ss_scheduled_works+0x10/0x10
[  320.703968][ T5114]  ? assign_work+0x3d5/0x5e0
[  320.704065][ T5114]  worker_thread+0xa50/0xfc0
[  320.704230][ T5114]  kthread+0x388/0x470
[  320.704295][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  320.704378][ T5114]  ? __pfx_kthread+0x10/0x10
[  320.704444][ T5114]  ret_from_fork+0x51e/0xb90
[  320.704533][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  320.704620][ T5114]  ? __switch_to+0xc7d/0x1450
[  320.704698][ T5114]  ? __pfx_kthread+0x10/0x10
[  320.704770][ T5114]  ret_from_fork_asm+0x1a/0x30
[  320.704870][ T5114]  </TASK>
[  320.704944][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  320.705082][ T5114] Bluetooth: hci0: failed to register connection device
[  320.924992][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  320.925068][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  320.925143][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  320.925179][ T5114] Workqueue: hci0 hci_rx_work
[  320.925274][ T5114] Call Trace:
[  320.925304][ T5114]  <TASK>
[  320.925326][ T5114]  dump_stack_lvl+0xe8/0x150
[  320.925433][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  320.925500][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  320.925574][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  320.925659][ T5114]  ? rt_spin_unlock+0x160/0x200
[  320.925727][ T5114]  kobject_add_internal+0x631/0xd10
[  320.925843][ T5114]  kobject_add+0x163/0x240
[  320.925935][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  320.926035][ T5114]  ? get_device_parent+0x370/0x3a0
[  320.926155][ T5114]  device_add+0x408/0xb80
[  320.926264][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  320.926341][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  320.926467][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  320.926533][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  320.926561][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  320.926592][ T5114]  ? skb_pull_data+0xfb/0x200
[  320.926618][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  320.926653][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  320.926692][ T5114]  hci_event_packet+0x7af/0x12c0
[  320.926727][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  320.926783][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  320.926858][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  320.926948][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  320.927006][ T5114]  hci_rx_work+0x3ee/0x1030
[  320.927081][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  320.927201][ T5114]  process_scheduled_works+0xb02/0x1830
[  320.927367][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  320.927480][ T5114]  ? assign_work+0x3d5/0x5e0
[  320.927574][ T5114]  worker_thread+0xa50/0xfc0
[  320.927726][ T5114]  kthread+0x388/0x470
[  320.927790][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  320.927854][ T5114]  ? __pfx_kthread+0x10/0x10
[  320.927922][ T5114]  ret_from_fork+0x51e/0xb90
[  320.928022][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  320.928098][ T5114]  ? __switch_to+0xc7d/0x1450
[  320.928185][ T5114]  ? __pfx_kthread+0x10/0x10
[  320.928249][ T5114]  ret_from_fork_asm+0x1a/0x30
[  320.928355][ T5114]  </TASK>
[  320.934621][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  320.934790][ T5114] Bluetooth: hci0: failed to register connection device
[  321.129084][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  321.129161][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  321.129263][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  321.129305][ T5114] Workqueue: hci0 hci_rx_work
[  321.129391][ T5114] Call Trace:
[  321.129422][ T5114]  <TASK>
[  321.129445][ T5114]  dump_stack_lvl+0xe8/0x150
[  321.129542][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  321.129616][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  321.129684][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  321.129768][ T5114]  ? rt_spin_unlock+0x160/0x200
[  321.129843][ T5114]  kobject_add_internal+0x631/0xd10
[  321.129952][ T5114]  kobject_add+0x163/0x240
[  321.130090][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  321.130202][ T5114]  ? get_device_parent+0x370/0x3a0
[  321.130309][ T5114]  device_add+0x408/0xb80
[  321.130470][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  321.130565][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  321.130686][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  321.130780][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  321.130867][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  321.130956][ T5114]  ? skb_pull_data+0xfb/0x200
[  321.131029][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  321.131122][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  321.131228][ T5114]  hci_event_packet+0x7af/0x12c0
[  321.131315][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  321.131400][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  321.131467][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  321.131593][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  321.131666][ T5114]  hci_rx_work+0x3ee/0x1030
[  321.131817][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  321.131910][ T5114]  process_scheduled_works+0xb02/0x1830
[  321.132067][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  321.132171][ T5114]  ? assign_work+0x3d5/0x5e0
[  321.132263][ T5114]  worker_thread+0xa50/0xfc0
[  321.132422][ T5114]  kthread+0x388/0x470
[  321.132487][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  321.132565][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.132631][ T5114]  ret_from_fork+0x51e/0xb90
[  321.132727][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  321.132803][ T5114]  ? __switch_to+0xc7d/0x1450
[  321.132888][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.132952][ T5114]  ret_from_fork_asm+0x1a/0x30
[  321.133045][ T5114]  </TASK>
[  321.133386][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  321.133502][ T5114] Bluetooth: hci0: failed to register connection device
[  321.320336][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  321.320411][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  321.320476][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  321.320518][ T5114] Workqueue: hci0 hci_rx_work
[  321.320605][ T5114] Call Trace:
[  321.320635][ T5114]  <TASK>
[  321.320659][ T5114]  dump_stack_lvl+0xe8/0x150
[  321.320755][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  321.320823][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  321.320890][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  321.320971][ T5114]  ? rt_spin_unlock+0x160/0x200
[  321.321047][ T5114]  kobject_add_internal+0x631/0xd10
[  321.321162][ T5114]  kobject_add+0x163/0x240
[  321.321261][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  321.321374][ T5114]  ? get_device_parent+0x370/0x3a0
[  321.321483][ T5114]  device_add+0x408/0xb80
[  321.321605][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  321.321690][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  321.321809][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  321.321913][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  321.321991][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  321.322085][ T5114]  ? skb_pull_data+0xfb/0x200
[  321.322152][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  321.322203][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  321.322250][ T5114]  hci_event_packet+0x7af/0x12c0
[  321.322368][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  321.322463][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  321.322537][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  321.322625][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  321.322698][ T5114]  hci_rx_work+0x3ee/0x1030
[  321.322794][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  321.322880][ T5114]  process_scheduled_works+0xb02/0x1830
[  321.323042][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  321.323141][ T5114]  ? assign_work+0x3d5/0x5e0
[  321.323236][ T5114]  worker_thread+0xa50/0xfc0
[  321.323407][ T5114]  kthread+0x388/0x470
[  321.323472][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  321.323548][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.323613][ T5114]  ret_from_fork+0x51e/0xb90
[  321.323715][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  321.323820][ T5114]  ? __switch_to+0xc7d/0x1450
[  321.323902][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.323977][ T5114]  ret_from_fork_asm+0x1a/0x30
[  321.324076][ T5114]  </TASK>
[  321.324162][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  321.324277][ T5114] Bluetooth: hci0: failed to register connection device
[  321.433938][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  321.434011][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  321.434127][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  321.434168][ T5114] Workqueue: hci0 hci_rx_work
[  321.434255][ T5114] Call Trace:
[  321.434278][ T5114]  <TASK>
[  321.434307][ T5114]  dump_stack_lvl+0xe8/0x150
[  321.434397][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  321.434470][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  321.434544][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  321.434632][ T5114]  ? rt_spin_unlock+0x160/0x200
[  321.434706][ T5114]  kobject_add_internal+0x631/0xd10
[  321.434819][ T5114]  kobject_add+0x163/0x240
[  321.434925][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  321.435033][ T5114]  ? get_device_parent+0x370/0x3a0
[  321.435127][ T5114]  device_add+0x408/0xb80
[  321.435247][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  321.435338][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  321.435459][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  321.435564][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  321.435653][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  321.435743][ T5114]  ? skb_pull_data+0xfb/0x200
[  321.435816][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  321.435912][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  321.436011][ T5114]  hci_event_packet+0x7af/0x12c0
[  321.436086][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  321.436172][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  321.436246][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  321.436334][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  321.436408][ T5114]  hci_rx_work+0x3ee/0x1030
[  321.436500][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  321.436539][ T5114]  process_scheduled_works+0xb02/0x1830
[  321.436603][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  321.436642][ T5114]  ? assign_work+0x3d5/0x5e0
[  321.436678][ T5114]  worker_thread+0xa50/0xfc0
[  321.436873][ T5114]  kthread+0x388/0x470
[  321.436938][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  321.437014][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.437074][ T5114]  ret_from_fork+0x51e/0xb90
[  321.437170][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  321.437247][ T5114]  ? __switch_to+0xc7d/0x1450
[  321.437325][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.437402][ T5114]  ret_from_fork_asm+0x1a/0x30
[  321.437541][ T5114]  </TASK>
[  321.438050][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  321.438160][ T5114] Bluetooth: hci0: failed to register connection device
[  321.686694][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  321.686776][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  321.686850][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  321.686891][ T5114] Workqueue: hci0 hci_rx_work
[  321.686980][ T5114] Call Trace:
[  321.687010][ T5114]  <TASK>
[  321.687033][ T5114]  dump_stack_lvl+0xe8/0x150
[  321.687118][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  321.687192][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  321.687238][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  321.687306][ T5114]  ? rt_spin_unlock+0x160/0x200
[  321.687386][ T5114]  kobject_add_internal+0x631/0xd10
[  321.687616][ T5114]  kobject_add+0x163/0x240
[  321.687717][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  321.687835][ T5114]  ? get_device_parent+0x370/0x3a0
[  321.687942][ T5114]  device_add+0x408/0xb80
[  321.688042][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  321.688113][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  321.688230][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  321.688321][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  321.688406][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  321.688502][ T5114]  ? skb_pull_data+0xfb/0x200
[  321.688592][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  321.688692][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  321.688793][ T5114]  hci_event_packet+0x7af/0x12c0
[  321.689187][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  321.689426][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  321.689529][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  321.689591][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  321.689667][ T5114]  hci_rx_work+0x3ee/0x1030
[  321.689765][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  321.689869][ T5114]  process_scheduled_works+0xb02/0x1830
[  321.690130][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  321.690210][ T5114]  ? assign_work+0x3d5/0x5e0
[  321.690309][ T5114]  worker_thread+0xa50/0xfc0
[  321.690461][ T5114]  kthread+0x388/0x470
[  321.690486][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  321.690600][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.690689][ T5114]  ret_from_fork+0x51e/0xb90
[  321.690786][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  321.690871][ T5114]  ? __switch_to+0xc7d/0x1450
[  321.690959][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.691036][ T5114]  ret_from_fork_asm+0x1a/0x30
[  321.691145][ T5114]  </TASK>
[  321.691261][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  321.691380][ T5114] Bluetooth: hci0: failed to register connection device
[  321.918515][ T5114] Bluetooth: hci0: command 0x0419 tx timeout
[  321.940466][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  321.940540][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  321.940607][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  321.940648][ T5114] Workqueue: hci0 hci_rx_work
[  321.940734][ T5114] Call Trace:
[  321.940763][ T5114]  <TASK>
[  321.940787][ T5114]  dump_stack_lvl+0xe8/0x150
[  321.940886][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  321.940983][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  321.941060][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  321.941138][ T5114]  ? rt_spin_unlock+0x160/0x200
[  321.941212][ T5114]  kobject_add_internal+0x631/0xd10
[  321.941329][ T5114]  kobject_add+0x163/0x240
[  321.941441][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  321.941537][ T5114]  ? get_device_parent+0x370/0x3a0
[  321.941644][ T5114]  device_add+0x408/0xb80
[  321.941751][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  321.941833][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  321.941954][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  321.942079][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  321.942166][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  321.942254][ T5114]  ? skb_pull_data+0xfb/0x200
[  321.942328][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  321.942418][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  321.942520][ T5114]  hci_event_packet+0x7af/0x12c0
[  321.942608][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  321.942693][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  321.942767][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  321.942862][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  321.942928][ T5114]  hci_rx_work+0x3ee/0x1030
[  321.943033][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  321.943120][ T5114]  process_scheduled_works+0xb02/0x1830
[  321.943297][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  321.943438][ T5114]  ? assign_work+0x3d5/0x5e0
[  321.943535][ T5114]  worker_thread+0xa50/0xfc0
[  321.943689][ T5114]  kthread+0x388/0x470
[  321.943747][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  321.943831][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.943898][ T5114]  ret_from_fork+0x51e/0xb90
[  321.944004][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  321.944080][ T5114]  ? __switch_to+0xc7d/0x1450
[  321.944167][ T5114]  ? __pfx_kthread+0x10/0x10
[  321.944236][ T5114]  ret_from_fork_asm+0x1a/0x30
[  321.944342][ T5114]  </TASK>
[  321.944429][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  321.944531][ T5114] Bluetooth: hci0: failed to register connection device
[  322.149326][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  322.149430][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  322.149514][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  322.149549][ T5114] Workqueue: hci0 hci_rx_work
[  322.149637][ T5114] Call Trace:
[  322.149668][ T5114]  <TASK>
[  322.149691][ T5114]  dump_stack_lvl+0xe8/0x150
[  322.149818][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  322.149899][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  322.149979][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  322.150055][ T5114]  ? rt_spin_unlock+0x160/0x200
[  322.150130][ T5114]  kobject_add_internal+0x631/0xd10
[  322.150246][ T5114]  kobject_add+0x163/0x240
[  322.150345][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  322.150461][ T5114]  ? get_device_parent+0x370/0x3a0
