Warning: Permanently added '10.128.1.101' (ED25519) to the list of known hosts. 1970/01/01 00:00:46 ignoring optional flag "type"="gce" 1970/01/01 00:00:47 parsed 1 programs [ 47.106820][ T4285] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SSFS 1970/01/01 00:00:47 executed programs: 0 [ 47.171727][ T4299] chnl_net:caif_netlink_parms(): no params data found [ 47.188756][ T4299] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.190000][ T4299] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.191408][ T4299] device bridge_slave_0 entered promiscuous mode [ 47.194068][ T4299] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.195133][ T4299] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.196541][ T4299] device bridge_slave_1 entered promiscuous mode [ 47.204475][ T4299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 47.206860][ T4299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 47.214975][ T4299] team0: Port device team_slave_0 added [ 47.216674][ T4299] team0: Port device team_slave_1 added [ 47.224283][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 47.225371][ T4299] 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. [ 47.229570][ T4299] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 47.231898][ T4299] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 47.232958][ T4299] 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. [ 47.237229][ T4299] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 47.284502][ T4299] device hsr_slave_0 entered promiscuous mode [ 47.323699][ T4299] device hsr_slave_1 entered promiscuous mode [ 47.812562][ T4299] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 47.835246][ T4299] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 47.874476][ T4299] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 47.905068][ T4299] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.941448][ T4299] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.942586][ T4299] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.943728][ T4299] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.944766][ T4299] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.962845][ T4299] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.967571][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.969289][ T148] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.970744][ T148] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.972437][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.976666][ T4299] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.979532][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.980922][ T407] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.982000][ T407] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.986355][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.987818][ T407] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.988901][ T407] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.995648][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.997253][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 48.000506][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.005547][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 48.014833][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 48.017578][ T4299] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 48.057778][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 48.059008][ T136] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 48.061990][ T4299] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 48.069087][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 48.075557][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 48.077087][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 48.078564][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 48.080745][ T4299] device veth0_vlan entered promiscuous mode [ 48.084741][ T4299] device