Warning: Permanently added '10.128.0.149' (ED25519) to the list of known hosts. 2026/08/01 19:49:37 parsed 1 programs 2026/08/01 19:49:37 serving rpc on tcp://44073 [ 68.213379][ T4197] cgroup: Unknown subsys name 'net' [ 68.358572][ T4197] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 69.850987][ T4197] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 71.295807][ T1422] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.302469][ T1422] ieee802154 phy1 wpan1: encryption failed: -22 [ 73.361728][ T1275] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.369746][ T1275] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.386668][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.412813][ T154] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.420689][ T154] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.429227][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.510581][ T144] ODEBUG: Out of memory. ODEBUG disabled [ 74.010170][ T4287] chnl_net:caif_netlink_parms(): no params data found [ 74.056361][ T4287] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.064181][ T4287] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.072326][ T4287] device bridge_slave_0 entered promiscuous mode [ 74.082019][ T4287] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.089156][ T4287] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.097193][ T4287] device bridge_slave_1 entered promiscuous mode [ 74.117306][ T4287] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.128381][ T4287] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.150217][ T4287] team0: Port device team_slave_0 added [ 74.158154][ T4287] team0: Port device team_slave_1 added [ 74.175506][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.182674][ 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. [ 74.208656][ T4287] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.236874][ T4287] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.244205][ 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. [ 74.270424][ T4287] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.318539][ T4287] device hsr_slave_0 entered promiscuous mode [ 74.325759][ T4287] device hsr_slave_1 entered promiscuous mode [ 74.465479][ T4287] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.476949][ T4287] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.487868][ T4287] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.510251][ T4287] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.586709][ T4287] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.599992][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.608118][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.618565][ T4287] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.629699][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.639418][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.648473][ T155] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.655688][ T155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.671960][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.680045][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.689236][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.698397][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.705551][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.713425][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.723262][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.743047][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.752557][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.761053][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.770764][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.779496][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.789725][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.799198][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.809410][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.818149][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.847546][ T4287] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.949163][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.956786][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.970101][ T4287] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.008994][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.018117][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.039503][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 75.050621][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.060926][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.070333][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.092694][ T4287] device veth0_vlan entered promiscuous mode [ 75.107878][ T4287] device veth1_vlan entered promiscuous mode [ 75.132883][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.144763][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.153961][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.166509][ T4287] device veth0_macvtap entered promiscuous mode [ 75.177840][ T4287] device veth1_macvtap entered promiscuous mode [ 75.198389][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.206755][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.216955][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.226136][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.238427][ T4287] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.246399][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.255686][ T154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.267699][ T4287] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.276884][ T4287] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.286168][ T4287] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.296572][ T4287] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.398294][ T4287] syz-executor (4287) used greatest stack depth: 20176 bytes left 2026/08/01 19:49:47 executed programs: 0 [ 76.146687][ T4305] chnl_net:caif_netlink_parms(): no params data found [ 76.221869][ T4305] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.229055][ T4305] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.237592][ T4305] device bridge_slave_0 entered promiscuous mode [ 76.245969][ T4305] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.255699][ T4305] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.263886][ T4305] device bridge_slave_1 entered promiscuous mode [ 76.286642][ T4305] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.301128][ T4305] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.328006][ T4305] team0: Port device team_slave_0 added [ 76.336627][ T4305] team0: Port device team_slave_1 added [ 76.357423][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.365173][ T4305] 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. [ 76.391182][ T4305] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.403829][ T4305] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.410800][ T4305] 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. [ 76.437605][ T4305] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.478532][ T4305] device hsr_slave_0 entered promiscuous mode [ 76.485760][ T4305] device hsr_slave_1 entered promiscuous mode [ 76.492963][ T4305] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 76.500737][ T4305] Cannot create hsr debugfs directory [ 76.585509][ T4305] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.092133][ T4282] Bluetooth: hci0: command 0x0409 tx timeout [ 79.957919][ T4305] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 80.172600][ T4212] Bluetooth: hci0: command 0x041b tx timeout [ 80.980389][ T4305] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.050235][ T4305] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 81.197392][ T4305] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.217437][ T4305] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.227673][ T4305] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.236800][ T4305] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.299910][ T4305] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.325124][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 81.334730][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.356287][ T4305] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.367605][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 81.376419][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.385057][ T1275] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.392181][ T1275] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.400024][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 81.415676][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 81.424441][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.433063][ T155] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.440135][ T155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.459998][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 81.471930][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 81.483533][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 81.493091][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.502599][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.529115][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 81.539069][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.547743][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 81.556258][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.567326][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 81.576117][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.587105][ T4305] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.674046][ T144] device hsr_slave_0 left promiscuous mode [ 81.680738][ T144] device hsr_slave_1 left promiscuous mode [ 81.690508][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 81.699371][ T144] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 81.709135][ T144] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 81.718061][ T144] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 81.726098][ T144] device bridge_slave_1 left promiscuous mode [ 81.733562][ T144] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.749872][ T144] device bridge_slave_0 left promiscuous mode [ 81.757667][ T144] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.777085][ T144] device veth1_macvtap left promiscuous mode [ 81.783492][ T144] device veth0_macvtap left promiscuous mode [ 81.789553][ T144] device veth1_vlan left promiscuous mode [ 81.795540][ T144] device veth0_vlan left promiscuous mode [ 81.938498][ T144] team0 (unregistering): Port device team_slave_1 removed [ 81.954855][ T144] team0 (unregistering): Port device team_slave_0 removed [ 81.967865][ T144] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 81.981705][ T144] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 82.038567][ T144] bond0 (unregistering): Released all slaves [ 82.096226][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.103763][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.116111][ T4305] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.132494][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 82.141591][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.163269][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 82.172148][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.183288][ T4305] device veth0_vlan entered promiscuous mode [ 82.194428][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.203066][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.213432][ T4305] device veth1_vlan entered promiscuous mode [ 82.230770][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.239128][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.247304][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 82.255773][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.264007][ T4281] Bluetooth: hci0: command 0x040f tx timeout [ 82.274734][ T4305] device veth0_macvtap entered promiscuous mode [ 82.285921][ T4305] device veth1_macvtap entered promiscuous mode [ 82.306945][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.316983][ T4313] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.325106][ T4313] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 82.333578][ T4313] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.342196][ T4313] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.355272][ T4305] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.365402][ T4305] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.374538][ T4305] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.383601][ T4305] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.392728][ T4305] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.413410][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.423749][ T1275] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.474108][ T1275] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.485207][ T1275] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.495028][ T155] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.517743][ T4313] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.526098][ T4313] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.535381][ T4313] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 82.672302][ T4318] [ 82.674697][ T4318] ====================================================== [ 82.681738][ T4318] WARNING: possible circular locking dependency detected [ 82.688796][ T4318] syzkaller #0 Not tainted [ 82.693228][ T4318] ------------------------------------------------------ [ 82.700263][ T4318] syz.0.17/4318 is trying to acquire lock: [ 82.706109][ T4318] ffff888079655028 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xfa/0x210 [ 82.717219][ T4318] [ 82.717219][ T4318] but task is already holding lock: [ 82.724604][ T4318] ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 82.734328][ T4318] [ 82.734328][ T4318] which lock already depends on the new lock. [ 82.734328][ T4318] [ 82.744777][ T4318] [ 82.744777][ T4318] the existing dependency chain (in reverse order) is: [ 82.753818][ T4318] [ 82.753818][ T4318] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 82.761844][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 82.767596][ T4318] mutex_lock_nested+0x17/0x20 [ 82.772917][ T4318] rfkill_register+0x2f/0x970 [ 82.778144][ T4318] hci_register_dev+0x459/0x980 [ 82.783562][ T4318] vhci_create_device+0x32e/0x5c0 [ 82.789143][ T4318] vhci_write+0x389/0x440 [ 82.794021][ T4318] vfs_write+0x748/0xd70 [ 82.798809][ T4318] ksys_write+0x153/0x260 [ 82.803682][ T4318] do_syscall_64+0x4c/0xa0 [ 82.808655][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.815098][ T4318] [ 82.815098][ T4318] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 82.823120][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 82.828874][ T4318] mutex_lock_nested+0x17/0x20 [ 82.834200][ T4318] vhci_send_frame+0x88/0x100 [ 82.839434][ T4318] hci_send_frame+0x1a9/0x2e0 [ 82.844695][ T4318] hci_tx_work+0x9b5/0x16d0 [ 82.849743][ T4318] process_one_work+0x867/0xff0 [ 82.855142][ T4318] worker_thread+0xad7/0x12a0 [ 82.860366][ T4318] kthread+0x42e/0x520 [ 82.865035][ T4318] ret_from_fork+0x1f/0x30 [ 82.869999][ T4318] [ 82.869999][ T4318] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 82.879239][ T4318] __flush_work+0x116/0x210 [ 82.884297][ T4318] hci_dev_do_close+0x201/0x1020 [ 82.889788][ T4318] hci_unregister_dev+0x2eb/0x590 [ 82.895358][ T4318] vhci_release+0x73/0xc0 [ 82.900234][ T4318] __fput+0x212/0x8c0 [ 82.904763][ T4318] task_work_run+0x125/0x1a0 [ 82.909910][ T4318] do_exit+0x635/0x2110 [ 82.914614][ T4318] do_group_exit+0x12c/0x2f0 [ 82.919756][ T4318] get_signal+0x7eb/0x12e0 [ 82.924723][ T4318] arch_do_signal_or_restart+0xe6/0x12a0 [ 82.930911][ T4318] exit_to_user_mode_loop+0x9e/0x130 [ 82.936743][ T4318] exit_to_user_mode_prepare+0xee/0x180 [ 82.942832][ T4318] syscall_exit_to_user_mode+0x16/0x40 [ 82.948837][ T4318] do_syscall_64+0x58/0xa0 [ 82.953918][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 82.960366][ T4318] [ 82.960366][ T4318] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 82.968040][ T4318] __mutex_lock_common+0x1e5/0x2400 [ 82.973794][ T4318] mutex_lock_nested+0x17/0x20 [ 82.979105][ T4318] bg_scan_update+0x44/0x3b0 [ 82.984242][ T4318] process_one_work+0x867/0xff0 [ 82.989644][ T4318] worker_thread+0xad7/0x12a0 [ 82.994870][ T4318] kthread+0x42e/0x520 [ 82.999570][ T4318] ret_from_fork+0x1f/0x30 [ 83.004542][ T4318] [ 83.004542][ T4318] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 83.014399][ T4318] __lock_acquire+0x2c66/0x7b50 [ 83.019801][ T4318] lock_acquire+0x19e/0x400 [ 83.024855][ T4318] __flush_work+0x116/0x210 [ 83.029994][ T4318] __cancel_work_timer+0x3f4/0x560 [ 83.035653][ T4318] hci_request_cancel_all+0xcc/0x300 [ 83.041573][ T4318] hci_dev_do_close+0x4e/0x1020 [ 83.046992][ T4318] hci_rfkill_set_block+0x101/0x180 [ 83.052739][ T4318] rfkill_set_block+0x1c1/0x3c0 [ 83.058142][ T4318] rfkill_fop_write+0x453/0x560 [ 83.063543][ T4318] vfs_write+0x304/0xd70 [ 83.068341][ T4318] ksys_write+0x153/0x260 [ 83.073220][ T4318] do_syscall_64+0x4c/0xa0 [ 83.078181][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.084624][ T4318] [ 83.084624][ T4318] other info that might help us debug this: [ 83.084624][ T4318] [ 83.094870][ T4318] Chain exists of: [ 83.094870][ T4318] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 83.094870][ T4318] [ 83.110632][ T4318] Possible unsafe locking scenario: [ 83.110632][ T4318] [ 83.118129][ T4318] CPU0 CPU1 [ 83.123586][ T4318] ---- ---- [ 83.128978][ T4318] lock(rfkill_global_mutex); [ 83.133786][ T4318] lock(&data->open_mutex); [ 83.140930][ T4318] lock(rfkill_global_mutex); [ 83.148239][ T4318] lock((work_completion)(&hdev->bg_scan_update)); [ 83.154854][ T4318] [ 83.154854][ T4318] *** DEADLOCK *** [ 83.154854][ T4318] [ 83.163016][ T4318] 1 lock held by syz.0.17/4318: [ 83.167881][ T4318] #0: ffffffff8d6d5ea8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x1ae/0x560 [ 83.178013][ T4318] [ 83.178013][ T4318] stack backtrace: [ 83.183913][ T4318] CPU: 1 PID: 4318 Comm: syz.0.17 Not tainted syzkaller #0 [ 83.191131][ T4318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 83.201217][ T4318] Call Trace: [ 83.204520][ T4318] [ 83.207474][ T4318] dump_stack_lvl+0x188/0x250 [ 83.212186][ T4318] ? load_image+0x410/0x410 [ 83.216717][ T4318] ? show_regs_print_info+0x20/0x20 [ 83.221949][ T4318] ? print_circular_bug+0x12b/0x1a0 [ 83.227177][ T4318] check_noncircular+0x296/0x330 [ 83.232351][ T4318] ? look_up_lock_class+0x71/0x110 [ 83.237495][ T4318] ? add_chain_block+0x9b0/0x9b0 [ 83.242458][ T4318] ? lockdep_lock+0xf1/0x1f0 [ 83.247079][ T4318] ? __lock_acquire+0x1305/0x7b50 [ 83.252133][ T4318] ? mark_lock+0x94/0x320 [ 83.256505][ T4318] ? _find_first_zero_bit+0xd1/0xf0 [ 83.261776][ T4318] __lock_acquire+0x2c66/0x7b50 [ 83.266667][ T4318] ? verify_lock_unused+0x140/0x140 [ 83.271895][ T4318] ? verify_lock_unused+0x140/0x140 [ 83.277131][ T4318] lock_acquire+0x19e/0x400 [ 83.281753][ T4318] ? __flush_work+0xfa/0x210 [ 83.286367][ T4318] ? __lock_acquire+0x7b50/0x7b50 [ 83.291423][ T4318] ? read_lock_is_recursive+0x10/0x10 [ 83.296911][ T4318] ? start_flush_work+0x784/0x830 [ 83.301963][ T4318] ? __lock_acquire+0x13dc/0x7b50 [ 83.307019][ T4318] __flush_work+0x116/0x210 [ 83.311553][ T4318] ? __flush_work+0xfa/0x210 [ 83.316183][ T4318] ? flush_work+0x20/0x20 [ 83.320539][ T4318] ? try_to_grab_pending+0xfb/0x820 [ 83.325770][ T4318] ? mark_lock+0x94/0x320 [ 83.330135][ T4318] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 83.336145][ T4318] ? lock_chain_count+0x20/0x20 [ 83.341025][ T4318] ? mark_lock+0x94/0x320 [ 83.345376][ T4318] ? __cancel_work_timer+0x36a/0x560 [ 83.350695][ T4318] __cancel_work_timer+0x3f4/0x560 [ 83.355831][ T4318] ? cancel_work_sync+0x20/0x20 [ 83.360705][ T4318] ? __cancel_work+0x1f9/0x2e0 [ 83.365493][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 83.370725][ T4318] ? __cancel_work+0x27b/0x2e0 [ 83.375546][ T4318] ? cancel_work+0x20/0x20 [ 83.380013][ T4318] hci_request_cancel_all+0xcc/0x300 [ 83.385343][ T4318] hci_dev_do_close+0x4e/0x1020 [ 83.390237][ T4318] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 83.396156][ T4318] ? _raw_spin_unlock+0x40/0x40 [ 83.401034][ T4318] hci_rfkill_set_block+0x101/0x180 [ 83.406263][ T4318] ? rcu_lock_release+0x20/0x20 [ 83.411137][ T4318] rfkill_set_block+0x1c1/0x3c0 [ 83.416010][ T4318] rfkill_fop_write+0x453/0x560 [ 83.420889][ T4318] ? rfkill_fop_read+0x560/0x560 [ 83.425853][ T4318] ? common_file_perm+0x100/0x1c0 [ 83.430899][ T4318] ? fsnotify_perm+0x5d/0x560 [ 83.435603][ T4318] ? security_file_permission+0x75/0xa0 [ 83.441167][ T4318] ? rfkill_fop_read+0x560/0x560 [ 83.446122][ T4318] vfs_write+0x304/0xd70 [ 83.450393][ T4318] ? file_end_write+0x250/0x250 [ 83.455273][ T4318] ? __context_tracking_exit+0x4c/0x80 [ 83.460765][ T4318] ? __fdget_pos+0x1e2/0x370 [ 83.465382][ T4318] ksys_write+0x153/0x260 [ 83.469737][ T4318] ? __ia32_sys_read+0x80/0x80 [ 83.474525][ T4318] ? lockdep_hardirqs_on+0x94/0x140 [ 83.480010][ T4318] do_syscall_64+0x4c/0xa0 [ 83.484455][ T4318] ? clear_bhb_loop+0x30/0x80 [ 83.489157][ T4318] ? clear_bhb_loop+0x30/0x80 [ 83.493863][ T4318] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 83.499801][ T4318] RIP: 0033:0x7fec2e66f019 [ 83.504237][ T4318] 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 [ 83.523868][ T4318] RSP: 002b:00007ffd26854458 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 83.532314][ T4318] RAX: ffffffffffffffda RBX: 00007fec2e8f6fa0 RCX: 00007fec2e66f019 [ 83.540307][ T4318] RDX: 0000000000000008 RSI: 0000200000000040 RDI: 0000000000000003 [ 83.548304][ T4318] RBP: 00007fec2e70600c R08: 0000000000000000 R09: 0000000000000000 [ 83.556425][ T4318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 83.564511][ T4318] R13: 00007fec2e8f6fac R14: 00007fec2e8f6fa0 R15: 00007fec2e8f6fa0 [ 83.572521][ T4318]