Warning: Permanently added '10.128.1.184' (ED25519) to the list of known hosts. 2025/08/01 04:41:47 ignoring optional flag "sandboxArg"="0" 2025/08/01 04:41:48 parsed 1 programs syzkaller login: [ 69.916259][ T4191] cgroup: Unknown subsys name 'net' [ 70.056429][ T4191] cgroup: Unknown subsys name 'rlimit' [ 71.373478][ T1432] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.380006][ T1432] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.537846][ T4191] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 73.264060][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.278922][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.291151][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.307193][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.315980][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.324645][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.988913][ T3066] ODEBUG: Out of memory. ODEBUG disabled [ 75.551839][ T4277] chnl_net:caif_netlink_parms(): no params data found [ 75.598426][ T4277] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.606230][ T4277] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.614620][ T4277] device bridge_slave_0 entered promiscuous mode [ 75.624101][ T4277] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.631642][ T4277] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.639710][ T4277] device bridge_slave_1 entered promiscuous mode [ 75.677388][ T4277] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.688292][ T4277] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.732160][ T4277] team0: Port device team_slave_0 added [ 75.739399][ T4277] team0: Port device team_slave_1 added [ 75.758687][ T4277] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.766024][ T4277] 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. [ 75.793228][ T4277] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.805995][ T4277] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.813052][ T4277] 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. [ 75.839231][ T4277] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.885942][ T4277] device hsr_slave_0 entered promiscuous mode [ 75.892997][ T4277] device hsr_slave_1 entered promiscuous mode [ 76.022540][ T4277] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.033229][ T4277] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.042664][ T4277] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.052960][ T4277] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.096852][ T4277] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.104088][ T4277] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.111650][ T4277] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.119009][ T4277] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.179246][ T4277] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.193037][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.203544][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.212779][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.221104][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.233465][ T4277] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.245733][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.254981][ T3013] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.262105][ T3013] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.275664][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.284397][ T3013] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.291510][ T3013] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.324467][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.334194][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.346350][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.359474][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.384639][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.395922][ T4277] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.505984][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.513984][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.526464][ T4277] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.571351][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.580519][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.598483][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.607284][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.620852][ T4277] device veth0_vlan entered promiscuous mode [ 76.627575][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.635606][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.649695][ T4277] device veth1_vlan entered promiscuous mode [ 76.681821][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.689962][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.701657][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.712033][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.723002][ T4277] device veth0_macvtap entered promiscuous mode [ 76.734633][ T4277] device veth1_macvtap entered promiscuous mode [ 76.753131][ T4277] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.761825][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.770117][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.778950][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.788294][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.800022][ T4277] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.808404][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.818230][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.830011][ T4277] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.840628][ T4277] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.849374][ T4277] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.859056][ T4277] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.957000][ T4277] syz-executor (4277) used greatest stack depth: 20704 bytes left 2025/08/01 04:41:58 executed programs: 0 [ 77.715718][ T4299] chnl_net:caif_netlink_parms(): no params data found [ 77.772708][ T4299] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.779908][ T4299] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.788536][ T4299] device bridge_slave_0 entered promiscuous mode [ 77.796679][ T4299] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.803973][ T4299] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.811865][ T4299] device bridge_slave_1 entered promiscuous mode [ 77.842642][ T4299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.855370][ T4299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.891151][ T4299] team0: Port device team_slave_0 added [ 77.898804][ T4299] team0: Port device team_slave_1 added [ 77.918973][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.926154][ T4299] 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. [ 77.952328][ T4299] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 77.970662][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 77.977647][ T4299] 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. [ 78.003822][ T4299] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.050607][ T4299] device hsr_slave_0 entered promiscuous mode [ 78.057598][ T4299] device hsr_slave_1 entered promiscuous mode [ 78.066987][ T4299] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 78.075422][ T4299] Cannot create hsr debugfs directory [ 78.171126][ T4299] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.610850][ T4261] Bluetooth: hci0: command 0x0409 tx timeout [ 81.016498][ T4299] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.690885][ T1325] Bluetooth: hci0: command 0x041b tx timeout [ 82.165176][ T4299] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.246569][ T4299] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.443754][ T4299] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.453574][ T4299] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.462717][ T4299] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.472264][ T4299] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.547045][ T4299] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.558821][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 82.566783][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.582005][ T3066] device hsr_slave_0 left promiscuous mode [ 82.588668][ T3066] device hsr_slave_1 left promiscuous mode [ 82.595387][ T3066] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 82.603096][ T3066] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 82.611721][ T3066] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 82.619133][ T3066] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 82.626905][ T3066] device bridge_slave_1 left promiscuous mode [ 82.633811][ T3066] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.646085][ T3066] device bridge_slave_0 left promiscuous mode [ 82.653788][ T3066] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.671322][ T3066] device veth1_macvtap left promiscuous mode [ 82.677554][ T3066] device veth0_macvtap left promiscuous mode [ 82.683886][ T3066] device veth1_vlan left promiscuous mode [ 82.689816][ T3066] device veth0_vlan left promiscuous mode [ 82.824541][ T3066] team0 (unregistering): Port device team_slave_1 removed [ 82.836375][ T3066] team0 (unregistering): Port device team_slave_0 removed [ 82.848699][ T3066] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 82.863373][ T3066] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.917691][ T3066] bond0 (unregistering): Released all slaves [ 82.970080][ T4299] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.980961][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 82.989890][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.999011][ T1183] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.006120][ T1183] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.014987][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 83.030603][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 83.039476][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.048961][ T1183] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.056103][ T1183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.068889][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 83.080005][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 83.098368][ T4299] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 83.108918][ T4299] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 83.121796][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 83.132340][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.140990][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 83.149587][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.158733][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 83.167554][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.176772][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 83.185344][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 83.193978][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.203151][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 