Warning: Permanently added '10.128.0.8' (ED25519) to the list of known hosts. 2026/09/11 04:13:43 parsed 1 programs 2026/09/11 04:13:43 serving rpc on tcp://38139 [ 84.371470][ T4284] cgroup: Unknown subsys name 'net' [ 84.508469][ T4284] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 86.177364][ T4284] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS [ 89.233672][ T4330] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 89.241884][ T4330] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 89.249450][ T4330] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 89.259917][ T4331] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 89.268098][ T4331] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 89.276059][ T4331] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 90.047994][ T4345] chnl_net:caif_netlink_parms(): no params data found [ 90.108838][ T4345] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.117057][ T4345] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.125522][ T4345] device bridge_slave_0 entered promiscuous mode [ 90.134663][ T4345] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.142560][ T4345] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.151068][ T4345] device bridge_slave_1 entered promiscuous mode [ 90.178762][ T4345] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 90.189904][ T4345] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 90.223185][ T4345] team0: Port device team_slave_0 added [ 90.231156][ T4345] team0: Port device team_slave_1 added [ 90.265013][ T4345] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 90.272081][ T4345] 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. [ 90.298191][ T4345] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 90.310977][ T4345] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 90.317951][ T4345] 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. [ 90.343909][ T4345] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 90.383212][ T4345] device hsr_slave_0 entered promiscuous mode [ 90.391090][ T4345] device hsr_slave_1 entered promiscuous mode [ 90.508213][ T4345] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 90.519089][ T4345] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 90.528497][ T4345] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 90.538813][ T4345] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 90.623774][ T4345] 8021q: adding VLAN 0 to HW filter on device bond0 [ 90.641593][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 90.652043][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 90.665646][ T4345] 8021q: adding VLAN 0 to HW filter on device team0 [ 90.676678][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 90.686652][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 90.696104][ T47] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.703445][ T47] bridge0: port 1(bridge_slave_0) entered forwarding state [ 90.712994][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 90.731515][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 90.740749][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 90.749316][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.756528][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 90.765604][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 90.784755][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 90.794618][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 90.804328][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 90.813190][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 90.842499][ T4345] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 90.855048][ T4345] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 90.873868][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 90.884299][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 90.893390][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 90.904397][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 90.913300][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 91.102367][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 91.111239][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 91.133191][ T4345] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 91.152308][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.178588][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.187941][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.196263][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.207656][ T4345] device veth0_vlan entered promiscuous mode [ 91.225179][ T4345] device veth1_vlan entered promiscuous mode [ 91.247327][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 91.255973][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 91.264916][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 91.281204][ T4345] device veth0_macvtap entered promiscuous mode [ 91.291875][ T4345] device veth1_macvtap entered promiscuous mode [ 91.316052][ T4345] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 91.324511][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 