Warning: Permanently added '10.128.10.4' (ED25519) to the list of known hosts. 2026/01/16 10:18:32 parsed 1 programs [ 70.842682][ T4187] cgroup: Unknown subsys name 'net' [ 71.015210][ T4187] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.391493][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.398092][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.510003][ T4187] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 74.132243][ T154] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.140355][ T154] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.153161][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.176480][ T144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.184661][ T144] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.193407][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 74.582810][ T4217] syz-executor (4217) used greatest stack depth: 21152 bytes left [ 74.643916][ T4221] chnl_net:caif_netlink_parms(): no params data found [ 74.716902][ T4221] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.725976][ T4221] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.734453][ T4221] device bridge_slave_0 entered promiscuous mode [ 74.745725][ T4221] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.753612][ T4221] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.763359][ T4221] device bridge_slave_1 entered promiscuous mode [ 74.795807][ T4221] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.807711][ T4221] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.843591][ T4221] team0: Port device team_slave_0 added [ 74.853156][ T4221] team0: Port device team_slave_1 added [ 74.881212][ T4221] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.888559][ T4221] 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. [ 74.916203][ T4221] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.931037][ T4221] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.938131][ T4221] 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. [ 74.965406][ T4221] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.007833][ T4221] device hsr_slave_0 entered promiscuous mode [ 75.016036][ T4221] device hsr_slave_1 entered promiscuous mode [ 75.168682][ T4221] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.182677][ T4221] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.192869][ T4221] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.205752][ T4221] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.303542][ T4221] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.319743][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 75.332984][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.344930][ T4221] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.357647][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 75.368002][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.377538][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.384900][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.406901][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 75.415994][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 75.425546][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.435830][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.442972][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.454391][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 75.472383][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 75.482379][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 75.495294][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.504428][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.515669][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 75.525018][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.542594][ T4221] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.554287][ T4221] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.566676][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 75.577282][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.586954][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 75.597063][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.606405][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.760975][ T4221] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.770518][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.779344][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.801067][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.812322][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.834947][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.845346][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.856592][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.865535][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.877367][ T4221] device veth0_vlan entered promiscuous mode [ 75.891096][ T4221] device veth1_vlan entered promiscuous mode [ 75.917028][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.926608][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.935803][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 75.947325][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.962489][ T4221] device veth0_macvtap entered promiscuous mode [ 75.975330][ T4221] device veth1_macvtap entered promiscuous mode [ 75.995672][ T4221] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.003715][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.013084][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.022220][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.031205][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.044292][ T4221] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.055278][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.064211][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.076261][ T4221] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.085434][ T4221] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.094845][ T4221] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.104051][ T4221] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.224299][ T4221] syz-executor (4221) used greatest stack depth: 19944 bytes left [ 76.302450][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.995230][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.244281][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.316843][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/01/16 10:18:47 executed programs: 0 [ 83.400533][ T9] device hsr_slave_0 left promiscuous mode [ 83.409614][ T9] device hsr_slave_1 left promiscuous mode [ 83.416391][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 83.425614][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 83.439958][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 83.458064][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 83.478418][ T9] device bridge_slave_1 left promiscuous mode [ 83.485565][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.519124][ T9] device bridge_slave_0 left promiscuous mode [ 83.525502][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.550946][ T9] device veth1_macvtap left promiscuous mode [ 83.557361][ T9] device veth0_macvtap left promiscuous mode [ 83.564527][ T9] device veth1_vlan left promiscuous mode [ 83.572430][ T9] device veth0_vlan left promiscuous mode [ 83.743107][ T9] team0 (unregistering): Port device team_slave_1 removed [ 83.755979][ T9] team0 (unregistering): Port device team_slave_0 removed [ 83.770001][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 83.785166][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 83.843418][ T9] bond0 (unregistering): Released all slaves [ 84.087207][ T4350] chnl_net:caif_netlink_parms(): no params data found [ 84.174972][ T4350] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.182842][ T4350] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.191147][ T4350] device bridge_slave_0 entered promiscuous mode [ 84.208803][ T4350] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.216575][ T4350] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.226206][ T4350] device bridge_slave_1 entered promiscuous mode [ 84.253754][ T4350] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.277085][ T4350] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.350036][ T4350] team0: Port device team_slave_0 added [ 84.368710][ T4350] team0: Port device team_slave_1 added [ 84.415054][ T4350] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 84.423620][ T4350] 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. [ 84.451479][ T4350] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 84.464894][ T4350] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 84.473426][ T4350] 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. [ 84.501521][ T4350] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.555250][ T4350] device hsr_slave_0 entered promiscuous mode [ 84.562368][ T4350] device hsr_slave_1 entered promiscuous mode [ 85.202879][ T4350] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.221223][ T4350] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.241069][ T4350] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.259298][ T4350] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 85.393857][ T4350] 8021q: adding VLAN 0 to HW filter on device bond0 [ 85.410179][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 85.425091][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 85.447106][ T4350] 8021q: adding VLAN 0 to HW filter on device team0 [ 85.461307][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 85.478768][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 85.499225][ T144] bridge0: port 1(bridge_slave_0) entered blocking state [ 85.506357][ T144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 85.530161][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 85.561487][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 85.568844][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 85.591110][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 85.608548][ T144] bridge0: port 2(bridge_slave_1) entered blocking state [ 85.615770][ T144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.639838][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 85.651949][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 85.672040][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 85.682292][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 85.692237][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 85.702113][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 85.712156][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 85.721107][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 85.735934][ T4350] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 85.748448][ T4350] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.757642][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 85.767107][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 85.776298][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 86.008551][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 86.016106][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 86.050283][ T4350] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 86.088499][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 86.097456][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 86.141085][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 86.158786][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 86.179180][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 86.196707][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 86.207291][ T4350] device veth0_vlan entered promiscuous mode [ 86.229309][ T4350] device veth1_vlan entered promiscuous mode [ 86.273900][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 86.286103][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 86.296554][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 86.306189][ T144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 86.320095][ T4350] device veth0_macvtap entered promiscuous mode [ 86.338523][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 86.360880][ T4350] device veth1_macvtap entered promiscuous mode [ 86.399935][ T4350] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 86.407863][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 86.425254][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 86.451938][ T4350] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 86.469474][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 86.481631][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 86.496067][ T4350] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.515291][ T4350] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.524142][ T4350] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.534288][ T4350] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 86.714772][ T144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.743392][ T144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.785900][ T1325] cfg80211: failed to load regulatory.db [ 86.787160][ T4208] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 86.854180][ T4208] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 86.869354][ T4208] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 86.886102][ T765] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 86.979969][ T4461] [ 86.982361][ T4461] ====================================================== [ 86.989488][ T4461] WARNING: possible circular locking dependency detected [ 86.996539][ T4461] syzkaller #0 Not tainted [ 87.000987][ T4461] ------------------------------------------------------ [ 87.008032][ T4461] syz.0.17/4461 is trying to acquire lock: [ 87.013895][ T4461] ffff8880243b0c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 87.025009][ T4461] [ 87.025009][ T4461] but task is already holding lock: [ 87.032396][ T4461] ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 87.042098][ T4461] [ 87.042098][ T4461] which lock already depends on the new lock. [ 87.042098][ T4461] [ 87.052523][ T4461] [ 87.052523][ T4461] the existing dependency chain (in reverse order) is: [ 87.061570][ T4461] [ 87.061570][ T4461] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 87.069607][ T4461] __mutex_lock_common+0x1eb/0x2390 [ 87.075373][ T4461] mutex_lock_nested+0x17/0x20 [ 87.080698][ T4461] rfkill_register+0x33/0x8a0 [ 87.085936][ T4461] hci_register_dev+0x452/0x970 [ 87.091432][ T4461] vhci_create_device+0x32c/0x5c0 [ 87.097013][ T4461] vhci_write+0x391/0x450 [ 87.101901][ T4461] vfs_write+0x712/0xd00 [ 87.106697][ T4461] ksys_write+0x14d/0x250 [ 87.111583][ T4461] do_syscall_64+0x4c/0xa0 [ 87.116590][ T4461] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.123043][ T4461] [ 87.123043][ T4461] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 87.130902][ T4461] __mutex_lock_common+0x1eb/0x2390 [ 87.136668][ T4461] mutex_lock_nested+0x17/0x20 [ 87.141991][ T4461] vhci_send_frame+0x88/0x100 [ 87.147222][ T4461] hci_send_frame+0x1a9/0x2e0 [ 87.152559][ T4461] hci_tx_work+0x9f9/0x1710 [ 87.157790][ T4461] process_one_work+0x863/0x1000 [ 87.163369][ T4461] worker_thread+0xaa8/0x12a0 [ 87.168600][ T4461] kthread+0x436/0x520 [ 87.173330][ T4461] ret_from_fork+0x1f/0x30 [ 87.178309][ T4461] [ 87.178309][ T4461] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 87.187551][ T4461] __flush_work+0xdd/0x1b0 [ 87.192532][ T4461] hci_dev_do_close+0x1e7/0x1030 [ 87.198188][ T4461] hci_unregister_dev+0x2d7/0x580 [ 87.203768][ T4461] vhci_release+0x73/0xc0 [ 87.208652][ T4461] __fput+0x234/0x930 [ 87.213183][ T4461] task_work_run+0x125/0x1a0 [ 87.218326][ T4461] do_exit+0x61e/0x20a0 [ 87.223039][ T4461] do_group_exit+0x12e/0x300 [ 87.228193][ T4461] get_signal+0x6ca/0x12c0 [ 87.233158][ T4461] arch_do_signal_or_restart+0xc1/0x1300 [ 87.239348][ T4461] exit_to_user_mode_loop+0x9e/0x130 [ 87.245184][ T4461] exit_to_user_mode_prepare+0xee/0x180 [ 87.251289][ T4461] syscall_exit_to_user_mode+0x16/0x40 [ 87.257307][ T4461] do_syscall_64+0x58/0xa0 [ 87.262322][ T4461] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.268769][ T4461] [ 87.268769][ T4461] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 87.276451][ T4461] __mutex_lock_common+0x1eb/0x2390 [ 87.282213][ T4461] mutex_lock_nested+0x17/0x20 [ 87.287538][ T4461] bg_scan_update+0x44/0x3b0 [ 87.292686][ T4461] process_one_work+0x863/0x1000 [ 87.298180][ T4461] worker_thread+0xaa8/0x12a0 [ 87.303404][ T4461] kthread+0x436/0x520 [ 87.308018][ T4461] ret_from_fork+0x1f/0x30 [ 87.312993][ T4461] [ 87.312993][ T4461] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 87.322839][ T4461] __lock_acquire+0x2c33/0x7c60 [ 87.328249][ T4461] lock_acquire+0x197/0x3f0 [ 87.333307][ T4461] __flush_work+0xdd/0x1b0 [ 87.338270][ T4461] __cancel_work_timer+0x3ac/0x520 [ 87.343940][ T4461] hci_request_cancel_all+0xcc/0x300 [ 87.349917][ T4461] hci_dev_do_close+0x4e/0x1030 [ 87.355337][ T4461] hci_rfkill_set_block+0x10a/0x190 [ 87.361093][ T4461] rfkill_set_block+0x1c6/0x420 [ 87.366505][ T4461] rfkill_fop_write+0x458/0x560 [ 87.371909][ T4461] vfs_write+0x300/0xd00 [ 87.376704][ T4461] ksys_write+0x14d/0x250 [ 87.381582][ T4461] do_syscall_64+0x4c/0xa0 [ 87.386561][ T4461] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.393008][ T4461] [ 87.393008][ T4461] other info that might help us debug this: [ 87.393008][ T4461] [ 87.403272][ T4461] Chain exists of: [ 87.403272][ T4461] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 87.403272][ T4461] [ 87.419047][ T4461] Possible unsafe locking scenario: [ 87.419047][ T4461] [ 87.426519][ T4461] CPU0 CPU1 [ 87.431931][ T4461] ---- ---- [ 87.437354][ T4461] lock(rfkill_global_mutex); [ 87.442156][ T4461] lock(&data->open_mutex); [ 87.449295][ T4461] lock(rfkill_global_mutex); [ 87.456606][ T4461] lock((work_completion)(&hdev->bg_scan_update)); [ 87.463222][ T4461] [ 87.463222][ T4461] *** DEADLOCK *** [ 87.463222][ T4461] [ 87.471404][ T4461] 1 lock held by syz.0.17/4461: [ 87.476288][ T4461] #0: ffffffff8d4ba7e8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 87.486424][ T4461] [ 87.486424][ T4461] stack backtrace: [ 87.492343][ T4461] CPU: 1 PID: 4461 Comm: syz.0.17 Not tainted syzkaller #0 [ 87.499564][ T4461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 87.509689][ T4461] Call Trace: [ 87.512999][ T4461] [ 87.516043][ T4461] dump_stack_lvl+0x168/0x230 [ 87.520759][ T4461] ? load_image+0x3b0/0x3b0 [ 87.525317][ T4461] ? show_regs_print_info+0x20/0x20 [ 87.530634][ T4461] ? print_circular_bug+0x12b/0x1a0 [ 87.535871][ T4461] check_noncircular+0x274/0x310 [ 87.540843][ T4461] ? add_chain_block+0x940/0x940 [ 87.545815][ T4461] ? lockdep_lock+0xdc/0x1e0 [ 87.550455][ T4461] ? __lock_acquire+0x12d9/0x7c60 [ 87.555513][ T4461] ? lockdep_lock+0x1e0/0x1e0 [ 87.560230][ T4461] ? mark_lock+0x94/0x320 [ 87.564606][ T4461] __lock_acquire+0x2c33/0x7c60 [ 87.569510][ T4461] ? verify_lock_unused+0x140/0x140 [ 87.574747][ T4461] ? verify_lock_unused+0x140/0x140 [ 87.579992][ T4461] lock_acquire+0x197/0x3f0 [ 87.584536][ T4461] ? __flush_work+0xc1/0x1b0 [ 87.589154][ T4461] ? __lock_acquire+0x7c60/0x7c60 [ 87.594211][ T4461] ? read_lock_is_recursive+0x10/0x10 [ 87.599624][ T4461] ? start_flush_work+0x776/0x820 [ 87.604679][ T4461] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 87.610625][ T4461] ? _raw_spin_unlock+0x40/0x40 [ 87.615596][ T4461] __flush_work+0xdd/0x1b0 [ 87.620038][ T4461] ? __flush_work+0xc1/0x1b0 [ 87.624663][ T4461] ? flush_work+0x20/0x20 [ 87.629024][ T4461] ? try_to_grab_pending+0xf3/0x7e0 [ 87.634281][ T4461] ? lockdep_hardirqs_off+0x70/0x100 [ 87.639605][ T4461] ? mark_lock+0x94/0x320 [ 87.643968][ T4461] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 87.650072][ T4461] ? lock_chain_count+0x20/0x20 [ 87.654961][ T4461] ? mark_lock+0x94/0x320 [ 87.659330][ T4461] ? __cancel_work_timer+0x331/0x520 [ 87.664643][ T4461] __cancel_work_timer+0x3ac/0x520 [ 87.669784][ T4461] ? cancel_work_sync+0x20/0x20 [ 87.674659][ T4461] ? __cancel_work+0x1f4/0x2d0 [ 87.679451][ T4461] ? lockdep_hardirqs_on+0x94/0x140 [ 87.684680][ T4461] ? __cancel_work+0x26f/0x2d0 [ 87.689478][ T4461] ? cancel_work+0x20/0x20 [ 87.693928][ T4461] ? lock_chain_count+0x20/0x20 [ 87.698813][ T4461] hci_request_cancel_all+0xcc/0x300 [ 87.704133][ T4461] hci_dev_do_close+0x4e/0x1030 [ 87.709026][ T4461] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 87.715041][ T4461] ? _raw_spin_unlock+0x40/0x40 [ 87.719937][ T4461] hci_rfkill_set_block+0x10a/0x190 [ 87.725172][ T4461] ? rcu_lock_release+0x20/0x20 [ 87.730061][ T4461] rfkill_set_block+0x1c6/0x420 [ 87.734941][ T4461] rfkill_fop_write+0x458/0x560 [ 87.739828][ T4461] ? verify_lock_unused+0x140/0x140 [ 87.745061][ T4461] ? rfkill_fop_read+0x4b0/0x4b0 [ 87.750029][ T4461] ? common_file_perm+0xc0/0x1c0 [ 87.755004][ T4461] ? fsnotify_perm+0x5d/0x560 [ 87.759726][ T4461] ? security_file_permission+0x75/0xa0 [ 87.765311][ T4461] ? rfkill_fop_read+0x4b0/0x4b0 [ 87.770292][ T4461] vfs_write+0x300/0xd00 [ 87.774568][ T4461] ? file_end_write+0x250/0x250 [ 87.779454][ T4461] ? __context_tracking_exit+0x4c/0x80 [ 87.784951][ T4461] ? __lock_acquire+0x7c60/0x7c60 [ 87.790016][ T4461] ? __fdget_pos+0x1e2/0x370 [ 87.794644][ T4461] ksys_write+0x14d/0x250 [ 87.799015][ T4461] ? __ia32_sys_read+0x80/0x80 [ 87.803817][ T4461] ? lockdep_hardirqs_on+0x94/0x140 [ 87.809071][ T4461] do_syscall_64+0x4c/0xa0 [ 87.813531][ T4461] ? clear_bhb_loop+0x30/0x80 [ 87.818247][ T4461] ? clear_bhb_loop+0x30/0x80 [ 87.822962][ T4461] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 87.828902][ T4461] RIP: 0033:0x7f78a580f749 [ 87.833349][ T4461] 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 [ 87.852988][ T4461] RSP: 002b:00007ffeccd00a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 87.861443][ T4461] RAX: ffffffffffffffda RBX: 00007f78a5a65fa0 RCX: 00007f78a580f749 [ 87.869446][ T4461] RDX: 0000000000000008 RSI: 0000200000000000 RDI: 0000000000000003 SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 87.877450][ T4461] RBP: 00007f78a5893f91 R08: 0000000000000000 R09: 0000000000000000 [ 87.885543][ T4461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.893638][ T4461] R13: 00007f78a5a65fa0 R14: 00007f78a5a65fa0 R15: 0000000000000003 [ 87.901651][ T4461] [ 87.906835][ T4459] Bluetooth: hci0: command 0x041b tx timeout