ame name in the same directory.
[ 341.116462][ T4292] Bluetooth: hci1: failed to register connection device
[ 341.141848][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 341.151595][ T4292] CPU: 1 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 341.159399][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 341.170187][ T4292] Workqueue: hci1 hci_rx_work
[ 341.175006][ T4292] Call Trace:
[ 341.178297][ T4292]
[ 341.181343][ T4292] dump_stack_lvl+0x188/0x250
[ 341.186248][ T4292] ? show_regs_print_info+0x20/0x20
[ 341.191469][ T4292] ? load_image+0x410/0x410
[ 341.196048][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 341.201200][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 341.205883][ T4292] ? kthread+0x42e/0x520
[ 341.210160][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 341.215409][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 341.220666][ T4292] kobject_add+0x160/0x230
[ 341.225305][ T4292] ? kobject_init+0x1c0/0x1c0
[ 341.230135][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 341.235460][ T4292] ? klist_children_get+0x50/0x50
[ 341.240624][ T4292] ? get_device_parent+0x121/0x3e0
[ 341.246261][ T4292] device_add+0x470/0x1050
[ 341.250734][ T4292] ? device_initialize+0x2a5/0x4d0
[ 341.255882][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 341.260936][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 341.266395][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 341.272183][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 341.278954][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 341.283914][ T4292] ? hci_event_packet+0x363/0x1310
[ 341.289338][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 341.294611][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 341.300694][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 341.306800][ T4292] ? mark_lock+0x94/0x320
[ 341.311523][ T4292] ? mutex_unlock+0x10/0x10
[ 341.316250][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 341.322256][ T4292] ? lock_chain_count+0x20/0x20
[ 341.327216][ T4292] ? __rwlock_init+0x140/0x140
[ 341.331998][ T4292] hci_event_packet+0xe0b/0x1310
[ 341.337082][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 341.341986][ T4292] ? rcu_lock_release+0x20/0x20
[ 341.346959][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 341.352220][ T4292] hci_rx_work+0x255/0xa10
[ 341.357107][ T4292] process_one_work+0x867/0xff0
[ 341.362143][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 341.367909][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 341.373225][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 341.378311][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 341.384015][ T4292] ? wq_worker_running+0x97/0x170
[ 341.389340][ T4292] worker_thread+0xad7/0x12a0
[ 341.394153][ T4292] kthread+0x42e/0x520
[ 341.398343][ T4292] ? rcu_lock_release+0x20/0x20
[ 341.403376][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 341.407987][ T4292] ret_from_fork+0x1f/0x30
[ 341.412453][ T4292]
[ 341.416697][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 341.430825][ T4292] Bluetooth: hci1: failed to register connection device
[ 341.453641][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 341.463326][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 341.471266][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 341.481467][ T146] Workqueue: hci1 hci_rx_work
[ 341.486187][ T146] Call Trace:
[ 341.489474][ T146]
[ 341.492527][ T146] dump_stack_lvl+0x188/0x250
[ 341.497236][ T146] ? show_regs_print_info+0x20/0x20
[ 341.502520][ T146] ? load_image+0x410/0x410
[ 341.507062][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 341.512322][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 341.517122][ T146] ? kthread+0x42e/0x520
[ 341.521642][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 341.527287][ T146] kobject_add_internal+0x5ba/0xcd0
[ 341.532605][ T146] kobject_add+0x160/0x230
[ 341.537100][ T146] ? kobject_init+0x1c0/0x1c0
[ 341.541990][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 341.547391][ T146] ? klist_children_get+0x50/0x50
[ 341.552631][ T146] ? get_device_parent+0x121/0x3e0
[ 341.557899][ T146] device_add+0x470/0x1050
[ 341.562506][ T146] ? device_initialize+0x2a5/0x4d0
[ 341.567830][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 341.572896][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 341.578429][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 341.583803][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 341.589614][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 341.594652][ T146] ? hci_event_packet+0x363/0x1310
[ 341.599823][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 341.605089][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 341.611207][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 341.616896][ T146] ? mark_lock+0x94/0x320
[ 341.621253][ T146] ? mutex_unlock+0x10/0x10
[ 341.626043][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 341.632065][ T146] ? lock_chain_count+0x20/0x20
[ 341.637010][ T146] ? __rwlock_init+0x140/0x140
[ 341.641866][ T146] hci_event_packet+0xe0b/0x1310
[ 341.646845][ T146] ? _raw_spin_unlock+0x40/0x40
[ 341.651750][ T146] ? rcu_lock_release+0x20/0x20
[ 341.656827][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 341.662137][ T146] hci_rx_work+0x255/0xa10
[ 341.666670][ T146] process_one_work+0x867/0xff0
[ 341.671569][ T146] ? worker_detach_from_pool+0x240/0x240
[ 341.677256][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 341.684477][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 341.689529][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 341.695102][ T146] ? wq_worker_running+0x97/0x170
[ 341.700257][ T146] worker_thread+0xad7/0x12a0
[ 341.705149][ T146] kthread+0x42e/0x520
[ 341.709279][ T146] ? rcu_lock_release+0x20/0x20
[ 341.714177][ T146] ? kthread_blkcg+0xd0/0xd0
[ 341.718920][ T146] ret_from_fork+0x1f/0x30
[ 341.723504][ T146]
[ 341.729057][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 341.743236][ T146] Bluetooth: hci1: failed to register connection device
[ 341.771952][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 341.781625][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 341.789229][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 341.799302][ T146] Workqueue: hci1 hci_rx_work
[ 341.804486][ T146] Call Trace:
[ 341.807965][ T146]
[ 341.810903][ T146] dump_stack_lvl+0x188/0x250
[ 341.815689][ T146] ? show_regs_print_info+0x20/0x20
[ 341.821085][ T146] ? load_image+0x410/0x410
[ 341.825650][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 341.830941][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 341.835778][ T146] ? kthread+0x42e/0x520
[ 341.840228][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 341.845491][ T146] kobject_add_internal+0x5ba/0xcd0
[ 341.851110][ T146] kobject_add+0x160/0x230
[ 341.855683][ T146] ? kobject_init+0x1c0/0x1c0
[ 341.860519][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 341.865826][ T146] ? klist_children_get+0x50/0x50
[ 341.870880][ T146] ? get_device_parent+0x121/0x3e0
[ 341.876121][ T146] device_add+0x470/0x1050
[ 341.881144][ T146] ? device_initialize+0x2a5/0x4d0
[ 341.886310][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 341.891298][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 341.897396][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 341.902553][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 341.908162][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 341.913134][ T146] ? hci_event_packet+0x363/0x1310
[ 341.918277][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 341.923347][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 341.929636][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 341.935322][ T146] ? mark_lock+0x94/0x320
[ 341.939747][ T146] ? mutex_unlock+0x10/0x10
[ 341.944480][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 341.950733][ T146] ? lock_chain_count+0x20/0x20
[ 341.955657][ T146] ? __rwlock_init+0x140/0x140
[ 341.960509][ T146] hci_event_packet+0xe0b/0x1310
[ 341.966037][ T146] ? _raw_spin_unlock+0x40/0x40
[ 341.971058][ T146] ? rcu_lock_release+0x20/0x20
[ 341.976073][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 341.981445][ T146] hci_rx_work+0x255/0xa10
[ 341.986027][ T146] process_one_work+0x867/0xff0
[ 341.990939][ T146] ? worker_detach_from_pool+0x240/0x240
[ 341.996934][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 342.002340][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 342.007402][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 342.012997][ T146] ? wq_worker_running+0x97/0x170
[ 342.018293][ T146] worker_thread+0xad7/0x12a0
[ 342.023138][ T146] kthread+0x42e/0x520
[ 342.027270][ T146] ? rcu_lock_release+0x20/0x20
[ 342.032825][ T146] ? kthread_blkcg+0xd0/0xd0
[ 342.037561][ T146] ret_from_fork+0x1f/0x30
[ 342.042407][ T146]
[ 342.050083][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 342.064283][ T146] Bluetooth: hci1: failed to register connection device
[ 342.094308][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 342.104263][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 342.111793][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 342.121984][ T146] Workqueue: hci1 hci_rx_work
[ 342.126816][ T146] Call Trace:
[ 342.130282][ T146]
[ 342.133247][ T146] dump_stack_lvl+0x188/0x250
[ 342.137954][ T146] ? show_regs_print_info+0x20/0x20
[ 342.143181][ T146] ? load_image+0x410/0x410
[ 342.148129][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 342.153561][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 342.158476][ T146] ? kthread+0x42e/0x520
[ 342.162843][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 342.168093][ T146] kobject_add_internal+0x5ba/0xcd0
[ 342.173906][ T146] kobject_add+0x160/0x230
[ 342.178480][ T146] ? kobject_init+0x1c0/0x1c0
[ 342.183389][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 342.188744][ T146] ? klist_children_get+0x50/0x50
[ 342.193899][ T146] ? get_device_parent+0x121/0x3e0
[ 342.199173][ T146] device_add+0x470/0x1050
[ 342.203637][ T146] ? device_initialize+0x2a5/0x4d0
[ 342.208803][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 342.213955][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 342.219277][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 342.224478][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 342.230137][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 342.235205][ T146] ? hci_event_packet+0x363/0x1310
[ 342.240339][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 342.245677][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 342.252154][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 342.258404][ T146] ? mark_lock+0x94/0x320
[ 342.262808][ T146] ? mutex_unlock+0x10/0x10
[ 342.267375][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 342.273525][ T146] ? lock_chain_count+0x20/0x20
[ 342.278577][ T146] ? __rwlock_init+0x140/0x140
[ 342.283497][ T146] hci_event_packet+0xe0b/0x1310
[ 342.288610][ T146] ? _raw_spin_unlock+0x40/0x40
[ 342.293499][ T146] ? rcu_lock_release+0x20/0x20
[ 342.299071][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 342.304414][ T146] hci_rx_work+0x255/0xa10
[ 342.308897][ T146] process_one_work+0x867/0xff0
[ 342.313797][ T146] ? worker_detach_from_pool+0x240/0x240
[ 342.319638][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 342.324966][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 342.330038][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 342.335608][ T146] ? wq_worker_running+0x97/0x170
[ 342.340760][ T146] worker_thread+0xad7/0x12a0
[ 342.345512][ T146] kthread+0x42e/0x520
[ 342.349641][ T146] ? rcu_lock_release+0x20/0x20
[ 342.354594][ T146] ? kthread_blkcg+0xd0/0xd0
[ 342.359295][ T146] ret_from_fork+0x1f/0x30
[ 342.363856][ T146]
[ 342.370787][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 342.384652][ T146] Bluetooth: hci1: failed to register connection device
[ 342.412034][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 342.421642][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 342.429288][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 342.439724][ T146] Workqueue: hci1 hci_rx_work
[ 342.444732][ T146] Call Trace:
[ 342.448058][ T146]
[ 342.451102][ T146] dump_stack_lvl+0x188/0x250
[ 342.455891][ T146] ? show_regs_print_info+0x20/0x20
[ 342.461600][ T146] ? load_image+0x410/0x410
[ 342.467226][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 342.472565][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 342.477379][ T146] ? kthread+0x42e/0x520
[ 342.481652][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 342.486934][ T146] kobject_add_internal+0x5ba/0xcd0
[ 342.492200][ T146] kobject_add+0x160/0x230
[ 342.496736][ T146] ? kobject_init+0x1c0/0x1c0
[ 342.501441][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 342.506855][ T146] ? klist_children_get+0x50/0x50
[ 342.511905][ T146] ? get_device_parent+0x121/0x3e0
[ 342.517257][ T146] device_add+0x470/0x1050
[ 342.521702][ T146] ? device_initialize+0x2a5/0x4d0
[ 342.526857][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 342.532407][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 342.537904][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 342.543327][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 342.548931][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 342.553806][ T146] ? hci_event_packet+0x363/0x1310
[ 342.558944][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 342.564026][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 342.570130][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 342.575804][ T146] ? mark_lock+0x94/0x320
[ 342.580588][ T146] ? mutex_unlock+0x10/0x10
[ 342.585270][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 342.591309][ T146] ? lock_chain_count+0x20/0x20
[ 342.596219][ T146] ? __rwlock_init+0x140/0x140
[ 342.601033][ T146] hci_event_packet+0xe0b/0x1310
[ 342.605993][ T146] ? _raw_spin_unlock+0x40/0x40
[ 342.610958][ T146] ? rcu_lock_release+0x20/0x20
[ 342.615836][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 342.621062][ T146] hci_rx_work+0x255/0xa10
[ 342.625624][ T146] process_one_work+0x867/0xff0
[ 342.630529][ T146] ? worker_detach_from_pool+0x240/0x240
[ 342.636210][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 342.641695][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 342.646755][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 342.652434][ T146] ? wq_worker_running+0x97/0x170
[ 342.657495][ T146] worker_thread+0xad7/0x12a0
[ 342.662207][ T146] kthread+0x42e/0x520
[ 342.666293][ T146] ? rcu_lock_release+0x20/0x20
[ 342.671249][ T146] ? kthread_blkcg+0xd0/0xd0
[ 342.675866][ T146] ret_from_fork+0x1f/0x30
[ 342.680319][ T146]
[ 342.683899][ T4273] Bluetooth: hci1: command 0x0406 tx timeout
[ 342.692227][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 342.706095][ T146] Bluetooth: hci1: failed to register connection device
[ 342.738948][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 342.748918][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 342.756427][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 342.766494][ T146] Workqueue: hci1 hci_rx_work
[ 342.771211][ T146] Call Trace:
[ 342.774523][ T146]
[ 342.777632][ T146] dump_stack_lvl+0x188/0x250
[ 342.782375][ T146] ? show_regs_print_info+0x20/0x20
[ 342.787624][ T146] ? load_image+0x410/0x410
[ 342.792166][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 342.797331][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 342.802019][ T146] ? kthread+0x42e/0x520
[ 342.806310][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 342.811643][ T146] kobject_add_internal+0x5ba/0xcd0
[ 342.817078][ T146] kobject_add+0x160/0x230
[ 342.821560][ T146] ? kobject_init+0x1c0/0x1c0
[ 342.826389][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 342.831727][ T146] ? klist_children_get+0x50/0x50
[ 342.836800][ T146] ? get_device_parent+0x121/0x3e0
[ 342.841951][ T146] device_add+0x470/0x1050
[ 342.846415][ T146] ? device_initialize+0x2a5/0x4d0