[  322.150566][ T5114]  device_add+0x408/0xb80
[  322.150664][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  322.150748][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  322.150867][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  322.150958][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  322.151044][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  322.151141][ T5114]  ? skb_pull_data+0xfb/0x200
[  322.151215][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  322.151310][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  322.151407][ T5114]  hci_event_packet+0x7af/0x12c0
[  322.151490][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  322.151574][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  322.151671][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  322.151766][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  322.151861][ T5114]  hci_rx_work+0x3ee/0x1030
[  322.151950][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  322.152037][ T5114]  process_scheduled_works+0xb02/0x1830
[  322.152197][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  322.152323][ T5114]  ? assign_work+0x3d5/0x5e0
[  322.152421][ T5114]  worker_thread+0xa50/0xfc0
[  322.152582][ T5114]  kthread+0x388/0x470
[  322.152647][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  322.152723][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.152788][ T5114]  ret_from_fork+0x51e/0xb90
[  322.152884][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  322.152955][ T5114]  ? __switch_to+0xc7d/0x1450
[  322.153088][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.153170][ T5114]  ret_from_fork_asm+0x1a/0x30
[  322.153271][ T5114]  </TASK>
[  322.153355][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  322.153465][ T5114] Bluetooth: hci0: failed to register connection device
[  322.303751][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  322.303849][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  322.303924][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  322.303958][ T5114] Workqueue: hci0 hci_rx_work
[  322.304050][ T5114] Call Trace:
[  322.304079][ T5114]  <TASK>
[  322.304103][ T5114]  dump_stack_lvl+0xe8/0x150
[  322.304199][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  322.304273][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  322.304348][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  322.304425][ T5114]  ? rt_spin_unlock+0x160/0x200
[  322.304504][ T5114]  kobject_add_internal+0x631/0xd10
[  322.304622][ T5114]  kobject_add+0x163/0x240
[  322.304720][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  322.304838][ T5114]  ? get_device_parent+0x370/0x3a0
[  322.304938][ T5114]  device_add+0x408/0xb80
[  322.305302][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  322.305446][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  322.305584][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  322.305684][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  322.305779][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  322.305872][ T5114]  ? skb_pull_data+0xfb/0x200
[  322.305944][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  322.306051][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  322.306159][ T5114]  hci_event_packet+0x7af/0x12c0
[  322.306255][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  322.306354][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  322.306419][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  322.306512][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  322.306538][ T5114]  hci_rx_work+0x3ee/0x1030
[  322.306587][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  322.306622][ T5114]  process_scheduled_works+0xb02/0x1830
[  322.306681][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  322.306721][ T5114]  ? assign_work+0x3d5/0x5e0
[  322.306778][ T5114]  worker_thread+0xa50/0xfc0
[  322.306863][ T5114]  kthread+0x388/0x470
[  322.306994][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  322.307087][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.307160][ T5114]  ret_from_fork+0x51e/0xb90
[  322.307258][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  322.307343][ T5114]  ? __switch_to+0xc7d/0x1450
[  322.307438][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.307506][ T5114]  ret_from_fork_asm+0x1a/0x30
[  322.307613][ T5114]  </TASK>
[  322.308543][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  322.308679][ T5114] Bluetooth: hci0: failed to register connection device
[  322.493840][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  322.493916][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  322.493976][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  322.494017][ T5114] Workqueue: hci0 hci_rx_work
[  322.494111][ T5114] Call Trace:
[  322.494133][ T5114]  <TASK>
[  322.494157][ T5114]  dump_stack_lvl+0xe8/0x150
[  322.494253][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  322.494328][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  322.494395][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  322.494481][ T5114]  ? rt_spin_unlock+0x160/0x200
[  322.494555][ T5114]  kobject_add_internal+0x631/0xd10
[  322.494692][ T5114]  kobject_add+0x163/0x240
[  322.494804][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  322.494903][ T5114]  ? get_device_parent+0x370/0x3a0
[  322.495012][ T5114]  device_add+0x408/0xb80
[  322.495109][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  322.495192][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  322.495303][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  322.495400][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  322.495493][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  322.495572][ T5114]  ? skb_pull_data+0xfb/0x200
[  322.495645][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  322.495742][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  322.495839][ T5114]  hci_event_packet+0x7af/0x12c0
[  322.495937][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  322.496023][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  322.496109][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  322.496205][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  322.496267][ T5114]  hci_rx_work+0x3ee/0x1030
[  322.496349][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  322.496468][ T5114]  process_scheduled_works+0xb02/0x1830
[  322.496555][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  322.496593][ T5114]  ? assign_work+0x3d5/0x5e0
[  322.496628][ T5114]  worker_thread+0xa50/0xfc0
[  322.496688][ T5114]  kthread+0x388/0x470
[  322.496735][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  322.496810][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.496877][ T5114]  ret_from_fork+0x51e/0xb90
[  322.496959][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  322.497042][ T5114]  ? __switch_to+0xc7d/0x1450
[  322.497122][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.497186][ T5114]  ret_from_fork_asm+0x1a/0x30
[  322.497279][ T5114]  </TASK>
[  322.497782][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  322.497919][ T5114] Bluetooth: hci0: failed to register connection device
[  322.690453][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  322.690521][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  322.690593][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  322.690635][ T5114] Workqueue: hci0 hci_rx_work
[  322.690721][ T5114] Call Trace:
[  322.690750][ T5114]  <TASK>
[  322.690773][ T5114]  dump_stack_lvl+0xe8/0x150
[  322.690906][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  322.690979][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  322.691054][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  322.691130][ T5114]  ? rt_spin_unlock+0x160/0x200
[  322.691203][ T5114]  kobject_add_internal+0x631/0xd10
[  322.691319][ T5114]  kobject_add+0x163/0x240
[  322.691426][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  322.691533][ T5114]  ? get_device_parent+0x370/0x3a0
[  322.691638][ T5114]  device_add+0x408/0xb80
[  322.691735][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  322.691819][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  322.691934][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  322.692030][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  322.692118][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  322.692203][ T5114]  ? skb_pull_data+0xfb/0x200
[  322.692288][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  322.692391][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  322.692497][ T5114]  hci_event_packet+0x7af/0x12c0
[  322.692592][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  322.692677][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  322.692750][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  322.692840][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  322.692906][ T5114]  hci_rx_work+0x3ee/0x1030
[  322.693031][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  322.693125][ T5114]  process_scheduled_works+0xb02/0x1830
[  322.693290][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  322.693394][ T5114]  ? assign_work+0x3d5/0x5e0
[  322.693500][ T5114]  worker_thread+0xa50/0xfc0
[  322.693665][ T5114]  kthread+0x388/0x470
[  322.693730][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  322.693798][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.693840][ T5114]  ret_from_fork+0x51e/0xb90
[  322.693928][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  322.694020][ T5114]  ? __switch_to+0xc7d/0x1450
[  322.694111][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.694176][ T5114]  ret_from_fork_asm+0x1a/0x30
[  322.694280][ T5114]  </TASK>
[  322.694733][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  322.694838][ T5114] Bluetooth: hci0: failed to register connection device
[  322.928632][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  322.928660][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  322.928696][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  322.928716][ T5114] Workqueue: hci0 hci_rx_work
[  322.928748][ T5114] Call Trace:
[  322.928757][ T5114]  <TASK>
[  322.928767][ T5114]  dump_stack_lvl+0xe8/0x150
[  322.928804][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  322.928926][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  322.928955][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  322.928984][ T5114]  ? rt_spin_unlock+0x160/0x200
[  322.929084][ T5114]  kobject_add_internal+0x631/0xd10
[  322.929227][ T5114]  kobject_add+0x163/0x240
[  322.929338][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  322.929448][ T5114]  ? get_device_parent+0x370/0x3a0
[  322.929554][ T5114]  device_add+0x408/0xb80
[  322.929660][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  322.929756][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  322.929885][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  322.929980][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  322.930058][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  322.930151][ T5114]  ? skb_pull_data+0xfb/0x200
[  322.930230][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  322.930368][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  322.930490][ T5114]  hci_event_packet+0x7af/0x12c0
[  322.930588][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  322.930676][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  322.930743][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  322.930817][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  322.930856][ T5114]  hci_rx_work+0x3ee/0x1030
[  322.930966][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  322.931074][ T5114]  process_scheduled_works+0xb02/0x1830
[  322.931247][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  322.931350][ T5114]  ? assign_work+0x3d5/0x5e0
[  322.931445][ T5114]  worker_thread+0xa50/0xfc0
[  322.931613][ T5114]  kthread+0x388/0x470
[  322.931678][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  322.931762][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.931839][ T5114]  ret_from_fork+0x51e/0xb90
[  322.931938][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  322.932023][ T5114]  ? __switch_to+0xc7d/0x1450
[  322.932109][ T5114]  ? __pfx_kthread+0x10/0x10
[  322.932175][ T5114]  ret_from_fork_asm+0x1a/0x30
[  322.932283][ T5114]  </TASK>
[  322.933838][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  322.933975][ T5114] Bluetooth: hci0: failed to register connection device
[  323.201155][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  323.201228][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  323.201315][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  323.201372][ T5114] Workqueue: hci0 hci_rx_work
[  323.201466][ T5114] Call Trace:
[  323.201496][ T5114]  <TASK>
[  323.201519][ T5114]  dump_stack_lvl+0xe8/0x150
[  323.201615][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  323.201681][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  323.201755][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  323.201838][ T5114]  ? rt_spin_unlock+0x160/0x200
[  323.201892][ T5114]  kobject_add_internal+0x631/0xd10
[  323.202007][ T5114]  kobject_add+0x163/0x240
[  323.202114][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  323.202220][ T5114]  ? get_device_parent+0x370/0x3a0
[  323.202325][ T5114]  device_add+0x408/0xb80
[  323.202435][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  323.202579][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  323.202718][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  323.202827][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  323.202900][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  323.202994][ T5114]  ? skb_pull_data+0xfb/0x200
[  323.203060][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  323.203167][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  323.203265][ T5114]  hci_event_packet+0x7af/0x12c0
[  323.203371][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  323.203451][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  323.203523][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  323.203613][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  323.203686][ T5114]  hci_rx_work+0x3ee/0x1030
[  323.203784][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  323.203858][ T5114]  process_scheduled_works+0xb02/0x1830
[  323.204011][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  323.204143][ T5114]  ? assign_work+0x3d5/0x5e0
[  323.204245][ T5114]  worker_thread+0xa50/0xfc0
[  323.204440][ T5114]  kthread+0x388/0x470
[  323.204504][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  323.204587][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.204653][ T5114]  ret_from_fork+0x51e/0xb90
[  323.204740][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  323.204818][ T5114]  ? __switch_to+0xc7d/0x1450
[  323.204889][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.204963][ T5114]  ret_from_fork_asm+0x1a/0x30
[  323.205070][ T5114]  </TASK>
[  323.205403][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  323.205518][ T5114] Bluetooth: hci0: failed to register connection device
[  323.471942][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  323.472026][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  323.472099][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  323.472133][ T5114] Workqueue: hci0 hci_rx_work
[  323.472226][ T5114] Call Trace:
[  323.472249][ T5114]  <TASK>
[  323.472273][ T5114]  dump_stack_lvl+0xe8/0x150
[  323.472376][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  323.472472][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  323.472554][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  323.472638][ T5114]  ? rt_spin_unlock+0x160/0x200
[  323.472711][ T5114]  kobject_add_internal+0x631/0xd10
[  323.472828][ T5114]  kobject_add+0x163/0x240
[  323.472927][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  323.473036][ T5114]  ? get_device_parent+0x370/0x3a0
[  323.473135][ T5114]  device_add+0x408/0xb80
[  323.473232][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  323.473316][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  323.473443][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  323.473537][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  323.473620][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  323.473707][ T5114]  ? skb_pull_data+0xfb/0x200
[  323.473794][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  323.473921][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  323.474026][ T5114]  hci_event_packet+0x7af/0x12c0
[  323.474113][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  323.474197][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  323.474269][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  323.474356][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  323.474438][ T5114]  hci_rx_work+0x3ee/0x1030
[  323.474527][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  323.474620][ T5114]  process_scheduled_works+0xb02/0x1830
[  323.474778][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  323.474881][ T5114]  ? assign_work+0x3d5/0x5e0
[  323.475007][ T5114]  worker_thread+0xa50/0xfc0
[  323.475180][ T5114]  kthread+0x388/0x470
[  323.475264][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  323.475354][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.475430][ T5114]  ret_from_fork+0x51e/0xb90
[  323.475523][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  323.475599][ T5114]  ? __switch_to+0xc7d/0x1450
[  323.475684][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.475773][ T5114]  ret_from_fork_asm+0x1a/0x30
[  323.475877][ T5114]  </TASK>
[  323.476378][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  323.476495][ T5114] Bluetooth: hci0: failed to register connection device
[  323.712804][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  323.712872][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  323.712944][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  323.712979][ T5114] Workqueue: hci0 hci_rx_work
[  323.713072][ T5114] Call Trace:
[  323.713105][ T5114]  <TASK>
[  323.713135][ T5114]  dump_stack_lvl+0xe8/0x150
[  323.713240][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  323.713306][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  323.713388][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  323.713470][ T5114]  ? rt_spin_unlock+0x160/0x200
[  323.713533][ T5114]  kobject_add_internal+0x631/0xd10
[  323.713641][ T5114]  kobject_add+0x163/0x240
[  323.713752][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  323.713853][ T5114]  ? get_device_parent+0x370/0x3a0
[  323.713957][ T5114]  device_add+0x408/0xb80
[  323.714055][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  323.714137][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  323.714255][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  323.714353][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  323.714439][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  323.714523][ T5114]  ? skb_pull_data+0xfb/0x200
[  323.714599][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  323.714697][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  323.714795][ T5114]  hci_event_packet+0x7af/0x12c0
[  323.714875][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  323.714960][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  323.715040][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  323.715154][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  323.715227][ T5114]  hci_rx_work+0x3ee/0x1030
[  323.715324][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  323.715412][ T5114]  process_scheduled_works+0xb02/0x1830
[  323.715573][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  323.715671][ T5114]  ? assign_work+0x3d5/0x5e0
[  323.715792][ T5114]  worker_thread+0xa50/0xfc0
[  323.715945][ T5114]  kthread+0x388/0x470
[  323.716011][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  323.716092][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.716156][ T5114]  ret_from_fork+0x51e/0xb90
[  323.716243][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  323.716330][ T5114]  ? __switch_to+0xc7d/0x1450
[  323.716421][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.716516][ T5114]  ret_from_fork_asm+0x1a/0x30
[  323.716552][ T5114]  </TASK>
[  323.717159][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  323.717260][ T5114] Bluetooth: hci0: failed to register connection device
[  323.982418][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  323.982486][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  323.982560][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  323.982604][ T5114] Workqueue: hci0 hci_rx_work
[  323.982708][ T5114] Call Trace:
[  323.982731][ T5114]  <TASK>
[  323.982761][ T5114]  dump_stack_lvl+0xe8/0x150
[  323.982858][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  323.982963][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  323.983002][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  323.983030][ T5114]  ? rt_spin_unlock+0x160/0x200
[  323.983059][ T5114]  kobject_add_internal+0x631/0xd10
[  323.983101][ T5114]  kobject_add+0x163/0x240
[  323.983227][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  323.983342][ T5114]  ? get_device_parent+0x370/0x3a0
[  323.983449][ T5114]  device_add+0x408/0xb80
[  323.983555][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  323.983643][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  323.983772][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  323.983862][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  323.983946][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  323.984031][ T5114]  ? skb_pull_data+0xfb/0x200
[  323.984105][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  323.984194][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  323.984300][ T5114]  hci_event_packet+0x7af/0x12c0
[  323.984388][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  323.984476][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  323.984551][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  323.984666][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  323.984750][ T5114]  hci_rx_work+0x3ee/0x1030
[  323.984853][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  323.984940][ T5114]  process_scheduled_works+0xb02/0x1830
[  323.985101][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  323.985193][ T5114]  ? assign_work+0x3d5/0x5e0
[  323.985289][ T5114]  worker_thread+0xa50/0xfc0
[  323.985448][ T5114]  kthread+0x388/0x470
[  323.985514][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  323.985590][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.985661][ T5114]  ret_from_fork+0x51e/0xb90
[  323.985758][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  323.985835][ T5114]  ? __switch_to+0xc7d/0x1450
[  323.985922][ T5114]  ? __pfx_kthread+0x10/0x10
[  323.986003][ T5114]  ret_from_fork_asm+0x1a/0x30
[  323.986130][ T5114]  </TASK>
[  323.986340][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  323.986465][ T5114] Bluetooth: hci0: failed to register connection device
[  323.991388][ T5114] Bluetooth: hci0: command 0x0419 tx timeout
[  324.124042][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  324.124125][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  324.124191][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  324.124233][ T5114] Workqueue: hci0 hci_rx_work
[  324.124300][ T5114] Call Trace:
[  324.124323][ T5114]  <TASK>
[  324.124345][ T5114]  dump_stack_lvl+0xe8/0x150
[  324.124449][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  324.124525][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  324.124593][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  324.124675][ T5114]  ? rt_spin_unlock+0x160/0x200
[  324.124750][ T5114]  kobject_add_internal+0x631/0xd10
[  324.124870][ T5114]  kobject_add+0x163/0x240
[  324.124975][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  324.125110][ T5114]  ? get_device_parent+0x370/0x3a0
[  324.125223][ T5114]  device_add+0x408/0xb80
[  324.125325][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  324.125409][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  324.125527][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  324.125622][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  324.125700][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  324.125796][ T5114]  ? skb_pull_data+0xfb/0x200
[  324.125859][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  324.125955][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  324.126073][ T5114]  hci_event_packet+0x7af/0x12c0
[  324.126167][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  324.126252][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  324.126319][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  324.126406][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  324.126501][ T5114]  hci_rx_work+0x3ee/0x1030
[  324.126545][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  324.126579][ T5114]  process_scheduled_works+0xb02/0x1830
[  324.126688][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  324.126796][ T5114]  ? assign_work+0x3d5/0x5e0
[  324.126892][ T5114]  worker_thread+0xa50/0xfc0
[  324.127043][ T5114]  kthread+0x388/0x470
[  324.127114][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  324.127189][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.127254][ T5114]  ret_from_fork+0x51e/0xb90
[  324.127353][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  324.127430][ T5114]  ? __switch_to+0xc7d/0x1450
[  324.127515][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.127579][ T5114]  ret_from_fork_asm+0x1a/0x30
[  324.127686][ T5114]  </TASK>
[  324.128164][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  324.128331][ T5114] Bluetooth: hci0: failed to register connection device
[  324.285364][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  324.285442][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  324.285509][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  324.285544][ T5114] Workqueue: hci0 hci_rx_work
[  324.285639][ T5114] Call Trace:
[  324.285662][ T5114]  <TASK>
[  324.285693][ T5114]  dump_stack_lvl+0xe8/0x150
[  324.285790][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  324.285865][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  324.285938][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  324.286021][ T5114]  ? rt_spin_unlock+0x160/0x200
[  324.286089][ T5114]  kobject_add_internal+0x631/0xd10
[  324.286209][ T5114]  kobject_add+0x163/0x240
[  324.286352][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  324.286458][ T5114]  ? get_device_parent+0x370/0x3a0
[  324.286531][ T5114]  device_add+0x408/0xb80
[  324.286569][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  324.286600][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  324.286724][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  324.286820][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  324.286898][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  324.286984][ T5114]  ? skb_pull_data+0xfb/0x200
[  324.287059][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  324.287154][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  324.287239][ T5114]  hci_event_packet+0x7af/0x12c0
[  324.287333][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  324.287424][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  324.287491][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  324.287542][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  324.287569][ T5114]  hci_rx_work+0x3ee/0x1030
[  324.287701][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  324.287803][ T5114]  process_scheduled_works+0xb02/0x1830
[  324.287971][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  324.288072][ T5114]  ? assign_work+0x3d5/0x5e0
[  324.288169][ T5114]  worker_thread+0xa50/0xfc0
[  324.288325][ T5114]  kthread+0x388/0x470
[  324.288390][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  324.288466][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.288533][ T5114]  ret_from_fork+0x51e/0xb90
[  324.288623][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  324.288731][ T5114]  ? __switch_to+0xc7d/0x1450
[  324.288815][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.288887][ T5114]  ret_from_fork_asm+0x1a/0x30
[  324.288986][ T5114]  </TASK>
[  324.289494][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  324.289628][ T5114] Bluetooth: hci0: failed to register connection device
[  324.412614][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  324.412674][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  324.412746][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  324.412781][ T5114] Workqueue: hci0 hci_rx_work
[  324.412875][ T5114] Call Trace:
[  324.412899][ T5114]  <TASK>
[  324.412928][ T5114]  dump_stack_lvl+0xe8/0x150
[  324.413025][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  324.413098][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  324.413185][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  324.413261][ T5114]  ? rt_spin_unlock+0x160/0x200
[  324.413335][ T5114]  kobject_add_internal+0x631/0xd10
[  324.413450][ T5114]  kobject_add+0x163/0x240
[  324.413556][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  324.413672][ T5114]  ? get_device_parent+0x370/0x3a0
[  324.413811][ T5114]  device_add+0x408/0xb80
[  324.413908][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  324.413991][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  324.414109][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  324.414204][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  324.414289][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  324.414375][ T5114]  ? skb_pull_data+0xfb/0x200
[  324.414442][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  324.414537][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  324.414645][ T5114]  hci_event_packet+0x7af/0x12c0
[  324.414739][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  324.414827][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  324.414936][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  324.415024][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  324.415125][ T5114]  hci_rx_work+0x3ee/0x1030
[  324.415234][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  324.415329][ T5114]  process_scheduled_works+0xb02/0x1830
[  324.415487][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  324.415585][ T5114]  ? assign_work+0x3d5/0x5e0
[  324.415673][ T5114]  worker_thread+0xa50/0xfc0
[  324.415828][ T5114]  kthread+0x388/0x470
[  324.415900][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  324.415998][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.416062][ T5114]  ret_from_fork+0x51e/0xb90
[  324.416163][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  324.416238][ T5114]  ? __switch_to+0xc7d/0x1450
[  324.416323][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.416395][ T5114]  ret_from_fork_asm+0x1a/0x30
[  324.416515][ T5114]  </TASK>
[  324.416824][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  324.416944][ T5114] Bluetooth: hci0: failed to register connection device
[  324.621801][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  324.621892][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  324.621972][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  324.622014][ T5114] Workqueue: hci0 hci_rx_work
[  324.622101][ T5114] Call Trace:
[  324.622131][ T5114]  <TASK>
[  324.622154][ T5114]  dump_stack_lvl+0xe8/0x150
[  324.622261][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  324.622334][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  324.622409][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  324.622487][ T5114]  ? rt_spin_unlock+0x160/0x200
[  324.622563][ T5114]  kobject_add_internal+0x631/0xd10
[  324.622680][ T5114]  kobject_add+0x163/0x240
[  324.622783][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  324.622890][ T5114]  ? get_device_parent+0x370/0x3a0
[  324.622996][ T5114]  device_add+0x408/0xb80
[  324.623092][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  324.623185][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  324.623334][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  324.623442][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  324.623526][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  324.623605][ T5114]  ? skb_pull_data+0xfb/0x200
[  324.623679][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  324.623778][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  324.623877][ T5114]  hci_event_packet+0x7af/0x12c0
[  324.623973][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  324.624059][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  324.624126][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  324.624221][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  324.624304][ T5114]  hci_rx_work+0x3ee/0x1030
[  324.624393][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  324.624487][ T5114]  process_scheduled_works+0xb02/0x1830
[  324.624651][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  324.624771][ T5114]  ? assign_work+0x3d5/0x5e0
[  324.624873][ T5114]  worker_thread+0xa50/0xfc0
[  324.625025][ T5114]  kthread+0x388/0x470
[  324.625090][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  324.625166][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.625247][ T5114]  ret_from_fork+0x51e/0xb90
[  324.625336][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  324.625412][ T5114]  ? __switch_to+0xc7d/0x1450
[  324.625497][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.625561][ T5114]  ret_from_fork_asm+0x1a/0x30
[  324.625667][ T5114]  </TASK>
[  324.625748][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  324.625882][ T5114] Bluetooth: hci0: failed to register connection device
[  324.822531][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  324.822609][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  324.822676][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  324.822721][ T5114] Workqueue: hci0 hci_rx_work
[  324.822813][ T5114] Call Trace:
[  324.822850][ T5114]  <TASK>
[  324.822890][ T5114]  dump_stack_lvl+0xe8/0x150
[  324.823001][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  324.823068][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  324.823142][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  324.823260][ T5114]  ? rt_spin_unlock+0x160/0x200
[  324.823337][ T5114]  kobject_add_internal+0x631/0xd10
[  324.823455][ T5114]  kobject_add+0x163/0x240
[  324.823553][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  324.823661][ T5114]  ? get_device_parent+0x370/0x3a0
[  324.823771][ T5114]  device_add+0x408/0xb80
[  324.823869][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  324.823946][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  324.824063][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  324.824158][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  324.824259][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  324.824367][ T5114]  ? skb_pull_data+0xfb/0x200