veth1_vlan entered promiscuous mode [ 48.092691][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 48.094407][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 48.095885][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 48.098899][ T4299] device veth0_macvtap entered promiscuous mode [ 48.101059][ T4299] device veth1_macvtap entered promiscuous mode [ 48.107469][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 48.108746][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 48.110924][ T148] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 48.113864][ T4299] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 48.115924][ T4299] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.117189][ T4299] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.118483][ T4299] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.119944][ T4299] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.124522][ T407] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 48.179608][ T4435] [ 48.180021][ T4435] ====================================================== [ 48.181088][ T4435] WARNING: possible circular locking dependency detected [ 48.182167][ T4435] syzkaller #0 Not tainted [ 48.182875][ T4435] ------------------------------------------------------ [ 48.184011][ T4435] syz-executor.0/4435 is trying to acquire lock: [ 48.185005][ T4435] ffff0000c7e7cc28 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}, at: __flush_work+0xcc/0x1bc [ 48.186674][ T4435] [ 48.186674][ T4435] but task is already holding lock: [ 48.187757][ T4435] ffff80001652e268 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x238/0x5cc [ 48.189301][ T4435] [ 48.189301][ T4435] which lock already depends on the new lock. [ 48.189301][ T4435] [ 48.190967][ T4435] [ 48.190967][ T4435] the existing dependency chain (in reverse order) is: [ 48.192344][ T4435] [ 48.192344][ T4435] -> #4 (rfkill_global_mutex){+.+.}-{3:3}: [ 48.193571][ T4435] __mutex_lock_common+0x194/0x1edc [ 48.194492][ T4435] mutex_lock_nested+0xac/0x11c [ 48.195299][ T4435] rfkill_register+0x44/0x77c [ 48.196101][ T4435] hci_register_dev+0x3d8/0x854 [ 48.196885][ T4435] vhci_create_device+0x2bc/0x564 [ 48.197823][ T4435] vhci_write+0x30c/0x3ac [ 48.198590][ T4435] vfs_write+0x7c8/0xa2c [ 48.199370][ T4435] ksys_write+0x120/0x210 [ 48.200210][ T4435] __arm64_sys_write+0x7c/0x90 [ 48.201052][ T4435] invoke_syscall+0x98/0x2b8 [ 48.201886][ T4435] el0_svc_common+0x138/0x258 [ 48.202668][ T4435] do_el0_svc+0x58/0x14c [ 48.203430][ T4435] el0_svc+0x78/0x1e0 [ 48.204230][ T4435] el0t_64_sync_handler+0xcc/0xe4 [ 48.205162][ T4435] el0t_64_sync+0x1a0/0x1a4 [ 48.205956][ T4435] [ 48.205956][ T4435] -> #3 (&data->open_mutex){+.+.}-{3:3}: [ 48.207170][ T4435] __mutex_lock_common+0x194/0x1edc [ 48.208062][ T4435] mutex_lock_nested+0xac/0x11c [ 48.208907][ T4435] vhci_send_frame+0x88/0x118 [ 48.209686][ T4435] hci_send_frame+0x194/0x2f0 [ 48.210457][ T4435] hci_tx_work+0x7e4/0x1394 [ 48.211173][ T4435] process_one_work+0x79c/0x1140 [ 48.211993][ T4435] worker_thread+0x8f4/0x101c [ 48.212711][ T4435] kthread+0x374/0x454 [ 48.213356][ T4435] ret_from_fork+0x10/0x20 [ 48.214041][ T4435] [ 48.214041][ T4435] -> #2 ((work_completion)(&hdev->tx_work)){+.+.}-{0:0}: [ 48.215332][ T4435] __flush_work+0xf4/0x1bc [ 48.216022][ T4435] flush_work+0x24/0x38 [ 48.216674][ T4435] hci_dev_do_close+0x164/0x105c [ 48.217438][ T4435] hci_unregister_dev+0x23c/0x4c0 [ 48.218243][ T4435] vhci_release+0x74/0xc4 [ 48.218959][ T4435] __fput+0x1c0/0x7f8 [ 48.219598][ T4435] ____fput+0x20/0x30 [ 48.220203][ T4435] task_work_run+0x12c/0x1e0 [ 48.220983][ T4435] do_exit+0x684/0x1f58 [ 48.221626][ T4435] do_group_exit+0x100/0x268 [ 48.222454][ T4435] get_signal+0x73c/0x1340 [ 48.223208][ T4435] do_notify_resume+0x35c/0x3128 [ 48.224090][ T4435] el0_svc+0xf0/0x1e0 [ 48.224790][ T4435] el0t_64_sync_handler+0xcc/0xe4 [ 48.225769][ T4435] el0t_64_sync+0x1a0/0x1a4 [ 48.226627][ T4435] [ 48.226627][ T4435] -> #1 (&hdev->req_lock){+.