[ 342.851650][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 342.856852][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 342.862306][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 342.867477][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 342.873063][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 342.877958][ T146] ? hci_event_packet+0x363/0x1310
[ 342.883083][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 342.888130][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 342.894218][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 342.899886][ T146] ? mark_lock+0x94/0x320
[ 342.904234][ T146] ? mutex_unlock+0x10/0x10
[ 342.908782][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 342.914787][ T146] ? lock_chain_count+0x20/0x20
[ 342.919686][ T146] ? __rwlock_init+0x140/0x140
[ 342.924730][ T146] hci_event_packet+0xe0b/0x1310
[ 342.929800][ T146] ? _raw_spin_unlock+0x40/0x40
[ 342.934682][ T146] ? rcu_lock_release+0x20/0x20
[ 342.939662][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 342.944883][ T146] hci_rx_work+0x255/0xa10
[ 342.949347][ T146] process_one_work+0x867/0xff0
[ 342.954237][ T146] ? worker_detach_from_pool+0x240/0x240
[ 342.960108][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 342.965435][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 342.970497][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 342.976064][ T146] ? wq_worker_running+0x97/0x170
[ 342.981107][ T146] worker_thread+0xad7/0x12a0
[ 342.986181][ T146] kthread+0x42e/0x520
[ 342.990262][ T146] ? rcu_lock_release+0x20/0x20
[ 342.995242][ T146] ? kthread_blkcg+0xd0/0xd0
[ 343.000046][ T146] ret_from_fork+0x1f/0x30
[ 343.004592][ T146]
[ 343.008985][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 343.022508][ T146] Bluetooth: hci1: failed to register connection device
[ 343.045276][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 343.055178][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 343.062956][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 343.073284][ T4292] Workqueue: hci1 hci_rx_work
[ 343.078011][ T4292] Call Trace:
[ 343.081591][ T4292]
[ 343.084662][ T4292] dump_stack_lvl+0x188/0x250
[ 343.089621][ T4292] ? show_regs_print_info+0x20/0x20
[ 343.095107][ T4292] ? load_image+0x410/0x410
[ 343.099848][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 343.105136][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 343.110120][ T4292] ? kthread+0x42e/0x520
[ 343.114389][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 343.119636][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 343.124951][ T4292] kobject_add+0x160/0x230
[ 343.129490][ T4292] ? kobject_init+0x1c0/0x1c0
[ 343.134201][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 343.139535][ T4292] ? klist_children_get+0x50/0x50
[ 343.144718][ T4292] ? get_device_parent+0x121/0x3e0
[ 343.149905][ T4292] device_add+0x470/0x1050
[ 343.154357][ T4292] ? device_initialize+0x2a5/0x4d0
[ 343.159623][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 343.164588][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 343.169906][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 343.175440][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 343.181114][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 343.185984][ T4292] ? hci_event_packet+0x363/0x1310
[ 343.191117][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 343.196287][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 343.202498][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 343.208352][ T4292] ? mark_lock+0x94/0x320
[ 343.212815][ T4292] ? mutex_unlock+0x10/0x10
[ 343.217540][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 343.223563][ T4292] ? lock_chain_count+0x20/0x20
[ 343.228529][ T4292] ? __rwlock_init+0x140/0x140
[ 343.233360][ T4292] hci_event_packet+0xe0b/0x1310
[ 343.238349][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 343.243331][ T4292] ? rcu_lock_release+0x20/0x20
[ 343.248202][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 343.253431][ T4292] hci_rx_work+0x255/0xa10
[ 343.257901][ T4292] process_one_work+0x867/0xff0
[ 343.262993][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 343.269404][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 343.274763][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 343.279830][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 343.285512][ T4292] ? wq_worker_running+0x97/0x170
[ 343.290772][ T4292] worker_thread+0xad7/0x12a0
[ 343.295520][ T4292] kthread+0x42e/0x520
[ 343.299654][ T4292] ? rcu_lock_release+0x20/0x20
[ 343.304562][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 343.309271][ T4292] ret_from_fork+0x1f/0x30
[ 343.313740][ T4292]
[ 343.318312][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 343.332240][ T4292] Bluetooth: hci1: failed to register connection device
[ 343.356211][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 343.366767][ T4292] CPU: 1 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 343.374488][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 343.384653][ T4292] Workqueue: hci1 hci_rx_work
[ 343.389386][ T4292] Call Trace:
[ 343.392767][ T4292]
[ 343.395712][ T4292] dump_stack_lvl+0x188/0x250
[ 343.400412][ T4292] ? show_regs_print_info+0x20/0x20
[ 343.406231][ T4292] ? load_image+0x410/0x410
[ 343.410903][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 343.416099][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 343.420843][ T4292] ? kthread+0x42e/0x520
[ 343.425328][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 343.430946][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 343.436304][ T4292] kobject_add+0x160/0x230
[ 343.441052][ T4292] ? kobject_init+0x1c0/0x1c0
[ 343.445775][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 343.451095][ T4292] ? klist_children_get+0x50/0x50
[ 343.456479][ T4292] ? get_device_parent+0x121/0x3e0
[ 343.461642][ T4292] device_add+0x470/0x1050
[ 343.466444][ T4292] ? device_initialize+0x2a5/0x4d0
[ 343.471584][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 343.476756][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 343.482241][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 343.488031][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 343.493892][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 343.499070][ T4292] ? hci_event_packet+0x363/0x1310
[ 343.504363][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 343.509514][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 343.515743][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 343.521662][ T4292] ? mark_lock+0x94/0x320
[ 343.526392][ T4292] ? mutex_unlock+0x10/0x10
[ 343.531029][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 343.537070][ T4292] ? lock_chain_count+0x20/0x20
[ 343.541952][ T4292] ? __rwlock_init+0x140/0x140
[ 343.546841][ T4292] hci_event_packet+0xe0b/0x1310
[ 343.551998][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 343.556863][ T4292] ? rcu_lock_release+0x20/0x20
[ 343.561779][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 343.567140][ T4292] hci_rx_work+0x255/0xa10
[ 343.571624][ T4292] process_one_work+0x867/0xff0
[ 343.576520][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 343.582160][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 343.587494][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 343.592657][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 343.598263][ T4292] ? wq_worker_running+0x97/0x170
[ 343.603442][ T4292] worker_thread+0xad7/0x12a0
[ 343.608302][ T4292] kthread+0x42e/0x520
[ 343.612506][ T4292] ? rcu_lock_release+0x20/0x20
[ 343.617367][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 343.622114][ T4292] ret_from_fork+0x1f/0x30
[ 343.626592][ T4292]
[ 343.631818][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 343.645612][ T4292] Bluetooth: hci1: failed to register connection device
[ 343.668413][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 343.678356][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 343.685949][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 343.696051][ T4292] Workqueue: hci1 hci_rx_work
[ 343.701062][ T4292] Call Trace:
[ 343.704418][ T4292]
[ 343.707403][ T4292] dump_stack_lvl+0x188/0x250
[ 343.712325][ T4292] ? show_regs_print_info+0x20/0x20
[ 343.717583][ T4292] ? load_image+0x410/0x410
[ 343.722189][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 343.727488][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 343.732201][ T4292] ? kthread+0x42e/0x520
[ 343.736686][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 343.742040][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 343.747302][ T4292] kobject_add+0x160/0x230
[ 343.751860][ T4292] ? kobject_init+0x1c0/0x1c0
[ 343.756632][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 343.762333][ T4292] ? klist_children_get+0x50/0x50
[ 343.767502][ T4292] ? get_device_parent+0x121/0x3e0
[ 343.772650][ T4292] device_add+0x470/0x1050
[ 343.777142][ T4292] ? device_initialize+0x2a5/0x4d0
[ 343.782661][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 343.787925][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 343.793506][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 343.798652][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 343.804259][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 343.809516][ T4292] ? hci_event_packet+0x363/0x1310
[ 343.814664][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 343.819963][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 343.826180][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 343.831895][ T4292] ? mark_lock+0x94/0x320
[ 343.836277][ T4292] ? mutex_unlock+0x10/0x10
[ 343.840844][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 343.846862][ T4292] ? lock_chain_count+0x20/0x20
[ 343.851762][ T4292] ? __rwlock_init+0x140/0x140
[ 343.857136][ T4292] hci_event_packet+0xe0b/0x1310
[ 343.862349][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 343.867250][ T4292] ? rcu_lock_release+0x20/0x20
[ 343.872370][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 343.877696][ T4292] hci_rx_work+0x255/0xa10
[ 343.882226][ T4292] process_one_work+0x867/0xff0
[ 343.887245][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 343.892914][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 343.898575][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 343.903778][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 343.909379][ T4292] ? wq_worker_running+0x97/0x170
[ 343.914544][ T4292] worker_thread+0xad7/0x12a0
[ 343.919304][ T4292] kthread+0x42e/0x520
[ 343.923444][ T4292] ? rcu_lock_release+0x20/0x20
[ 343.928348][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 343.933142][ T4292] ret_from_fork+0x1f/0x30
[ 343.937625][ T4292]
[ 343.942142][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 343.956187][ T4292] Bluetooth: hci1: failed to register connection device
[ 343.982280][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 343.992744][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 344.000258][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 344.010374][ T146] Workqueue: hci1 hci_rx_work
[ 344.015246][ T146] Call Trace:
[ 344.018531][ T146]
[ 344.021472][ T146] dump_stack_lvl+0x188/0x250
[ 344.026285][ T146] ? show_regs_print_info+0x20/0x20
[ 344.031591][ T146] ? load_image+0x410/0x410
[ 344.036287][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 344.041441][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 344.046157][ T146] ? kthread+0x42e/0x520
[ 344.050691][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 344.056250][ T146] kobject_add_internal+0x5ba/0xcd0
[ 344.061958][ T146] kobject_add+0x160/0x230
[ 344.066915][ T146] ? kobject_init+0x1c0/0x1c0
[ 344.071651][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 344.077567][ T146] ? klist_children_get+0x50/0x50
[ 344.082878][ T146] ? get_device_parent+0x121/0x3e0
[ 344.088281][ T146] device_add+0x470/0x1050
[ 344.092833][ T146] ? device_initialize+0x2a5/0x4d0
[ 344.097984][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 344.103124][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 344.108588][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 344.113762][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 344.119350][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 344.124497][ T146] ? hci_event_packet+0x363/0x1310
[ 344.129636][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 344.134695][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 344.140828][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 344.146959][ T146] ? mark_lock+0x94/0x320
[ 344.151330][ T146] ? mutex_unlock+0x10/0x10
[ 344.155954][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 344.162205][ T146] ? lock_chain_count+0x20/0x20
[ 344.167079][ T146] ? __rwlock_init+0x140/0x140
[ 344.171984][ T146] hci_event_packet+0xe0b/0x1310
[ 344.176943][ T146] ? _raw_spin_unlock+0x40/0x40
[ 344.181826][ T146] ? rcu_lock_release+0x20/0x20
[ 344.186889][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 344.192393][ T146] hci_rx_work+0x255/0xa10
[ 344.197039][ T146] process_one_work+0x867/0xff0
[ 344.202052][ T146] ? worker_detach_from_pool+0x240/0x240
[ 344.208168][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 344.213489][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 344.218578][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 344.224353][ T146] ? wq_worker_running+0x97/0x170
[ 344.229422][ T146] worker_thread+0xad7/0x12a0
[ 344.234292][ T146] kthread+0x42e/0x520
[ 344.238422][ T146] ? rcu_lock_release+0x20/0x20
[ 344.243470][ T146] ? kthread_blkcg+0xd0/0xd0
[ 344.248183][ T146] ret_from_fork+0x1f/0x30
[ 344.252639][ T146]
[ 344.259210][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 344.273526][ T146] Bluetooth: hci1: failed to register connection device
[ 344.299368][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 344.309253][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 344.316870][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 344.327240][ T146] Workqueue: hci1 hci_rx_work
[ 344.332398][ T146] Call Trace:
[ 344.335794][ T146]
[ 344.338743][ T146] dump_stack_lvl+0x188/0x250
[ 344.343447][ T146] ? show_regs_print_info+0x20/0x20
[ 344.348923][ T146] ? load_image+0x410/0x410
[ 344.353477][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 344.359071][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 344.364274][ T146] ? kthread+0x42e/0x520
[ 344.368572][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 344.373826][ T146] kobject_add_internal+0x5ba/0xcd0
[ 344.379079][ T146] kobject_add+0x160/0x230
[ 344.383557][ T146] ? kobject_init+0x1c0/0x1c0
[ 344.388344][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 344.393936][ T146] ? klist_children_get+0x50/0x50
[ 344.399173][ T146] ? get_device_parent+0x121/0x3e0
[ 344.404975][ T146] device_add+0x470/0x1050
[ 344.409767][ T146] ? device_initialize+0x2a5/0x4d0
[ 344.415032][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 344.420036][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 344.425498][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 344.430661][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 344.436252][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 344.441167][ T146] ? hci_event_packet+0x363/0x1310
[ 344.446310][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 344.451372][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 344.457494][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 344.463344][ T146] ? mark_lock+0x94/0x320
[ 344.468031][ T146] ? mutex_unlock+0x10/0x10
[ 344.472563][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 344.478592][ T146] ? lock_chain_count+0x20/0x20
[ 344.483672][ T146] ? __rwlock_init+0x140/0x140
[ 344.488487][ T146] hci_event_packet+0xe0b/0x1310
[ 344.493483][ T146] ? _raw_spin_unlock+0x40/0x40
[ 344.498375][ T146] ? rcu_lock_release+0x20/0x20
[ 344.503431][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 344.508662][ T146] hci_rx_work+0x255/0xa10
[ 344.513127][ T146] process_one_work+0x867/0xff0
[ 344.518040][ T146] ? worker_detach_from_pool+0x240/0x240
[ 344.523702][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 344.529124][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 344.534165][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 344.539748][ T146] ? wq_worker_running+0x97/0x170
[ 344.544888][ T146] worker_thread+0xad7/0x12a0
[ 344.549692][ T146] kthread+0x42e/0x520
[ 344.553949][ T146] ? rcu_lock_release+0x20/0x20
[ 344.558895][ T146] ? kthread_blkcg+0xd0/0xd0
[ 344.563630][ T146] ret_from_fork+0x1f/0x30
[ 344.568291][ T146]
[ 344.572648][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 344.586254][ T146] Bluetooth: hci1: failed to register connection device
[ 344.612087][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 344.622069][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 344.629585][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 344.639997][ T146] Workqueue: hci1 hci_rx_work
[ 344.644994][ T146] Call Trace:
[ 344.648287][ T146]
[ 344.651474][ T146] dump_stack_lvl+0x188/0x250
[ 344.656198][ T146] ? show_regs_print_info+0x20/0x20
[ 344.661454][ T146] ? load_image+0x410/0x410
[ 344.666126][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 344.671423][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 344.676258][ T146] ? kthread+0x42e/0x520
[ 344.680572][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 344.685798][ T146] kobject_add_internal+0x5ba/0xcd0
[ 344.691034][ T146] kobject_add+0x160/0x230
[ 344.695584][ T146] ? kobject_init+0x1c0/0x1c0
[ 344.700415][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 344.706163][ T146] ? klist_children_get+0x50/0x50
[ 344.711211][ T146] ? get_device_parent+0x121/0x3e0
[ 344.716419][ T146] device_add+0x470/0x1050
[ 344.720908][ T146] ? device_initialize+0x2a5/0x4d0
[ 344.726162][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 344.731147][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 344.736477][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 344.741722][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 344.747495][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 344.752371][ T146] ? hci_event_packet+0x363/0x1310
[ 344.757591][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 344.762651][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 344.769268][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 344.775029][ T146] ? mark_lock+0x94/0x320
[ 344.779381][ T146] ? mutex_unlock+0x10/0x10
[ 344.784050][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 344.790264][ T146] ? lock_chain_count+0x20/0x20
[ 344.795426][ T146] ? __rwlock_init+0x140/0x140
[ 344.800323][ T146] hci_event_packet+0xe0b/0x1310
[ 344.805478][ T146] ? _raw_spin_unlock+0x40/0x40
[ 344.810354][ T146] ? rcu_lock_release+0x20/0x20
[ 344.815234][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 344.820481][ T146] hci_rx_work+0x255/0xa10
[ 344.825029][ T146] process_one_work+0x867/0xff0
[ 344.829924][ T146] ? worker_detach_from_pool+0x240/0x240
[ 344.835616][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 344.840948][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 344.846404][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 344.852176][ T146] ? wq_worker_running+0x97/0x170
[ 344.857217][ T146] worker_thread+0xad7/0x12a0
[ 344.862085][ T146] kthread+0x42e/0x520
[ 344.866174][ T146] ? rcu_lock_release+0x20/0x20
[ 344.871121][ T146] ? kthread_blkcg+0xd0/0xd0
[ 344.875728][ T146] ret_from_fork+0x1f/0x30
[ 344.880460][ T146]
[ 344.885370][ T5053] Bluetooth: hci1: command 0x0406 tx timeout
[ 344.892258][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 344.905943][ T146] Bluetooth: hci1: failed to register connection device
[ 344.930614][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 344.940294][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 344.948021][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 344.958318][ T146] Workqueue: hci1 hci_rx_work
[ 344.963170][ T146] Call Trace:
[ 344.966536][ T146]
[ 344.969762][ T146] dump_stack_lvl+0x188/0x250
[ 344.974940][ T146] ? show_regs_print_info+0x20/0x20
[ 344.980307][ T146] ? load_image+0x410/0x410
[ 344.984888][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 344.990024][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 344.994719][ T146] ? kthread+0x42e/0x520
[ 344.999078][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 345.004404][ T146] kobject_add_internal+0x5ba/0xcd0
[ 345.009734][ T146] kobject_add+0x160/0x230
[ 345.014175][ T146] ? kobject_init+0x1c0/0x1c0
[ 345.019042][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 345.024375][ T146] ? klist_children_get+0x50/0x50
[ 345.029463][ T146] ? get_device_parent+0x121/0x3e0
[ 345.034911][ T146] device_add+0x470/0x1050
[ 345.039623][ T146] ? device_initialize+0x2a5/0x4d0
[ 345.044807][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 345.049827][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 345.055154][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 345.060317][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 345.065907][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 345.070787][ T146] ? hci_event_packet+0x363/0x1310
[ 345.075923][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 345.081087][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 345.087498][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 345.093155][ T146] ? mark_lock+0x94/0x320
[ 345.097590][ T146] ? mutex_unlock+0x10/0x10
[ 345.102467][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 345.108583][ T146] ? lock_chain_count+0x20/0x20
[ 345.113548][ T146] ? __rwlock_init+0x140/0x140
[ 345.118328][ T146] hci_event_packet+0xe0b/0x1310
[ 345.123326][ T146] ? _raw_spin_unlock+0x40/0x40
[ 345.128351][ T146] ? rcu_lock_release+0x20/0x20
[ 345.133448][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 345.138770][ T146] hci_rx_work+0x255/0xa10
[ 345.143233][ T146] process_one_work+0x867/0xff0
[ 345.148243][ T146] ? worker_detach_from_pool+0x240/0x240
[ 345.153889][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 345.159198][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 345.164293][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 345.169966][ T146] ? wq_worker_running+0x97/0x170
[ 345.175117][ T146] worker_thread+0xad7/0x12a0
[ 345.179832][ T146] kthread+0x42e/0x520
[ 345.183924][ T146] ? rcu_lock_release+0x20/0x20
[ 345.188897][ T146] ? kthread_blkcg+0xd0/0xd0
[ 345.193507][ T146] ret_from_fork+0x1f/0x30
[ 345.197947][ T146]
[ 345.203411][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 345.216747][ T146] Bluetooth: hci1: failed to register connection device
[ 345.240477][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 345.251130][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 345.258758][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 345.269329][ T146] Workqueue: hci1 hci_rx_work
[ 345.274226][ T146] Call Trace:
[ 345.277554][ T146]
[ 345.280534][ T146] dump_stack_lvl+0x188/0x250
[ 345.285236][ T146] ? show_regs_print_info+0x20/0x20
[ 345.290556][ T146] ? load_image+0x410/0x410
[ 345.295126][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 345.300635][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 345.305470][ T146] ? kthread+0x42e/0x520
[ 345.309955][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 345.315189][ T146] kobject_add_internal+0x5ba/0xcd0
[ 345.320436][ T146] kobject_add+0x160/0x230
[ 345.324917][ T146] ? kobject_init+0x1c0/0x1c0
[ 345.329639][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 345.335223][ T146] ? klist_children_get+0x50/0x50
[ 345.340306][ T146] ? get_device_parent+0x121/0x3e0
[ 345.345719][ T146] device_add+0x470/0x1050
[ 345.350265][ T146] ? device_initialize+0x2a5/0x4d0
[ 345.355540][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 345.360622][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 345.365945][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 345.371195][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 345.376919][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 345.381799][ T146] ? hci_event_packet+0x363/0x1310
[ 345.386972][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 345.392046][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 345.398475][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 345.404849][ T146] ? mark_lock+0x94/0x320
[ 345.409199][ T146] ? mutex_unlock+0x10/0x10
[ 345.413994][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 345.420023][ T146] ? lock_chain_count+0x20/0x20
[ 345.425034][ T146] ? __rwlock_init+0x140/0x140
[ 345.430564][ T146] hci_event_packet+0xe0b/0x1310
[ 345.436148][ T146] ? _raw_spin_unlock+0x40/0x40
[ 345.441190][ T146] ? rcu_lock_release+0x20/0x20
[ 345.446401][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 345.451998][ T146] hci_rx_work+0x255/0xa10
[ 345.456468][ T146] process_one_work+0x867/0xff0
[ 345.461569][ T146] ? worker_detach_from_pool+0x240/0x240
[ 345.467483][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 345.472855][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 345.478048][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 345.484022][ T146] ? wq_worker_running+0x97/0x170
2026/06/15 05:44:00 executed programs: 649
[ 345.489077][ T146] worker_thread+0xad7/0x12a0
[ 345.493824][ T146] kthread+0x42e/0x520
[ 345.497983][ T146] ? rcu_lock_release+0x20/0x20
[ 345.503074][ T146] ? kthread_blkcg+0xd0/0xd0
[ 345.507697][ T146] ret_from_fork+0x1f/0x30
[ 345.512723][ T146]
[ 345.521060][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 345.535600][ T146] Bluetooth: hci1: failed to register connection device
[ 345.558209][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 345.567891][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 345.575652][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 345.586019][ T146] Workqueue: hci1 hci_rx_work
[ 345.590749][ T146] Call Trace:
[ 345.594109][ T146]
[ 345.597057][ T146] dump_stack_lvl+0x188/0x250
[ 345.601925][ T146] ? show_regs_print_info+0x20/0x20
[ 345.608101][ T146] ? load_image+0x410/0x410
[ 345.612665][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 345.617914][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 345.622626][ T146] ? kthread+0x42e/0x520
[ 345.626972][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 345.632409][ T146] kobject_add_internal+0x5ba/0xcd0
[ 345.637774][ T146] kobject_add+0x160/0x230
[ 345.642323][ T146] ? kobject_init+0x1c0/0x1c0
[ 345.647247][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 345.652566][ T146] ? klist_children_get+0x50/0x50
[ 345.657899][ T146] ? get_device_parent+0x121/0x3e0
[ 345.663058][ T146] device_add+0x470/0x1050
[ 345.667512][ T146] ? device_initialize+0x2a5/0x4d0
[ 345.672739][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 345.677885][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 345.683290][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 345.688431][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 345.694008][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 345.699104][ T146] ? hci_event_packet+0x363/0x1310
[ 345.704237][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 345.709289][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 345.715519][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 345.721302][ T146] ? mark_lock+0x94/0x320
[ 345.725745][ T146] ? mutex_unlock+0x10/0x10
[ 345.730307][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 345.736332][ T146] ? lock_chain_count+0x20/0x20
[ 345.741487][ T146] ? __rwlock_init+0x140/0x140
[ 345.746421][ T146] hci_event_packet+0xe0b/0x1310
[ 345.751505][ T146] ? _raw_spin_unlock+0x40/0x40
[ 345.756555][ T146] ? rcu_lock_release+0x20/0x20
[ 345.761464][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 345.766729][ T146] hci_rx_work+0x255/0xa10
[ 345.771726][ T146] process_one_work+0x867/0xff0
[ 345.777079][ T146] ? worker_detach_from_pool+0x240/0x240
[ 345.782837][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 345.788534][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 345.793970][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 345.799550][ T146] ? wq_worker_running+0x97/0x170
[ 345.804746][ T146] worker_thread+0xad7/0x12a0
[ 345.809831][ T146] kthread+0x42e/0x520
[ 345.814216][ T146] ? rcu_lock_release+0x20/0x20
[ 345.819288][ T146] ? kthread_blkcg+0xd0/0xd0
[ 345.823891][ T146] ret_from_fork+0x1f/0x30
[ 345.828335][ T146]
[ 345.834461][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 345.848155][ T146] Bluetooth: hci1: failed to register connection device
[ 345.872868][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 345.882459][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 345.890176][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 345.900305][ T4292] Workqueue: hci1 hci_rx_work
[ 345.905036][ T4292] Call Trace:
[ 345.908511][ T4292]
[ 345.911465][ T4292] dump_stack_lvl+0x188/0x250
[ 345.916197][ T4292] ? show_regs_print_info+0x20/0x20
[ 345.921444][ T4292] ? load_image+0x410/0x410
[ 345.926134][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 345.931385][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 345.936347][ T4292] ? kthread+0x42e/0x520
[ 345.940614][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 345.945943][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 345.951189][ T4292] kobject_add+0x160/0x230
[ 345.955771][ T4292] ? kobject_init+0x1c0/0x1c0
[ 345.960520][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 345.965932][ T4292] ? klist_children_get+0x50/0x50
[ 345.971006][ T4292] ? get_device_parent+0x121/0x3e0
[ 345.976150][ T4292] device_add+0x470/0x1050
[ 345.980625][ T4292] ? device_initialize+0x2a5/0x4d0
[ 345.985952][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 345.991045][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 345.996483][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 346.001658][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 346.007284][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 346.012233][ T4292] ? hci_event_packet+0x363/0x1310
[ 346.017581][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 346.022660][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 346.028777][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 346.034447][ T4292] ? mark_lock+0x94/0x320
[ 346.039176][ T4292] ? mutex_unlock+0x10/0x10
[ 346.043892][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 346.049992][ T4292] ? lock_chain_count+0x20/0x20
[ 346.055073][ T4292] ? __rwlock_init+0x140/0x140
[ 346.059986][ T4292] hci_event_packet+0xe0b/0x1310
[ 346.065012][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 346.069981][ T4292] ? rcu_lock_release+0x20/0x20
[ 346.074962][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 346.080299][ T4292] hci_rx_work+0x255/0xa10
[ 346.084774][ T4292] process_one_work+0x867/0xff0
[ 346.089659][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 346.095490][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 346.100866][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 346.106030][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 346.111621][ T4292] ? wq_worker_running+0x97/0x170
[ 346.116794][ T4292] worker_thread+0xad7/0x12a0
[ 346.121535][ T4292] kthread+0x42e/0x520
[ 346.125659][ T4292] ? rcu_lock_release+0x20/0x20
[ 346.130531][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 346.135320][ T4292] ret_from_fork+0x1f/0x30
[ 346.139795][ T4292]
[ 346.143507][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 346.157662][ T4292] Bluetooth: hci1: failed to register connection device
[ 346.181220][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 346.191269][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 346.199329][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 346.209857][ T4292] Workqueue: hci1 hci_rx_work
[ 346.214569][ T4292] Call Trace:
[ 346.217880][ T4292]
[ 346.220852][ T4292] dump_stack_lvl+0x188/0x250
[ 346.225552][ T4292] ? show_regs_print_info+0x20/0x20
[ 346.230787][ T4292] ? load_image+0x410/0x410
[ 346.235348][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 346.240610][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 346.245679][ T4292] ? kthread+0x42e/0x520
[ 346.250218][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 346.255561][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 346.260936][ T4292] kobject_add+0x160/0x230
[ 346.265482][ T4292] ? kobject_init+0x1c0/0x1c0
[ 346.270297][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 346.275607][ T4292] ? klist_children_get+0x50/0x50
[ 346.280775][ T4292] ? get_device_parent+0x121/0x3e0
[ 346.286044][ T4292] device_add+0x470/0x1050
[ 346.290497][ T4292] ? device_initialize+0x2a5/0x4d0
[ 346.295737][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 346.300705][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 346.306031][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 346.311191][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 346.316803][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 346.321781][ T4292] ? hci_event_packet+0x363/0x1310
[ 346.326926][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 346.331985][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 346.338096][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 346.343928][ T4292] ? mark_lock+0x94/0x320
[ 346.348538][ T4292] ? mutex_unlock+0x10/0x10
[ 346.353148][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 346.359271][ T4292] ? lock_chain_count+0x20/0x20
[ 346.364149][ T4292] ? __rwlock_init+0x140/0x140
[ 346.368968][ T4292] hci_event_packet+0xe0b/0x1310
[ 346.374066][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 346.379002][ T4292] ? rcu_lock_release+0x20/0x20
[ 346.383975][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 346.389291][ T4292] hci_rx_work+0x255/0xa10
[ 346.393742][ T4292] process_one_work+0x867/0xff0
[ 346.398643][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 346.404293][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 346.409639][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 346.414932][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 346.420640][ T4292] ? wq_worker_running+0x97/0x170
[ 346.425692][ T4292] worker_thread+0xad7/0x12a0
[ 346.430586][ T4292] kthread+0x42e/0x520
[ 346.434713][ T4292] ? rcu_lock_release+0x20/0x20
[ 346.439598][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 346.444213][ T4292] ret_from_fork+0x1f/0x30
[ 346.448727][ T4292]
[ 346.452201][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 346.466224][ T4292] Bluetooth: hci1: failed to register connection device
[ 346.488916][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 346.498773][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 346.506556][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 346.516745][ T4292] Workqueue: hci1 hci_rx_work
[ 346.521493][ T4292] Call Trace:
[ 346.524815][ T4292]
[ 346.527787][ T4292] dump_stack_lvl+0x188/0x250
[ 346.532613][ T4292] ? show_regs_print_info+0x20/0x20
[ 346.537887][ T4292] ? load_image+0x410/0x410
[ 346.542457][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 346.547591][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 346.552281][ T4292] ? kthread+0x42e/0x520
[ 346.556561][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 346.561919][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 346.567198][ T4292] kobject_add+0x160/0x230
[ 346.571725][ T4292] ? kobject_init+0x1c0/0x1c0
[ 346.576537][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 346.581922][ T4292] ? klist_children_get+0x50/0x50
[ 346.587406][ T4292] ? get_device_parent+0x121/0x3e0
[ 346.592534][ T4292] device_add+0x470/0x1050
[ 346.596985][ T4292] ? device_initialize+0x2a5/0x4d0
[ 346.602228][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 346.607180][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 346.612491][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 346.617692][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 346.623342][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 346.628197][ T4292] ? hci_event_packet+0x363/0x1310
[ 346.633459][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 346.638722][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 346.645258][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 346.650918][ T4292] ? mark_lock+0x94/0x320
[ 346.655346][ T4292] ? mutex_unlock+0x10/0x10
[ 346.659862][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 346.666048][ T4292] ? lock_chain_count+0x20/0x20
[ 346.671004][ T4292] ? __rwlock_init+0x140/0x140
[ 346.675785][ T4292] hci_event_packet+0xe0b/0x1310
[ 346.680750][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 346.685784][ T4292] ? rcu_lock_release+0x20/0x20
[ 346.690652][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 346.696060][ T4292] hci_rx_work+0x255/0xa10
[ 346.700509][ T4292] process_one_work+0x867/0xff0
[ 346.705673][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 346.711516][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 346.716844][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 346.721889][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 346.727553][ T4292] ? wq_worker_running+0x97/0x170
[ 346.732598][ T4292] worker_thread+0xad7/0x12a0
[ 346.737360][ T4292] kthread+0x42e/0x520
[ 346.741530][ T4292] ? rcu_lock_release+0x20/0x20
[ 346.746411][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 346.751042][ T4292] ret_from_fork+0x1f/0x30
[ 346.755499][ T4292]
[ 346.760029][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 346.774049][ T4292] Bluetooth: hci1: failed to register connection device
[ 346.802333][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 346.812875][ T4292] CPU: 1 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 346.820458][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 346.830536][ T4292] Workqueue: hci1 hci_rx_work
[ 346.835345][ T4292] Call Trace:
[ 346.838756][ T4292]
[ 346.841791][ T4292] dump_stack_lvl+0x188/0x250
[ 346.846548][ T4292] ? show_regs_print_info+0x20/0x20
[ 346.851799][ T4292] ? load_image+0x410/0x410
[ 346.856334][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 346.861488][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 346.866289][ T4292] ? kthread+0x42e/0x520
[ 346.870580][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 346.875809][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 346.881033][ T4292] kobject_add+0x160/0x230
[ 346.885470][ T4292] ? kobject_init+0x1c0/0x1c0
[ 346.890308][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 346.895611][ T4292] ? klist_children_get+0x50/0x50
[ 346.900689][ T4292] ? get_device_parent+0x121/0x3e0
[ 346.905960][ T4292] device_add+0x470/0x1050
[ 346.910498][ T4292] ? device_initialize+0x2a5/0x4d0
[ 346.915671][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 346.920634][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 346.925939][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 346.931248][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 346.936818][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 346.941700][ T4292] ? hci_event_packet+0x363/0x1310
[ 346.946831][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 346.952062][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 346.958294][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 346.964142][ T4292] ? mark_lock+0x94/0x320
[ 346.968581][ T4292] ? mutex_unlock+0x10/0x10
[ 346.972176][ T4273] Bluetooth: hci1: command 0x0406 tx timeout
[ 346.973553][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 346.985671][ T4292] ? lock_chain_count+0x20/0x20
[ 346.990583][ T4292] ? __rwlock_init+0x140/0x140
[ 346.995401][ T4292] hci_event_packet+0xe0b/0x1310
[ 347.000464][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 347.005330][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.010199][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 347.015528][ T4292] hci_rx_work+0x255/0xa10
[ 347.019978][ T4292] process_one_work+0x867/0xff0
[ 347.024872][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 347.030546][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 347.035888][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 347.040933][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 347.046717][ T4292] ? wq_worker_running+0x97/0x170
[ 347.051836][ T4292] worker_thread+0xad7/0x12a0
[ 347.056680][ T4292] kthread+0x42e/0x520
[ 347.060787][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.065673][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 347.070296][ T4292] ret_from_fork+0x1f/0x30
[ 347.075133][ T4292]
[ 347.080214][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 347.094923][ T4292] Bluetooth: hci1: failed to register connection device
[ 347.118847][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 347.128511][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 347.136371][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 347.146836][ T4292] Workqueue: hci1 hci_rx_work
[ 347.151644][ T4292] Call Trace:
[ 347.154964][ T4292]
[ 347.157948][ T4292] dump_stack_lvl+0x188/0x250
[ 347.162983][ T4292] ? show_regs_print_info+0x20/0x20
[ 347.168380][ T4292] ? load_image+0x410/0x410
[ 347.172934][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 347.178114][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 347.182977][ T4292] ? kthread+0x42e/0x520
[ 347.187360][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 347.192605][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 347.197983][ T4292] kobject_add+0x160/0x230
[ 347.202576][ T4292] ? kobject_init+0x1c0/0x1c0
[ 347.207398][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 347.212764][ T4292] ? klist_children_get+0x50/0x50
[ 347.217897][ T4292] ? get_device_parent+0x121/0x3e0
[ 347.223074][ T4292] device_add+0x470/0x1050
[ 347.227541][ T4292] ? device_initialize+0x2a5/0x4d0
[ 347.232918][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 347.237926][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 347.243354][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 347.250066][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 347.255667][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 347.260583][ T4292] ? hci_event_packet+0x363/0x1310
[ 347.265844][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 347.270904][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 347.277140][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 347.282993][ T4292] ? mark_lock+0x94/0x320
[ 347.287357][ T4292] ? mutex_unlock+0x10/0x10
[ 347.291912][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 347.297976][ T4292] ? lock_chain_count+0x20/0x20
[ 347.302984][ T4292] ? __rwlock_init+0x140/0x140
[ 347.307860][ T4292] hci_event_packet+0xe0b/0x1310
[ 347.312831][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 347.317804][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.322715][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 347.327994][ T4292] hci_rx_work+0x255/0xa10
[ 347.332466][ T4292] process_one_work+0x867/0xff0
[ 347.337388][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 347.343054][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 347.348367][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 347.353726][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 347.359437][ T4292] ? wq_worker_running+0x97/0x170
[ 347.364542][ T4292] worker_thread+0xad7/0x12a0
[ 347.369288][ T4292] kthread+0x42e/0x520
[ 347.373386][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.378318][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 347.382964][ T4292] ret_from_fork+0x1f/0x30
[ 347.387626][ T4292]
[ 347.391739][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 347.408369][ T4292] Bluetooth: hci1: failed to register connection device
[ 347.434189][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 347.444218][ T4292] CPU: 1 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 347.452001][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 347.462106][ T4292] Workqueue: hci1 hci_rx_work
[ 347.466869][ T4292] Call Trace:
[ 347.470200][ T4292]
[ 347.473151][ T4292] dump_stack_lvl+0x188/0x250
[ 347.477867][ T4292] ? show_regs_print_info+0x20/0x20
[ 347.483083][ T4292] ? load_image+0x410/0x410
[ 347.487624][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 347.492962][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 347.497716][ T4292] ? kthread+0x42e/0x520
[ 347.502022][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 347.507398][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 347.512836][ T4292] kobject_add+0x160/0x230
[ 347.517346][ T4292] ? kobject_init+0x1c0/0x1c0
[ 347.522084][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 347.527481][ T4292] ? klist_children_get+0x50/0x50
[ 347.532545][ T4292] ? get_device_parent+0x121/0x3e0
[ 347.537676][ T4292] device_add+0x470/0x1050
[ 347.542107][ T4292] ? device_initialize+0x2a5/0x4d0
[ 347.547249][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 347.552306][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 347.557669][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 347.562974][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 347.568649][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 347.573581][ T4292] ? hci_event_packet+0x363/0x1310
[ 347.578915][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 347.583987][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 347.590327][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 347.595982][ T4292] ? mark_lock+0x94/0x320
[ 347.600325][ T4292] ? mutex_unlock+0x10/0x10
[ 347.604855][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 347.610887][ T4292] ? lock_chain_count+0x20/0x20
[ 347.615777][ T4292] ? __rwlock_init+0x140/0x140
[ 347.620556][ T4292] hci_event_packet+0xe0b/0x1310
[ 347.625510][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 347.630379][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.635451][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 347.640675][ T4292] hci_rx_work+0x255/0xa10
[ 347.645330][ T4292] process_one_work+0x867/0xff0
[ 347.650348][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 347.656004][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 347.661426][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 347.666486][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 347.672251][ T4292] ? wq_worker_running+0x97/0x170
[ 347.677474][ T4292] worker_thread+0xad7/0x12a0
[ 347.682402][ T4292] kthread+0x42e/0x520
[ 347.686487][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.691456][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 347.696255][ T4292] ret_from_fork+0x1f/0x30
[ 347.700805][ T4292]
[ 347.704348][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 347.717969][ T4292] Bluetooth: hci1: failed to register connection device
[ 347.740956][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 347.750634][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 347.758302][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 347.768403][ T4292] Workqueue: hci1 hci_rx_work
[ 347.773230][ T4292] Call Trace:
[ 347.776640][ T4292]
[ 347.779602][ T4292] dump_stack_lvl+0x188/0x250
[ 347.784594][ T4292] ? show_regs_print_info+0x20/0x20
[ 347.789906][ T4292] ? load_image+0x410/0x410
[ 347.794629][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 347.800082][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 347.804791][ T4292] ? kthread+0x42e/0x520
[ 347.809153][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 347.814478][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 347.819811][ T4292] kobject_add+0x160/0x230
[ 347.824259][ T4292] ? kobject_init+0x1c0/0x1c0
[ 347.828979][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 347.834296][ T4292] ? klist_children_get+0x50/0x50
[ 347.839375][ T4292] ? get_device_parent+0x121/0x3e0
[ 347.844568][ T4292] device_add+0x470/0x1050
[ 347.849048][ T4292] ? device_initialize+0x2a5/0x4d0