83.313494][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 83.321427][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 83.334925][ T4299] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.351378][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 83.360086][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 83.379488][ T4299] device veth0_vlan entered promiscuous mode [ 83.388063][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 83.397109][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 83.406109][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 83.414088][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 83.426025][ T4299] device veth1_vlan entered promiscuous mode [ 83.453762][ T4299] device veth0_macvtap entered promiscuous mode [ 83.462249][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 83.470941][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 83.479108][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 83.489774][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 83.501916][ T4299] device veth1_macvtap entered promiscuous mode [ 83.511024][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 83.519911][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 83.536182][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 83.544472][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 83.555050][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 83.567681][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 83.576328][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 83.586320][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 83.597955][ T4299] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.608085][ T4299] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.617745][ T4299] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.630425][ T4299] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 83.694850][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.711021][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.719577][ T3013] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 83.742471][ T3013] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 83.750986][ T3013] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 83.760488][ T1183] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 83.770696][ T1109] Bluetooth: hci0: command 0x040f tx timeout [ 83.905190][ T4319] [ 83.907564][ T4319] ====================================================== [ 83.914593][ T4319] WARNING: possible circular locking dependency detected [ 83.921630][ T4319] 5.15.189-syzkaller #0 Not tainted [ 83.926840][ T4319] ------------------------------------------------------ [ 83.933861][ T4319] syz.0.17/4319 is trying to acquire lock: [ 83.939668][ T4319] ffff888025190c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 83.950745][ T4319] [ 83.950745][ T4319] but task is already holding lock: [ 83.958111][ T4319] ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 83.967804][ T4319] [ 83.967804][ T4319] which lock already depends on the new lock. [ 83.967804][ T4319] [ 83.978220][ T4319] [ 83.978220][ T4319] the existing dependency chain (in reverse order) is: [ 83.987243][ T4319] [ 83.987243][ T4319] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 83.995260][ T4319] __mutex_lock_common+0x1eb/0x2390 [ 84.001036][ T4319] mutex_lock_nested+0x17/0x20 [ 84.006336][ T4319] rfkill_register+0x33/0x8a0 [ 84.011551][ T4319] hci_register_dev+0x452/0x970 [ 84.016943][ T4319] vhci_create_device+0x32c/0x5c0 [ 84.022519][ T4319] vhci_write+0x391/0x450 [ 84.027391][ T4319] vfs_write+0x712/0xd00 [ 84.032165][ T4319] ksys_write+0x14d/0x250 [ 84.037024][ T4319] do_syscall_64+0x4c/0xa0 [ 84.041972][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.048406][ T4319] [ 84.048406][ T4319] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 84.056244][ T4319] __mutex_lock_common+0x1eb/0x2390 [ 84.061998][ T4319] mutex_lock_nested+0x17/0x20 [ 84.067310][ T4319] vhci_send_frame+0x88/0x100 [ 84.072530][ T4319] hci_send_frame+0x1a9/0x2e0 [ 84.077747][ T4319] hci_tx_work+0x9f9/0x1710 [ 84.082786][ T4319] process_one_work+0x863/0x1000 [ 84.088258][ T4319] worker_thread+0xaa8/0x12a0 [ 84.093469][ T4319] kthread+0x436/0x520 [ 84.098066][ T4319] ret_from_fork+0x1f/0x30 [ 84.103014][ T4319] [ 84.103014][ T4319] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 84.112240][ T4319] __flush_work+0xdd/0x1b0 [ 84.117206][ T4319] hci_dev_do_close+0x1e7/0x1030 [ 84.122688][ T4319] hci_unregister_dev+0x2d7/0x580 [ 84.128272][ T4319] vhci_release+0x73/0xc0 [ 84.133154][ T4319] __fput+0x234/0x930 [ 84.137676][ T4319] task_work_run+0x125/0x1a0 [ 84.142809][ T4319] do_exit+0x61e/0x20a0 [ 84.147513][ T4319] do_group_exit+0x12e/0x300 [ 84.152660][ T4319] get_signal+0x6ca/0x12c0 [ 84.157617][ T4319] arch_do_signal_or_restart+0xc1/0x1300 [ 84.163795][ T4319] exit_to_user_mode_loop+0x9e/0x130 [ 84.169724][ T4319] exit_to_user_mode_prepare+0xb1/0x140 [ 84.175905][ T4319] syscall_exit_to_user_mode+0x16/0x40 [ 84.181902][ T4319] do_syscall_64+0x58/0xa0 [ 84.187198][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.193617][ T4319] [ 84.193617][ T4319] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 84.201265][ T4319] __mutex_lock_common+0x1eb/0x2390 [ 84.206986][ T4319] mutex_lock_nested+0x17/0x20 [ 84.212271][ T4319] bg_scan_update+0x44/0x3b0 [ 84.217381][ T4319] process_one_work+0x863/0x1000 [ 84.222838][ T4319] worker_thread+0xaa8/0x12a0 [ 84.228037][ T4319] kthread+0x436/0x520 [ 84.232626][ T4319] ret_from_fork+0x1f/0x30 [ 84.237566][ T4319] [ 84.237566][ T4319] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 84.247381][ T4319] __lock_acquire+0x2c33/0x7c60 [ 84.252755][ T4319] lock_acquire+0x197/0x3f0 [ 84.257781][ T4319] __flush_work+0xdd/0x1b0 [ 84.262714][ T4319] __cancel_work_timer+0x3ac/0x520 [ 84.268348][ T4319] hci_request_cancel_all+0xcc/0x300 [ 84.274175][ T4319] hci_dev_do_close+0x4e/0x1030 [ 84.279548][ T4319] hci_rfkill_set_block+0x10a/0x190 [ 84.285268][ T4319] rfkill_set_block+0x1c6/0x420 [ 84.290639][ T4319] rfkill_fop_write+0x458/0x560 [ 84.296009][ T4319] vfs_write+0x300/0xd00 [ 84.300770][ T4319] ksys_write+0x14d/0x250 [ 84.305620][ T4319] do_syscall_64+0x4c/0xa0 [ 84.310557][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.317071][ T4319] [ 84.317071][ T4319] other info that might help us debug this: [ 84.317071][ T4319] [ 84.327327][ T4319] Chain exists of: [ 84.327327][ T4319] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 84.327327][ T4319] [ 84.343066][ T4319] Possible unsafe locking scenario: [ 84.343066][ T4319] [ 84.350519][ T4319] CPU0 CPU1 [ 84.355888][ T4319] ---- ---- [ 84.361247][ T4319] lock(rfkill_global_mutex); [ 84.366011][ T4319] lock(&data->open_mutex); [ 84.373117][ T4319] lock(rfkill_global_mutex); [ 84.380492][ T4319] lock((work_completion)(&hdev->bg_scan_update)); [ 84.387078][ T4319] [ 84.387078][ T4319] *** DEADLOCK *** [ 84.387078][ T4319] [ 84.395329][ T4319] 1 lock held by syz.0.17/4319: [ 84.400186][ T4319] #0: ffffffff8d4be228 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 84.410295][ T4319] [ 84.410295][ T4319] stack backtrace: [ 84.416192][ T4319] CPU: 1 PID: 4319 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0 [ 84.424168][ T4319] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 84.434237][ T4319] Call Trace: [ 84.437516][ T4319] [ 84.440448][ T4319] dump_stack_lvl+0x168/0x230 [ 84.445218][ T4319] ? load_image+0x3b0/0x3b0 [ 84.449723][ T4319] ? show_regs_print_info+0x20/0x20 [ 84.454927][ T4319] ? print_circular_bug+0x12b/0x1a0 [ 84.460125][ T4319] check_noncircular+0x274/0x310 [ 84.465062][ T4319] ? add_chain_block+0x940/0x940 [ 84.469999][ T4319] ? lockdep_lock+0xdc/0x1e0 [ 84.474594][ T4319] ? __lock_acquire+0x12d9/0x7c60 [ 84.479626][ T4319] ? lockdep_lock+0x1e0/0x1e0 [ 84.484395][ T4319] ? mark_lock+0x94/0x320 [ 84.488730][ T4319] __lock_acquire+0x2c33/0x7c60 [ 84.493716][ T4319] ? rcu_lock_release+0x5/0x20 [ 84.498483][ T4319] ? verify_lock_unused+0x140/0x140 [ 84.503714][ T4319] lock_acquire+0x197/0x3f0 [ 84.508217][ T4319] ? __flush_work+0xc1/0x1b0 [ 84.512810][ T4319] ? __lock_acquire+0x7c60/0x7c60 [ 84.517856][ T4319] ? read_lock_is_recursive+0x10/0x10 [ 84.523251][ T4319] ? start_flush_work+0x776/0x820 [ 84.528641][ T4319] __flush_work+0xdd/0x1b0 [ 84.533061][ T4319] ? __flush_work+0xc1/0x1b0 [ 84.537650][ T4319] ? flush_work+0x20/0x20 [ 84.541992][ T4319] ? try_to_grab_pending+0xf3/0x7e0 [ 84.547389][ T4319] ? lockdep_hardirqs_off+0x70/0x100 [ 84.552703][ T4319] ? mark_lock+0x94/0x320 [ 84.557034][ T4319] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 84.563014][ T4319] ? lock_chain_count+0x20/0x20 [ 84.567867][ T4319] ? mark_lock+0x94/0x320 [ 84.572200][ T4319] ? __cancel_work_timer+0x331/0x520 [ 84.577485][ T4319] __cancel_work_timer+0x3ac/0x520 [ 84.582757][ T4319] ? cancel_work_sync+0x20/0x20 [ 84.587627][ T4319] ? __cancel_work+0x1f4/0x2d0 [ 84.592402][ T4319] ? lockdep_hardirqs_on+0x94/0x140 [ 84.597671][ T4319] ? __cancel_work+0x26f/0x2d0 [ 84.602440][ T4319] ? cancel_work+0x20/0x20 [ 84.606866][ T4319] ? lock_chain_count+0x20/0x20 [ 84.611725][ T4319] hci_request_cancel_all+0xcc/0x300 [ 84.617121][ T4319] hci_dev_do_close+0x4e/0x1030 [ 84.621976][ T4319] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 84.627875][ T4319] ? _raw_spin_unlock+0x40/0x40 [ 84.632740][ T4319] hci_rfkill_set_block+0x10a/0x190 [ 84.637938][ T4319] ? rcu_lock_release+0x20/0x20 [ 84.642789][ T4319] rfkill_set_block+0x1c6/0x420 [ 84.647644][ T4319] rfkill_fop_write+0x458/0x560 [ 84.652498][ T4319] ? verify_lock_unused+0x140/0x140 [ 84.657704][ T4319] ? rfkill_fop_read+0x4b0/0x4b0 [ 84.662640][ T4319] ? common_file_perm+0x150/0x1c0 [ 84.667668][ T4319] ? fsnotify_perm+0x5d/0x560 [ 84.672367][ T4319] ? security_file_permission+0x75/0xa0 [ 84.677920][ T4319] ? rfkill_fop_read+0x4b0/0x4b0 [ 84.682859][ T4319] vfs_write+0x300/0xd00 [ 84.687103][ T4319] ? file_end_write+0x250/0x250 [ 84.691956][ T4319] ? __context_tracking_exit+0x4c/0x80 [ 84.697417][ T4319] ? __lock_acquire+0x7c60/0x7c60 [ 84.702443][ T4319] ? __fdget_pos+0x1e2/0x370 [ 84.707034][ T4319] ksys_write+0x14d/0x250 [ 84.711362][ T4319] ? __ia32_sys_read+0x80/0x80 [ 84.716130][ T4319] ? lockdep_hardirqs_on+0x94/0x140 [ 84.721334][ T4319] do_syscall_64+0x4c/0xa0 [ 84.725751][ T4319] ? clear_bhb_loop+0x30/0x80 [ 84.730427][ T4319] ? clear_bhb_loop+0x30/0x80 [ 84.735100][ T4319] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 84.741009][ T4319] RIP: 0033:0x7f3c8568db69 [ 84.745428][ T4319] 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 [ 84.765031][ T4319] RSP: 002b:00007ffeef26a538 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.773447][ T4319] RAX: ffffffffffffffda RBX: 00007f3c858b4fa0 RCX: 00007f3c8568db69 [ 84.781421][ T4319] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 84.789399][ T4319] RBP: 00007f3c85710df1 R08: 0000000000000000 R09: 0000000000000000 [ 84.797368][ T4319] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.805345][ T4319] R13: 00007f3c858b4fa0 R14: 00007f3c858b4fa0 R15: 0000000000000003 [ 84.813328][ T4319]