Warning: Permanently added '10.128.0.217' (ED25519) to the list of known hosts. 2025/09/13 23:46:27 parsed 1 programs syzkaller login: [ 64.919178][ T4189] cgroup: Unknown subsys name 'net' [ 65.026061][ T4189] cgroup: Unknown subsys name 'rlimit' [ 66.576004][ T4189] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 70.013142][ T9] ODEBUG: Out of memory. ODEBUG disabled [ 70.275934][ T4243] chnl_net:caif_netlink_parms(): no params data found [ 70.320778][ T4243] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.328587][ T4243] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.337210][ T4243] device bridge_slave_0 entered promiscuous mode [ 70.346305][ T4243] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.353404][ T4243] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.361419][ T4243] device bridge_slave_1 entered promiscuous mode [ 70.382890][ T4243] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.393947][ T4243] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.416966][ T4243] team0: Port device team_slave_0 added [ 70.424161][ T4243] team0: Port device team_slave_1 added [ 70.443062][ T4243] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.450081][ T4243] 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. [ 70.476264][ T4243] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.488544][ T4243] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.495639][ T4243] 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. [ 70.521634][ T4243] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.551186][ T4243] device hsr_slave_0 entered promiscuous mode [ 70.558493][ T4243] device hsr_slave_1 entered promiscuous mode [ 70.665658][ T4243] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.676870][ T4243] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.686813][ T4243] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 70.696727][ T4243] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 70.740191][ T4243] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.747445][ T4243] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.755084][ T4243] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.762139][ T4243] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.821703][ T4243] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.835689][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.847842][ T1250] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.856194][ T1250] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.865430][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 70.878724][ T4243] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.907626][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.917230][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.924351][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.938911][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.947630][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.954780][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.989920][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.998610][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.015686][ T4243] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 71.026693][ T4243] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 71.039240][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.048316][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.058331][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.068229][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.178582][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.186672][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.199875][ T4243] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.231476][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 71.240737][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.273170][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 71.282235][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.291012][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.299953][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.310076][ T4243] device veth0_vlan entered promiscuous mode [ 71.340140][ T4243] device veth1_vlan entered promiscuous mode [ 71.358911][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.368252][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.378078][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 71.386835][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.397478][ T4243] device veth0_macvtap entered promiscuous mode [ 71.408389][ T4243] device veth1_macvtap entered promiscuous mode [ 71.426166][ T4243] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.433671][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.446918][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 71.448461][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.455656][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 71.460970][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 [ 71.471365][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.488140][ T4243] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.499311][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.508914][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.520875][ T4243] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.531976][ T4243] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.541196][ T4243] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.550228][ T4243] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.887013][ T423] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.904456][ T423] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.916528][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 71.931056][ T1250] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 71.940666][ T1250] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 71.951562][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2025/09/13 23:46:37 executed programs: 0 [ 72.892279][ T4296] chnl_net:caif_netlink_parms(): no params data found [ 72.940441][ T4296] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.947878][ T4296] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.956235][ T4296] device bridge_slave_0 entered promiscuous mode [ 72.964656][ T4296] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.971834][ T4296] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.980360][ T4296] device bridge_slave_1 entered promiscuous mode [ 73.004120][ T4296] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.015742][ T4296] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.044551][ T4296] team0: Port device team_slave_0 added [ 73.052461][ T4296] team0: Port device team_slave_1 added [ 73.079275][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.086369][ T4296] 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. [ 73.112567][ T4296] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.124786][ T4296] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.131757][ T4296] 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. [ 73.158037][ T4296] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.197890][ T4296] device hsr_slave_0 entered promiscuous mode [ 73.205440][ T4296] device hsr_slave_1 entered promiscuous mode [ 73.211950][ T4296] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.220219][ T4296] Cannot create hsr debugfs directory [ 73.260012][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.805359][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 76.280464][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.330707][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.400443][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.894547][ T7] Bluetooth: hci0: command 0x041b tx timeout [ 77.178908][ T4296] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 77.187870][ T4296] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 77.197381][ T4296] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 77.219955][ T4296] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 77.286675][ T4296] 8021q: adding VLAN 0 to HW filter on device bond0 [ 77.299519][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 77.307419][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 77.317550][ T4296] 8021q: adding VLAN 0 to HW filter on device team0 [ 77.338548][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 77.348235][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 77.357470][ T154] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.364580][ T154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 77.372900][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 77.395664][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 77.406034][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 77.415000][ T1250] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.422069][ T1250] bridge0: port 2(bridge_slave_1) entered forwarding state [ 77.430286][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 77.441635][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 77.471226][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 77.480866][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 77.489828][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 77.500173][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 77.510584][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 77.523271][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 77.532291][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.550924][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 77.560816][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.570408][ T4296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.637400][ T9] device hsr_slave_0 left promiscuous mode [ 77.643993][ T9] device hsr_slave_1 left promiscuous mode [ 77.651002][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 77.658678][ T9] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 77.668070][ T9] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 77.676181][ T9] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 77.683776][ T9] device bridge_slave_1 left promiscuous mode [ 77.691270][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.703501][ T9] device bridge_slave_0 left promiscuous mode [ 77.710847][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.729032][ T9] device veth1_macvtap left promiscuous mode [ 77.736181][ T9] device veth0_macvtap left promiscuous mode [ 77.742265][ T9] device veth1_vlan left promiscuous mode [ 77.748839][ T9] device veth0_vlan left promiscuous mode [ 77.885926][ T9] team0 (unregistering): Port device team_slave_1 removed [ 77.899900][ T9] team0 (unregistering): Port device team_slave_0 removed [ 77.911938][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.925069][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.979970][ T9] bond0 (unregistering): Released all slaves [ 78.078512][ T4296] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.093234][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.101186][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.117698][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 78.127154][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.150328][ T4296] device veth0_vlan entered promiscuous mode [ 78.161113][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 78.169657][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.179127][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.187592][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.200005][ T4296] device veth1_vlan entered promiscuous mode [ 78.227138][ T4296] device veth0_macvtap entered promiscuous mode [ 78.234112][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.242539][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.251141][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.260028][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.269816][ T1250] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.280468][ T4296] device veth1_macvtap entered promiscuous mode [ 78.297421][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.307354][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.315506][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.324032][ T3096] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.335353][ T4296] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.343276][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.351939][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.362802][ T4296] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.371927][ T4296] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.380909][ T4296] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.389968][ T4296] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.463767][ T1250] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.484011][ T1250] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.493077][ T3096] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.503416][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 78.511414][ T3096] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.521669][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 78.642981][ T4354] [ 78.645363][ T4354] ====================================================== [ 78.652393][ T4354] WARNING: possible circular locking dependency detected [ 78.659439][ T4354] syzkaller #0 Not tainted [ 78.663977][ T4354] ------------------------------------------------------ [ 78.671007][ T4354] syz.0.17/4354 is trying to acquire lock: [ 78.676825][ T4354] ffff8880228b4c28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xc1/0x1b0 [ 78.687928][ T4354] [ 78.687928][ T4354] but task is already holding lock: [ 78.695305][ T4354] ffffffff8d4c0468 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 78.704995][ T4354] [ 78.704995][ T4354] which lock already depends on the new lock. [ 78.704995][ T4354] [ 78.715408][ T4354] [ 78.715408][ T4354] the existing dependency chain (in reverse order) is: [ 78.724430][ T4354] [ 78.724430][ T4354] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 78.732449][ T4354] __mutex_lock_common+0x1eb/0x2390 [ 78.738202][ T4354] mutex_lock_nested+0x17/0x20 [ 78.743513][ T4354] rfkill_register+0x33/0x8a0 [ 78.748733][ T4354] hci_register_dev+0x452/0x970 [ 78.754126][ T4354] vhci_create_device+0x32c/0x5c0 [ 78.759692][ T4354] vhci_write+0x391/0x450 [ 78.764561][ T4354] vfs_write+0x712/0xd00 [ 78.769343][ T4354] ksys_write+0x14d/0x250 [ 78.774212][ T4354] do_syscall_64+0x4c/0xa0 [ 78.779167][ T4354] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.785606][ T4354] [ 78.785606][ T4354] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 78.793447][ T4354] __mutex_lock_common+0x1eb/0x2390 [ 78.799195][ T4354] mutex_lock_nested+0x17/0x20 [ 78.804508][ T4354] vhci_send_frame+0x88/0x100 [ 78.809726][ T4354] hci_send_frame+0x1a9/0x2e0 [ 78.814944][ T4354] hci_tx_work+0x9f9/0x1710 [ 78.819993][ T4354] process_one_work+0x863/0x1000 [ 78.825463][ T4354] worker_thread+0xaa8/0x12a0 [ 78.830669][ T4354] kthread+0x436/0x520 [ 78.835261][ T4354] ret_from_fork+0x1f/0x30 [ 78.840213][ T4354] [ 78.840213][ T4354] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 78.849573][ T4354] __flush_work+0xdd/0x1b0 [ 78.854546][ T4354] hci_dev_do_close+0x1e7/0x1030 [ 78.860015][ T4354] hci_unregister_dev+0x2d7/0x580 [ 78.865577][ T4354] vhci_release+0x73/0xc0 [ 78.870437][ T4354] __fput+0x234/0x930 [ 78.874953][ T4354] task_work_run+0x125/0x1a0 [ 78.880071][ T4354] do_exit+0x61e/0x20a0 [ 78.884760][ T4354] do_group_exit+0x12e/0x300 [ 78.889878][ T4354] get_signal+0x6ca/0x12c0 [ 78.894823][ T4354] arch_do_signal_or_restart+0xc1/0x1300 [ 78.900993][ T4354] exit_to_user_mode_loop+0x9e/0x130 [ 78.906819][ T4354] exit_to_user_mode_prepare+0xee/0x180 [ 78.912898][ T4354] syscall_exit_to_user_mode+0x16/0x40 [ 78.918994][ T4354] do_syscall_64+0x58/0xa0 [ 78.923941][ T4354] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 78.930363][ T4354] [ 78.930363][ T4354] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 78.938024][ T4354] __mutex_lock_common+0x1eb/0x2390 [ 78.943766][ T4354] mutex_lock_nested+0x17/0x20 [ 78.949159][ T4354] bg_scan_update+0x44/0x3b0 [ 78.954301][ T4354] process_one_work+0x863/0x1000 [ 78.959785][ T4354] worker_thread+0xaa8/0x12a0 [ 78.965004][ T4354] kthread+0x436/0x520 [ 78.969634][ T4354] ret_from_fork+0x1f/0x30 [ 78.974588][ T4354] [ 78.974588][ T4354] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 78.984546][ T4354] __lock_acquire+0x2c33/0x7c60 [ 78.990039][ T4354] lock_acquire+0x197/0x3f0 [ 78.995026][ T4319] Bluetooth: hci0: command 0x040f tx timeout [ 78.995081][ T4354] __flush_work+0xdd/0x1b0 [ 79.006229][ T4354] __cancel_work_timer+0x3ac/0x520 [ 79.011884][ T4354] hci_request_cancel_all+0xcc/0x300 [ 79.017716][ T4354] hci_dev_do_close+0x4e/0x1030 [ 79.023112][ T4354] hci_rfkill_set_block+0x10a/0x190 [ 79.028849][ T4354] rfkill_set_block+0x1c6/0x420 [ 79.034236][ T4354] rfkill_fop_write+0x458/0x560 [ 79.039620][ T4354] vfs_write+0x300/0xd00 [ 79.044398][ T4354] ksys_write+0x14d/0x250 [ 79.049269][ T4354] do_syscall_64+0x4c/0xa0 [ 79.054223][ T4354] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.060650][ T4354] [ 79.060650][ T4354] other info that might help us debug this: [ 79.060650][ T4354] [ 79.070882][ T4354] Chain exists of: [ 79.070882][ T4354] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 79.070882][ T4354] [ 79.086628][ T4354] Possible unsafe locking scenario: [ 79.086628][ T4354] [ 79.094090][ T4354] CPU0 CPU1 [ 79.099496][ T4354] ---- ---- [ 79.104872][ T4354] lock(rfkill_global_mutex); [ 79.109656][ T4354] lock(&data->open_mutex); [ 79.116790][ T4354] lock(rfkill_global_mutex); [ 79.124094][ T4354] lock((work_completion)(&hdev->bg_scan_update)); [ 79.130704][ T4354] [ 79.130704][ T4354] *** DEADLOCK *** [ 79.130704][ T4354] [ 79.138863][ T4354] 1 lock held by syz.0.17/4354: [ 79.143757][ T4354] #0: ffffffff8d4c0468 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x19e/0x560 [ 79.153893][ T4354] [ 79.153893][ T4354] stack backtrace: [ 79.159801][ T4354] CPU: 1 PID: 4354 Comm: syz.0.17 Not tainted syzkaller #0 [ 79.167016][ T4354] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 [ 79.177097][ T4354] Call Trace: [ 79.180383][ T4354] [ 79.183320][ T4354] dump_stack_lvl+0x168/0x230 [ 79.188006][ T4354] ? load_image+0x3b0/0x3b0 [ 79.192544][ T4354] ? show_regs_print_info+0x20/0x20 [ 79.197752][ T4354] ? print_circular_bug+0x12b/0x1a0 [ 79.202958][ T4354] check_noncircular+0x274/0x310 [ 79.207898][ T4354] ? add_chain_block+0x940/0x940 [ 79.212835][ T4354] ? lockdep_lock+0xdc/0x1e0 [ 79.217449][ T4354] ? __lock_acquire+0x12d9/0x7c60 [ 79.222479][ T4354] ? lockdep_lock+0x1e0/0x1e0 [ 79.227157][ T4354] ? mark_lock+0x94/0x320 [ 79.231490][ T4354] __lock_acquire+0x2c33/0x7c60 [ 79.236609][ T4354] ? rcu_lock_release+0x5/0x20 [ 79.241392][ T4354] ? verify_lock_unused+0x140/0x140 [ 79.246605][ T4354] lock_acquire+0x197/0x3f0 [ 79.251115][ T4354] ? __flush_work+0xc1/0x1b0 [ 79.255709][ T4354] ? __lock_acquire+0x7c60/0x7c60 [ 79.260739][ T4354] ? read_lock_is_recursive+0x10/0x10 [ 79.266117][ T4354] ? start_flush_work+0x776/0x820 [ 79.271148][ T4354] __flush_work+0xdd/0x1b0 [ 79.275568][ T4354] ? __flush_work+0xc1/0x1b0 [ 79.280163][ T4354] ? flush_work+0x20/0x20 [ 79.284491][ T4354] ? try_to_grab_pending+0xf3/0x7e0 [ 79.289691][ T4354] ? lockdep_hardirqs_off+0x70/0x100 [ 79.294978][ T4354] ? mark_lock+0x94/0x320 [ 79.299403][ T4354] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 79.305384][ T4354] ? lock_chain_count+0x20/0x20 [ 79.310235][ T4354] ? mark_lock+0x94/0x320 [ 79.314565][ T4354] ? __cancel_work_timer+0x331/0x520 [ 79.319854][ T4354] __cancel_work_timer+0x3ac/0x520 [ 79.324966][ T4354] ? cancel_work_sync+0x20/0x20 [ 79.329815][ T4354] ? __cancel_work+0x1f4/0x2d0 [ 79.334583][ T4354] ? lockdep_hardirqs_on+0x94/0x140 [ 79.339801][ T4354] ? __cancel_work+0x26f/0x2d0 [ 79.344599][ T4354] ? cancel_work+0x20/0x20 [ 79.349036][ T4354] ? lock_chain_count+0x20/0x20 [ 79.353901][ T4354] hci_request_cancel_all+0xcc/0x300 [ 79.359198][ T4354] hci_dev_do_close+0x4e/0x1030 [ 79.364057][ T4354] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 79.369963][ T4354] ? _raw_spin_unlock+0x40/0x40 [ 79.374834][ T4354] hci_rfkill_set_block+0x10a/0x190 [ 79.380049][ T4354] ? rcu_lock_release+0x20/0x20 [ 79.384907][ T4354] rfkill_set_block+0x1c6/0x420 [ 79.389760][ T4354] rfkill_fop_write+0x458/0x560 [ 79.394612][ T4354] ? verify_lock_unused+0x140/0x140 [ 79.399814][ T4354] ? rfkill_fop_read+0x4b0/0x4b0 [ 79.404761][ T4354] ? common_file_perm+0xc0/0x1c0 [ 79.409699][ T4354] ? fsnotify_perm+0x5d/0x560 [ 79.414379][ T4354] ? security_file_permission+0x75/0xa0 [ 79.419947][ T4354] ? rfkill_fop_read+0x4b0/0x4b0 [ 79.424886][ T4354] vfs_write+0x300/0xd00 [ 79.429132][ T4354] ? file_end_write+0x250/0x250 [ 79.433993][ T4354] ? __context_tracking_exit+0x4c/0x80 [ 79.439482][ T4354] ? __lock_acquire+0x7c60/0x7c60 [ 79.444607][ T4354] ? __fdget_pos+0x1e2/0x370 [ 79.449287][ T4354] ksys_write+0x14d/0x250 [ 79.453616][ T4354] ? __ia32_sys_read+0x80/0x80 [ 79.458381][ T4354] ? lockdep_hardirqs_on+0x94/0x140 [ 79.463580][ T4354] do_syscall_64+0x4c/0xa0 [ 79.467996][ T4354] ? clear_bhb_loop+0x30/0x80 [ 79.472673][ T4354] ? clear_bhb_loop+0x30/0x80 [ 79.477349][ T4354] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 79.483258][ T4354] RIP: 0033:0x7fd6cbc8cba9 [ 79.487678][ T4354] 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 [ 79.507288][ T4354] RSP: 002b:00007fff0b83b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 79.515703][ T4354] RAX: ffffffffffffffda RBX: 00007fd6cbed3fa0 RCX: 00007fd6cbc8cba9 [ 79.523678][ T4354] RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 [ 79.531654][ T4354] RBP: 00007fd6cbd0fe19 R08: 0000000000000000 R09: 0000000000000000 [ 79.539627][ T4354] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.547598][ T4354] R13: 00007fd6cbed3fa0 R14: 00007fd6cbed3fa0 R15: 0000000000000003 [ 79.555591][ T4354]