91.334345][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 91.347526][ T4345] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 91.361228][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 91.370087][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 91.382082][ T4345] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.392917][ T4345] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.402026][ T4345] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.411470][ T4345] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.684380][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 91.822965][ T130] cfg80211: failed to load regulatory.db [ 92.025031][ T57] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 92.039873][ T57] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 92.062386][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 92.092289][ T60] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 92.101808][ T60] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 92.112151][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2026/09/11 04:13:53 executed programs: 0 [ 92.836625][ T49] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 92.845707][ T49] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 92.853912][ T49] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 92.863216][ T49] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 92.871181][ T49] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 92.878563][ T49] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 93.006220][ T4378] chnl_net:caif_netlink_parms(): no params data found [ 93.055069][ T4378] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.062361][ T4378] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.070774][ T4378] device bridge_slave_0 entered promiscuous mode [ 93.078943][ T4378] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.086514][ T4378] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.094722][ T4378] device bridge_slave_1 entered promiscuous mode [ 93.118686][ T4378] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 93.130336][ T4378] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 93.154921][ T4378] team0: Port device team_slave_0 added [ 93.163035][ T4378] team0: Port device team_slave_1 added [ 93.182624][ T4378] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 93.189656][ T4378] 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. [ 93.219888][ T4378] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 93.233472][ T4378] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 93.240649][ T4378] 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. [ 93.267176][ T4378] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 93.304359][ T4378] device hsr_slave_0 entered promiscuous mode [ 93.311202][ T4378] device hsr_slave_1 entered promiscuous mode [ 93.318140][ T4378] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 93.326477][ T4378] Cannot create hsr debugfs directory [ 94.091119][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.940565][ T49] Bluetooth: hci0: command 0x0409 tx timeout [ 96.460260][ T11] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.531692][ T11] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.020777][ T49] Bluetooth: hci0: command 0x041b tx timeout [ 97.475747][ T4378] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 97.503621][ T4378] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 97.517209][ T4378] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 97.533915][ T11] device hsr_slave_0 left promiscuous mode [ 97.551574][ T11] device hsr_slave_1 left promiscuous mode [ 97.586348][ T11] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 97.602289][ T11] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 97.624035][ T11] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 97.639854][ T11] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 97.655783][ T11] device bridge_slave_1 left promiscuous mode [ 97.663633][ T11] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.679538][ T11] device bridge_slave_0 left promiscuous mode [ 97.687403][ T11] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.720806][ T11] device veth1_macvtap left promiscuous mode [ 97.727396][ T11] device veth0_macvtap left promiscuous mode [ 97.737941][ T11] device veth1_vlan left promiscuous mode [ 97.744241][ T11] device veth0_vlan left promiscuous mode [ 98.197099][ T11] team0 (unregistering): Port device team_slave_1 removed [ 98.230212][ T11] team0 (unregistering): Port device team_slave_0 removed [ 98.262465][ T11] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 98.293273][ T11] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 98.489163][ T11] bond0 (unregistering): Released all slaves [ 98.570182][ T4378] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 98.643985][ T4378] 8021q: adding VLAN 0 to HW filter on device bond0 [ 98.659006][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.667370][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.679498][ T4378] 8021q: adding VLAN 0 to HW filter on device team0 [ 98.693334][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 98.708856][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 98.717998][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.725244][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 98.735157][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 98.746743][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 98.755792][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 98.766653][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.773831][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 98.791927][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 98.802003][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 98.827039][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 98.836007][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 98.845713][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 98.854977][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 98.864782][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 98.885526][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 98.894819][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 98.906705][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 98.916362][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 98.934738][ T4378] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 99.099987][ T49] Bluetooth: hci0: command 0x040f tx timeout [ 99.186549][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 99.195599][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 99.208776][ T4378] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 99.228014][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 99.236945][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 99.257005][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 99.266884][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 99.277537][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 99.285761][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 99.295092][ T4378] device veth0_vlan entered promiscuous mode [ 99.317558][ T4378] device veth1_vlan entered promiscuous mode [ 99.338645][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 99.347130][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 99.356724][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 99.365815][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 99.387386][ T4378] device veth0_macvtap entered promiscuous mode [ 99.397418][ T4378] device veth1_macvtap entered promiscuous mode [ 99.415943][ T4378] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 99.436235][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 99.445070][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 99.453549][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 99.462448][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 99.484613][ T4378] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 99.493231][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 99.509282][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 99.533205][ T4378] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 99.542120][ T4378] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 99.551690][ T4378] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 99.560741][ T4378] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 99.629048][ T60] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 99.642406][ T60] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 99.666236][ T57] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready 2026/09/11 04:14:00 executed programs: 2 [ 99.685993][ T57] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 99.694201][ T57] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 99.703047][ T60] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 100.003459][ T4431] [ 100.005853][ T4431] ====================================================== [ 100.013060][ T4431] WARNING: possible circular locking dependency detected [ 100.020134][ T4431] syzkaller #0 Not tainted [ 100.024575][ T4431] ------------------------------------------------------ [ 100.031599][ T4431] syz.0.25/4431 is trying to acquire lock: [ 100.037418][ T4431] ffffffff8dedcb88 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_close+0x35/0x180 [ 100.046421][ T4431] [ 100.046421][ T4431] but task is already holding lock: [ 100.053789][ T4431] ffff88805bfac130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: __rfcomm_sock_close+0xd5/0x2b0 [ 100.065760][ T4431] [ 100.065760][ T4431] which lock already depends on the new lock. [ 100.065760][ T4431] [ 100.076171][ T4431] [ 100.076171][ T4431] the existing dependency chain (in reverse order) is: [ 100.085203][ T4431] [ 100.085203][ T4431] -> #1 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}: [ 100.094630][ T4431] lock_sock_nested+0x44/0x100 [ 100.099942][ T4431] rfcomm_connect_ind+0x4ec/0xd80 [ 100.105546][ T4431] rfcomm_run+0x2ac7/0x5d70 [ 100.110597][ T4431] kthread+0x29d/0x330 [ 100.115210][ T4431] ret_from_fork+0x1f/0x30 [ 100.120169][ T4431] [ 100.120169][ T4431] -> #0 (rfcomm_mutex){+.