[  324.824434][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  324.824525][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  324.824624][ T5114]  hci_event_packet+0x7af/0x12c0
[  324.824719][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  324.824790][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  324.824857][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  324.824951][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  324.825017][ T5114]  hci_rx_work+0x3ee/0x1030
[  324.825116][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  324.825204][ T5114]  process_scheduled_works+0xb02/0x1830
[  324.825402][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  324.825506][ T5114]  ? assign_work+0x3d5/0x5e0
[  324.825595][ T5114]  worker_thread+0xa50/0xfc0
[  324.825735][ T5114]  kthread+0x388/0x470
[  324.825755][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  324.825780][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.825847][ T5114]  ret_from_fork+0x51e/0xb90
[  324.825955][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  324.826038][ T5114]  ? __switch_to+0xc7d/0x1450
[  324.826109][ T5114]  ? __pfx_kthread+0x10/0x10
[  324.826174][ T5114]  ret_from_fork_asm+0x1a/0x30
[  324.826276][ T5114]  </TASK>
[  324.826370][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  324.826479][ T5114] Bluetooth: hci0: failed to register connection device
[  325.110165][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  325.110248][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  325.110315][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  325.110356][ T5114] Workqueue: hci0 hci_rx_work
[  325.110442][ T5114] Call Trace:
[  325.110471][ T5114]  <TASK>
[  325.110494][ T5114]  dump_stack_lvl+0xe8/0x150
[  325.110590][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  325.110663][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  325.110725][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  325.110803][ T5114]  ? rt_spin_unlock+0x160/0x200
[  325.110876][ T5114]  kobject_add_internal+0x631/0xd10
[  325.110992][ T5114]  kobject_add+0x163/0x240
[  325.111097][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  325.111207][ T5114]  ? get_device_parent+0x370/0x3a0
[  325.111306][ T5114]  device_add+0x408/0xb80
[  325.111414][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  325.111511][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  325.111643][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  325.111710][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  325.111737][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  325.111765][ T5114]  ? skb_pull_data+0xfb/0x200
[  325.111787][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  325.111879][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  325.111977][ T5114]  hci_event_packet+0x7af/0x12c0
[  325.112071][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  325.112157][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  325.112241][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  325.112328][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  325.112402][ T5114]  hci_rx_work+0x3ee/0x1030
[  325.112525][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  325.112612][ T5114]  process_scheduled_works+0xb02/0x1830
[  325.112781][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  325.112908][ T5114]  ? assign_work+0x3d5/0x5e0
[  325.113015][ T5114]  worker_thread+0xa50/0xfc0
[  325.113176][ T5114]  kthread+0x388/0x470
[  325.113250][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  325.113324][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.113398][ T5114]  ret_from_fork+0x51e/0xb90
[  325.113488][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  325.113570][ T5114]  ? __switch_to+0xc7d/0x1450
[  325.113650][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.113744][ T5114]  ret_from_fork_asm+0x1a/0x30
[  325.113851][ T5114]  </TASK>
[  325.113937][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  325.114052][ T5114] Bluetooth: hci0: failed to register connection device
[  325.393344][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  325.393418][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  325.393491][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  325.393529][ T5114] Workqueue: hci0 hci_rx_work
[  325.393625][ T5114] Call Trace:
[  325.393655][ T5114]  <TASK>
[  325.393678][ T5114]  dump_stack_lvl+0xe8/0x150
[  325.393775][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  325.393850][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  325.393924][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  325.394001][ T5114]  ? rt_spin_unlock+0x160/0x200
[  325.394079][ T5114]  kobject_add_internal+0x631/0xd10
[  325.394218][ T5114]  kobject_add+0x163/0x240
[  325.394324][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  325.394440][ T5114]  ? get_device_parent+0x370/0x3a0
[  325.394540][ T5114]  device_add+0x408/0xb80
[  325.394646][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  325.394729][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  325.394848][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  325.394944][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  325.395022][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  325.395115][ T5114]  ? skb_pull_data+0xfb/0x200
[  325.395147][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  325.395265][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  325.395374][ T5114]  hci_event_packet+0x7af/0x12c0
[  325.395469][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  325.395557][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  325.395631][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  325.395711][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  325.395736][ T5114]  hci_rx_work+0x3ee/0x1030
[  325.395796][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  325.395905][ T5114]  process_scheduled_works+0xb02/0x1830
[  325.396065][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  325.396170][ T5114]  ? assign_work+0x3d5/0x5e0
[  325.396264][ T5114]  worker_thread+0xa50/0xfc0
[  325.396419][ T5114]  kthread+0x388/0x470
[  325.396483][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  325.396535][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.396558][ T5114]  ret_from_fork+0x51e/0xb90
[  325.396607][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  325.396684][ T5114]  ? __switch_to+0xc7d/0x1450
[  325.396779][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.396853][ T5114]  ret_from_fork_asm+0x1a/0x30
[  325.396953][ T5114]  </TASK>
[  325.401273][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  325.401441][ T5114] Bluetooth: hci0: failed to register connection device
[  325.595214][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  325.595289][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  325.595354][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  325.595389][ T5114] Workqueue: hci0 hci_rx_work
[  325.595506][ T5114] Call Trace:
[  325.595530][ T5114]  <TASK>
[  325.595552][ T5114]  dump_stack_lvl+0xe8/0x150
[  325.595649][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  325.595727][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  325.595801][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  325.595876][ T5114]  ? rt_spin_unlock+0x160/0x200
[  325.595942][ T5114]  kobject_add_internal+0x631/0xd10
[  325.596059][ T5114]  kobject_add+0x163/0x240
[  325.596156][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  325.596271][ T5114]  ? get_device_parent+0x370/0x3a0
[  325.596377][ T5114]  device_add+0x408/0xb80
[  325.596475][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  325.596529][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  325.596573][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  325.596609][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  325.596704][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  325.596782][ T5114]  ? skb_pull_data+0xfb/0x200
[  325.596847][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  325.596941][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  325.597046][ T5114]  hci_event_packet+0x7af/0x12c0
[  325.597133][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  325.597228][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  325.597301][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  325.597388][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  325.597463][ T5114]  hci_rx_work+0x3ee/0x1030
[  325.597560][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  325.597612][ T5114]  process_scheduled_works+0xb02/0x1830
[  325.597768][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  325.597873][ T5114]  ? assign_work+0x3d5/0x5e0
[  325.597960][ T5114]  worker_thread+0xa50/0xfc0
[  325.598125][ T5114]  kthread+0x388/0x470
[  325.598210][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  325.598285][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.598356][ T5114]  ret_from_fork+0x51e/0xb90
[  325.598443][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  325.598520][ T5114]  ? __switch_to+0xc7d/0x1450
[  325.598613][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.598670][ T5114]  ret_from_fork_asm+0x1a/0x30
[  325.598770][ T5114]  </TASK>
[  325.599616][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  325.599738][ T5114] Bluetooth: hci0: failed to register connection device
[  325.778528][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  325.778605][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  325.778732][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  325.778774][ T5114] Workqueue: hci0 hci_rx_work
[  325.778922][ T5114] Call Trace:
[  325.778933][ T5114]  <TASK>
[  325.778943][ T5114]  dump_stack_lvl+0xe8/0x150
[  325.779028][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  325.779130][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  325.779222][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  325.779301][ T5114]  ? rt_spin_unlock+0x160/0x200
[  325.779380][ T5114]  kobject_add_internal+0x631/0xd10
[  325.779525][ T5114]  kobject_add+0x163/0x240
[  325.779627][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  325.779728][ T5114]  ? get_device_parent+0x370/0x3a0
[  325.779835][ T5114]  device_add+0x408/0xb80
[  325.779933][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  325.780016][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  325.780129][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  325.780237][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  325.780321][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  325.780414][ T5114]  ? skb_pull_data+0xfb/0x200
[  325.780480][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  325.780628][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  325.780765][ T5114]  hci_event_packet+0x7af/0x12c0
[  325.780852][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  325.780940][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  325.781014][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  325.781102][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  325.781177][ T5114]  hci_rx_work+0x3ee/0x1030
[  325.781283][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  325.781370][ T5114]  process_scheduled_works+0xb02/0x1830
[  325.781524][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  325.781629][ T5114]  ? assign_work+0x3d5/0x5e0
[  325.781682][ T5114]  worker_thread+0xa50/0xfc0
[  325.781741][ T5114]  kthread+0x388/0x470
[  325.781763][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  325.781848][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.781916][ T5114]  ret_from_fork+0x51e/0xb90
[  325.782021][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  325.782098][ T5114]  ? __switch_to+0xc7d/0x1450
[  325.782194][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.782303][ T5114]  ret_from_fork_asm+0x1a/0x30
[  325.782426][ T5114]  </TASK>
[  325.782534][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  325.782654][ T5114] Bluetooth: hci0: failed to register connection device
[  325.977409][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  325.977482][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  325.977547][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  325.977589][ T5114] Workqueue: hci0 hci_rx_work
[  325.977641][ T5114] Call Trace:
[  325.977650][ T5114]  <TASK>
[  325.977658][ T5114]  dump_stack_lvl+0xe8/0x150
[  325.977690][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  325.977759][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  325.977835][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  325.977911][ T5114]  ? rt_spin_unlock+0x160/0x200
[  325.977986][ T5114]  kobject_add_internal+0x631/0xd10
[  325.978096][ T5114]  kobject_add+0x163/0x240
[  325.978211][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  325.978320][ T5114]  ? get_device_parent+0x370/0x3a0
[  325.978419][ T5114]  device_add+0x408/0xb80
[  325.978525][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  325.978629][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  325.978765][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  325.978853][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  325.978937][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  325.979023][ T5114]  ? skb_pull_data+0xfb/0x200
[  325.979096][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  325.979187][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  325.979292][ T5114]  hci_event_packet+0x7af/0x12c0
[  325.979381][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  325.979469][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  325.979565][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  325.979645][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  325.979712][ T5114]  hci_rx_work+0x3ee/0x1030
[  325.979809][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  325.979898][ T5114]  process_scheduled_works+0xb02/0x1830
[  325.980096][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  325.980195][ T5114]  ? assign_work+0x3d5/0x5e0
[  325.980294][ T5114]  worker_thread+0xa50/0xfc0
[  325.980448][ T5114]  kthread+0x388/0x470
[  325.980514][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  325.980590][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.980649][ T5114]  ret_from_fork+0x51e/0xb90
[  325.980739][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  325.980823][ T5114]  ? __switch_to+0xc7d/0x1450
[  325.980900][ T5114]  ? __pfx_kthread+0x10/0x10
[  325.980973][ T5114]  ret_from_fork_asm+0x1a/0x30
[  325.981073][ T5114]  </TASK>
[  325.981176][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  325.981289][ T5114] Bluetooth: hci0: failed to register connection device
[  326.068629][ T5114] Bluetooth: hci0: command 0x0419 tx timeout
[  326.089730][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  326.089811][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  326.089911][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  326.089957][ T5114] Workqueue: hci0 hci_rx_work
[  326.089990][ T5114] Call Trace:
[  326.089999][ T5114]  <TASK>
[  326.090017][ T5114]  dump_stack_lvl+0xe8/0x150
[  326.090133][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  326.090210][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  326.090285][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  326.090362][ T5114]  ? rt_spin_unlock+0x160/0x200
[  326.090441][ T5114]  kobject_add_internal+0x631/0xd10
[  326.090559][ T5114]  kobject_add+0x163/0x240
[  326.090668][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  326.090776][ T5114]  ? get_device_parent+0x370/0x3a0
[  326.090884][ T5114]  device_add+0x408/0xb80
[  326.090981][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  326.091068][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  326.091179][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  326.091275][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  326.091353][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  326.091438][ T5114]  ? skb_pull_data+0xfb/0x200
[  326.091516][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  326.091640][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  326.091751][ T5114]  hci_event_packet+0x7af/0x12c0
[  326.091844][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  326.091929][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  326.091997][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  326.092085][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  326.092154][ T5114]  hci_rx_work+0x3ee/0x1030
[  326.092243][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  326.092336][ T5114]  process_scheduled_works+0xb02/0x1830
[  326.092491][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  326.092596][ T5114]  ? assign_work+0x3d5/0x5e0
[  326.092724][ T5114]  worker_thread+0xa50/0xfc0
[  326.092884][ T5114]  kthread+0x388/0x470
[  326.092957][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  326.093033][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.093113][ T5114]  ret_from_fork+0x51e/0xb90
[  326.093224][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  326.093300][ T5114]  ? __switch_to+0xc7d/0x1450
[  326.093386][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.093451][ T5114]  ret_from_fork_asm+0x1a/0x30
[  326.093558][ T5114]  </TASK>
[  326.093668][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  326.093784][ T5114] Bluetooth: hci0: failed to register connection device
[  326.253604][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  326.253628][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  326.253691][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  326.253734][ T5114] Workqueue: hci0 hci_rx_work
[  326.253820][ T5114] Call Trace:
[  326.253842][ T5114]  <TASK>
[  326.253865][ T5114]  dump_stack_lvl+0xe8/0x150
[  326.253962][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  326.254048][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  326.254115][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  326.254211][ T5114]  ? rt_spin_unlock+0x160/0x200
[  326.254278][ T5114]  kobject_add_internal+0x631/0xd10
[  326.254397][ T5114]  kobject_add+0x163/0x240
[  326.254495][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  326.254628][ T5114]  ? get_device_parent+0x370/0x3a0
[  326.254736][ T5114]  device_add+0x408/0xb80
[  326.254834][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  326.254917][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  326.255174][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  326.255277][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  326.255361][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  326.255447][ T5114]  ? skb_pull_data+0xfb/0x200
[  326.255523][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  326.255608][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  326.255672][ T5114]  hci_event_packet+0x7af/0x12c0
[  326.255782][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  326.255874][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  326.255948][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  326.256112][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  326.256282][ T5114]  hci_rx_work+0x3ee/0x1030
[  326.256404][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  326.256502][ T5114]  process_scheduled_works+0xb02/0x1830
[  326.256579][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  326.256627][ T5114]  ? assign_work+0x3d5/0x5e0
[  326.256677][ T5114]  worker_thread+0xa50/0xfc0
[  326.256880][ T5114]  kthread+0x388/0x470
[  326.257002][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  326.257076][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.257173][ T5114]  ret_from_fork+0x51e/0xb90
[  326.257416][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  326.257491][ T5114]  ? __switch_to+0xc7d/0x1450
[  326.257582][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.257626][ T5114]  ret_from_fork_asm+0x1a/0x30
[  326.257663][ T5114]  </TASK>
[  326.258408][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  326.258538][ T5114] Bluetooth: hci0: failed to register connection device
[  326.554493][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  326.554563][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  326.554631][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  326.554672][ T5114] Workqueue: hci0 hci_rx_work
[  326.554760][ T5114] Call Trace:
[  326.554789][ T5114]  <TASK>
[  326.554812][ T5114]  dump_stack_lvl+0xe8/0x150
[  326.554908][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  326.554983][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  326.555065][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  326.555143][ T5114]  ? rt_spin_unlock+0x160/0x200
[  326.555217][ T5114]  kobject_add_internal+0x631/0xd10
[  326.555334][ T5114]  kobject_add+0x163/0x240
[  326.555432][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  326.555522][ T5114]  ? get_device_parent+0x370/0x3a0
[  326.555616][ T5114]  device_add+0x408/0xb80
[  326.555715][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  326.555778][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  326.555895][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  326.555988][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  326.556019][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  326.556099][ T5114]  ? skb_pull_data+0xfb/0x200
[  326.556187][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  326.556290][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  326.556395][ T5114]  hci_event_packet+0x7af/0x12c0
[  326.556484][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  326.556532][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  326.556558][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  326.556592][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  326.556626][ T5114]  hci_rx_work+0x3ee/0x1030
[  326.556721][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  326.556808][ T5114]  process_scheduled_works+0xb02/0x1830
[  326.556969][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  326.557073][ T5114]  ? assign_work+0x3d5/0x5e0
[  326.557169][ T5114]  worker_thread+0xa50/0xfc0
[  326.557314][ T5114]  kthread+0x388/0x470
[  326.557379][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  326.557455][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.557533][ T5114]  ret_from_fork+0x51e/0xb90
[  326.557652][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  326.557728][ T5114]  ? __switch_to+0xc7d/0x1450
[  326.557812][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.557878][ T5114]  ret_from_fork_asm+0x1a/0x30
[  326.557985][ T5114]  </TASK>
[  326.558499][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  326.558606][ T5114] Bluetooth: hci0: failed to register connection device
[  326.888948][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  326.889023][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  326.889089][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  326.889124][ T5114] Workqueue: hci0 hci_rx_work
[  326.889210][ T5114] Call Trace:
[  326.889220][ T5114]  <TASK>
[  326.889229][ T5114]  dump_stack_lvl+0xe8/0x150
[  326.889314][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  326.889413][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  326.889494][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  326.889578][ T5114]  ? rt_spin_unlock+0x160/0x200
[  326.889654][ T5114]  kobject_add_internal+0x631/0xd10
[  326.889773][ T5114]  kobject_add+0x163/0x240
[  326.889878][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  326.889985][ T5114]  ? get_device_parent+0x370/0x3a0
[  326.890093][ T5114]  device_add+0x408/0xb80
[  326.890189][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  326.890271][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  326.890392][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  326.890508][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  326.890593][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  326.890673][ T5114]  ? skb_pull_data+0xfb/0x200
[  326.890741][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  326.890858][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  326.890967][ T5114]  hci_event_packet+0x7af/0x12c0
[  326.891062][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  326.891141][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  326.891216][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  326.891303][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  326.891370][ T5114]  hci_rx_work+0x3ee/0x1030
[  326.891466][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  326.891552][ T5114]  process_scheduled_works+0xb02/0x1830
[  326.891720][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  326.891820][ T5114]  ? assign_work+0x3d5/0x5e0
[  326.891917][ T5114]  worker_thread+0xa50/0xfc0
[  326.892070][ T5114]  kthread+0x388/0x470
[  326.892139][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  326.892243][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.892323][ T5114]  ret_from_fork+0x51e/0xb90
[  326.892418][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  326.892494][ T5114]  ? __switch_to+0xc7d/0x1450
[  326.892579][ T5114]  ? __pfx_kthread+0x10/0x10
[  326.892782][ T5114]  ret_from_fork_asm+0x1a/0x30
[  326.892920][ T5114]  </TASK>
[  326.893046][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  326.893152][ T5114] Bluetooth: hci0: failed to register connection device
[  327.169770][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  327.169836][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  327.169910][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  327.169952][ T5114] Workqueue: hci0 hci_rx_work
[  327.170038][ T5114] Call Trace:
[  327.170069][ T5114]  <TASK>
[  327.170150][ T5114]  dump_stack_lvl+0xe8/0x150
[  327.170268][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  327.170335][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  327.170410][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  327.170487][ T5114]  ? rt_spin_unlock+0x160/0x200
[  327.170561][ T5114]  kobject_add_internal+0x631/0xd10
[  327.170671][ T5114]  kobject_add+0x163/0x240
[  327.170807][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  327.170917][ T5114]  ? get_device_parent+0x370/0x3a0
[  327.171024][ T5114]  device_add+0x408/0xb80
[  327.171176][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  327.171255][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  327.171373][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  327.171470][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  327.171556][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  327.171645][ T5114]  ? skb_pull_data+0xfb/0x200
[  327.171711][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  327.171806][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  327.171913][ T5114]  hci_event_packet+0x7af/0x12c0
[  327.172017][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  327.172135][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  327.172210][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  327.172296][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  327.172364][ T5114]  hci_rx_work+0x3ee/0x1030
[  327.172460][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  327.172546][ T5114]  process_scheduled_works+0xb02/0x1830
[  327.172703][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  327.172818][ T5114]  ? assign_work+0x3d5/0x5e0
[  327.172914][ T5114]  worker_thread+0xa50/0xfc0
[  327.173066][ T5114]  kthread+0x388/0x470
[  327.173136][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  327.173225][ T5114]  ? __pfx_kthread+0x10/0x10
[  327.173314][ T5114]  ret_from_fork+0x51e/0xb90
[  327.173411][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  327.173487][ T5114]  ? __switch_to+0xc7d/0x1450
[  327.173572][ T5114]  ? __pfx_kthread+0x10/0x10
[  327.173630][ T5114]  ret_from_fork_asm+0x1a/0x30
[  327.173736][ T5114]  </TASK>
[  327.173820][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  327.173935][ T5114] Bluetooth: hci0: failed to register connection device
[  327.335843][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  327.335929][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  327.335982][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  327.336025][ T5114] Workqueue: hci0 hci_rx_work
[  327.336113][ T5114] Call Trace:
[  327.336137][ T5114]  <TASK>
[  327.336160][ T5114]  dump_stack_lvl+0xe8/0x150
[  327.336257][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  327.336351][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  327.336427][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  327.336510][ T5114]  ? rt_spin_unlock+0x160/0x200
[  327.336537][ T5114]  kobject_add_internal+0x631/0xd10
[  327.336582][ T5114]  kobject_add+0x163/0x240
[  327.336621][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  327.336713][ T5114]  ? get_device_parent+0x370/0x3a0
[  327.336844][ T5114]  device_add+0x408/0xb80
[  327.336923][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  327.337007][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  327.337127][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  327.337224][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  327.337302][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  327.337390][ T5114]  ? skb_pull_data+0xfb/0x200
[  327.337460][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  327.337564][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  327.337665][ T5114]  hci_event_packet+0x7af/0x12c0
[  327.337754][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  327.337840][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  327.337916][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  327.337990][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  327.338064][ T5114]  hci_rx_work+0x3ee/0x1030
[  327.338210][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  327.338311][ T5114]  process_scheduled_works+0xb02/0x1830
[  327.338468][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  327.338589][ T5114]  ? assign_work+0x3d5/0x5e0
[  327.338678][ T5114]  worker_thread+0xa50/0xfc0
[  327.338831][ T5114]  kthread+0x388/0x470
[  327.338896][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  327.338957][ T5114]  ? __pfx_kthread+0x10/0x10
[  327.339038][ T5114]  ret_from_fork+0x51e/0xb90
[  327.339127][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  327.339204][ T5114]  ? __switch_to+0xc7d/0x1450
[  327.339301][ T5114]  ? __pfx_kthread+0x10/0x10
[  327.339386][ T5114]  ret_from_fork_asm+0x1a/0x30
[  327.339503][ T5114]  </TASK>
[  327.346669][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  327.346721][ T5114] Bluetooth: hci0: failed to register connection device
[  327.462154][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
[  327.462231][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  327.462298][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  327.462341][ T5114] Workqueue: hci0 hci_rx_work
[  327.462430][ T5114] Call Trace:
[  327.462453][ T5114]  <TASK>
[  327.462475][ T5114]  dump_stack_lvl+0xe8/0x150
[  327.462582][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  327.462657][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  327.462724][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  327.462802][ T5114]  ? rt_spin_unlock+0x160/0x200
[  327.462877][ T5114]  kobject_add_internal+0x631/0xd10
[  327.463003][ T5114]  kobject_add+0x163/0x240
[  327.463096][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  327.463206][ T5114]  ? get_device_parent+0x370/0x3a0
[  327.463302][ T5114]  device_add+0x408/0xb80
[  327.463401][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  327.463503][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  327.463630][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  327.463720][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  327.463799][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  327.463886][ T5114]  ? skb_pull_data+0xfb/0x200
[  327.463962][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  327.464038][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  327.464145][ T5114]  hci_event_packet+0x7af/0x12c0
[  327.464234][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  327.464320][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  327.464389][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  327.464529][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  327.464597][ T5114]  hci_rx_work+0x3ee/0x1030
[  327.464696][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  327.464791][ T5114]  process_scheduled_works+0xb02/0x1830
[  327.465005][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  327.465097][ T5114]  ? assign_work+0x3d5/0x5e0
[  327.465193][ T5114]  worker_thread+0xa50/0xfc0
[  327.465353][ T5114]  kthread+0x388/0x470
[  327.465418][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  327.465495][ T5114]  ? __pfx_kthread+0x10/0x10
[  327.465570][ T5114]  ret_from_fork+0x51e/0xb90
[  327.465677][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  327.465755][ T5114]  ? __switch_to+0xc7d/0x1450
[  327.465841][ T5114]  ? __pfx_kthread+0x10/0x10
[  327.465907][ T5114]  ret_from_fork_asm+0x1a/0x30
[  327.466037][ T5114]  </TASK>
[  327.466122][ T5114] kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  327.466224][ T5114] Bluetooth: hci0: failed to register connection device
[  327.950612][   T60] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1
[  327.975100][   T60] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9
[  327.979753][   T60] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9
[  327.992523][   T60] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4
[  327.994754][   T60] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2
[  328.146705][   T60] Bluetooth: hci0: command 0x0419 tx timeout
[  329.074780][ T7229] chnl_net:caif_netlink_parms(): no params data found
[  329.651953][ T7229] bridge0: port 1(bridge_slave_0) entered blocking state
[  329.652442][ T7229] bridge0: port 1(bridge_slave_0) entered disabled state
[  329.652953][ T7229] bridge_slave_0: entered allmulticast mode
[  329.662737][ T7229] bridge_slave_0: entered promiscuous mode
[  329.684131][ T7229] bridge0: port 2(bridge_slave_1) entered blocking state
[  329.684771][ T7229] bridge0: port 2(bridge_slave_1) entered disabled state
[  329.690807][ T7229] bridge_slave_1: entered allmulticast mode
[  329.699955][ T7229] bridge_slave_1: entered promiscuous mode
[  329.863563][ T7229] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  329.883846][ T7229] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[  330.028129][ T7229] team0: Port device team_slave_0 added
[  330.041298][ T7229] team0: Port device team_slave_1 added
[  330.066817][   T60] Bluetooth: hci1: command tx timeout
[  330.214413][ T7229] batman_adv: batadv0: Adding interface: batadv_slave_0
[  330.214481][ T7229] 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 1532 would solve the problem.
[  330.214574][ T7229] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[  330.224834][ T7229] batman_adv: batadv0: Adding interface: batadv_slave_1
[  330.224895][ T7229] 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 1532 would solve the problem.
[  330.224991][ T7229] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[  330.481467][ T7229] hsr_slave_0: entered promiscuous mode
[  330.485949][ T7229] hsr_slave_1: entered promiscuous mode
[  331.766131][ T7229] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  332.159539][   T60] Bluetooth: hci1: command tx timeout
[  332.191326][ T7229] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  332.477675][ T7229] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  332.773503][ T7229] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  333.544492][ T7229] netdevsim netdevsim0 netdevsim0: renamed from eth0
[  333.589268][ T7229] netdevsim netdevsim0 netdevsim1: renamed from eth1
[  333.633732][ T7229] netdevsim netdevsim0 netdevsim2: renamed from eth2
[  333.695903][ T7229] netdevsim netdevsim0 netdevsim3: renamed from eth3
[  334.227975][   T60] Bluetooth: hci1: command tx timeout
[  334.324404][ T7229] 8021q: adding VLAN 0 to HW filter on device bond0
[  334.437413][ T7229] 8021q: adding VLAN 0 to HW filter on device team0
[  334.487472][   T43] bridge0: port 1(bridge_slave_0) entered blocking state
[  334.487898][   T43] bridge0: port 1(bridge_slave_0) entered forwarding state
[  334.554793][ T1184] bridge0: port 2(bridge_slave_1) entered blocking state
[  334.555158][ T1184] bridge0: port 2(bridge_slave_1) entered forwarding state
[  335.951144][ T7229] 8021q: adding VLAN 0 to HW filter on device batadv0
[  336.252826][ T7229] veth0_vlan: entered promiscuous mode
[  336.294250][ T7229] veth1_vlan: entered promiscuous mode
[  336.307376][   T60] Bluetooth: hci1: command tx timeout
[  336.509812][ T7229] veth0_macvtap: entered promiscuous mode
[  336.544845][ T7229] veth1_macvtap: entered promiscuous mode
[  336.785142][ T7229] batman_adv: batadv0: Interface activated: batadv_slave_0
[  336.901346][ T7229] batman_adv: batadv0: Interface activated: batadv_slave_1
[  336.946598][   T43] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  336.947370][   T43] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  336.947489][   T43] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  336.947596][   T43] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[  338.007027][ T7229] ieee80211 phy7: Selected rate control algorithm 'minstrel_ht'
[  339.172159][  T165] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  339.172234][  T165] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  339.240603][ T7229] ieee80211 phy8: Selected rate control algorithm 'minstrel_ht'
[  339.921318][   T68] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  339.921384][   T68] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  340.496028][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  340.496103][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  340.496175][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  340.496210][ T5114] Workqueue: hci1 hci_rx_work
[  340.496307][ T5114] Call Trace:
[  340.496337][ T5114]  <TASK>
[  340.496360][ T5114]  dump_stack_lvl+0xe8/0x150
[  340.496451][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  340.496507][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  340.496533][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  340.496562][ T5114]  ? rt_spin_unlock+0x160/0x200
[  340.496590][ T5114]  kobject_add_internal+0x631/0xd10
[  340.496643][ T5114]  kobject_add+0x163/0x240
[  340.496749][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  340.496857][ T5114]  ? get_device_parent+0x370/0x3a0
[  340.496967][ T5114]  device_add+0x408/0xb80
[  340.497088][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  340.497187][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  340.497306][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  340.497393][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  340.497472][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  340.497557][ T5114]  ? skb_pull_data+0xfb/0x200
[  340.497630][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  340.497725][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  340.497823][ T5114]  hci_event_packet+0x7af/0x12c0
[  340.497923][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  340.498017][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  340.498093][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  340.498180][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  340.498259][ T5114]  hci_rx_work+0x3ee/0x1030
[  340.498356][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  340.498444][ T5114]  process_scheduled_works+0xb02/0x1830
[  340.498612][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  340.498708][ T5114]  ? assign_work+0x3d5/0x5e0
[  340.498762][ T5114]  worker_thread+0xa50/0xfc0
[  340.498935][ T5114]  kthread+0x388/0x470
[  340.499007][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  340.499084][ T5114]  ? __pfx_kthread+0x10/0x10
[  340.499149][ T5114]  ret_from_fork+0x51e/0xb90
[  340.499243][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  340.499319][ T5114]  ? __switch_to+0xc7d/0x1450
[  340.499398][ T5114]  ? __pfx_kthread+0x10/0x10
[  340.499464][ T5114]  ret_from_fork_asm+0x1a/0x30
[  340.499564][ T5114]  </TASK>
[  340.505099][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  340.505248][ T5114] Bluetooth: hci1: failed to register connection device
[  340.751353][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  340.751430][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  340.751503][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  340.751538][ T5114] Workqueue: hci1 hci_rx_work
[  340.751634][ T5114] Call Trace:
[  340.751656][ T5114]  <TASK>
[  340.751686][ T5114]  dump_stack_lvl+0xe8/0x150
[  340.751795][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  340.751862][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  340.751937][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  340.752020][ T5114]  ? rt_spin_unlock+0x160/0x200
[  340.752094][ T5114]  kobject_add_internal+0x631/0xd10
[  340.752178][ T5114]  kobject_add+0x163/0x240
[  340.752317][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  340.752431][ T5114]  ? get_device_parent+0x370/0x3a0
[  340.752536][ T5114]  device_add+0x408/0xb80
[  340.752634][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  340.752718][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  340.752843][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  340.752930][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  340.753008][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  340.753093][ T5114]  ? skb_pull_data+0xfb/0x200
[  340.753168][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  340.753257][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  340.753356][ T5114]  hci_event_packet+0x7af/0x12c0
[  340.753443][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  340.753530][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  340.753604][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  340.753710][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  340.753799][ T5114]  hci_rx_work+0x3ee/0x1030
[  340.753895][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  340.753981][ T5114]  process_scheduled_works+0xb02/0x1830
[  340.754133][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  340.754231][ T5114]  ? assign_work+0x3d5/0x5e0
[  340.754321][ T5114]  worker_thread+0xa50/0xfc0
[  340.754480][ T5114]  kthread+0x388/0x470
[  340.754536][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  340.754611][ T5114]  ? __pfx_kthread+0x10/0x10
[  340.754682][ T5114]  ret_from_fork+0x51e/0xb90
[  340.754789][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  340.754865][ T5114]  ? __switch_to+0xc7d/0x1450
[  340.754951][ T5114]  ? __pfx_kthread+0x10/0x10
[  340.755030][ T5114]  ret_from_fork_asm+0x1a/0x30
[  340.755148][ T5114]  </TASK>
[  340.755223][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  340.755324][ T5114] Bluetooth: hci1: failed to register connection device
[  340.958153][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  340.958262][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  340.958343][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  340.958400][ T5114] Workqueue: hci1 hci_rx_work
[  340.958513][ T5114] Call Trace:
[  340.958547][ T5114]  <TASK>
[  340.958589][ T5114]  dump_stack_lvl+0xe8/0x150
[  340.958712][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  340.958795][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  340.958870][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  340.958955][ T5114]  ? rt_spin_unlock+0x160/0x200
[  340.959038][ T5114]  kobject_add_internal+0x631/0xd10
[  340.959169][ T5114]  kobject_add+0x163/0x240
[  340.959287][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  340.959426][ T5114]  ? get_device_parent+0x370/0x3a0
[  340.959542][ T5114]  device_add+0x408/0xb80
[  340.959659][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  340.959759][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  340.959879][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  340.959918][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  340.960031][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  340.960140][ T5114]  ? skb_pull_data+0xfb/0x200
[  340.960214][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  340.960345][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  340.960464][ T5114]  hci_event_packet+0x7af/0x12c0
[  340.960570][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  340.960666][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  340.960749][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  340.960861][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  340.960942][ T5114]  hci_rx_work+0x3ee/0x1030
[  340.961050][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  340.961156][ T5114]  process_scheduled_works+0xb02/0x1830
[  340.961340][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  340.961490][ T5114]  ? assign_work+0x3d5/0x5e0
[  340.961610][ T5114]  worker_thread+0xa50/0xfc0
[  340.961793][ T5114]  kthread+0x388/0x470
[  340.961848][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  340.961927][ T5114]  ? __pfx_kthread+0x10/0x10
[  340.961993][ T5114]  ret_from_fork+0x51e/0xb90
[  340.962101][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  340.962185][ T5114]  ? __switch_to+0xc7d/0x1450
[  340.962288][ T5114]  ? __pfx_kthread+0x10/0x10
[  340.962370][ T5114]  ret_from_fork_asm+0x1a/0x30
[  340.962480][ T5114]  </TASK>
[  340.962573][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  340.962690][ T5114] Bluetooth: hci1: failed to register connection device
[  341.131570][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  341.131670][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  341.131744][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  341.131792][ T5114] Workqueue: hci1 hci_rx_work
[  341.131903][ T5114] Call Trace:
[  341.131937][ T5114]  <TASK>
[  341.131971][ T5114]  dump_stack_lvl+0xe8/0x150
[  341.132041][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  341.132144][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  341.132254][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  341.132350][ T5114]  ? rt_spin_unlock+0x160/0x200
[  341.132418][ T5114]  kobject_add_internal+0x631/0xd10
[  341.132557][ T5114]  kobject_add+0x163/0x240
[  341.132677][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  341.132797][ T5114]  ? get_device_parent+0x370/0x3a0
[  341.132926][ T5114]  device_add+0x408/0xb80
[  341.133043][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  341.133138][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  341.133271][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  341.133370][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  341.133457][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  341.133597][ T5114]  ? skb_pull_data+0xfb/0x200
[  341.133687][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  341.133827][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  341.133957][ T5114]  hci_event_packet+0x7af/0x12c0
[  341.134088][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  341.134184][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  341.134266][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  341.134356][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  341.134438][ T5114]  hci_rx_work+0x3ee/0x1030
[  341.134537][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  341.134641][ T5114]  process_scheduled_works+0xb02/0x1830
[  341.134818][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  341.134939][ T5114]  ? assign_work+0x3d5/0x5e0
[  341.135059][ T5114]  worker_thread+0xa50/0xfc0
[  341.135280][ T5114]  kthread+0x388/0x470
[  341.135351][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  341.135451][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.135524][ T5114]  ret_from_fork+0x51e/0xb90
[  341.135630][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  341.135723][ T5114]  ? __switch_to+0xc7d/0x1450
[  341.135819][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.135904][ T5114]  ret_from_fork_asm+0x1a/0x30
[  341.136025][ T5114]  </TASK>
[  341.146951][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  341.147081][ T5114] Bluetooth: hci1: failed to register connection device
[  341.311954][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  341.312049][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  341.312114][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  341.312149][ T5114] Workqueue: hci1 hci_rx_work
[  341.312248][ T5114] Call Trace:
[  341.312266][ T5114]  <TASK>
[  341.312290][ T5114]  dump_stack_lvl+0xe8/0x150
[  341.312386][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  341.312459][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  341.312557][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  341.312634][ T5114]  ? rt_spin_unlock+0x160/0x200
[  341.312709][ T5114]  kobject_add_internal+0x631/0xd10
[  341.312834][ T5114]  kobject_add+0x163/0x240
[  341.312871][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  341.312963][ T5114]  ? get_device_parent+0x370/0x3a0
[  341.313100][ T5114]  device_add+0x408/0xb80
[  341.313205][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  341.313283][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  341.313401][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  341.313495][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  341.313600][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  341.313678][ T5114]  ? skb_pull_data+0xfb/0x200
[  341.313750][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  341.313857][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  341.313962][ T5114]  hci_event_packet+0x7af/0x12c0
[  341.314043][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  341.314129][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  341.314200][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  341.314299][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  341.314382][ T5114]  hci_rx_work+0x3ee/0x1030
[  341.314503][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  341.314598][ T5114]  process_scheduled_works+0xb02/0x1830
[  341.314755][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  341.314852][ T5114]  ? assign_work+0x3d5/0x5e0
[  341.314949][ T5114]  worker_thread+0xa50/0xfc0
[  341.315106][ T5114]  kthread+0x388/0x470
[  341.315170][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  341.315245][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.315321][ T5114]  ret_from_fork+0x51e/0xb90
[  341.315410][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  341.315492][ T5114]  ? __switch_to+0xc7d/0x1450
[  341.315576][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.315665][ T5114]  ret_from_fork_asm+0x1a/0x30
[  341.315797][ T5114]  </TASK>
[  341.315902][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  341.315999][ T5114] Bluetooth: hci1: failed to register connection device
[  341.504920][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  341.504995][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  341.505063][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  341.505106][ T5114] Workqueue: hci1 hci_rx_work
[  341.505223][ T5114] Call Trace:
[  341.505253][ T5114]  <TASK>
[  341.505284][ T5114]  dump_stack_lvl+0xe8/0x150
[  341.505381][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  341.505447][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  341.505520][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  341.505595][ T5114]  ? rt_spin_unlock+0x160/0x200
[  341.505670][ T5114]  kobject_add_internal+0x631/0xd10
[  341.505780][ T5114]  kobject_add+0x163/0x240
[  341.505897][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  341.506004][ T5114]  ? get_device_parent+0x370/0x3a0
[  341.506103][ T5114]  device_add+0x408/0xb80
[  341.506207][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  341.506285][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  341.506394][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  341.506489][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  341.506530][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  341.506561][ T5114]  ? skb_pull_data+0xfb/0x200
[  341.506602][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  341.506706][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  341.506806][ T5114]  hci_event_packet+0x7af/0x12c0
[  341.506901][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  341.506988][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  341.507069][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  341.507127][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  341.507171][ T5114]  hci_rx_work+0x3ee/0x1030
[  341.507305][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  341.507394][ T5114]  process_scheduled_works+0xb02/0x1830
[  341.507555][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  341.507658][ T5114]  ? assign_work+0x3d5/0x5e0
[  341.507795][ T5114]  worker_thread+0xa50/0xfc0
[  341.507965][ T5114]  kthread+0x388/0x470
[  341.508030][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  341.508116][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.508207][ T5114]  ret_from_fork+0x51e/0xb90
[  341.508303][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  341.508471][ T5114]  ? __switch_to+0xc7d/0x1450
[  341.508579][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.508654][ T5114]  ret_from_fork_asm+0x1a/0x30
[  341.508770][ T5114]  </TASK>
[  341.510708][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  341.510870][ T5114] Bluetooth: hci1: failed to register connection device
[  341.693252][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  341.693334][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  341.693421][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  341.693468][ T5114] Workqueue: hci1 hci_rx_work
[  341.693563][ T5114] Call Trace:
[  341.693587][ T5114]  <TASK>
[  341.693617][ T5114]  dump_stack_lvl+0xe8/0x150
[  341.693707][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  341.693781][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  341.693849][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  341.693932][ T5114]  ? rt_spin_unlock+0x160/0x200
[  341.694006][ T5114]  kobject_add_internal+0x631/0xd10
[  341.694123][ T5114]  kobject_add+0x163/0x240
[  341.694232][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  341.694340][ T5114]  ? get_device_parent+0x370/0x3a0
[  341.694447][ T5114]  device_add+0x408/0xb80
[  341.694553][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  341.694637][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  341.694773][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  341.694888][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  341.694965][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  341.695051][ T5114]  ? skb_pull_data+0xfb/0x200
[  341.695125][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  341.695222][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  341.695329][ T5114]  hci_event_packet+0x7af/0x12c0
[  341.695417][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  341.695509][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  341.695574][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  341.695667][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  341.695734][ T5114]  hci_rx_work+0x3ee/0x1030
[  341.695824][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  341.695919][ T5114]  process_scheduled_works+0xb02/0x1830
[  341.696071][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  341.696176][ T5114]  ? assign_work+0x3d5/0x5e0
[  341.696265][ T5114]  worker_thread+0xa50/0xfc0
[  341.696434][ T5114]  kthread+0x388/0x470
[  341.696508][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  341.696536][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.696561][ T5114]  ret_from_fork+0x51e/0xb90
[  341.696637][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  341.696708][ T5114]  ? __switch_to+0xc7d/0x1450
[  341.696794][ T5114]  ? __pfx_kthread+0x10/0x10
[  341.696859][ T5114]  ret_from_fork_asm+0x1a/0x30
[  341.696966][ T5114]  </TASK>
[  341.697270][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  341.697378][ T5114] Bluetooth: hci1: failed to register connection device
[  342.001593][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  342.001685][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  342.001769][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  342.001815][ T5114] Workqueue: hci1 hci_rx_work
[  342.001912][ T5114] Call Trace:
[  342.001939][ T5114]  <TASK>
[  342.001973][ T5114]  dump_stack_lvl+0xe8/0x150
[  342.002105][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  342.002206][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  342.002288][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  342.002381][ T5114]  ? rt_spin_unlock+0x160/0x200
[  342.002465][ T5114]  kobject_add_internal+0x631/0xd10
[  342.002594][ T5114]  kobject_add+0x163/0x240
[  342.002723][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  342.002850][ T5114]  ? get_device_parent+0x370/0x3a0
[  342.002969][ T5114]  device_add+0x408/0xb80
[  342.003076][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  342.003182][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  342.003313][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  342.003422][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  342.003516][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  342.003610][ T5114]  ? skb_pull_data+0xfb/0x200
[  342.003707][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  342.003796][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  342.003860][ T5114]  hci_event_packet+0x7af/0x12c0
[  342.003972][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  342.004086][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  342.004161][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  342.004258][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  342.004340][ T5114]  hci_rx_work+0x3ee/0x1030
[  342.004446][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  342.004547][ T5114]  process_scheduled_works+0xb02/0x1830
[  342.004735][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  342.004851][ T5114]  ? assign_work+0x3d5/0x5e0
[  342.004999][ T5114]  worker_thread+0xa50/0xfc0
[  342.005170][ T5114]  kthread+0x388/0x470
[  342.005241][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  342.005341][ T5114]  ? __pfx_kthread+0x10/0x10
[  342.005429][ T5114]  ret_from_fork+0x51e/0xb90
[  342.005514][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  342.005605][ T5114]  ? __switch_to+0xc7d/0x1450
[  342.005712][ T5114]  ? __pfx_kthread+0x10/0x10
[  342.005785][ T5114]  ret_from_fork_asm+0x1a/0x30
[  342.005902][ T5114]  </TASK>
[  342.005994][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  342.006102][ T5114] Bluetooth: hci1: failed to register connection device
[  342.231695][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  342.231764][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  342.231838][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  342.231874][ T5114] Workqueue: hci1 hci_rx_work
[  342.231971][ T5114] Call Trace:
[  342.232000][ T5114]  <TASK>
[  342.232023][ T5114]  dump_stack_lvl+0xe8/0x150
[  342.232120][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  342.232194][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  342.232271][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  342.232371][ T5114]  ? rt_spin_unlock+0x160/0x200
[  342.232465][ T5114]  kobject_add_internal+0x631/0xd10
[  342.232583][ T5114]  kobject_add+0x163/0x240
[  342.232667][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  342.232760][ T5114]  ? get_device_parent+0x370/0x3a0
[  342.232854][ T5114]  device_add+0x408/0xb80
[  342.232952][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  342.233037][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  342.233156][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  342.233270][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  342.233366][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  342.233459][ T5114]  ? skb_pull_data+0xfb/0x200
[  342.233526][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  342.233628][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  342.233726][ T5114]  hci_event_packet+0x7af/0x12c0
[  342.233815][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  342.233922][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  342.234010][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  342.234105][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  342.234172][ T5114]  hci_rx_work+0x3ee/0x1030
[  342.234271][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  342.234365][ T5114]  process_scheduled_works+0xb02/0x1830
[  342.234525][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  342.234622][ T5114]  ? assign_work+0x3d5/0x5e0
[  342.234720][ T5114]  worker_thread+0xa50/0xfc0
[  342.234866][ T5114]  kthread+0x388/0x470
[  342.234933][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  342.235016][ T5114]  ? __pfx_kthread+0x10/0x10
[  342.235082][ T5114]  ret_from_fork+0x51e/0xb90
[  342.235223][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  342.235271][ T5114]  ? __switch_to+0xc7d/0x1450
[  342.235380][ T5114]  ? __pfx_kthread+0x10/0x10
[  342.235459][ T5114]  ret_from_fork_asm+0x1a/0x30
[  342.235573][ T5114]  </TASK>
[  342.235914][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  342.236023][ T5114] Bluetooth: hci1: failed to register connection device
[  342.323818][ T5114] Bluetooth: hci1: command 0x2016 tx timeout
[  343.167336][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  343.167404][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  343.167478][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  343.167520][ T5114] Workqueue: hci1 hci_rx_work
[  343.167613][ T5114] Call Trace:
[  343.167637][ T5114]  <TASK>
[  343.167676][ T5114]  dump_stack_lvl+0xe8/0x150
[  343.167800][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  343.167909][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  343.167991][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  343.168067][ T5114]  ? rt_spin_unlock+0x160/0x200
[  343.168142][ T5114]  kobject_add_internal+0x631/0xd10
[  343.168252][ T5114]  kobject_add+0x163/0x240
[  343.168356][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  343.168463][ T5114]  ? get_device_parent+0x370/0x3a0
[  343.168566][ T5114]  device_add+0x408/0xb80
[  343.168675][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  343.168761][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  343.168880][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  343.168974][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  343.169052][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  343.169137][ T5114]  ? skb_pull_data+0xfb/0x200
[  343.169196][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  343.169273][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  343.169312][ T5114]  hci_event_packet+0x7af/0x12c0
[  343.169417][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  343.169518][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  343.169591][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  343.169686][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  343.169754][ T5114]  hci_rx_work+0x3ee/0x1030
[  343.169849][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  343.169944][ T5114]  process_scheduled_works+0xb02/0x1830