+.}-{3:3}: [ 48.227883][ T4435] __mutex_lock_common+0x194/0x1edc [ 48.228826][ T4435] mutex_lock_nested+0xac/0x11c [ 48.229776][ T4435] bg_scan_update+0x48/0x3d0 [ 48.230623][ T4435] process_one_work+0x79c/0x1140 [ 48.231503][ T4435] worker_thread+0x8f4/0x101c [ 48.232310][ T4435] kthread+0x374/0x454 [ 48.233053][ T4435] ret_from_fork+0x10/0x20 [ 48.233787][ T4435] [ 48.233787][ T4435] -> #0 ((work_completion)(&hdev->bg_scan_update)){+.+.}-{0:0}: [ 48.235353][ T4435] __lock_acquire+0x2928/0x651c [ 48.236195][ T4435] lock_acquire+0x1f4/0x620 [ 48.237059][ T4435] __flush_work+0xf4/0x1bc [ 48.237845][ T4435] __cancel_work_timer+0x2ec/0x448 [ 48.238721][ T4435] cancel_work_sync+0x24/0x38 [ 48.239609][ T4435] hci_request_cancel_all+0xbc/0x2d0 [ 48.240529][ T4435] hci_dev_do_close+0x54/0x105c [ 48.241403][ T4435] hci_rfkill_set_block+0xdc/0x1d0 [ 48.242322][ T4435] rfkill_set_block+0x18c/0x374 [ 48.243197][ T4435] rfkill_fop_write+0x4a4/0x5cc [ 48.244032][ T4435] vfs_write+0x280/0xa2c [ 48.244769][ T4435] ksys_write+0x120/0x210 [ 48.245526][ T4435] __arm64_sys_write+0x7c/0x90 [ 48.246322][ T4435] invoke_syscall+0x98/0x2b8 [ 48.247095][ T4435] el0_svc_common+0x138/0x258 [ 48.247872][ T4435] do_el0_svc+0x58/0x14c [ 48.248597][ T4435] el0_svc+0x78/0x1e0 [ 48.249366][ T4435] el0t_64_sync_handler+0xcc/0xe4 [ 48.250240][ T4435] el0t_64_sync+0x1a0/0x1a4 [ 48.250973][ T4435] [ 48.250973][ T4435] other info that might help us debug this: [ 48.250973][ T4435] [ 48.252596][ T4435] Chain exists of: [ 48.252596][ T4435] (work_completion)(&hdev->bg_scan_update) --> &data->open_mutex --> rfkill_global_mutex [ 48.252596][ T4435] [ 48.255160][ T4435] Possible unsafe locking scenario: [ 48.255160][ T4435] [ 48.256305][ T4435] CPU0 CPU1 [ 48.257155][ T4435] ---- ---- [ 48.258035][ T4435] lock(rfkill_global_mutex); [ 48.258776][ T4435] lock(&data->open_mutex); [ 48.259910][ T4435] lock(rfkill_global_mutex); [ 48.261026][ T4435] lock((work_completion)(&hdev->bg_scan_update)); [ 48.262076][ T4435] [ 48.262076][ T4435] *** DEADLOCK *** [ 48.262076][ T4435] [ 48.263268][ T4435] 1 lock held by syz-executor.0/4435: [ 48.264104][ T4435] #0: ffff80001652e268 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0x238/0x5cc [ 48.265649][ T4435] [ 48.265649][ T4435] stack backtrace: [ 48.266560][ T4435] CPU: 0 PID: 4435 Comm: syz-executor.0 Not tainted syzkaller #0 [ 48.267683][ T4435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 [ 48.269169][ T4435] Call trace: [ 48.269614][ T4435] dump_backtrace+0x0/0x43c [ 48.270318][ T4435] show_stack+0x2c/0x3c [ 48.271033][ T4435] __dump_stack+0x30/0x40 [ 48.271758][ T4435] dump_stack_lvl+0xf8/0x160 [ 48.272461][ T4435] dump_stack+0x1c/0x5c [ 48.273187][ T4435] print_circular_bug+0x148/0x1b0 [ 48.273979][ T4435] check_noncircular+0x240/0x2d4 [ 48.274746][ T4435] __lock_acquire+0x2928/0x651c [ 48.275585][ T4435] lock_acquire+0x1f4/0x620 [ 48.276343][ T4435] __flush_work+0xf4/0x1bc [ 48.277053][ T4435] __cancel_work_timer+0x2ec/0x448 [ 48.277825][ T4435] cancel_work_sync+0x24/0x38 [ 48.278588][ T4435] hci_request_cancel_all+0xbc/0x2d0 [ 48.279417][ T4435] hci_dev_do_close+0x54/0x105c [ 48.280229][ T4435] hci_rfkill_set_block+0xdc/0x1d0 [ 48.281063][ T4435] rfkill_set_block+0x18c/0x374 [ 48.281870][ T4435] rfkill_fop_write+0x4a4/0x5cc [ 48.282700][ T4435] vfs_write+0x280/0xa2c [ 48.283373][ T4435] ksys_write+0x120/0x210 [ 48.284055][ T4435] __arm64_sys_write+0x7c/0x90 [ 48.284843][ T4435] invoke_syscall+0x98/0x2b8 [ 48.285659][ T4435] el0_svc_common+0x138/0x258 [ 48.286417][ T4435] do_el0_svc+0x58/0x14c [ 48.287082][ T4435] el0_svc+0x78/0x1e0 [ 48.287763][ T4435] el0t_64_sync_handler+0xcc/0xe4 [ 48.288625][ T4435] el0t_64_sync+0x1a0/0x1a4 1970/01/01 00:00:52 executed programs: 311 1970/01/01 00:00:57 executed programs: 866