Warning: Permanently added '10.128.1.239' (ED25519) to the list of known hosts. 1970/01/01 00:00:49 ignoring optional flag "type"="gce" 1970/01/01 00:00:49 parsed 1 programs [ 49.417442][ T4251] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS 1970/01/01 00:00:49 executed programs: 0 [ 49.499766][ T4267] chnl_net:caif_netlink_parms(): no params data found [ 49.519449][ T4267] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.520664][ T4267] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.522165][ T4267] device bridge_slave_0 entered promiscuous mode [ 49.524499][ T4267] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.525726][ T4267] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.527239][ T4267] device bridge_slave_1 entered promiscuous mode [ 49.536680][ T4267] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 49.539170][ T4267] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 49.548741][ T4267] team0: Port device team_slave_0 added [ 49.551161][ T4267] team0: Port device team_slave_1 added [ 49.558170][ T4267] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.559331][ T4267] 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. [ 49.563482][ T4267] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.565982][ T4267] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.567174][ T4267] 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. [ 49.571421][ T4267] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 49.641599][ T4267] device hsr_slave_0 entered promiscuous mode [ 49.680591][ T4267] device hsr_slave_1 entered promiscuous mode [ 50.312745][ T4267] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.352298][ T4267] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.401991][ T4267] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.432004][ T4267] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.489728][ T4267] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.491004][ T4267] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.492254][ T4267] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.493377][ T4267] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.521716][ T4267] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.526663][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.528554][ T9] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.530304][ T9] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.532442][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.539764][ T4267] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.546884][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 50.548593][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.550076][ T136] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.551290][ T136] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.561580][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 50.563292][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 50.573033][ T9] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.574212][ T9] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.575644][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 50.577251][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 50.578964][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 50.581295][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.583069][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.584751][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.586359][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.587837][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.591740][ T4267] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 50.593777][ T4267] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.598427][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.600020][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.604735][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.641387][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.642698][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.644737][ T4267] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.653543][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.655203][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.663742][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.665298][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.666783][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.668213][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.672573][ T4267] device veth0_vlan entered promiscuous mode [ 50.676306][ T4267] device veth1_vlan entered promiscuous mode [ 50.685527][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.686999][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.688465][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.689967][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.694853][ T4267] device veth0_macvtap entered promiscuous mode [ 50.697371][ T4267] device veth1_macvtap entered promiscuous mode [ 50.704496][ T4267] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.705837][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.707330][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.708722][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.710153][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.714534][ T4267] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.716581][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.719197][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.722411][ T4267] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.723770][ T4267] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.725080][ T4267] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.726341][ T4267] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.785095][ T4398] [ 50.785570][ T4398] ====================================================== [ 50.786688][ T4398] WARNING: possible circular locking dependency detected [ 50.787811][ T4398] syzkaller #0 Not tainted [ 50.788527][ T4398] ------------------------------------------------------ [ 50.789678][ T4398] syz-executor.0/4398 is trying to acquire lock: [ 50.790641][ T4398] ffff0000d241cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xe4/0x1ec [ 50.792381][ T4398] [ 50.792381][ T4398] but task is already holding lock: [ 50.793494][ T4398] ffff80001663b5c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x240/0x5dc [ 50.794986][ T4398] [ 50.794986][ T4398] which lock already depends on the new lock. [ 50.794986][ T4398] [ 50.796646][ T4398] [ 50.796646][ T4398] the existing dependency chain (in reverse order) is: [ 50.798052][ T4398] [ 50.798052][ T4398] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 50.799322][ T4398] __mutex_lock_common+0x194/0x1f14 [ 50.800199][ T4398] mutex_lock_nested+0xac/0x11c [ 50.801003][ T4398] rfkill_register+0x44/0x77c [ 50.801777][ T4398] hci_register_dev+0x3d8/0x850 [ 50.802560][ T4398] vhci_create_device+0x2bc/0x54c [ 50.803401][ T4398] vhci_write+0x30c/0x3ac [ 50.804268][ T4398] vfs_write+0x590/0xa60 [ 50.805039][ T4398] ksys_write+0x12c/0x224 [ 50.805807][ T4398] __arm64_sys_write+0x7c/0x90 [ 50.806708][ T4398] invoke_syscall+0x98/0x2b0 [ 50.807520][ T4398] el0_svc_common+0x138/0x258 [ 50.808297][ T4398] do_el0_svc+0x58/0x13c [ 50.809024][ T4398] el0_svc+0x78/0x1d0 [ 50.809740][ T4398] el0t_64_sync_handler+0xcc/0xe4 [ 50.810577][ T4398] el0t_64_sync+0x1a0/0x1a4 [ 50.811356][ T4398] [ 50.811356][ T4398] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 50.812514][ T4398] __mutex_lock_common+0x194/0x1f14 [ 50.813398][ T4398] mutex_lock_nested+0xac/0x11c [ 50.814194][ T4398] vhci_send_frame+0x88/0x118 [ 50.815008][ T4398] hci_send_frame+0x194/0x2ec [ 50.815803][ T4398] hci_tx_work+0x7e0/0x1378 [ 50.816563][ T4398] process_one_work+0x79c/0x1138 [ 50.817372][ T4398] worker_thread+0x8f4/0x1034 [ 50.818203][ T4398] kthread+0x374/0x454 [ 50.818865][ T4398] ret_from_fork+0x10/0x20 [ 50.819598][ T4398] [ 50.819598][ T4398] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 50.820997][ T4398] __flush_work+0x10c/0x1ec [ 50.821829][ T4398] flush_work+0x24/0x38 [ 50.822576][ T4398] hci_dev_do_close+0x164/0xfe4 [ 50.823457][ T4398] hci_unregister_dev+0x234/0x4a8 [ 50.824342][ T4398] vhci_release+0x74/0xc4 [ 50.825118][ T4398] __fput+0x1c0/0x7e8 [ 50.825846][ T4398] ____fput+0x20/0x30 [ 50.826494][ T4398] task_work_run+0x12c/0x1d8 [ 50.827287][ T4398] do_exit+0x688/0x1f50 [ 50.827997][ T4398] do_group_exit+0x100/0x268 [ 50.828745][ T4398] get_signal+0x73c/0x1334 [ 50.829488][ T4398] do_notify_resume+0x354/0x309c [ 50.830261][ T4398] el0_svc+0xf0/0x1d0 [ 50.830873][ T4398] el0t_64_sync_handler+0xcc/0xe4 [ 50.831736][ T4398] el0t_64_sync+0x1a0/0x1a4 [ 50.832433][ T4398] [ 50.832433][ T4398] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 50.833523][ T4398] __mutex_lock_common+0x194/0x1f14 [ 50.834359][ T4398] mutex_lock_nested+0xac/0x11c [ 50.835247][ T4398] bg_scan_update+0x48/0x3d0 [ 50.836032][ T4398] process_one_work+0x79c/0x1138 [ 50.836783][ T4398] worker_thread+0x8f4/0x1034 [ 50.837525][ T4398] kthread+0x374/0x454 [ 50.838169][ T4398] ret_from_fork+0x10/0x20 [ 50.838909][ T4398] [ 50.838909][ T4398] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 50.840376][ T4398] __lock_acquire+0x2870/0x67ec [ 50.841227][ T4398] lock_acquire+0x1f4/0x618 [ 50.841963][ T4398] __flush_work+0x10c/0x1ec [ 50.842667][ T4398] __cancel_work_timer+0x300/0x458 [ 50.843495][ T4398] cancel_work_sync+0x24/0x38 [ 50.844306][ T4398] hci_request_cancel_all+0xbc/0x2c8 [ 50.845154][ T4398] hci_dev_do_close+0x54/0xfe4 [ 50.845989][ T4398] hci_rfkill_set_block+0xdc/0x1bc [ 50.846882][ T4398] rfkill_set_block+0x18c/0x374 [ 50.847698][ T4398] rfkill_fop_write+0x4ac/0x5dc [ 50.848525][ T4398] vfs_write+0x284/0xa60 [ 50.849201][ T4398] ksys_write+0x12c/0x224 [ 50.849906][ T4398] __arm64_sys_write+0x7c/0x90 [ 50.850670][ T4398] invoke_syscall+0x98/0x2b0 [ 50.851391][ T4398] el0_svc_common+0x138/0x258 [ 50.852085][ T4398] do_el0_svc+0x58/0x13c [ 50.852836][ T4398] el0_svc+0x78/0x1d0 [ 50.853524][ T4398] el0t_64_sync_handler+0xcc/0xe4 [ 50.854357][ T4398] el0t_64_sync+0x1a0/0x1a4 [ 50.855134][ T4398] [ 50.855134][ T4398] other info that might help us debug this: [ 50.855134][ T4398] [ 50.856709][ T4398] Chain exists of: [ 50.856709][ T4398] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 50.856709][ T4398] [ 50.859093][ T4398] Possible unsafe locking scenario: [ 50.859093][ T4398] [ 50.860142][ T4398] CPU0 CPU1 [ 50.860923][ T4398] ---- ---- [ 50.861781][ T4398] lock(rfkill_global_mutex); [ 50.862534][ T4398] lock(&data->open_mutex); [ 50.863566][ T4398] lock(rfkill_global_mutex); [ 50.864681][ T4398] lock((work_completion)(&hdev->bg_scan_update)); [ 50.865707][ T4398] [ 50.865707][ T4398] *** DEADLOCK *** [ 50.865707][ T4398] [ 50.866941][ T4398] 1 lock held by syz-executor.0/4398: [ 50.867737][ T4398] #0: ffff80001663b5c8 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x240/0x5dc [ 50.869511][ T4398] [ 50.869511][ T4398] stack backtrace: [ 50.870456][ T4398] CPU: 0 PID: 4398 Comm: syz-executor.0 Not tainted syzkaller #0 [ 50.871671][ T4398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 50.873229][ T4398] Call trace: [ 50.873698][ T4398] dump_backtrace+0x0/0x458 [ 50.874459][ T4398] show_stack+0x2c/0x3c [ 50.875091][ T4398] __dump_stack+0x30/0x40 [ 50.875766][ T4398] dump_stack_lvl+0xf4/0x15c [ 50.876488][ T4398] dump_stack+0x1c/0x5c [ 50.877128][ T4398] print_circular_bug+0x148/0x1b0 [ 50.877871][ T4398] check_noncircular+0x264/0x2f8 [ 50.878661][ T4398] __lock_acquire+0x2870/0x67ec [ 50.879414][ T4398] lock_acquire+0x1f4/0x618 [ 50.880068][ T4398] __flush_work+0x10c/0x1ec [ 50.880688][ T4398] __cancel_work_timer+0x300/0x458 [ 50.881486][ T4398] cancel_work_sync+0x24/0x38 [ 50.882224][ T4398] hci_request_cancel_all+0xbc/0x2c8 [ 50.883006][ T4398] hci_dev_do_close+0x54/0xfe4 [ 50.883659][ T4398] hci_rfkill_set_block+0xdc/0x1bc [ 50.884388][ T4398] rfkill_set_block+0x18c/0x374 [ 50.885095][ T4398] rfkill_fop_write+0x4ac/0x5dc [ 50.885777][ T4398] vfs_write+0x284/0xa60 [ 50.886400][ T4398] ksys_write+0x12c/0x224 [ 50.887004][ T4398] __arm64_sys_write+0x7c/0x90 [ 50.887694][ T4398] invoke_syscall+0x98/0x2b0 [ 50.888422][ T4398] el0_svc_common+0x138/0x258 [ 50.889119][ T4398] do_el0_svc+0x58/0x13c [ 50.889727][ T4398] el0_svc+0x78/0x1d0 [ 50.890312][ T4398] el0t_64_sync_handler+0xcc/0xe4 [ 50.891122][ T4398] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:00:54 executed programs: 222 1970/01/01 00:00:59 executed programs: 670