Warning: Permanently added '10.128.0.194' (ED25519) to the list of known hosts. 2025/11/01 13:53:42 parsed 1 programs syzkaller login: [ 66.006343][ T4188] cgroup: Unknown subsys name 'net' [ 66.155411][ T4188] cgroup: Unknown subsys name 'rlimit' [ 67.665212][ T4188] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.057967][ T4219] chnl_net:caif_netlink_parms(): no params data found [ 70.125972][ T4219] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.135153][ T4219] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.143559][ T4219] device bridge_slave_0 entered promiscuous mode [ 70.154838][ T4219] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.162060][ T4219] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.171735][ T4219] device bridge_slave_1 entered promiscuous mode [ 70.208355][ T4219] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.221856][ T4219] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.253434][ T4219] team0: Port device team_slave_0 added [ 70.262733][ T4219] team0: Port device team_slave_1 added [ 70.288037][ T4219] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.296526][ T4219] 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. [ 70.327109][ T4219] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.347298][ T4219] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.360729][ T4219] 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. [ 70.388582][ T4219] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.431343][ T4219] device hsr_slave_0 entered promiscuous mode [ 70.438288][ T4219] device hsr_slave_1 entered promiscuous mode [ 70.583122][ T4219] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.595075][ T4219] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.606989][ T4219] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.617283][ T4219] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.651153][ T4219] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.658518][ T4219] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.666481][ T4219] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.673621][ T4219] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.734383][ T4219] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.751491][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.764531][ T154] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.773361][ T154] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.789739][ T4219] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.802276][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.811936][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.819067][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.842428][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.853161][ T4235] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.860301][ T4235] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.881907][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.890993][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.904690][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.919970][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.935181][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.952039][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.964385][ T4219] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.076448][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.084617][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.099504][ T4219] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.127593][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.144072][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.176874][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.185496][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.196126][ T4219] device veth0_vlan entered promiscuous mode [ 71.215671][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.224604][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.237992][ T4219] device veth1_vlan entered promiscuous mode [ 71.265559][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.274167][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.282361][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.293995][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.294998][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.301773][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.319607][ T4219] device veth0_macvtap entered promiscuous mode [ 71.328698][ T4219] device veth1_macvtap entered promiscuous mode [ 71.343167][ T4219] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.350924][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.359143][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.367182][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.376162][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.390672][ T4219] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.398098][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.407095][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.430880][ T4219] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.440801][ T4219] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.450080][ T4219] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.458946][ T4219] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.572453][ T4219] syz-executor (4219) used greatest stack depth: 20608 bytes left [ 