[ 347.854274][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 347.859248][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 347.864652][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 347.869786][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 347.875376][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 347.880268][ T4292] ? hci_event_packet+0x363/0x1310
[ 347.885390][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 347.890485][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 347.896599][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 347.902270][ T4292] ? mark_lock+0x94/0x320
[ 347.906628][ T4292] ? mutex_unlock+0x10/0x10
[ 347.911149][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 347.917183][ T4292] ? lock_chain_count+0x20/0x20
[ 347.922054][ T4292] ? __rwlock_init+0x140/0x140
[ 347.926840][ T4292] hci_event_packet+0xe0b/0x1310
[ 347.931988][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 347.936892][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.941787][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 347.947127][ T4292] hci_rx_work+0x255/0xa10
[ 347.951600][ T4292] process_one_work+0x867/0xff0
[ 347.956515][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 347.962181][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 347.967522][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 347.972625][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 347.978226][ T4292] ? wq_worker_running+0x97/0x170
[ 347.983274][ T4292] worker_thread+0xad7/0x12a0
[ 347.987998][ T4292] kthread+0x42e/0x520
[ 347.992123][ T4292] ? rcu_lock_release+0x20/0x20
[ 347.997011][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 348.001734][ T4292] ret_from_fork+0x1f/0x30
[ 348.006197][ T4292]
[ 348.015094][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 348.028550][ T4292] Bluetooth: hci1: failed to register connection device
[ 348.052736][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 348.062361][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 348.069943][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 348.080037][ T4292] Workqueue: hci1 hci_rx_work
[ 348.084838][ T4292] Call Trace:
[ 348.088176][ T4292]
[ 348.091243][ T4292] dump_stack_lvl+0x188/0x250
[ 348.095956][ T4292] ? show_regs_print_info+0x20/0x20
[ 348.101190][ T4292] ? load_image+0x410/0x410
[ 348.105711][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 348.110840][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 348.115528][ T4292] ? kthread+0x42e/0x520
[ 348.119817][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 348.125165][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 348.130418][ T4292] kobject_add+0x160/0x230
[ 348.134874][ T4292] ? kobject_init+0x1c0/0x1c0
[ 348.139679][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 348.144985][ T4292] ? klist_children_get+0x50/0x50
[ 348.150080][ T4292] ? get_device_parent+0x121/0x3e0
[ 348.155239][ T4292] device_add+0x470/0x1050
[ 348.159726][ T4292] ? device_initialize+0x2a5/0x4d0
[ 348.164969][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 348.170040][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 348.175357][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 348.180599][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 348.186342][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 348.191210][ T4292] ? hci_event_packet+0x363/0x1310
[ 348.196338][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 348.201391][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 348.207682][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 348.213518][ T4292] ? mark_lock+0x94/0x320
[ 348.217888][ T4292] ? mutex_unlock+0x10/0x10
[ 348.222524][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 348.228652][ T4292] ? lock_chain_count+0x20/0x20
[ 348.233530][ T4292] ? __rwlock_init+0x140/0x140
[ 348.238355][ T4292] hci_event_packet+0xe0b/0x1310
[ 348.243339][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 348.248474][ T4292] ? rcu_lock_release+0x20/0x20
[ 348.253451][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 348.258695][ T4292] hci_rx_work+0x255/0xa10
[ 348.263291][ T4292] process_one_work+0x867/0xff0
[ 348.268259][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 348.273996][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 348.279329][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 348.284377][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 348.290031][ T4292] ? wq_worker_running+0x97/0x170
[ 348.295416][ T4292] worker_thread+0xad7/0x12a0
[ 348.300182][ T4292] kthread+0x42e/0x520
[ 348.304306][ T4292] ? rcu_lock_release+0x20/0x20
[ 348.309175][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 348.313802][ T4292] ret_from_fork+0x1f/0x30
[ 348.318371][ T4292]
[ 348.322127][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 348.335623][ T4292] Bluetooth: hci1: failed to register connection device
[ 348.359770][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 348.369464][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 348.377167][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 348.387322][ T146] Workqueue: hci1 hci_rx_work
[ 348.392240][ T146] Call Trace:
[ 348.395655][ T146]
[ 348.398613][ T146] dump_stack_lvl+0x188/0x250
[ 348.403315][ T146] ? show_regs_print_info+0x20/0x20
[ 348.408551][ T146] ? load_image+0x410/0x410
[ 348.413168][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 348.418402][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 348.423271][ T146] ? kthread+0x42e/0x520
[ 348.427672][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 348.433080][ T146] kobject_add_internal+0x5ba/0xcd0
[ 348.438303][ T146] kobject_add+0x160/0x230
[ 348.442737][ T146] ? kobject_init+0x1c0/0x1c0
[ 348.447426][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 348.453013][ T146] ? klist_children_get+0x50/0x50
[ 348.458165][ T146] ? get_device_parent+0x121/0x3e0
[ 348.463298][ T146] device_add+0x470/0x1050
[ 348.467820][ T146] ? device_initialize+0x2a5/0x4d0
[ 348.472962][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 348.477922][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 348.483281][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 348.488412][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 348.494131][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 348.498996][ T146] ? hci_event_packet+0x363/0x1310
[ 348.504125][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 348.509209][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 348.515522][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 348.521184][ T146] ? mark_lock+0x94/0x320
[ 348.525527][ T146] ? mutex_unlock+0x10/0x10
[ 348.530050][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 348.536160][ T146] ? lock_chain_count+0x20/0x20
[ 348.541126][ T146] ? __rwlock_init+0x140/0x140
[ 348.545937][ T146] hci_event_packet+0xe0b/0x1310
[ 348.550974][ T146] ? _raw_spin_unlock+0x40/0x40
[ 348.555837][ T146] ? rcu_lock_release+0x20/0x20
[ 348.560708][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 348.566052][ T146] hci_rx_work+0x255/0xa10
[ 348.570497][ T146] process_one_work+0x867/0xff0
[ 348.575444][ T146] ? worker_detach_from_pool+0x240/0x240
[ 348.581092][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 348.586398][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 348.591446][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 348.597555][ T146] ? wq_worker_running+0x97/0x170
[ 348.602600][ T146] worker_thread+0xad7/0x12a0
[ 348.607336][ T146] kthread+0x42e/0x520
[ 348.611459][ T146] ? rcu_lock_release+0x20/0x20
[ 348.616343][ T146] ? kthread_blkcg+0xd0/0xd0
[ 348.620949][ T146] ret_from_fork+0x1f/0x30
[ 348.625425][ T146]
[ 348.631372][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 348.645312][ T146] Bluetooth: hci1: failed to register connection device
[ 348.667616][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 348.677539][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 348.685041][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 348.695129][ T146] Workqueue: hci1 hci_rx_work
[ 348.699876][ T146] Call Trace:
[ 348.703245][ T146]
[ 348.706353][ T146] dump_stack_lvl+0x188/0x250
[ 348.711132][ T146] ? show_regs_print_info+0x20/0x20
[ 348.716427][ T146] ? load_image+0x410/0x410
[ 348.721152][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 348.726462][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 348.731420][ T146] ? kthread+0x42e/0x520
[ 348.735710][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 348.740974][ T146] kobject_add_internal+0x5ba/0xcd0
[ 348.746207][ T146] kobject_add+0x160/0x230
[ 348.750654][ T146] ? kobject_init+0x1c0/0x1c0
[ 348.755437][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 348.760746][ T146] ? klist_children_get+0x50/0x50
[ 348.765800][ T146] ? get_device_parent+0x121/0x3e0
[ 348.770953][ T146] device_add+0x470/0x1050
[ 348.775423][ T146] ? device_initialize+0x2a5/0x4d0
[ 348.780550][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 348.785506][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 348.790836][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 348.795997][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 348.801567][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 348.806449][ T146] ? hci_event_packet+0x363/0x1310
[ 348.811594][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 348.816733][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 348.822810][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 348.828458][ T146] ? mark_lock+0x94/0x320
[ 348.832903][ T146] ? mutex_unlock+0x10/0x10
[ 348.837449][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 348.843587][ T146] ? lock_chain_count+0x20/0x20
[ 348.848494][ T146] ? __rwlock_init+0x140/0x140
[ 348.853308][ T146] hci_event_packet+0xe0b/0x1310
[ 348.858262][ T146] ? _raw_spin_unlock+0x40/0x40
[ 348.863209][ T146] ? rcu_lock_release+0x20/0x20
[ 348.868073][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 348.873474][ T146] hci_rx_work+0x255/0xa10
[ 348.877916][ T146] process_one_work+0x867/0xff0
[ 348.882828][ T146] ? worker_detach_from_pool+0x240/0x240
[ 348.888569][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 348.893879][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 348.899095][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 348.904655][ T146] ? wq_worker_running+0x97/0x170
[ 348.909696][ T146] worker_thread+0xad7/0x12a0
[ 348.914726][ T146] kthread+0x42e/0x520
[ 348.918967][ T146] ? rcu_lock_release+0x20/0x20
[ 348.923831][ T146] ? kthread_blkcg+0xd0/0xd0
[ 348.928435][ T146] ret_from_fork+0x1f/0x30
[ 348.932989][ T146]
[ 348.938728][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 348.952257][ T146] Bluetooth: hci1: failed to register connection device
[ 348.975971][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 348.985687][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 348.993491][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 349.003580][ T146] Workqueue: hci1 hci_rx_work
[ 349.008276][ T146] Call Trace:
[ 349.011564][ T146]
[ 349.014502][ T146] dump_stack_lvl+0x188/0x250
[ 349.019187][ T146] ? show_regs_print_info+0x20/0x20
[ 349.024492][ T146] ? load_image+0x410/0x410
[ 349.029323][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 349.034495][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 349.039324][ T146] ? kthread+0x42e/0x520
[ 349.043604][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 349.048949][ T146] kobject_add_internal+0x5ba/0xcd0
[ 349.054370][ T146] kobject_add+0x160/0x230
[ 349.058902][ T146] ? kobject_init+0x1c0/0x1c0
[ 349.063671][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 349.068996][ T146] ? klist_children_get+0x50/0x50
[ 349.074389][ T146] ? get_device_parent+0x121/0x3e0
[ 349.080008][ T146] device_add+0x470/0x1050
[ 349.084472][ T146] ? device_initialize+0x2a5/0x4d0
[ 349.089612][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 349.094588][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 349.099957][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 349.105125][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 349.110718][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 349.115651][ T146] ? hci_event_packet+0x363/0x1310
[ 349.120809][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 349.125874][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 349.132182][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 349.137833][ T146] ? mark_lock+0x94/0x320
[ 349.142203][ T146] ? mutex_unlock+0x10/0x10
[ 349.146746][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 349.152752][ T146] ? lock_chain_count+0x20/0x20
[ 349.157617][ T146] ? __rwlock_init+0x140/0x140
[ 349.162404][ T146] hci_event_packet+0xe0b/0x1310
[ 349.167474][ T146] ? _raw_spin_unlock+0x40/0x40
[ 349.172342][ T146] ? rcu_lock_release+0x20/0x20
[ 349.177220][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 349.182914][ T146] hci_rx_work+0x255/0xa10
[ 349.187364][ T146] process_one_work+0x867/0xff0
[ 349.192394][ T146] ? worker_detach_from_pool+0x240/0x240
[ 349.194741][ T4273] Bluetooth: hci1: command 0x0406 tx timeout
[ 349.198064][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 349.198098][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 349.214493][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 349.220087][ T146] ? wq_worker_running+0x97/0x170
[ 349.225253][ T146] worker_thread+0xad7/0x12a0
[ 349.230126][ T146] kthread+0x42e/0x520
[ 349.234237][ T146] ? rcu_lock_release+0x20/0x20
[ 349.239187][ T146] ? kthread_blkcg+0xd0/0xd0
[ 349.243805][ T146] ret_from_fork+0x1f/0x30
[ 349.248489][ T146]
[ 349.252568][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 349.267475][ T146] Bluetooth: hci1: failed to register connection device
[ 349.293282][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 349.303005][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 349.310916][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 349.321691][ T146] Workqueue: hci1 hci_rx_work
[ 349.326404][ T146] Call Trace:
[ 349.329886][ T146]
[ 349.332944][ T146] dump_stack_lvl+0x188/0x250
[ 349.337638][ T146] ? show_regs_print_info+0x20/0x20
[ 349.343281][ T146] ? load_image+0x410/0x410
[ 349.347853][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 349.352994][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 349.357704][ T146] ? kthread+0x42e/0x520
[ 349.361977][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 349.367466][ T146] kobject_add_internal+0x5ba/0xcd0
[ 349.372813][ T146] kobject_add+0x160/0x230
[ 349.377476][ T146] ? kobject_init+0x1c0/0x1c0
[ 349.382182][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 349.387480][ T146] ? klist_children_get+0x50/0x50
[ 349.392615][ T146] ? get_device_parent+0x121/0x3e0
[ 349.397792][ T146] device_add+0x470/0x1050
[ 349.402293][ T146] ? device_initialize+0x2a5/0x4d0
[ 349.407433][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 349.412402][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 349.417838][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 349.423151][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 349.428714][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 349.433577][ T146] ? hci_event_packet+0x363/0x1310
[ 349.438701][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 349.443960][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 349.450056][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 349.455713][ T146] ? mark_lock+0x94/0x320
[ 349.460068][ T146] ? mutex_unlock+0x10/0x10
[ 349.464588][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 349.470615][ T146] ? lock_chain_count+0x20/0x20
[ 349.475609][ T146] ? __rwlock_init+0x140/0x140
[ 349.480391][ T146] hci_event_packet+0xe0b/0x1310
[ 349.485496][ T146] ? _raw_spin_unlock+0x40/0x40
[ 349.490680][ T146] ? rcu_lock_release+0x20/0x20
[ 349.495664][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 349.501031][ T146] hci_rx_work+0x255/0xa10
[ 349.505589][ T146] process_one_work+0x867/0xff0
[ 349.510475][ T146] ? worker_detach_from_pool+0x240/0x240
[ 349.516131][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 349.521456][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 349.526650][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 349.532217][ T146] ? wq_worker_running+0x97/0x170
[ 349.537375][ T146] worker_thread+0xad7/0x12a0
[ 349.542090][ T146] kthread+0x42e/0x520
[ 349.546173][ T146] ? rcu_lock_release+0x20/0x20
[ 349.551308][ T146] ? kthread_blkcg+0xd0/0xd0
[ 349.555937][ T146] ret_from_fork+0x1f/0x30
[ 349.560541][ T146]
[ 349.564290][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 349.578129][ T146] Bluetooth: hci1: failed to register connection device
[ 349.600532][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 349.610276][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 349.617973][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 349.628238][ T146] Workqueue: hci1 hci_rx_work
[ 349.633041][ T146] Call Trace:
[ 349.636382][ T146]
[ 349.639438][ T146] dump_stack_lvl+0x188/0x250
[ 349.644178][ T146] ? show_regs_print_info+0x20/0x20
[ 349.649586][ T146] ? load_image+0x410/0x410
[ 349.654124][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 349.659278][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 349.664145][ T146] ? kthread+0x42e/0x520
[ 349.668448][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 349.673698][ T146] kobject_add_internal+0x5ba/0xcd0
[ 349.679111][ T146] kobject_add+0x160/0x230
[ 349.683719][ T146] ? kobject_init+0x1c0/0x1c0
[ 349.688560][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 349.693871][ T146] ? klist_children_get+0x50/0x50
[ 349.698946][ T146] ? get_device_parent+0x121/0x3e0
[ 349.704078][ T146] device_add+0x470/0x1050
[ 349.708714][ T146] ? device_initialize+0x2a5/0x4d0
[ 349.713926][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 349.719017][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 349.724356][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 349.729519][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 349.735220][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 349.740208][ T146] ? hci_event_packet+0x363/0x1310
[ 349.745585][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 349.750646][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 349.756892][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 349.762682][ T146] ? mark_lock+0x94/0x320
[ 349.767029][ T146] ? mutex_unlock+0x10/0x10
[ 349.771735][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 349.777848][ T146] ? lock_chain_count+0x20/0x20
[ 349.782762][ T146] ? __rwlock_init+0x140/0x140
[ 349.787605][ T146] hci_event_packet+0xe0b/0x1310
[ 349.792583][ T146] ? _raw_spin_unlock+0x40/0x40
[ 349.797492][ T146] ? rcu_lock_release+0x20/0x20
[ 349.802586][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 349.808042][ T146] hci_rx_work+0x255/0xa10
[ 349.812620][ T146] process_one_work+0x867/0xff0
[ 349.817651][ T146] ? worker_detach_from_pool+0x240/0x240
[ 349.823344][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 349.828688][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 349.833884][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 349.839484][ T146] ? wq_worker_running+0x97/0x170
[ 349.844536][ T146] worker_thread+0xad7/0x12a0
[ 349.849343][ T146] kthread+0x42e/0x520
[ 349.853449][ T146] ? rcu_lock_release+0x20/0x20
[ 349.858628][ T146] ? kthread_blkcg+0xd0/0xd0
[ 349.863434][ T146] ret_from_fork+0x1f/0x30
[ 349.867991][ T146]
[ 349.872793][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 349.886341][ T146] Bluetooth: hci1: failed to register connection device
[ 349.911671][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 349.921321][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 349.928923][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 349.939227][ T146] Workqueue: hci1 hci_rx_work
[ 349.943985][ T146] Call Trace:
[ 349.947340][ T146]
[ 349.950312][ T146] dump_stack_lvl+0x188/0x250
[ 349.955018][ T146] ? show_regs_print_info+0x20/0x20
[ 349.960233][ T146] ? load_image+0x410/0x410
[ 349.964847][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 349.970066][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 349.974757][ T146] ? kthread+0x42e/0x520
[ 349.979137][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 349.984365][ T146] kobject_add_internal+0x5ba/0xcd0
[ 349.990197][ T146] kobject_add+0x160/0x230
[ 349.994761][ T146] ? kobject_init+0x1c0/0x1c0
[ 349.999495][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 350.004955][ T146] ? klist_children_get+0x50/0x50
[ 350.010223][ T146] ? get_device_parent+0x121/0x3e0
[ 350.015372][ T146] device_add+0x470/0x1050
[ 350.019851][ T146] ? device_initialize+0x2a5/0x4d0
[ 350.025141][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 350.030194][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 350.035767][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 350.041022][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 350.046664][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 350.051758][ T146] ? hci_event_packet+0x363/0x1310
[ 350.056981][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 350.062206][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 350.068336][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 350.074182][ T146] ? mark_lock+0x94/0x320
[ 350.078820][ T146] ? mutex_unlock+0x10/0x10
[ 350.083762][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 350.089780][ T146] ? lock_chain_count+0x20/0x20
[ 350.094671][ T146] ? __rwlock_init+0x140/0x140
[ 350.099572][ T146] hci_event_packet+0xe0b/0x1310
[ 350.104543][ T146] ? _raw_spin_unlock+0x40/0x40
[ 350.109586][ T146] ? rcu_lock_release+0x20/0x20
[ 350.114557][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 350.119787][ T146] hci_rx_work+0x255/0xa10
[ 350.124257][ T146] process_one_work+0x867/0xff0
[ 350.129327][ T146] ? worker_detach_from_pool+0x240/0x240
[ 350.135085][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 350.140425][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 350.145526][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 350.151101][ T146] ? wq_worker_running+0x97/0x170
[ 350.156248][ T146] worker_thread+0xad7/0x12a0
[ 350.161159][ T146] kthread+0x42e/0x520
[ 350.165259][ T146] ? rcu_lock_release+0x20/0x20
[ 350.170125][ T146] ? kthread_blkcg+0xd0/0xd0
[ 350.175297][ T146] ret_from_fork+0x1f/0x30
[ 350.179789][ T146]
[ 350.186512][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 350.200022][ T146] Bluetooth: hci1: failed to register connection device
[ 350.232622][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 350.242356][ T4292] CPU: 1 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 350.250121][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 350.260227][ T4292] Workqueue: hci1 hci_rx_work
[ 350.264953][ T4292] Call Trace:
[ 350.268235][ T4292]
[ 350.271172][ T4292] dump_stack_lvl+0x188/0x250
[ 350.275964][ T4292] ? show_regs_print_info+0x20/0x20
[ 350.281173][ T4292] ? load_image+0x410/0x410
[ 350.285888][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 350.291020][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 350.295824][ T4292] ? kthread+0x42e/0x520
[ 350.300140][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 350.305383][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 350.310630][ T4292] kobject_add+0x160/0x230
[ 350.315071][ T4292] ? kobject_init+0x1c0/0x1c0
[ 350.319785][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 350.325200][ T4292] ? klist_children_get+0x50/0x50
[ 350.330342][ T4292] ? get_device_parent+0x121/0x3e0
[ 350.335503][ T4292] device_add+0x470/0x1050
[ 350.339961][ T4292] ? device_initialize+0x2a5/0x4d0
[ 350.345549][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 350.350550][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 350.355893][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 350.361244][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 350.366839][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 350.372046][ T4292] ? hci_event_packet+0x363/0x1310
[ 350.377299][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 350.382461][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 350.388574][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 350.394372][ T4292] ? mark_lock+0x94/0x320
[ 350.398728][ T4292] ? mutex_unlock+0x10/0x10
[ 350.403264][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 350.410102][ T4292] ? lock_chain_count+0x20/0x20
[ 350.415077][ T4292] ? __rwlock_init+0x140/0x140
[ 350.419878][ T4292] hci_event_packet+0xe0b/0x1310
[ 350.424989][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 350.429868][ T4292] ? rcu_lock_release+0x20/0x20
[ 350.434853][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 350.440083][ T4292] hci_rx_work+0x255/0xa10
[ 350.445103][ T4292] process_one_work+0x867/0xff0
[ 350.450067][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 350.455820][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 350.461232][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 350.466669][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 350.472434][ T4292] ? wq_worker_running+0x97/0x170
[ 350.477773][ T4292] worker_thread+0xad7/0x12a0
[ 350.482539][ T4292] kthread+0x42e/0x520
[ 350.486774][ T4292] ? rcu_lock_release+0x20/0x20
[ 350.491680][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 350.496308][ T4292] ret_from_fork+0x1f/0x30
[ 350.500807][ T4292]
[ 350.505483][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 350.521904][ T4292] Bluetooth: hci1: failed to register connection device
[ 350.547024][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 350.557178][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 350.564885][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 350.575421][ T4292] Workqueue: hci1 hci_rx_work
[ 350.580349][ T4292] Call Trace:
[ 350.583649][ T4292]
[ 350.586615][ T4292] dump_stack_lvl+0x188/0x250
[ 350.591429][ T4292] ? show_regs_print_info+0x20/0x20
[ 350.596662][ T4292] ? load_image+0x410/0x410
[ 350.601211][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 350.606380][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 350.611202][ T4292] ? kthread+0x42e/0x520
[ 350.615463][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 350.620697][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 350.625924][ T4292] kobject_add+0x160/0x230
[ 350.630447][ T4292] ? kobject_init+0x1c0/0x1c0
[ 350.635150][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 350.640470][ T4292] ? klist_children_get+0x50/0x50
[ 350.645521][ T4292] ? get_device_parent+0x121/0x3e0
[ 350.650681][ T4292] device_add+0x470/0x1050
[ 350.655139][ T4292] ? device_initialize+0x2a5/0x4d0
[ 350.660306][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 350.665565][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 350.670904][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 350.676192][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 350.681788][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 350.686729][ T4292] ? hci_event_packet+0x363/0x1310
[ 350.691995][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 350.697202][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 350.703488][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 350.709177][ T4292] ? mark_lock+0x94/0x320
[ 350.713549][ T4292] ? mutex_unlock+0x10/0x10
[ 350.718077][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 350.724203][ T4292] ? lock_chain_count+0x20/0x20
[ 350.729107][ T4292] ? __rwlock_init+0x140/0x140
[ 350.734185][ T4292] hci_event_packet+0xe0b/0x1310
[ 350.739156][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 350.744045][ T4292] ? rcu_lock_release+0x20/0x20
[ 350.748970][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 350.754213][ T4292] hci_rx_work+0x255/0xa10
[ 350.758734][ T4292] process_one_work+0x867/0xff0
[ 350.763644][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 350.769334][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 350.775014][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 350.780074][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 350.785691][ T4292] ? wq_worker_running+0x97/0x170
[ 350.790850][ T4292] worker_thread+0xad7/0x12a0
2026/06/15 05:44:05 executed programs: 666
[ 350.795565][ T4292] kthread+0x42e/0x520
[ 350.799701][ T4292] ? rcu_lock_release+0x20/0x20
[ 350.804683][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 350.809422][ T4292] ret_from_fork+0x1f/0x30
[ 350.813888][ T4292]
[ 350.819487][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 350.833219][ T4292] Bluetooth: hci1: failed to register connection device
[ 350.856686][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 350.866841][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 350.874536][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 350.885858][ T4292] Workqueue: hci1 hci_rx_work
[ 350.890589][ T4292] Call Trace:
[ 350.893884][ T4292]
[ 350.896851][ T4292] dump_stack_lvl+0x188/0x250
[ 350.901771][ T4292] ? show_regs_print_info+0x20/0x20
[ 350.907046][ T4292] ? load_image+0x410/0x410
[ 350.911654][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 350.916952][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 350.921784][ T4292] ? kthread+0x42e/0x520
[ 350.926104][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 350.931427][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 350.936662][ T4292] kobject_add+0x160/0x230
[ 350.941125][ T4292] ? kobject_init+0x1c0/0x1c0
[ 350.945820][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 350.951122][ T4292] ? klist_children_get+0x50/0x50
[ 350.956161][ T4292] ? get_device_parent+0x121/0x3e0
[ 350.961324][ T4292] device_add+0x470/0x1050
[ 350.965774][ T4292] ? device_initialize+0x2a5/0x4d0
[ 350.971097][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 350.976195][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 350.981909][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 350.987349][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 350.993146][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 350.998168][ T4292] ? hci_event_packet+0x363/0x1310
[ 351.003613][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 351.008706][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 351.015160][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 351.021029][ T4292] ? mark_lock+0x94/0x320
[ 351.025485][ T4292] ? mutex_unlock+0x10/0x10
[ 351.030016][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 351.036114][ T4292] ? lock_chain_count+0x20/0x20
[ 351.041089][ T4292] ? __rwlock_init+0x140/0x140
[ 351.045885][ T4292] hci_event_packet+0xe0b/0x1310
[ 351.051076][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 351.055962][ T4292] ? rcu_lock_release+0x20/0x20
[ 351.061519][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 351.066798][ T4292] hci_rx_work+0x255/0xa10
[ 351.071510][ T4292] process_one_work+0x867/0xff0
[ 351.076433][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 351.082216][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 351.087544][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 351.092610][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 351.098517][ T4292] ? wq_worker_running+0x97/0x170
[ 351.103689][ T4292] worker_thread+0xad7/0x12a0
[ 351.108461][ T4292] kthread+0x42e/0x520
[ 351.112571][ T4292] ? rcu_lock_release+0x20/0x20
[ 351.117489][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 351.122141][ T4292] ret_from_fork+0x1f/0x30
[ 351.126795][ T4292]
[ 351.132595][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 351.146289][ T4292] Bluetooth: hci1: failed to register connection device
[ 351.172111][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 351.182065][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 351.189679][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 351.200101][ T4292] Workqueue: hci1 hci_rx_work
[ 351.204824][ T4292] Call Trace:
[ 351.208151][ T4292]
[ 351.211294][ T4292] dump_stack_lvl+0x188/0x250
[ 351.216078][ T4292] ? show_regs_print_info+0x20/0x20
[ 351.221292][ T4292] ? load_image+0x410/0x410
[ 351.225835][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 351.231001][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 351.235834][ T4292] ? kthread+0x42e/0x520
[ 351.240394][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 351.245630][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 351.251001][ T4292] kobject_add+0x160/0x230
[ 351.255577][ T4292] ? kobject_init+0x1c0/0x1c0
[ 351.260375][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 351.265974][ T4292] ? klist_children_get+0x50/0x50
[ 351.271161][ T4292] ? get_device_parent+0x121/0x3e0
[ 351.276427][ T4292] device_add+0x470/0x1050
[ 351.280901][ T4292] ? device_initialize+0x2a5/0x4d0
[ 351.286569][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 351.291681][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 351.297107][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 351.302350][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 351.307928][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 351.312904][ T4292] ? hci_event_packet+0x363/0x1310
[ 351.318070][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 351.323132][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 351.329505][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 351.335274][ T4292] ? mark_lock+0x94/0x320
[ 351.339659][ T4292] ? mutex_unlock+0x10/0x10
[ 351.341794][ T5053] Bluetooth: hci1: command 0x0406 tx timeout
[ 351.344325][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 351.344366][ T4292] ? lock_chain_count+0x20/0x20
[ 351.361723][ T4292] ? __rwlock_init+0x140/0x140
[ 351.366558][ T4292] hci_event_packet+0xe0b/0x1310
[ 351.371736][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 351.376845][ T4292] ? rcu_lock_release+0x20/0x20
[ 351.381873][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 351.387126][ T4292] hci_rx_work+0x255/0xa10
[ 351.391693][ T4292] process_one_work+0x867/0xff0
[ 351.396793][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 351.402462][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 351.407802][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 351.412844][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 351.418548][ T4292] ? wq_worker_running+0x97/0x170
[ 351.423692][ T4292] worker_thread+0xad7/0x12a0
[ 351.428597][ T4292] kthread+0x42e/0x520
[ 351.433071][ T4292] ? rcu_lock_release+0x20/0x20
[ 351.438044][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 351.442795][ T4292] ret_from_fork+0x1f/0x30
[ 351.447356][ T4292]
[ 351.451325][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 351.465095][ T4292] Bluetooth: hci1: failed to register connection device
[ 351.497672][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 351.507744][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 351.515350][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 351.525828][ T4292] Workqueue: hci1 hci_rx_work
[ 351.530568][ T4292] Call Trace:
[ 351.533858][ T4292]
[ 351.536911][ T4292] dump_stack_lvl+0x188/0x250
[ 351.541620][ T4292] ? show_regs_print_info+0x20/0x20
[ 351.547045][ T4292] ? load_image+0x410/0x410
[ 351.551601][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 351.556742][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 351.561532][ T4292] ? kthread+0x42e/0x520
[ 351.565945][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 351.571364][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 351.576740][ T4292] kobject_add+0x160/0x230
[ 351.581249][ T4292] ? kobject_init+0x1c0/0x1c0
[ 351.585985][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 351.591328][ T4292] ? klist_children_get+0x50/0x50
[ 351.596407][ T4292] ? get_device_parent+0x121/0x3e0
[ 351.601846][ T4292] device_add+0x470/0x1050
[ 351.606424][ T4292] ? device_initialize+0x2a5/0x4d0
[ 351.611598][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 351.616742][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 351.622411][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 351.627561][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 351.633301][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 351.638310][ T4292] ? hci_event_packet+0x363/0x1310
[ 351.643442][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 351.648792][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 351.655158][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 351.660936][ T4292] ? mark_lock+0x94/0x320
[ 351.665334][ T4292] ? mutex_unlock+0x10/0x10
[ 351.670105][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 351.676199][ T4292] ? lock_chain_count+0x20/0x20
[ 351.681068][ T4292] ? __rwlock_init+0x140/0x140
[ 351.685856][ T4292] hci_event_packet+0xe0b/0x1310
[ 351.690930][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 351.695802][ T4292] ? rcu_lock_release+0x20/0x20
[ 351.700675][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 351.705904][ T4292] hci_rx_work+0x255/0xa10
[ 351.710618][ T4292] process_one_work+0x867/0xff0
[ 351.715689][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 351.721454][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 351.726802][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 351.732011][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 351.737604][ T4292] ? wq_worker_running+0x97/0x170
[ 351.742680][ T4292] worker_thread+0xad7/0x12a0
[ 351.747393][ T4292] kthread+0x42e/0x520
[ 351.751486][ T4292] ? rcu_lock_release+0x20/0x20
[ 351.756515][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 351.761139][ T4292] ret_from_fork+0x1f/0x30
[ 351.765614][ T4292]
[ 351.769666][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 351.784186][ T4292] Bluetooth: hci1: failed to register connection device
[ 351.813579][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 351.823335][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 351.830921][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 351.841001][ T4292] Workqueue: hci1 hci_rx_work
[ 351.845708][ T4292] Call Trace:
[ 351.849010][ T4292]
[ 351.852127][ T4292] dump_stack_lvl+0x188/0x250
[ 351.857066][ T4292] ? show_regs_print_info+0x20/0x20
[ 351.862281][ T4292] ? load_image+0x410/0x410
[ 351.866808][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 351.871942][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 351.876668][ T4292] ? kthread+0x42e/0x520
[ 351.881050][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 351.886545][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 351.891779][ T4292] kobject_add+0x160/0x230
[ 351.896336][ T4292] ? kobject_init+0x1c0/0x1c0
[ 351.901028][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 351.906367][ T4292] ? klist_children_get+0x50/0x50
[ 351.911423][ T4292] ? get_device_parent+0x121/0x3e0
[ 351.916578][ T4292] device_add+0x470/0x1050
[ 351.921155][ T4292] ? device_initialize+0x2a5/0x4d0
[ 351.926599][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 351.931848][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 351.937185][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 351.942347][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 351.948117][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 351.953139][ T4292] ? hci_event_packet+0x363/0x1310
[ 351.958310][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 351.963585][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 351.969859][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 351.975622][ T4292] ? mark_lock+0x94/0x320
[ 351.979973][ T4292] ? mutex_unlock+0x10/0x10
[ 351.984520][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 351.990560][ T4292] ? lock_chain_count+0x20/0x20
[ 351.995476][ T4292] ? __rwlock_init+0x140/0x140
[ 352.000568][ T4292] hci_event_packet+0xe0b/0x1310
[ 352.005542][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 352.010508][ T4292] ? rcu_lock_release+0x20/0x20
[ 352.015542][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 352.021046][ T4292] hci_rx_work+0x255/0xa10
[ 352.025600][ T4292] process_one_work+0x867/0xff0
[ 352.030760][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 352.036421][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 352.042171][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 352.047539][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 352.053363][ T4292] ? wq_worker_running+0x97/0x170
[ 352.058545][ T4292] worker_thread+0xad7/0x12a0
[ 352.063421][ T4292] kthread+0x42e/0x520
[ 352.067830][ T4292] ? rcu_lock_release+0x20/0x20
[ 352.072714][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 352.077355][ T4292] ret_from_fork+0x1f/0x30
[ 352.082105][ T4292]
[ 352.087413][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 352.101811][ T4292] Bluetooth: hci1: failed to register connection device
[ 352.126261][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 352.136049][ T4292] CPU: 0 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 352.144060][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 352.154134][ T4292] Workqueue: hci1 hci_rx_work
[ 352.159107][ T4292] Call Trace:
[ 352.162502][ T4292]
[ 352.165571][ T4292] dump_stack_lvl+0x188/0x250
[ 352.170376][ T4292] ? show_regs_print_info+0x20/0x20
[ 352.175604][ T4292] ? load_image+0x410/0x410
[ 352.180233][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 352.185505][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 352.190224][ T4292] ? kthread+0x42e/0x520
[ 352.194494][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 352.199752][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 352.204977][ T4292] kobject_add+0x160/0x230
[ 352.209555][ T4292] ? kobject_init+0x1c0/0x1c0
[ 352.214337][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 352.219640][ T4292] ? klist_children_get+0x50/0x50
[ 352.224811][ T4292] ? get_device_parent+0x121/0x3e0
[ 352.230270][ T4292] device_add+0x470/0x1050
[ 352.234851][ T4292] ? device_initialize+0x2a5/0x4d0
[ 352.240004][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 352.245082][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 352.250660][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 352.256064][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 352.261660][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 352.266692][ T4292] ? hci_event_packet+0x363/0x1310
[ 352.272018][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 352.277220][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 352.283302][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 352.289167][ T4292] ? mark_lock+0x94/0x320
[ 352.293688][ T4292] ? mutex_unlock+0x10/0x10
[ 352.298232][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 352.304243][ T4292] ? lock_chain_count+0x20/0x20
[ 352.309233][ T4292] ? __rwlock_init+0x140/0x140
[ 352.314014][ T4292] hci_event_packet+0xe0b/0x1310
[ 352.319057][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 352.324057][ T4292] ? rcu_lock_release+0x20/0x20
[ 352.329019][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 352.334416][ T4292] hci_rx_work+0x255/0xa10
[ 352.339168][ T4292] process_one_work+0x867/0xff0
[ 352.344063][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 352.349877][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 352.355198][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 352.360257][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 352.365843][ T4292] ? wq_worker_running+0x97/0x170
[ 352.370902][ T4292] worker_thread+0xad7/0x12a0
[ 352.375635][ T4292] kthread+0x42e/0x520
[ 352.379735][ T4292] ? rcu_lock_release+0x20/0x20
[ 352.384607][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 352.389233][ T4292] ret_from_fork+0x1f/0x30
[ 352.393830][ T4292]
[ 352.399437][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 352.413833][ T4292] Bluetooth: hci1: failed to register connection device
[ 352.441692][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 352.451327][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 352.458849][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 352.468929][ T146] Workqueue: hci1 hci_rx_work
[ 352.473825][ T146] Call Trace:
[ 352.477133][ T146]
[ 352.480119][ T146] dump_stack_lvl+0x188/0x250
[ 352.484825][ T146] ? show_regs_print_info+0x20/0x20
[ 352.490364][ T146] ? load_image+0x410/0x410
[ 352.495023][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 352.500343][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 352.505170][ T146] ? kthread+0x42e/0x520
[ 352.509475][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 352.514883][ T146] kobject_add_internal+0x5ba/0xcd0
[ 352.520312][ T146] kobject_add+0x160/0x230
[ 352.525132][ T146] ? kobject_init+0x1c0/0x1c0
[ 352.530189][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 352.535504][ T146] ? klist_children_get+0x50/0x50
[ 352.540585][ T146] ? get_device_parent+0x121/0x3e0
[ 352.545765][ T146] device_add+0x470/0x1050
[ 352.550233][ T146] ? device_initialize+0x2a5/0x4d0
[ 352.555381][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 352.560396][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 352.565723][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 352.570890][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 352.576541][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 352.581640][ T146] ? hci_event_packet+0x363/0x1310
[ 352.586980][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 352.592274][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 352.598405][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 352.604067][ T146] ? mark_lock+0x94/0x320
[ 352.608448][ T146] ? mutex_unlock+0x10/0x10
[ 352.612977][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 352.619211][ T146] ? lock_chain_count+0x20/0x20
[ 352.624125][ T146] ? __rwlock_init+0x140/0x140
[ 352.629134][ T146] hci_event_packet+0xe0b/0x1310
[ 352.634197][ T146] ? _raw_spin_unlock+0x40/0x40
[ 352.639098][ T146] ? rcu_lock_release+0x20/0x20
[ 352.643989][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 352.649250][ T146] hci_rx_work+0x255/0xa10
[ 352.653708][ T146] process_one_work+0x867/0xff0
[ 352.658625][ T146] ? worker_detach_from_pool+0x240/0x240
[ 352.664274][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 352.669578][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 352.674707][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 352.680286][ T146] ? wq_worker_running+0x97/0x170
[ 352.685336][ T146] worker_thread+0xad7/0x12a0
[ 352.690076][ T146] kthread+0x42e/0x520
[ 352.694155][ T146] ? rcu_lock_release+0x20/0x20
[ 352.699129][ T146] ? kthread_blkcg+0xd0/0xd0
[ 352.703931][ T146] ret_from_fork+0x1f/0x30
[ 352.708445][ T146]
[ 352.713380][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 352.727228][ T146] Bluetooth: hci1: failed to register connection device
[ 352.756795][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 352.766597][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 352.774234][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 352.784449][ T146] Workqueue: hci1 hci_rx_work
[ 352.789295][ T146] Call Trace:
[ 352.792608][ T146]
[ 352.795569][ T146] dump_stack_lvl+0x188/0x250
[ 352.800274][ T146] ? show_regs_print_info+0x20/0x20
[ 352.806146][ T146] ? load_image+0x410/0x410
[ 352.810791][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 352.816142][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 352.820934][ T146] ? kthread+0x42e/0x520
[ 352.825307][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 352.830697][ T146] kobject_add_internal+0x5ba/0xcd0
[ 352.835983][ T146] kobject_add+0x160/0x230
[ 352.840584][ T146] ? kobject_init+0x1c0/0x1c0
[ 352.845473][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 352.851020][ T146] ? klist_children_get+0x50/0x50
[ 352.856078][ T146] ? get_device_parent+0x121/0x3e0
[ 352.861330][ T146] device_add+0x470/0x1050
[ 352.865956][ T146] ? device_initialize+0x2a5/0x4d0
[ 352.871190][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 352.876279][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 352.881687][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 352.886828][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 352.892643][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 352.897572][ T146] ? hci_event_packet+0x363/0x1310
