuous mode [ 60.160745][ T4207] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.172352][ T4207] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.183131][ T4207] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.193808][ T4207] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.221835][ T4207] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.229052][ T4207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.237026][ T4207] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.244130][ T4207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.297822][ T4207] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.312302][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.323445][ T145] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.332941][ T145] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.342111][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 60.356190][ T4207] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.369219][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.379327][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.386433][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.405262][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.414479][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.421545][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.448489][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.458218][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.466803][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.477326][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.485711][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.497724][ T4207] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.616068][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.623553][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.637975][ T4207] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.659200][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 60.681065][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 60.693200][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 60.702034][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 60.713850][ T4207] device veth0_vlan entered promiscuous mode [ 60.728238][ T4207] device veth1_vlan entered promiscuous mode [ 60.750389][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 60.761451][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 60.770072][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 60.782908][ T4207] device veth0_macvtap entered promiscuous mode [ 60.794372][ T4207] device veth1_macvtap entered promiscuous mode [ 60.813576][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 60.822239][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 60.831666][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 60.843489][ T4207] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 60.851300][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 60.860679][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 60.872129][ T4207] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.881367][ T4207] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.891264][ T4207] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 60.900620][ T4207] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 61.432381][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 63.650930][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.868793][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 65.920192][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.255280][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.263263][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.290234][ T3079] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.299868][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.310416][ T3079] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.332780][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.790367][ T9] device hsr_slave_0 left promiscuous mode [ 66.807224][ T9] device hsr_slave_1 left promiscuous mode [ 66.814747][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 66.822169][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 66.856052][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 66.863739][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 66.885666][ T9] device bridge_slave_1 left promiscuous mode [ 66.892788][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.906918][ T9] device bridge_slave_0 left promiscuous mode [ 66.913076][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.929884][ T9] device veth1_macvtap left promiscuous mode [ 66.936155][ T9] device veth0_macvtap left promiscuous mode [ 66.942199][ T9] device veth1_vlan left promiscuous mode [ 66.948143][ T9] device veth0_vlan left promiscuous mode [ 67.082882][ T9] team0 (unregistering): Port device team_slave_1 removed [ 67.093892][ T9] team0 (unregistering): Port device team_slave_0 removed [ 67.106497][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 67.119867][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 67.171844][ T9] bond0 (unregistering): Released all slaves 2025/08/17 21:34:30 executed programs: 0 [ 68.856639][ T4348] chnl_net:caif_netlink_parms(): no params data found [ 68.956370][ T4348] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.963516][ T4348] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.972609][ T4348] device bridge_slave_0 entered promiscuous mode [ 68.982565][ T4348] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.990724][ T4348] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.998702][ T4348] device bridge_slave_1 entered promiscuous mode [ 69.026979][ T4348] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.045161][ T4348] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.095476][ T4348] team0: Port device team_slave_0 added [ 69.109124][ T4348] team0: Port device team_slave_1 added [ 69.159660][ T4348] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 69.185414][ T4348] 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. [ 69.219355][ T4348] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 69.234573][ T4348] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 69.241529][ T4348] 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. [ 69.267652][ T4348] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 69.317100][ T4348] device hsr_slave_0 entered promiscuous mode [ 69.324483][ T4348] device hsr_slave_1 entered promiscuous mode [ 69.452554][ T9] ODEBUG: Out of memory. ODEBUG disabled [ 69.900275][ T4348] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 69.911135][ T4348] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 69.920448][ T4348] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 69.929789][ T4348] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 69.997926][ T4348] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.010562][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.019172][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.030858][ T4348] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.042544][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.052073][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.061525][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.068698][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.086593][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 70.096183][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.105440][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.114037][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.121120][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.132783][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.179296][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.190096][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.201987][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.210948][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 70.220162][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.229244][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.238093][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.247504][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.257263][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.267430][ T4348] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.277596][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.423854][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.432392][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.471724][ T4348] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.490033][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 70.499533][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.521526][ T4348] device veth0_vlan entered promiscuous mode [ 70.548493][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.556962][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.566016][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.573771][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.615279][ T4348] device veth1_vlan entered promiscuous mode [ 70.636398][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 70.645498][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 70.653921][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 70.665992][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 70.674556][ T4406] Bluetooth: hci0: command 0x0409 tx timeout [ 70.676443][ T4348] device veth0_macvtap entered promiscuous mode [ 70.693624][ T4348] device veth1_macvtap entered promiscuous mode [ 70.739456][ T4348] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 70.748218][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 70.757554][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 70.768581][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 70.777723][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 70.790333][ T4348] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 70.797861][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 70.807496][ T3079] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 70.818945][ T4348] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.827999][ T4348] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.837348][ T4348] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.846787][ T4348] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 70.941940][ T3079] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 70.954491][ T3079] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 70.975343][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 70.989268][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.000900][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.007554][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.026539][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.052334][ T145] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.103914][ T4473] [ 71.106272][ T4473] ====================================================== [ 71.113301][ T4473] WARNING: possible circular locking dependency detected [ 71.120323][ T4473] 5.15.189-syzkaller #0 Not tainted [ 71.125523][ T4473] ------------------------------------------------------ [ 71.132536][ T4473] syz.0.17/4473 is trying to acquire lock: [ 71.138338][ T4473] ffff8880777a8c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 71.149402][ T4473] [ 71.149402][ T4473] but task is already holding lock: [ 71.156767][ T4473] ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 71.166458][ T4473] [ 71.166458][ T4473] which lock already depends on the new lock. [ 71.166458][ T4473] [ 71.176866][ T4473] [ 71.176866][ T4473] the existing dependency chain (in reverse order) is: [ 71.185884][ T4473] [ 71.185884][ T4473] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 71.193995][ T4473] __mutex_lock_common+0x1eb/0x2390 [ 71.199750][ T4473] mutex_lock_nested+0x17/0x20 [ 71.205055][ T4473] rfkill_register+0x33/0x8a0 [ 71.210265][ T4473] hci_register_dev+0x452/0x970 [ 71.215643][ T4473] vhci_create_device+0x32c/0x5c0 [ 71.221198][ T4473] vhci_write+0x391/0x450 [ 71.226053][ T4473] vfs_write+0x712/0xd00 [ 71.230849][ T4473] ksys_write+0x14d/0x250 [ 71.235699][ T4473] do_syscall_64+0x4c/0xa0 [ 71.240672][ T4473] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 71.247105][ T4473] [ 71.247105][ T4473] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 71.255025][ T4473] __mutex_lock_common+0x1eb/0x2390 [ 71.260909][ T4473] mutex_lock_nested+0x17/0x20 [ 71.266209][ T4473] vhci_send_frame+0x88/0x100 [ 71.271426][ T4473] hci_send_frame+0x1a9/0x2e0 [ 71.276631][ T4473] hci_tx_work+0x9f9/0x1710 [ 71.281665][ T4473] process_one_work+0x863/0x1000 [ 71.287133][ T4473] worker_thread+0xaa8/0x12a0 [ 71.292349][ T4473] kthread+0x436/0x520 [ 71.296946][ T4473] ret_from_fork+0x1f/0x30 [ 71.301899][ T4473] [ 71.301899][ T4473] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 71.311127][ T4473] __flush_work+0xdd/0x1b0 [ 71.316112][ T4473] hci_dev_do_close+0x1e7/0x1030 [ 71.321578][ T4473] hci_unregister_dev+0x2d7/0x580 [ 71.327127][ T4473] vhci_release+0x73/0xc0 [ 71.331989][ T4473] __fput+0x234/0x930 [ 71.336533][ T4473] task_work_run+0x125/0x1a0 [ 71.341655][ T4473] do_exit+0x61e/0x20a0 [ 71.346343][ T4473] do_group_exit+0x12e/0x300 [ 71.351468][ T4473] get_signal+0x6ca/0x12c0 [ 71.356412][ T4473] arch_do_signal_or_restart+0xc1/0x1300 [ 71.362588][ T4473] exit_to_user_mode_loop+0x9e/0x130 [ 71.368523][ T4473] exit_to_user_mode_prepare+0xb1/0x140 [ 71.374895][ T4473] syscall_exit_to_user_mode+0x16/0x40 [ 71.380899][ T4473] do_syscall_64+0x58/0xa0 [ 71.386058][ T4473] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 71.392528][ T4473] [ 71.392528][ T4473] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 71.400197][ T4473] __mutex_lock_common+0x1eb/0x2390 [ 71.405940][ T4473] mutex_lock_nested+0x17/0x20 [ 71.411248][ T4473] bg_scan_update+0x44/0x3b0 [ 71.416374][ T4473] process_one_work+0x863/0x1000 [ 71.421851][ T4473] worker_thread+0xaa8/0x12a0 [ 71.427070][ T4473] kthread+0x436/0x520 [ 71.431671][ T4473] ret_from_fork+0x1f/0x30 [ 71.436627][ T4473] [ 71.436627][ T4473] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 71.446468][ T4473] __lock_acquire+0x2c33/0x7c60 [ 71.451858][ T4473] lock_acquire+0x197/0x3f0 [ 71.456898][ T4473] __flush_work+0xdd/0x1b0 [ 71.461854][ T4473] __cancel_work_timer+0x3ac/0x520 [ 71.467492][ T4473] hci_request_cancel_all+0xcc/0x300 [ 71.473304][ T4473] hci_dev_do_close+0x4e/0x1030 [ 71.478682][ T4473] hci_rfkill_set_block+0x10a/0x190 [ 71.484403][ T4473] rfkill_set_block+0x1c6/0x420 [ 71.489785][ T4473] rfkill_fop_write+0x458/0x560 [ 71.495172][ T4473] vfs_write+0x300/0xd00 [ 71.500113][ T4473] ksys_write+0x14d/0x250 [ 71.504985][ T4473] do_syscall_64+0x4c/0xa0 [ 71.509939][ T4473] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 71.516374][ T4473] [ 71.516374][ T4473] other info that might help us debug this: [ 71.516374][ T4473] [ 71.526609][ T4473] Chain exists of: [ 71.526609][ T4473] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 71.526609][ T4473] [ 71.542348][ T4473] Possible unsafe locking scenario: [ 71.542348][ T4473] [ 71.549792][ T4473] CPU0 CPU1 [ 71.555156][ T4473] ---- ---- [ 71.560524][ T4473] lock(rfkill_global_mutex); [ 71.565298][ T4473] lock(&data->open_mutex); [ 71.572415][ T4473] lock(rfkill_global_mutex); [ 71.579698][ T4473] lock((work_completion)(&hdev->bg_scan_update)); [ 71.586294][ T4473] [ 71.586294][ T4473] *** DEADLOCK *** [ 71.586294][ T4473] [ 71.594443][ T4473] 1 lock held by syz.0.17/4473: [ 71.599290][ T4473] #0: ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 71.609389][ T4473] [ 71.609389][ T4473] stack backtrace: [ 71.615272][ T4473] CPU: 1 PID: 4473 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0 [ 71.623249][ T4473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 71.633316][ T4473] Call Trace: [ 71.636600][ T4473] [ 71.639541][ T4473] dump_stack_lvl+0x168/0x230 [ 71.644243][ T4473] ? load_image+0x3b0/0x3b0 [ 71.648759][ T4473] ? show_regs_print_info+0x20/0x20 [ 71.654142][ T4473] ? print_circular_bug+0x12b/0x1a0 [ 71.659351][ T4473] check_noncircular+0x274/0x310 [ 71.664298][ T4473] ? add_chain_block+0x940/0x940 [ 71.669245][ T4473] ? lockdep_lock+0xdc/0x1e0 [ 71.673850][ T4473] ? __lock_acquire+0x12d9/0x7c60 [ 71.678969][ T4473] ? lockdep_lock+0x1e0/0x1e0 [ 71.683656][ T4473] ? mark_lock+0x94/0x320 [ 71.687996][ T4473] __lock_acquire+0x2c33/0x7c60 [ 71.692874][ T4473] ? verify_lock_unused+0x140/0x140 [ 71.698099][ T4473] lock_acquire+0x197/0x3f0 [ 71.702614][ T4473] ? __flush_work+0xc1/0x1b0 [ 71.707212][ T4473] ? __lock_acquire+0x7c60/0x7c60 [ 71.712271][ T4473] ? read_lock_is_recursive+0x10/0x10 [ 71.717659][ T4473] ? start_flush_work+0x776/0x820 [ 71.722700][ T4473] __flush_work+0xdd/0x1b0 [ 71.727137][ T4473] ? __flush_work+0xc1/0x1b0 [ 71.731743][ T4473] ? flush_work+0x20/0x20 [ 71.736107][ T4473] ? try_to_grab_pending+0xf3/0x7e0 [ 71.741323][ T4473] ? lockdep_hardirqs_off+0x70/0x100 [ 71.746625][ T4473] ? mark_lock+0x94/0x320 [ 71.750975][ T4473] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 71.756971][ T4473] ? lock_chain_count+0x20/0x20 [ 71.761836][ T4473] ? mark_lock+0x94/0x320 [ 71.766182][ T4473] ? __cancel_work_timer+0x331/0x520 [ 71.771482][ T4473] __cancel_work_timer+0x3ac/0x520 [ 71.776727][ T4473] ? cancel_work_sync+0x20/0x20 [ 71.781600][ T4473] ? __cancel_work+0x1f4/0x2d0 [ 71.786375][ T4473] ? lockdep_hardirqs_on+0x94/0x140 [ 71.791592][ T4473] ? __cancel_work+0x26f/0x2d0 [ 71.796375][ T4473] ? cancel_work+0x20/0x20 [ 71.800810][ T4473] ? lock_chain_count+0x20/0x20 [ 71.805682][ T4473] hci_request_cancel_all+0xcc/0x300 [ 71.810981][ T4473] hci_dev_do_close+0x4e/0x1030 [ 71.815850][ T4473] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 71.821756][ T4473] ? _raw_spin_unlock+0x40/0x40 [ 71.826620][ T4473] hci_rfkill_set_block+0x10a/0x190 [ 71.831847][ T4473] ? rcu_lock_release+0x20/0x20 [ 71.836708][ T4473] rfkill_set_block+0x1c6/0x420 [ 71.841580][ T4473] rfkill_fop_write+0x458/0x560 [ 71.846443][ T4473] ? verify_lock_unused+0x140/0x140 [ 71.851658][ T4473] ? rfkill_fop_read+0x4b0/0x4b0 [ 71.856613][ T4473] ? common_file_perm+0x150/0x1c0 [ 71.861678][ T4473] ? fsnotify_perm+0x5d/0x560 [ 71.866366][ T4473] ? security_file_permission+0x75/0xa0 [ 71.871931][ T4473] ? rfkill_fop_read+0x4b0/0x4b0 [ 71.876891][ T4473] vfs_write+0x300/0xd00 [ 71.881159][ T4473] ? file_end_write+0x250/0x250 [ 71.886019][ T4473] ? __context_tracking_exit+0x4c/0x80 [ 71.891505][ T4473] ? __lock_acquire+0x7c60/0x7c60 [ 71.896548][ T4473] ? __fdget_pos+0x1e2/0x370 [ 71.901177][ T4473] ksys_write+0x14d/0x250 [ 71.905526][ T4473] ? __ia32_sys_read+0x80/0x80 [ 71.910281][ T4473] ? lockdep_hardirqs_on+0x94/0x140 [ 71.915467][ T4473] do_syscall_64+0x4c/0xa0 [ 71.919872][ T4473] ? clear_bhb_loop+0x30/0x80 [ 71.924555][ T4473] ? clear_bhb_loop+0x30/0x80 [ 71.929224][ T4473] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 71.935110][ T4473] RIP: 0033:0x7fa605ca2be9 [ 71.939508][ T4473] 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 [ 71.959101][ T4473] RSP: 002b:00007ffcb6020c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 71.967499][ T4473] RAX: ffffffffffffffda RBX: 00007fa605ec9fa0 RCX: 00007fa605ca2be9 [ 71.975470][ T4473] RDX: 0000000000000008 RSI: 00002000000002c0 RDI: 0000000000000003 [ 71.983524][ T4473] RBP: 00007fa605d25e19 R08: 0000000000000000 R09: 0000000000000000 [ 71.991491][ T4473] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 71.999559][ T4473] R13: 00007fa605ec9fa0 R14: 00007fa605ec9fa0 R15: 0000000000000003 [ 72.007520][ T4473]