71.925696][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.948095][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.958194][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.967655][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.977687][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 71.986544][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 2025/11/01 13:53:51 executed programs: 0 [ 73.517444][ T4287] chnl_net:caif_netlink_parms(): no params data found [ 73.542105][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.589386][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.596505][ T4287] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.605138][ T4287] device bridge_slave_0 entered promiscuous mode [ 73.613538][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.621426][ T4287] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.629586][ T4287] device bridge_slave_1 entered promiscuous mode [ 73.651482][ T4287] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.662644][ T4287] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.686184][ T4287] team0: Port device team_slave_0 added [ 73.694628][ T4287] team0: Port device team_slave_1 added [ 73.714463][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.721528][ T4287] 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. [ 73.748119][ T4287] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.760321][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.767286][ T4287] 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. [ 73.793987][ T4287] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.825891][ T4287] device hsr_slave_0 entered promiscuous mode [ 73.833278][ T4287] device hsr_slave_1 entered promiscuous mode [ 73.840493][ T4287] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.848329][ T4287] Cannot create hsr debugfs directory [ 75.449750][ T4245] Bluetooth: hci0: command 0x0409 tx timeout [ 76.746115][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.785453][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.856820][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.528986][ T2239] Bluetooth: hci0: command 0x041b tx timeout [ 77.635068][ T4287] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.645653][ T4287] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.655250][ T4287] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.664600][ T4287] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.746697][ T4287] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.759153][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.766956][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.780979][ T4287] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.815116][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.823908][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.832698][ T4235] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.839828][ T4235] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.848136][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.862374][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.871107][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.879629][ T4235] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.886677][ T4235] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.898584][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.935296][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.951921][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.960851][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.970469][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.980514][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.992384][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.000328][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 78.008829][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.044864][ T4287] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.056645][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.064887][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 78.074088][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.180801][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.188336][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.201172][ T4287] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.247944][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.256979][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.274840][ T4287] device veth0_vlan entered promiscuous mode [ 78.283159][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.291659][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.300750][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.308629][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.321270][ T4287] device veth1_vlan entered promiscuous mode [ 78.365358][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.374002][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.383159][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.392198][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.404175][ T4287] device veth0_macvtap entered promiscuous mode [ 78.414626][ T4287] device veth1_macvtap entered promiscuous mode [ 78.447400][ T4287] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 [ 78.458566][ T4287] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.471340][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.481573][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.490544][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.498541][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.507842][ T4235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.519692][ T4287] batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 [ 78.530780][ T4287] batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! [ 78.543018][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.551390][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.560744][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.574498][ T4287] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.583907][ T4287] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.592670][ T4287] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.601578][ T4287] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.671822][ T4264] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.683189][ T4264] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.696876][ T1180] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.735043][ T1180] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.743719][ T1180] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.754227][ T4264] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.874639][ T4347] [ 78.877015][ T4347] ====================================================== [ 78.884045][ T4347] WARNING: possible circular locking dependency detected [ 78.891084][ T4347] syzkaller #0 Not tainted [ 78.895509][ T4347] ------------------------------------------------------ [ 78.902544][ T4347] syz.0.17/4347 is trying to acquire lock: [ 78.908362][ T4347] ffff88805d3f4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 78.919575][ T4347] [ 78.919575][ T4347] but task is already holding lock: [ 78.926950][ T4347] ffffffff8d4c0f28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 78.936656][ T4347] [ 78.936656][ T4347] which lock already depends on the new lock. [ 78.936656][ T4347] [ 78.947077][ T4347] [ 78.947077][ T4347] the existing dependency chain (in reverse order) is: [ 78.956155][ T4347] [ 78.956155][ T4347] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.964174][ T4347] __mutex_lock_common+0x1eb/0x2390 [ 78.969961][ T4347] mutex_lock_nested+0x17/0x20 [ 78.975277][ T4347] rfkill_register+0x33/0x8a0 [ 78.980507][ T4347] hci_register_dev+0x452/0x970 [ 78.985946][ T4347] vhci_create_device+0x32c/0x5c0 [ 78.991514][ T4347] vhci_write+0x391/0x450 [ 78.996384][ T4347] vfs_write+0x712/0xd00 [ 79.001194][ T4347] ksys_write+0x14d/0x250 [ 79.006072][ T4347] do_syscall_64+0x4c/0xa0 [ 79.011027][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.017458][ T4347] [ 79.017458][ T4347] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 79.025291][ T4347] __mutex_lock_common+0x1eb/0x2390 [ 79.031035][ T4347] mutex_lock_nested+0x17/0x20 [ 79.036432][ T4347] vhci_send_frame+0x88/0x100 [ 79.041651][ T4347] hci_send_frame+0x1a9/0x2e0 [ 79.046876][ T4347] hci_tx_work+0x9f9/0x1710 [ 79.051921][ T4347] process_one_work+0x863/0x1000 [ 79.057402][ T4347] worker_thread+0xaa8/0x12a0 [ 79.062618][ T4347] kthread+0x436/0x520 [ 79.067230][ T4347] ret_from_fork+0x1f/0x30 [ 79.072187][ T4347] [ 79.072187][ T4347] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 79.081418][ T4347] __flush_work+0xdd/0x1b0 [ 79.086383][ T4347] hci_dev_do_close+0x1e7/0x1030 [ 79.091863][ T4347] hci_unregister_dev+0x2d7/0x580 [ 79.097432][ T4347] vhci_release+0x73/0xc0 [ 79.102306][ T4347] __fput+0x234/0x930 [ 79.106830][ T4347] task_work_run+0x125/0x1a0 [ 79.112063][ T4347] do_exit+0x61e/0x20a0 [ 79.116769][ T4347] do_group_exit+0x12e/0x300 [ 79.121903][ T4347] get_signal+0x6ca/0x12c0 [ 79.126859][ T4347] arch_do_signal_or_restart+0xc1/0x1300 [ 79.133036][ T4347] exit_to_user_mode_loop+0x9e/0x130 [ 79.138876][ T4347] exit_to_user_mode_prepare+0xee/0x180 [ 79.144963][ T4347] syscall_exit_to_user_mode+0x16/0x40 [ 79.150961][ T4347] do_syscall_64+0x58/0xa0 [ 79.155922][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.162356][ T4347] [ 79.162356][ T4347] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 79.170027][ T4347] __mutex_lock_common+0x1eb/0x2390 [ 79.175948][ T4347] mutex_lock_nested+0x17/0x20 [ 79.181271][ T4347] bg_scan_update+0x44/0x3b0 [ 79.186407][ T4347] process_one_work+0x863/0x1000 [ 79.191907][ T4347] worker_thread+0xaa8/0x12a0 [ 79.197132][ T4347] kthread+0x436/0x520 [ 79.201749][ T4347] ret_from_fork+0x1f/0x30 [ 79.206712][ T4347] [ 79.206712][ T4347] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 79.216552][ T4347] __lock_acquire+0x2c33/0x7c60 [ 79.221953][ T4347] lock_acquire+0x197/0x3f0 [ 79.227176][ T4347] __flush_work+0xdd/0x1b0 [ 79.232131][ T4347] __cancel_work_timer+0x3ac/0x520 [ 79.237784][ T4347] hci_request_cancel_all+0xcc/0x300 [ 79.243735][ T4347] hci_dev_do_close+0x4e/0x1030 [ 79.249137][ T4347] hci_rfkill_set_block+0x10a/0x190 [ 79.254880][ T4347] rfkill_set_block+0x1c6/0x420 [ 79.260280][ T4347] rfkill_fop_write+0x458/0x560 [ 79.265673][ T4347] vfs_write+0x300/0xd00 [ 79.270459][ T4347] ksys_write+0x14d/0x250 [ 79.275331][ T4347] do_syscall_64+0x4c/0xa0 [ 79.280288][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.286726][ T4347] [ 79.286726][ T4347] other info that might help us debug this: [ 79.286726][ T4347] [ 79.296966][ T4347] Chain exists of: [ 79.296966][ T4347] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 79.296966][ T4347] [ 79.312713][ T4347] Possible unsafe locking scenario: [ 79.312713][ T4347] [ 79.320176][ T4347] CPU0 CPU1 [ 79.325555][ T4347] ---- ---- [ 79.330936][ T4347] lock(rfkill_global_mutex); [ 79.335718][ T4347] lock(&data->open_mutex); [ 79.342942][ T4347] lock(rfkill_global_mutex); [ 79.350246][ T4347] lock((work_completion)(&hdev->bg_scan_update)); [ 79.356857][ T4347] [ 79.356857][ T4347] *** DEADLOCK *** [ 79.356857][ T4347] [ 79.365011][ T4347] 1 lock held by syz.0.17/4347: [ 79.369873][ T4347] #0: ffffffff8d4c0f28 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 79.380020][ T4347] [ 79.380020][ T4347] stack backtrace: [ 79.385938][ T4347] CPU: 0 PID: 4347 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.393154][ T4347] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 79.403244][ T4347] Call Trace: [ 79.406538][ T4347] [ 79.409486][ T4347] dump_stack_lvl+0x168/0x230 [ 79.414189][ T4347] ? load_image+0x3b0/0x3b0 [ 79.418721][ T4347] ? show_regs_print_info+0x20/0x20 [ 79.423947][ T4347] ? print_circular_bug+0x12b/0x1a0 [ 79.429170][ T4347] check_noncircular+0x274/0x310 [ 79.434132][ T4347] ? add_chain_block+0x940/0x940 [ 79.439087][ T4347] ? lockdep_lock+0xdc/0x1e0 [ 79.443707][ T4347] ? __lock_acquire+0x12d9/0x7c60 [ 79.448755][ T4347] ? lockdep_lock+0x1e0/0x1e0 [ 79.453451][ T4347] ? mark_lock+0x94/0x320 [ 79.457802][ T4347] __lock_acquire+0x2c33/0x7c60 [ 79.462685][ T4347] ? verify_lock_unused+0x140/0x140 [ 79.467912][ T4347] ? verify_lock_unused+0x140/0x140 [ 79.473147][ T4347] lock_acquire+0x197/0x3f0 [ 79.477689][ T4347] ? __flush_work+0xc1/0x1b0 [ 79.482300][ T4347] ? __lock_acquire+0x7c60/0x7c60 [ 79.487355][ T4347] ? read_lock_is_recursive+0x10/0x10 [ 79.492749][ T4347] ? start_flush_work+0x776/0x820 [ 79.497805][ T4347] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 79.503723][ T4347] ? _raw_spin_unlock+0x40/0x40 [ 79.508595][ T4347] __flush_work+0xdd/0x1b0 [ 79.513032][ T4347] ? __flush_work+0xc1/0x1b0 [ 79.517673][ T4347] ? flush_work+0x20/0x20 [ 79.522030][ T4347] ? try_to_grab_pending+0xf3/0x7e0 [ 79.527263][ T4347] ? lockdep_hardirqs_off+0x70/0x100 [ 79.532574][ T4347] ? mark_lock+0x94/0x320 [ 79.536943][ T4347] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 79.542954][ T4347] ? lock_chain_count+0x20/0x20 [ 79.547837][ T4347] ? mark_lock+0x94/0x320 [ 79.552331][ T4347] ? __cancel_work_timer+0x331/0x520 [ 79.557636][ T4347] __cancel_work_timer+0x3ac/0x520 [ 79.562775][ T4347] ? cancel_work_sync+0x20/0x20 [ 79.567649][ T4347] ? __cancel_work+0x1f4/0x2d0 [ 79.572436][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 79.577655][ T4347] ? __cancel_work+0x26f/0x2d0 [ 79.582433][ T4347] ? cancel_work+0x20/0x20 [ 79.586869][ T4347] ? lock_chain_count+0x20/0x20 [ 79.591750][ T4347] hci_request_cancel_all+0xcc/0x300 [ 79.597060][ T4347] hci_dev_do_close+0x4e/0x1030 [ 79.601939][ T4347] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 79.607857][ T4347] ? _raw_spin_unlock+0x40/0x40 [ 79.611365][ T4247] Bluetooth: hci0: command 0x040f tx timeout [ 79.612725][ T4347] hci_rfkill_set_block+0x10a/0x190 [ 79.623904][ T4347] ? rcu_lock_release+0x20/0x20 [ 79.628780][ T4347] rfkill_set_block+0x1c6/0x420 [ 79.633655][ T4347] rfkill_fop_write+0x458/0x560 [ 79.638541][ T4347] ? verify_lock_unused+0x140/0x140 [ 79.643781][ T4347] ? rfkill_fop_read+0x4b0/0x4b0 [ 79.648743][ T4347] ? common_file_perm+0x130/0x1c0 [ 79.653787][ T4347] ? fsnotify_perm+0x5d/0x560 [ 79.658484][ T4347] ? security_file_permission+0x75/0xa0 [ 79.664053][ T4347] ? rfkill_fop_read+0x4b0/0x4b0 [ 79.669031][ T4347] vfs_write+0x300/0xd00 [ 79.673296][ T4347] ? file_end_write+0x250/0x250 [ 79.678166][ T4347] ? __context_tracking_exit+0x4c/0x80 [ 79.683730][ T4347] ? __lock_acquire+0x7c60/0x7c60 [ 79.688787][ T4347] ? __fdget_pos+0x1e2/0x370 [ 79.693395][ T4347] ksys_write+0x14d/0x250 [ 79.697747][ T4347] ? __ia32_sys_read+0x80/0x80 [ 79.702535][ T4347] ? lockdep_hardirqs_on+0x94/0x140 [ 79.707857][ T4347] do_syscall_64+0x4c/0xa0 [ 79.712295][ T4347] ? clear_bhb_loop+0x30/0x80 [ 79.717004][ T4347] ? clear_bhb_loop+0x30/0x80 [ 79.721759][ T4347] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.727707][ T4347] RIP: 0033:0x7f643aac3fc9 [ 79.732152][ T4347] 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 [ 79.751785][ T4347] RSP: 002b:00007ffe89c1ab58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 79.760243][ T4347] RAX: ffffffffffffffda RBX: 00007f643ad1afa0 RCX: 00007f643aac3fc9 [ 79.768243][ T4347] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 79.776243][ T4347] RBP: 00007f643ab46f91 R08: 0000000000000000 R09: 0000000000000000 [ 79.784243][ T4347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.792249][ T4347] R13: 00007f643ad1afa0 R14: 00007f643ad1afa0 R15: 0000000000000003 [ 79.800257][ T4347] [ 79.943625][ T9] device hsr_slave_0 left promiscuous mode [ 79.953286][ T9] device hsr_slave_1 left promiscuous mode [ 79.964424][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 79.975691][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 79.984441][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 79.992168][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 80.000812][ T9] device bridge_slave_1 left promiscuous mode [ 80.007020][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.028249][ T9] device bridge_slave_0 left promiscuous mode [ 80.038026][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.059745][ T9] device veth1_macvtap left promiscuous mode [ 80.065807][ T9] device veth0_macvtap left promiscuous mode [ 80.084235][ T9] device veth1_vlan left promiscuous mode [ 80.090607][ T9] device veth0_vlan left promiscuous mode [ 80.265710][ T9] team0 (unregistering): Port device team_slave_1 removed [ 80.296429][ T9] team0 (unregistering): Port device team_slave_0 removed [ 80.317760][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 80.332697][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface