Warning: Permanently added '10.128.0.76' (ED25519) to the list of known hosts. 2026/05/03 12:15:44 parsed 1 programs [ 69.471424][ T4201] cgroup: Unknown subsys name 'net' [ 69.627427][ T4201] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.115447][ T4201] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.375005][ T1420] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.381729][ T1420] ieee802154 phy1 wpan1: encryption failed: -22 [ 73.386888][ T4236] chnl_net:caif_netlink_parms(): no params data found [ 73.455806][ T4236] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.464878][ T4236] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.473555][ T4236] device bridge_slave_0 entered promiscuous mode [ 73.483650][ T4236] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.492125][ T4236] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.500974][ T4236] device bridge_slave_1 entered promiscuous mode [ 73.532948][ T4236] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.546582][ T4236] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.578034][ T4236] team0: Port device team_slave_0 added [ 73.586135][ T4236] team0: Port device team_slave_1 added [ 73.610901][ T4236] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.617906][ T4236] 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. [ 73.644443][ T4236] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.657890][ T4236] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.665105][ T4236] 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. [ 73.691668][ T4236] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.730676][ T4236] device hsr_slave_0 entered promiscuous mode [ 73.738291][ T4236] device hsr_slave_1 entered promiscuous mode [ 73.885088][ T4236] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.897171][ T4236] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.910439][ T4236] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.923344][ T4236] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.959035][ T4236] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.966389][ T4236] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.974615][ T4236] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.981771][ T4236] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.049651][ T4236] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.069501][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.083615][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.092929][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.109616][ T4236] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.122322][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.132045][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.139149][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.164592][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.176830][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.183990][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.195181][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.217694][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.228085][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.237308][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.252919][ T4236] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.265830][ T4236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.277123][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.405092][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.414319][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.429325][ T4236] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.460405][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.470046][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.507011][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.517684][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.531426][ T4236] device veth0_vlan entered promiscuous mode [ 74.539596][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.548776][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.562797][ T4236] device veth1_vlan entered promiscuous mode [ 74.594505][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.606213][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.615679][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 74.624760][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.636196][ T4236] device veth0_macvtap entered promiscuous mode [ 74.648029][ T4236] device veth1_macvtap entered promiscuous mode [ 74.666941][ T4236] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.675922][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.685997][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 74.694500][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.705061][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.717154][ T4236] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.727126][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.738594][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.751691][ T4236] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.761298][ T4236] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.770042][ T4236] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.780013][ T4236] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.942865][ T4236] syz-executor (4236) used greatest stack depth: 20432 bytes left [ 75.012263][ T157] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.050675][ T4245] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.058727][ T4245] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.073671][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.094793][ T4245] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.104132][ T4245] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.112494][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/05/03 12:15:54 executed programs: 0 [ 76.701322][ T4292] chnl_net:caif_netlink_parms(): no params data found [ 76.747789][ T4292] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.755023][ T4292] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.763347][ T4292] device bridge_slave_0 entered promiscuous mode [ 76.772552][ T4292] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.779723][ T4292] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.788257][ T4292] device bridge_slave_1 entered promiscuous mode [ 76.811500][ T4292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.823170][ T4292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.846023][ T4292] team0: Port device team_slave_0 added [ 76.853655][ T4292] team0: Port device team_slave_1 added [ 76.871826][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.878806][ T4292] 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. [ 76.905094][ T4292] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.917766][ T4292] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.925407][ T4292] 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. [ 76.951425][ T4292] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.986111][ T4292] device hsr_slave_0 entered promiscuous mode [ 76.993577][ T4292] device hsr_slave_1 entered promiscuous mode [ 77.000309][ T4292] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 77.008360][ T4292] Cannot create hsr debugfs directory [ 77.587965][ T157] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.651343][ T2307] Bluetooth: hci0: command 0x0409 tx timeout [ 80.037475][ T157] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.098497][ T157] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.731445][ T4313] Bluetooth: hci0: command 0x041b tx timeout [ 80.997631][ T4292] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.010677][ T4292] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.027239][ T4292] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.036959][ T4292] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.104985][ T4292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.118955][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.127670][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.138656][ T4292] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.166223][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.176061][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.185016][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.192151][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.201074][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.229721][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.238675][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.247314][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.254436][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.265860][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.295440][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.309328][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.319175][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.328134][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.339636][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.348980][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.372201][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.381034][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.392606][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.402885][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.415055][ T4292] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.431314][ T157] device hsr_slave_0 left promiscuous mode [ 81.438065][ T157] device hsr_slave_1 left promiscuous mode [ 81.445261][ T157] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.453410][ T157] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.463430][ T157] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.471613][ T157] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.479931][ T157] device bridge_slave_1 left promiscuous mode [ 81.487901][ T157] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.503867][ T157] device bridge_slave_0 left promiscuous mode [ 81.510431][ T157] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.531899][ T157] device veth1_macvtap left promiscuous mode [ 81.538409][ T157] device veth0_macvtap left promiscuous mode [ 81.545172][ T157] device veth1_vlan left promiscuous mode [ 81.551839][ T157] device veth0_vlan left promiscuous mode [ 81.723512][ T157] team0 (unregistering): Port device team_slave_1 removed [ 81.737697][ T157] team0 (unregistering): Port device team_slave_0 removed [ 81.751781][ T157] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.767770][ T157] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 81.836560][ T157] bond0 (unregistering): Released all slaves [ 