[  343.170097][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  343.170205][ T5114]  ? assign_work+0x3d5/0x5e0
[  343.170295][ T5114]  worker_thread+0xa50/0xfc0
[  343.170454][ T5114]  kthread+0x388/0x470
[  343.170519][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  343.170595][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.170675][ T5114]  ret_from_fork+0x51e/0xb90
[  343.170762][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  343.170865][ T5114]  ? __switch_to+0xc7d/0x1450
[  343.170965][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.171031][ T5114]  ret_from_fork_asm+0x1a/0x30
[  343.171136][ T5114]  </TASK>
[  343.171227][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  343.171333][ T5114] Bluetooth: hci1: failed to register connection device
[  343.173010][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  343.173064][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  343.173134][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  343.173183][ T5114] Workqueue: hci1 hci_rx_work
[  343.173265][ T5114] Call Trace:
[  343.173289][ T5114]  <TASK>
[  343.173311][ T5114]  dump_stack_lvl+0xe8/0x150
[  343.173405][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  343.173486][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  343.173551][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  343.173635][ T5114]  ? rt_spin_unlock+0x160/0x200
[  343.173735][ T5114]  kobject_add_internal+0x631/0xd10
[  343.173851][ T5114]  kobject_add+0x163/0x240
[  343.173955][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  343.174054][ T5114]  ? get_device_parent+0x370/0x3a0
[  343.174159][ T5114]  device_add+0x408/0xb80
[  343.174266][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  343.174341][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  343.174465][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  343.174560][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  343.174643][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  343.174708][ T5114]  ? skb_pull_data+0xfb/0x200
[  343.174791][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  343.174917][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  343.175015][ T5114]  hci_event_packet+0x7af/0x12c0
[  343.175105][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  343.175184][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  343.175256][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  343.175342][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  343.175413][ T5114]  hci_rx_work+0x3ee/0x1030
[  343.175507][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  343.175593][ T5114]  process_scheduled_works+0xb02/0x1830
[  343.175753][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  343.175851][ T5114]  ? assign_work+0x3d5/0x5e0
[  343.175946][ T5114]  worker_thread+0xa50/0xfc0
[  343.176096][ T5114]  kthread+0x388/0x470
[  343.176170][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  343.176265][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.176344][ T5114]  ret_from_fork+0x51e/0xb90
[  343.176450][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  343.176516][ T5114]  ? __switch_to+0xc7d/0x1450
[  343.176545][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.176569][ T5114]  ret_from_fork_asm+0x1a/0x30
[  343.176605][ T5114]  </TASK>
[  343.177170][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  343.177269][ T5114] Bluetooth: hci1: failed to register connection device
[  343.178812][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  343.178875][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  343.178939][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  343.178981][ T5114] Workqueue: hci1 hci_rx_work
[  343.179080][ T5114] Call Trace:
[  343.179103][ T5114]  <TASK>
[  343.179128][ T5114]  dump_stack_lvl+0xe8/0x150
[  343.179226][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  343.179293][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  343.179366][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  343.179473][ T5114]  ? rt_spin_unlock+0x160/0x200
[  343.179500][ T5114]  kobject_add_internal+0x631/0xd10
[  343.179595][ T5114]  kobject_add+0x163/0x240
[  343.179721][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  343.179826][ T5114]  ? get_device_parent+0x370/0x3a0
[  343.179924][ T5114]  device_add+0x408/0xb80
[  343.180041][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  343.180125][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  343.180245][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  343.180342][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  343.180420][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  343.180514][ T5114]  ? skb_pull_data+0xfb/0x200
[  343.180581][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  343.180687][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  343.180788][ T5114]  hci_event_packet+0x7af/0x12c0
[  343.180886][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  343.180973][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  343.181046][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  343.181193][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  343.181280][ T5114]  hci_rx_work+0x3ee/0x1030
[  343.181371][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  343.181457][ T5114]  process_scheduled_works+0xb02/0x1830
[  343.181616][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  343.181729][ T5114]  ? assign_work+0x3d5/0x5e0
[  343.181840][ T5114]  worker_thread+0xa50/0xfc0
[  343.182002][ T5114]  kthread+0x388/0x470
[  343.182067][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  343.182143][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.182201][ T5114]  ret_from_fork+0x51e/0xb90
[  343.182289][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  343.182371][ T5114]  ? __switch_to+0xc7d/0x1450
[  343.182455][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.182520][ T5114]  ret_from_fork_asm+0x1a/0x30
[  343.182618][ T5114]  </TASK>
[  343.182730][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  343.182841][ T5114] Bluetooth: hci1: failed to register connection device
[  343.184305][ T5114] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:0'
[  343.184366][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  343.184444][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  343.184487][ T5114] Workqueue: hci1 hci_rx_work
[  343.184555][ T5114] Call Trace:
[  343.184606][ T5114]  <TASK>
[  343.184636][ T5114]  dump_stack_lvl+0xe8/0x150
[  343.184724][ T5114]  sysfs_create_dir_ns+0x271/0x2a0
[  343.184797][ T5114]  ? __pfx_rt_mutex_slowunlock+0x10/0x10
[  343.184863][ T5114]  ? __pfx_sysfs_create_dir_ns+0x10/0x10
[  343.184947][ T5114]  ? rt_spin_unlock+0x160/0x200
[  343.185015][ T5114]  kobject_add_internal+0x631/0xd10
[  343.185131][ T5114]  kobject_add+0x163/0x240
[  343.185224][ T5114]  ? __pfx_kobject_add+0x10/0x10
[  343.185325][ T5114]  ? get_device_parent+0x370/0x3a0
[  343.185428][ T5114]  device_add+0x408/0xb80
[  343.185525][ T5114]  hci_conn_add_sysfs+0xd5/0x210
[  343.185601][ T5114]  le_conn_complete_evt+0xf1d/0x1430
[  343.185735][ T5114]  ? __pfx_le_conn_complete_evt+0x10/0x10
[  343.185822][ T5114]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[  343.185905][ T5114]  ? lockdep_hardirqs_on+0x7a/0x110
[  343.185962][ T5114]  ? skb_pull_data+0xfb/0x200
[  343.186052][ T5114]  hci_le_enh_conn_complete_evt+0x189/0x490
[  343.186164][ T5114]  ? __pfx_hci_le_enh_conn_complete_evt+0x10/0x10
[  343.186272][ T5114]  hci_event_packet+0x7af/0x12c0
[  343.186366][ T5114]  ? __pfx_hci_le_meta_evt+0x10/0x10
[  343.186451][ T5114]  ? __pfx_hci_event_packet+0x10/0x10
[  343.186512][ T5114]  ? rt_spin_unlock+0x14f/0x200
[  343.186543][ T5114]  ? hci_send_to_monitor+0xe2/0x590
[  343.186568][ T5114]  hci_rx_work+0x3ee/0x1030
[  343.186602][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  343.186635][ T5114]  process_scheduled_works+0xb02/0x1830
[  343.186703][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  343.186741][ T5114]  ? assign_work+0x3d5/0x5e0
[  343.186778][ T5114]  worker_thread+0xa50/0xfc0
[  343.186839][ T5114]  kthread+0x388/0x470
[  343.186864][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  343.186893][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.186917][ T5114]  ret_from_fork+0x51e/0xb90
[  343.186952][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  343.186983][ T5114]  ? __switch_to+0xc7d/0x1450
[  343.187016][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.187042][ T5114]  ret_from_fork_asm+0x1a/0x30
[  343.187082][ T5114]  </TASK>
[  343.188742][ T5114] kobject: kobject_add_internal failed for hci1:0 with -EEXIST, don't try to register things with the same name in the same directory.
[  343.188786][ T5114] Bluetooth: hci1: failed to register connection device
[  343.190073][ T5114] ------------[ cut here ]------------
[  343.190084][ T5114] refcnt < 0
[  343.190101][ T5114] WARNING: net/bluetooth/hci_conn.c:567 at hci_conn_timeout+0xff/0x2c0, CPU#1: kworker/u9:1/5114
[  343.190145][ T5114] Modules linked in:
[  343.190165][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  343.190192][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  343.190208][ T5114] Workqueue: hci1 hci_conn_timeout
[  343.190235][ T5114] RIP: 0010:hci_conn_timeout+0xff/0x2c0
[  343.190263][ T5114] Code: 48 89 df e8 f3 99 09 00 eb 07 e8 6c b7 ae f7 b0 13 0f b6 f0 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 07 a9 fe ff e8 52 b7 ae f7 90 <0f> 0b 90 eb 8c 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 31 ff ff ff
[  343.190285][ T5114] RSP: 0018:ffffc90011077ad0 EFLAGS: 00010293
[  343.190305][ T5114] RAX: ffffffff8a159c7e RBX: ffff88804061c000 RCX: ffff8880376b0000
[  343.190323][ T5114] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[  343.190338][ T5114] RBP: 00000000fffffffc R08: 0000000000000000 R09: 0000000000000000
[  343.190354][ T5114] R10: dffffc0000000000 R11: ffffed10080c3803 R12: dffffc0000000000
[  343.190372][ T5114] R13: ffff8880374bcb18 R14: ffff88804061cac0 R15: ffff88804061c010
[  343.190391][ T5114] FS:  0000000000000000(0000) GS:ffff88812643f000(0000) knlGS:0000000000000000
[  343.190412][ T5114] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  343.190429][ T5114] CR2: 000055555c786a28 CR3: 00000000397ce000 CR4: 00000000003526f0
[  343.190450][ T5114] Call Trace:
[  343.190459][ T5114]  <TASK>
[  343.190469][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  343.190506][ T5114]  process_scheduled_works+0xb02/0x1830
[  343.190567][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  343.190607][ T5114]  ? assign_work+0x3d5/0x5e0
[  343.190640][ T5114]  worker_thread+0xa50/0xfc0
[  343.190709][ T5114]  kthread+0x388/0x470
[  343.190735][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  343.190765][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.190791][ T5114]  ret_from_fork+0x51e/0xb90
[  343.190827][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  343.190859][ T5114]  ? __switch_to+0xc7d/0x1450
[  343.190892][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.190918][ T5114]  ret_from_fork_asm+0x1a/0x30
[  343.190957][ T5114]  </TASK>
[  343.190970][ T5114] Kernel panic - not syncing: kernel: panic_on_warn set ...
[  343.190986][ T5114] CPU: 1 UID: 0 PID: 5114 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
[  343.191011][ T5114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/27/2026
[  343.191030][ T5114] Workqueue: hci1 hci_conn_timeout
[  343.191056][ T5114] Call Trace:
[  343.191065][ T5114]  <TASK>
[  343.191075][ T5114]  vpanic+0x56c/0xa60
[  343.191110][ T5114]  ? __pfx__printk+0x10/0x10
[  343.191135][ T5114]  ? __pfx_vpanic+0x10/0x10
[  343.191167][ T5114]  ? is_bpf_text_address+0x292/0x2b0
[  343.191199][ T5114]  ? is_bpf_text_address+0x26/0x2b0
[  343.191240][ T5114]  panic+0xc5/0xd0
[  343.191273][ T5114]  ? __pfx_panic+0x10/0x10
[  343.191317][ T5114]  ? ret_from_fork_asm+0x1a/0x30
[  343.191343][ T5114]  __warn+0x315/0x4f0
[  343.191374][ T5114]  ? hci_conn_timeout+0xff/0x2c0
[  343.191402][ T5114]  ? hci_conn_timeout+0xff/0x2c0
[  343.191430][ T5114]  __report_bug+0x29a/0x540
[  343.191468][ T5114]  ? hci_conn_timeout+0xff/0x2c0
[  343.191496][ T5114]  ? __pfx___report_bug+0x10/0x10
[  343.191524][ T5114]  ? register_lock_class+0x31/0x2e0
[  343.191563][ T5114]  ? __lock_acquire+0x6b5/0x2cf0
[  343.191592][ T5114]  ? hci_conn_timeout+0xff/0x2c0
[  343.191618][ T5114]  report_bug+0x16a/0x220
[  343.191649][ T5114]  ? hci_conn_timeout+0xff/0x2c0
[  343.191682][ T5114]  ? hci_conn_timeout+0x101/0x2c0
[  343.191707][ T5114]  handle_bug+0x9c/0x200
[  343.191744][ T5114]  exc_invalid_op+0x1a/0x50
[  343.191780][ T5114]  asm_exc_invalid_op+0x1a/0x20
[  343.191803][ T5114] RIP: 0010:hci_conn_timeout+0xff/0x2c0
[  343.191830][ T5114] Code: 48 89 df e8 f3 99 09 00 eb 07 e8 6c b7 ae f7 b0 13 0f b6 f0 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 07 a9 fe ff e8 52 b7 ae f7 90 <0f> 0b 90 eb 8c 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 31 ff ff ff
[  343.191851][ T5114] RSP: 0018:ffffc90011077ad0 EFLAGS: 00010293
[  343.191871][ T5114] RAX: ffffffff8a159c7e RBX: ffff88804061c000 RCX: ffff8880376b0000
[  343.191889][ T5114] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[  343.191904][ T5114] RBP: 00000000fffffffc R08: 0000000000000000 R09: 0000000000000000
[  343.191919][ T5114] R10: dffffc0000000000 R11: ffffed10080c3803 R12: dffffc0000000000
[  343.191939][ T5114] R13: ffff8880374bcb18 R14: ffff88804061cac0 R15: ffff88804061c010
[  343.191966][ T5114]  ? hci_conn_timeout+0xfe/0x2c0
[  343.192001][ T5114]  ? process_scheduled_works+0xa25/0x1830
[  343.192034][ T5114]  process_scheduled_works+0xb02/0x1830
[  343.192094][ T5114]  ? __pfx_process_scheduled_works+0x10/0x10
[  343.192134][ T5114]  ? assign_work+0x3d5/0x5e0
[  343.192172][ T5114]  worker_thread+0xa50/0xfc0
[  343.192234][ T5114]  kthread+0x388/0x470
[  343.192258][ T5114]  ? __pfx_worker_thread+0x10/0x10
[  343.192290][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.192317][ T5114]  ret_from_fork+0x51e/0xb90
[  343.192350][ T5114]  ? __pfx_ret_from_fork+0x10/0x10
[  343.192378][ T5114]  ? __switch_to+0xc7d/0x1450
[  343.192512][ T5114]  ? __pfx_kthread+0x10/0x10
[  343.192628][ T5114]  ret_from_fork_asm+0x1a/0x30
[  343.192768][ T5114]  </TASK>
[  343.193410][ T5114] Kernel Offset: disabled