+.}-{3:3}: [ 100.127591][ T4431] __lock_acquire+0x2d18/0x7c40 [ 100.132974][ T4431] lock_acquire+0x1bb/0x4a0 [ 100.138183][ T4431] __mutex_lock+0x12d/0xae0 [ 100.143218][ T4431] rfcomm_dlc_close+0x35/0x180 [ 100.148519][ T4431] __rfcomm_sock_close+0x18a/0x2b0 [ 100.154162][ T4431] __rfcomm_sock_close+0xdd/0x2b0 [ 100.159711][ T4431] rfcomm_sock_shutdown+0xb5/0x240 [ 100.165347][ T4431] rfcomm_sock_release+0x55/0x110 [ 100.170903][ T4431] sock_close+0xbf/0x210 [ 100.175695][ T4431] __fput+0x20a/0x8b0 [ 100.180214][ T4431] task_work_run+0x1d0/0x260 [ 100.185361][ T4431] exit_to_user_mode_loop+0xe6/0x110 [ 100.191210][ T4431] exit_to_user_mode_prepare+0xee/0x180 [ 100.197310][ T4431] syscall_exit_to_user_mode+0x16/0x40 [ 100.203307][ T4431] do_syscall_64+0x58/0xa0 [ 100.208275][ T4431] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 100.214731][ T4431] [ 100.214731][ T4431] other info that might help us debug this: [ 100.214731][ T4431] [ 100.225055][ T4431] Possible unsafe locking scenario: [ 100.225055][ T4431] [ 100.232508][ T4431] CPU0 CPU1 [ 100.237874][ T4431] ---- ---- [ 100.243242][ T4431] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 100.249399][ T4431] lock(rfcomm_mutex); [ 100.256077][ T4431] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 100.264769][ T4431] lock(rfcomm_mutex); [ 100.268940][ T4431] [ 100.268940][ T4431] *** DEADLOCK *** [ 100.268940][ T4431] [ 100.277101][ T4431] 2 locks held by syz.0.25/4431: [ 100.282047][ T4431] #0: ffff88805ae20e10 (&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x82/0x210 [ 100.292254][ T4431] #1: ffff88805bfac130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: __rfcomm_sock_close+0xd5/0x2b0 [ 100.303928][ T4431] [ 100.303928][ T4431] stack backtrace: [ 100.309867][ T4431] CPU: 0 PID: 4431 Comm: syz.0.25 Not tainted syzkaller #0 [ 100.317107][ T4431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 100.327187][ T4431] Call Trace: [ 100.330473][ T4431] [ 100.333426][ T4431] dump_stack_lvl+0x188/0x24e [ 100.338129][ T4431] ? load_image+0x410/0x410 [ 100.342645][ T4431] ? show_regs_print_info+0x12/0x12 [ 100.347863][ T4431] ? print_circular_bug+0x12b/0x1a0 [ 100.353079][ T4431] check_noncircular+0x296/0x330 [ 100.358034][ T4431] ? is_bpf_text_address+0x28b/0x2a0 [ 100.363348][ T4431] ? add_chain_block+0x9b0/0x9b0 [ 100.368400][ T4431] ? lockdep_lock+0xf1/0x1f0 [ 100.373006][ T4431] ? _find_first_zero_bit+0xd2/0x100 [ 100.378316][ T4431] __lock_acquire+0x2d18/0x7c40 [ 100.383202][ T4431] ? verify_lock_unused+0x140/0x140 [ 100.388519][ T4431] ? mark_lock+0x94/0x320 [ 100.392882][ T4431] ? __lock_acquire+0x1465/0x7c40 [ 100.397963][ T4431] lock_acquire+0x1bb/0x4a0 [ 100.402486][ T4431] ? rfcomm_dlc_close+0x35/0x180 [ 100.407476][ T4431] ? __might_sleep+0xd0/0xd0 [ 100.412073][ T4431] ? read_lock_is_recursive+0x10/0x10 [ 100.417474][ T4431] ? print_unlock_imbalance_bug+0x160/0x160 [ 100.423390][ T4431] __mutex_lock+0x12d/0xae0 [ 100.427911][ T4431] ? rfcomm_dlc_close+0x35/0x180 [ 100.432992][ T4431] ? mark_lock+0x94/0x320 [ 100.437344][ T4431] ? rfcomm_dlc_close+0x35/0x180 [ 100.442325][ T4431] ? mutex_lock_nested+0x10/0x10 [ 100.447279][ T4431] ? lock_chain_count+0x20/0x20 [ 100.452178][ T4431] ? __rfcomm_sock_close+0xd5/0x2b0 [ 100.457392][ T4431] ? __local_bh_enable_ip+0x136/0x1c0 [ 100.462798][ T4431] ? lockdep_hardirqs_on+0x94/0x140 [ 100.468005][ T4431] rfcomm_dlc_close+0x35/0x180 [ 100.472808][ T4431] __rfcomm_sock_close+0x18a/0x2b0 [ 100.477941][ T4431] __rfcomm_sock_close+0xdd/0x2b0 [ 100.482979][ T4431] rfcomm_sock_shutdown+0xb5/0x240 [ 100.488202][ T4431] rfcomm_sock_release+0x55/0x110 [ 100.493236][ T4431] sock_close+0xbf/0x210 [ 100.497525][ T4431] ? sock_mmap+0x90/0x90 [ 100.501787][ T4431] __fput+0x20a/0x8b0 [ 100.505783][ T4431] task_work_run+0x1d0/0x260 [ 100.510398][ T4431] ? task_work_cancel+0x220/0x220 [ 100.515447][ T4431] ? __close_range+0x20c/0x770 [ 100.520246][ T4431] ? exit_to_user_mode_loop+0x3b/0x110 [ 100.525758][ T4431] exit_to_user_mode_loop+0xe6/0x110 [ 100.531103][ T4431] exit_to_user_mode_prepare+0xee/0x180 [ 100.536675][ T4431] syscall_exit_to_user_mode+0x16/0x40 [ 100.542171][ T4431] do_syscall_64+0x58/0xa0 [ 100.546731][ T4431] ? clear_bhb_loop+0x60/0xb0 [ 100.551449][ T4431] ? clear_bhb_loop+0x60/0xb0 [ 100.556139][ T4431] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 100.562045][ T4431] RIP: 0033:0x7f6076d9e159 [ 100.566502][ T4431] 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 [ 100.586119][ T4431] RSP: 002b:00007ffc05976fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 100.594544][ T4431] RAX: 0000000000000000 RBX: 00007ffc05977090 RCX: 00007f6076d9e159 [ 100.602525][ T4431] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 100.610515][ T4431] RBP: 0000000000018668 R08: 0000000000000001 R09: 0000000000000000 [ 100.618522][ T4431] R10: 0000001b2d920000 R11: 0000000000000246 R12: 0000000000000000 [ 100.626519][ T4431] R13: 00007f6077025fac R14: 00007f6077025fa8 R15: 00007f6077025fa0 [ 100.634598][ T4431] [ 101.179913][ T4331] Bluetooth: hci0: command 0x0419 tx timeout