81.995850][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.004165][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.017707][ T4292] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.046624][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.056018][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.084392][ T4292] device veth0_vlan entered promiscuous mode [ 82.092986][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.108148][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.120425][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.128880][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.140300][ T4292] device veth1_vlan entered promiscuous mode [ 82.165276][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.175359][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.187873][ T4292] device veth0_macvtap entered promiscuous mode [ 82.197202][ T4292] device veth1_macvtap entered promiscuous mode [ 82.215217][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.223186][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.231861][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.239879][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.249435][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.263492][ T4292] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.272336][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.281695][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.295587][ T4292] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.304822][ T4292] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.314576][ T4292] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.324122][ T4292] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.396029][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.409602][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.421373][ T4256] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.448214][ T4256] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.456414][ T4256] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.464871][ T4245] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.687809][ T4343] [ 82.690195][ T4343] ====================================================== [ 82.697238][ T4343] WARNING: possible circular locking dependency detected [ 82.704511][ T4343] syzkaller #0 Not tainted [ 82.708954][ T4343] ------------------------------------------------------ [ 82.715998][ T4343] syz.0.17/4343 is trying to acquire lock: [ 82.721828][ T4343] ffff88807bfe4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.732938][ T4343] [ 82.732938][ T4343] but task is already holding lock: [ 82.740430][ T4343] ffffffff8d6c5da8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 82.750316][ T4343] [ 82.750316][ T4343] which lock already depends on the new lock. [ 82.750316][ T4343] [ 82.760842][ T4343] [ 82.760842][ T4343] the existing dependency chain (in reverse order) is: [ 82.769890][ T4343] [ 82.769890][ T4343] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.778015][ T4343] __mutex_lock_common+0x1e3/0x2400 [ 82.783786][ T4343] mutex_lock_nested+0x17/0x20 [ 82.789110][ T4343] rfkill_register+0x33/0x980 [ 82.794355][ T4343] hci_register_dev+0x452/0x970 [ 82.800202][ T4343] vhci_create_device+0x32c/0x5c0 [ 82.805871][ T4343] vhci_write+0x391/0x450 [ 82.810778][ T4313] Bluetooth: hci0: command 0x040f tx timeout [ 82.810771][ T4343] vfs_write+0x745/0xd60 [ 82.810796][ T4343] ksys_write+0x152/0x260 [ 82.826427][ T4343] do_syscall_64+0x4c/0xa0 [ 82.831402][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.837859][ T4343] [ 82.837859][ T4343] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.845714][ T4343] __mutex_lock_common+0x1e3/0x2400 [ 82.851480][ T4343] mutex_lock_nested+0x17/0x20 [ 82.856898][ T4343] vhci_send_frame+0x88/0x100 [ 82.862136][ T4343] hci_send_frame+0x1a9/0x2e0 [ 82.867378][ T4343] hci_tx_work+0x9f9/0x1710 [ 82.872469][ T4343] process_one_work+0x85f/0x1010 [ 82.878402][ T4343] worker_thread+0xaa6/0x1290 [ 82.883645][ T4343] kthread+0x436/0x520 [ 82.888292][ T4343] ret_from_fork+0x1f/0x30 [ 82.893361][ T4343] [ 82.893361][ T4343] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.902616][ T4343] __flush_work+0x116/0x210 [ 82.907714][ T4343] hci_dev_do_close+0x1e7/0x1030 [ 82.913302][ T4343] hci_unregister_dev+0x2d7/0x580 [ 82.918896][ T4343] vhci_release+0x73/0xc0 [ 82.923781][ T4343] __fput+0x234/0x930 [ 82.928315][ T4343] task_work_run+0x125/0x1a0 [ 82.933474][ T4343] do_exit+0x626/0x20c0 [ 82.938187][ T4343] do_group_exit+0x12e/0x300 [ 82.943344][ T4343] get_signal+0x6ca/0x12c0 [ 82.948334][ T4343] arch_do_signal_or_restart+0xe7/0x12c0 [ 82.954532][ T4343] exit_to_user_mode_loop+0x9e/0x130 [ 82.960377][ T4343] exit_to_user_mode_prepare+0xee/0x180 [ 82.966484][ T4343] syscall_exit_to_user_mode+0x16/0x40 [ 82.972674][ T4343] do_syscall_64+0x58/0xa0 [ 82.977655][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.984109][ T4343] [ 82.984109][ T4343] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.991803][ T4343] __mutex_lock_common+0x1e3/0x2400 [ 82.997572][ T4343] mutex_lock_nested+0x17/0x20 [ 83.002899][ T4343] bg_scan_update+0x44/0x3b0 [ 83.008064][ T4343] process_one_work+0x85f/0x1010 [ 83.013565][ T4343] worker_thread+0xaa6/0x1290 [ 83.018801][ T4343] kthread+0x436/0x520 [ 83.023545][ T4343] ret_from_fork+0x1f/0x30 [ 83.028521][ T4343] [ 83.028521][ T4343] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.038420][ T4343] __lock_acquire+0x2c42/0x7d10 [ 83.043870][ T4343] lock_acquire+0x19e/0x400 [ 83.048942][ T4343] __flush_work+0x116/0x210 [ 83.054000][ T4343] __cancel_work_timer+0x3f4/0x560 [ 83.059682][ T4343] hci_request_cancel_all+0xcc/0x300 [ 83.065525][ T4343] hci_dev_do_close+0x4e/0x1030 [ 83.070936][ T4343] hci_rfkill_set_block+0x10a/0x190 [ 83.076736][ T4343] rfkill_set_block+0x1c9/0x3d0 [ 83.082152][ T4343] rfkill_fop_write+0x452/0x560 [ 83.087559][ T4343] vfs_write+0x30b/0xd60 [ 83.092443][ T4343] ksys_write+0x152/0x260 [ 83.097335][ T4343] do_syscall_64+0x4c/0xa0 [ 83.102320][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.108777][ T4343] [ 83.108777][ T4343] other info that might help us debug this: [ 83.108777][ T4343] [ 83.119032][ T4343] Chain exists of: [ 83.119032][ T4343] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.119032][ T4343] [ 83.134801][ T4343] Possible unsafe locking scenario: [ 83.134801][ T4343] [ 83.142296][ T4343] CPU0 CPU1 [ 83.147708][ T4343] ---- ---- [ 83.153104][ T4343] lock(rfkill_global_mutex); [ 83.157910][ T4343] lock(&data->open_mutex); [ 83.165060][ T4343] lock(rfkill_global_mutex); [ 83.172380][ T4343] lock((work_completion)(&hdev->bg_scan_update)); [ 83.179001][ T4343] [ 83.179001][ T4343] *** DEADLOCK *** [ 83.179001][ T4343] [ 83.187169][ T4343] 1 lock held by syz.0.17/4343: [ 83.192042][ T4343] #0: ffffffff8d6c5da8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x18b/0x560 [ 83.202169][ T4343] [ 83.202169][ T4343] stack backtrace: [ 83.208101][ T4343] CPU: 1 PID: 4343 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.215477][ T4343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 83.225691][ T4343] Call Trace: [ 83.229168][ T4343] [ 83.232172][ T4343] dump_stack_lvl+0x188/0x250 [ 83.236920][ T4343] ? load_image+0x400/0x400 [ 83.241455][ T4343] ? show_regs_print_info+0x20/0x20 [ 83.246687][ T4343] ? print_circular_bug+0x12b/0x1a0 [ 83.251911][ T4343] check_noncircular+0x296/0x330 [ 83.256879][ T4343] ? look_up_lock_class+0x71/0x110 [ 83.262112][ T4343] ? add_chain_block+0x940/0x940 [ 83.267079][ T4343] ? lockdep_lock+0xf1/0x1f0 [ 83.271699][ T4343] ? __lock_acquire+0x12e8/0x7d10 [ 83.276859][ T4343] ? mark_lock+0x94/0x320 [ 83.281227][ T4343] __lock_acquire+0x2c42/0x7d10 [ 83.286138][ T4343] ? verify_lock_unused+0x140/0x140 [ 83.291408][ T4343] ? verify_lock_unused+0x140/0x140 [ 83.296674][ T4343] ? mark_lock+0x94/0x320 [ 83.301110][ T4343] lock_acquire+0x19e/0x400 [ 83.305685][ T4343] ? __flush_work+0xfa/0x210 [ 83.310572][ T4343] ? __lock_acquire+0x7d10/0x7d10 [ 83.315809][ T4343] ? read_lock_is_recursive+0x10/0x10 [ 83.321300][ T4343] ? start_flush_work+0x776/0x820 [ 83.326367][ T4343] __flush_work+0x116/0x210 [ 83.331038][ T4343] ? __flush_work+0xfa/0x210 [ 83.335750][ T4343] ? flush_work+0x20/0x20 [ 83.340106][ T4343] ? try_to_grab_pending+0xfa/0x7f0 [ 83.345337][ T4343] ? mark_lock+0x94/0x320 [ 83.349704][ T4343] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 83.355841][ T4343] ? lock_chain_count+0x20/0x20 [ 83.360731][ T4343] ? mark_lock+0x94/0x320 [ 83.365091][ T4343] ? __cancel_work_timer+0x36a/0x560 [ 83.370418][ T4343] __cancel_work_timer+0x3f4/0x560 [ 83.375569][ T4343] ? cancel_work_sync+0x20/0x20 [ 83.380478][ T4343] ? __cancel_work+0x1f9/0x2e0 [ 83.385309][ T4343] ? lockdep_hardirqs_on+0x94/0x140 [ 83.390544][ T4343] ? __cancel_work+0x27b/0x2e0 [ 83.395381][ T4343] ? cancel_work+0x20/0x20 [ 83.399821][ T4343] ? lock_chain_count+0x20/0x20 [ 83.404797][ T4343] hci_request_cancel_all+0xcc/0x300 [ 83.410115][ T4343] hci_dev_do_close+0x4e/0x1030 [ 83.415022][ T4343] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.420948][ T4343] ? _raw_spin_unlock+0x40/0x40 [ 83.425972][ T4343] hci_rfkill_set_block+0x10a/0x190 [ 83.431424][ T4343] ? rcu_lock_release+0x20/0x20 [ 83.436324][ T4343] rfkill_set_block+0x1c9/0x3d0 [ 83.441514][ T4343] rfkill_fop_write+0x452/0x560 [ 83.446423][ T4343] ? rfkill_fop_read+0x520/0x520 [ 83.451503][ T4343] ? common_file_perm+0x140/0x1c0 [ 83.456651][ T4343] ? fsnotify_perm+0x5d/0x560 [ 83.461369][ T4343] ? security_file_permission+0x75/0xa0 [ 83.466942][ T4343] ? rfkill_fop_read+0x520/0x520 [ 83.471915][ T4343] vfs_write+0x30b/0xd60 [ 83.476200][ T4343] ? file_end_write+0x250/0x250 [ 83.481125][ T4343] ? __context_tracking_exit+0x4c/0x80 [ 83.486644][ T4343] ? __lock_acquire+0x7d10/0x7d10 [ 83.491716][ T4343] ? __fdget_pos+0x1e2/0x370 [ 83.496349][ T4343] ksys_write+0x152/0x260 [ 83.500718][ T4343] ? __ia32_sys_read+0x80/0x80 [ 83.505572][ T4343] ? lockdep_hardirqs_on+0x94/0x140 [ 83.510813][ T4343] do_syscall_64+0x4c/0xa0 [ 83.515256][ T4343] ? clear_bhb_loop+0x30/0x80 [ 83.520000][ T4343] ? clear_bhb_loop+0x30/0x80 [ 83.524734][ T4343] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.530672][ T4343] RIP: 0033:0x7f0aeeee3dd9 [ 83.535736][ T4343] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 83.555642][ T4343] RSP: 002b:00007fff3a4fb8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.564104][ T4343] RAX: ffffffffffffffda RBX: 00007f0aef15cfa0 RCX: 00007f0aeeee3dd9 [ 83.572136][ T4343] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 83.580142][ T4343] RBP: 00007f0aeef79d69 R08: 0000000000000000 R09: 0000000000000000 [ 83.588174][ T4343] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.596266][ T4343] R13: 00007f0aef15cfac R14: 00007f0aef15cfa0 R15: 00007f0aef15cfa0 [ 83.604278][ T4343]