[ 352.902702][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 352.907797][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 352.914139][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 352.920388][ T146] ? mark_lock+0x94/0x320
[ 352.924847][ T146] ? mutex_unlock+0x10/0x10
[ 352.929583][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 352.935583][ T146] ? lock_chain_count+0x20/0x20
[ 352.940575][ T146] ? __rwlock_init+0x140/0x140
[ 352.945357][ T146] hci_event_packet+0xe0b/0x1310
[ 352.950316][ T146] ? _raw_spin_unlock+0x40/0x40
[ 352.955194][ T146] ? rcu_lock_release+0x20/0x20
[ 352.960275][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 352.965502][ T146] hci_rx_work+0x255/0xa10
[ 352.969968][ T146] process_one_work+0x867/0xff0
[ 352.974884][ T146] ? worker_detach_from_pool+0x240/0x240
[ 352.980860][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 352.986202][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 352.991333][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 352.996908][ T146] ? wq_worker_running+0x97/0x170
[ 353.002152][ T146] worker_thread+0xad7/0x12a0
[ 353.007014][ T146] kthread+0x42e/0x520
[ 353.011374][ T146] ? rcu_lock_release+0x20/0x20
[ 353.016276][ T146] ? kthread_blkcg+0xd0/0xd0
[ 353.020907][ T146] ret_from_fork+0x1f/0x30
[ 353.025592][ T146]
[ 353.030802][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 353.044412][ T146] Bluetooth: hci1: failed to register connection device
[ 353.068780][ T4292] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 353.078807][ T4292] CPU: 1 PID: 4292 Comm: kworker/u5:1 Not tainted syzkaller #0
[ 353.086589][ T4292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 353.096961][ T4292] Workqueue: hci1 hci_rx_work
[ 353.101663][ T4292] Call Trace:
[ 353.104950][ T4292]
[ 353.107883][ T4292] dump_stack_lvl+0x188/0x250
[ 353.112689][ T4292] ? show_regs_print_info+0x20/0x20
[ 353.118330][ T4292] ? load_image+0x410/0x410
[ 353.122918][ T4292] sysfs_create_dir_ns+0x26a/0x290
[ 353.128067][ T4292] ? sysfs_warn_dup+0xa0/0xa0
[ 353.132919][ T4292] ? kthread+0x42e/0x520
[ 353.137365][ T4292] ? do_raw_spin_unlock+0x11d/0x230
[ 353.142844][ T4292] kobject_add_internal+0x5ba/0xcd0
[ 353.148348][ T4292] kobject_add+0x160/0x230
[ 353.152804][ T4292] ? kobject_init+0x1c0/0x1c0
[ 353.157958][ T4292] ? __raw_spin_lock_init+0x41/0x100
[ 353.163305][ T4292] ? klist_children_get+0x50/0x50
[ 353.168362][ T4292] ? get_device_parent+0x121/0x3e0
[ 353.173608][ T4292] device_add+0x470/0x1050
[ 353.178051][ T4292] ? device_initialize+0x2a5/0x4d0
[ 353.183193][ T4292] hci_conn_add_sysfs+0xd1/0x1e0
[ 353.188526][ T4292] le_conn_complete_evt+0xc2e/0x14d0
[ 353.193941][ T4292] ? cs_le_create_conn+0x5e0/0x5e0
[ 353.199080][ T4292] ? __mutex_trylock_common+0x15c/0x260
[ 353.204654][ T4292] hci_le_meta_evt+0x285/0x3ca0
[ 353.209613][ T4292] ? hci_event_packet+0x363/0x1310
[ 353.215007][ T4292] ? __lock_acquire+0x7b50/0x7b50
[ 353.220087][ T4292] ? hci_remote_host_features_evt+0x240/0x240
[ 353.226276][ T4292] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 353.232222][ T4292] ? mark_lock+0x94/0x320
[ 353.236600][ T4292] ? mutex_unlock+0x10/0x10
[ 353.241232][ T4292] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 353.247738][ T4292] ? lock_chain_count+0x20/0x20
[ 353.252633][ T4292] ? __rwlock_init+0x140/0x140
[ 353.257652][ T4292] hci_event_packet+0xe0b/0x1310
[ 353.262741][ T4292] ? _raw_spin_unlock+0x40/0x40
[ 353.267870][ T4292] ? rcu_lock_release+0x20/0x20
[ 353.272749][ T4292] ? hci_send_to_monitor+0x9c/0x4a0
[ 353.277986][ T4292] hci_rx_work+0x255/0xa10
[ 353.282459][ T4292] process_one_work+0x867/0xff0
[ 353.287580][ T4292] ? worker_detach_from_pool+0x240/0x240
[ 353.293264][ T4292] ? lockdep_hardirqs_off+0x70/0x100
[ 353.298574][ T4292] ? _raw_spin_lock_irq+0xb7/0xf0
[ 353.303913][ T4292] ? _raw_spin_lock_irqsave+0x100/0x100
[ 353.309499][ T4292] ? wq_worker_running+0x97/0x170
[ 353.314784][ T4292] worker_thread+0xad7/0x12a0
[ 353.319620][ T4292] kthread+0x42e/0x520
[ 353.323907][ T4292] ? rcu_lock_release+0x20/0x20
[ 353.328963][ T4292] ? kthread_blkcg+0xd0/0xd0
[ 353.333614][ T4292] ret_from_fork+0x1f/0x30
[ 353.338087][ T4292]
[ 353.343151][ T4292] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 353.356753][ T4292] Bluetooth: hci1: failed to register connection device
[ 353.381785][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 353.391375][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 353.398975][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 353.409308][ T146] Workqueue: hci1 hci_rx_work
[ 353.414023][ T146] Call Trace:
[ 353.417333][ T146]
[ 353.420455][ T146] dump_stack_lvl+0x188/0x250
[ 353.425317][ T146] ? show_regs_print_info+0x20/0x20
[ 353.430806][ T146] ? load_image+0x410/0x410
[ 353.435342][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 353.440503][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 353.445206][ T146] ? kthread+0x42e/0x520
[ 353.449761][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 353.455080][ T146] kobject_add_internal+0x5ba/0xcd0
[ 353.460495][ T146] kobject_add+0x160/0x230
[ 353.464936][ T146] ? kobject_init+0x1c0/0x1c0
[ 353.469658][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 353.475151][ T146] ? klist_children_get+0x50/0x50
[ 353.480291][ T146] ? get_device_parent+0x121/0x3e0
[ 353.485647][ T146] device_add+0x470/0x1050
[ 353.490195][ T146] ? device_initialize+0x2a5/0x4d0
[ 353.495332][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 353.500300][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 353.505614][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 353.511059][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 353.516760][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 353.521670][ T146] ? hci_event_packet+0x363/0x1310
[ 353.526826][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 353.532034][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 353.538134][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 353.543918][ T146] ? mark_lock+0x94/0x320
[ 353.548373][ T146] ? mutex_unlock+0x10/0x10
[ 353.552903][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 353.559001][ T146] ? lock_chain_count+0x20/0x20
[ 353.563974][ T146] ? __rwlock_init+0x140/0x140
[ 353.568762][ T146] hci_event_packet+0xe0b/0x1310
[ 353.573987][ T146] ? _raw_spin_unlock+0x40/0x40
[ 353.578911][ T146] ? rcu_lock_release+0x20/0x20
[ 353.583792][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 353.589209][ T146] hci_rx_work+0x255/0xa10
[ 353.593673][ T146] process_one_work+0x867/0xff0
[ 353.598787][ T146] ? worker_detach_from_pool+0x240/0x240
[ 353.604433][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 353.609841][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 353.615005][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 353.620581][ T146] ? wq_worker_running+0x97/0x170
[ 353.625717][ T146] worker_thread+0xad7/0x12a0
[ 353.630464][ T146] kthread+0x42e/0x520
[ 353.634663][ T146] ? rcu_lock_release+0x20/0x20
[ 353.639533][ T146] ? kthread_blkcg+0xd0/0xd0
[ 353.644135][ T146] ret_from_fork+0x1f/0x30
[ 353.649006][ T146]
[ 353.652985][ T4250] Bluetooth: hci1: command 0x0406 tx timeout
[ 353.659065][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 353.672618][ T146] Bluetooth: hci1: failed to register connection device
[ 353.698650][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 353.708255][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 353.715855][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 353.726025][ T146] Workqueue: hci1 hci_rx_work
[ 353.730741][ T146] Call Trace:
[ 353.734036][ T146]
[ 353.737112][ T146] dump_stack_lvl+0x188/0x250
[ 353.741884][ T146] ? show_regs_print_info+0x20/0x20
[ 353.747135][ T146] ? load_image+0x410/0x410
[ 353.751771][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 353.756957][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 353.761688][ T146] ? kthread+0x42e/0x520
[ 353.765989][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 353.771350][ T146] kobject_add_internal+0x5ba/0xcd0
[ 353.776650][ T146] kobject_add+0x160/0x230
[ 353.781289][ T146] ? kobject_init+0x1c0/0x1c0
[ 353.786352][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 353.791851][ T146] ? klist_children_get+0x50/0x50
[ 353.797207][ T146] ? get_device_parent+0x121/0x3e0
[ 353.802452][ T146] device_add+0x470/0x1050
[ 353.806952][ T146] ? device_initialize+0x2a5/0x4d0
[ 353.812217][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 353.817377][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 353.823088][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 353.828293][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 353.833871][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 353.838786][ T146] ? hci_event_packet+0x363/0x1310
[ 353.843934][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 353.848992][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 353.855208][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 353.860867][ T146] ? mark_lock+0x94/0x320
[ 353.865466][ T146] ? mutex_unlock+0x10/0x10
[ 353.869992][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 353.876114][ T146] ? lock_chain_count+0x20/0x20
[ 353.881118][ T146] ? __rwlock_init+0x140/0x140
[ 353.885910][ T146] hci_event_packet+0xe0b/0x1310
[ 353.890867][ T146] ? _raw_spin_unlock+0x40/0x40
[ 353.895735][ T146] ? rcu_lock_release+0x20/0x20
[ 353.900604][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 353.905856][ T146] hci_rx_work+0x255/0xa10
[ 353.910448][ T146] process_one_work+0x867/0xff0
[ 353.915445][ T146] ? worker_detach_from_pool+0x240/0x240
[ 353.921116][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 353.926423][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 353.931946][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 353.937625][ T146] ? wq_worker_running+0x97/0x170
[ 353.942768][ T146] worker_thread+0xad7/0x12a0
[ 353.947535][ T146] kthread+0x42e/0x520
[ 353.951630][ T146] ? rcu_lock_release+0x20/0x20
[ 353.956713][ T146] ? kthread_blkcg+0xd0/0xd0
[ 353.961327][ T146] ret_from_fork+0x1f/0x30
[ 353.965864][ T146]
[ 353.970080][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 353.984179][ T146] Bluetooth: hci1: failed to register connection device
[ 354.017097][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 354.027094][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 354.034720][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 354.045128][ T146] Workqueue: hci1 hci_rx_work
[ 354.050007][ T146] Call Trace:
[ 354.053300][ T146]
[ 354.056272][ T146] dump_stack_lvl+0x188/0x250
[ 354.061124][ T146] ? show_regs_print_info+0x20/0x20
[ 354.066385][ T146] ? load_image+0x410/0x410
[ 354.070924][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 354.076080][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 354.080832][ T146] ? kthread+0x42e/0x520
[ 354.085132][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 354.090613][ T146] kobject_add_internal+0x5ba/0xcd0
[ 354.095841][ T146] kobject_add+0x160/0x230
[ 354.100283][ T146] ? kobject_init+0x1c0/0x1c0
[ 354.105159][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 354.110565][ T146] ? klist_children_get+0x50/0x50
[ 354.115894][ T146] ? get_device_parent+0x121/0x3e0
[ 354.121118][ T146] device_add+0x470/0x1050
[ 354.125562][ T146] ? device_initialize+0x2a5/0x4d0
[ 354.130697][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 354.135755][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 354.141099][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 354.146251][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 354.152204][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 354.157354][ T146] ? hci_event_packet+0x363/0x1310
[ 354.162696][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 354.167955][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 354.174253][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 354.180402][ T146] ? mark_lock+0x94/0x320
[ 354.184793][ T146] ? mutex_unlock+0x10/0x10
[ 354.189458][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 354.195559][ T146] ? lock_chain_count+0x20/0x20
[ 354.200433][ T146] ? __rwlock_init+0x140/0x140
[ 354.205398][ T146] hci_event_packet+0xe0b/0x1310
[ 354.210508][ T146] ? _raw_spin_unlock+0x40/0x40
[ 354.215408][ T146] ? rcu_lock_release+0x20/0x20
[ 354.220384][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 354.225633][ T146] hci_rx_work+0x255/0xa10
[ 354.230099][ T146] process_one_work+0x867/0xff0
[ 354.235201][ T146] ? worker_detach_from_pool+0x240/0x240
[ 354.241393][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 354.246993][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 354.252069][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 354.258237][ T146] ? wq_worker_running+0x97/0x170
[ 354.263539][ T146] worker_thread+0xad7/0x12a0
[ 354.268700][ T146] kthread+0x42e/0x520
[ 354.272903][ T146] ? rcu_lock_release+0x20/0x20
[ 354.278232][ T146] ? kthread_blkcg+0xd0/0xd0
[ 354.283089][ T146] ret_from_fork+0x1f/0x30
[ 354.287670][ T146]
[ 354.292718][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 354.306406][ T146] Bluetooth: hci1: failed to register connection device
[ 354.331669][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 354.341221][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 354.349184][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 354.359518][ T146] Workqueue: hci1 hci_rx_work
[ 354.364429][ T146] Call Trace:
[ 354.367820][ T146]
[ 354.370761][ T146] dump_stack_lvl+0x188/0x250
[ 354.375452][ T146] ? show_regs_print_info+0x20/0x20
[ 354.380758][ T146] ? load_image+0x410/0x410
[ 354.385324][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 354.390703][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 354.396036][ T146] ? kthread+0x42e/0x520
[ 354.400323][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 354.405550][ T146] kobject_add_internal+0x5ba/0xcd0
[ 354.411079][ T146] kobject_add+0x160/0x230
[ 354.415714][ T146] ? kobject_init+0x1c0/0x1c0
[ 354.420482][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 354.425810][ T146] ? klist_children_get+0x50/0x50
[ 354.430865][ T146] ? get_device_parent+0x121/0x3e0
[ 354.436005][ T146] device_add+0x470/0x1050
[ 354.440639][ T146] ? device_initialize+0x2a5/0x4d0
[ 354.445866][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 354.450928][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 354.456433][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 354.461606][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 354.467201][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 354.472293][ T146] ? hci_event_packet+0x363/0x1310
[ 354.477430][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 354.482497][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 354.488626][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 354.494377][ T146] ? mark_lock+0x94/0x320
[ 354.499014][ T146] ? mutex_unlock+0x10/0x10
[ 354.503653][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 354.509655][ T146] ? lock_chain_count+0x20/0x20
[ 354.514533][ T146] ? __rwlock_init+0x140/0x140
[ 354.519610][ T146] hci_event_packet+0xe0b/0x1310
[ 354.524899][ T146] ? _raw_spin_unlock+0x40/0x40
[ 354.529873][ T146] ? rcu_lock_release+0x20/0x20
[ 354.534885][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 354.540237][ T146] hci_rx_work+0x255/0xa10
[ 354.544692][ T146] process_one_work+0x867/0xff0
[ 354.549801][ T146] ? worker_detach_from_pool+0x240/0x240
[ 354.555756][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 354.561535][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 354.566678][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 354.572245][ T146] ? wq_worker_running+0x97/0x170
[ 354.577291][ T146] worker_thread+0xad7/0x12a0
[ 354.582029][ T146] kthread+0x42e/0x520
[ 354.586308][ T146] ? rcu_lock_release+0x20/0x20
[ 354.591291][ T146] ? kthread_blkcg+0xd0/0xd0
[ 354.595998][ T146] ret_from_fork+0x1f/0x30
[ 354.600449][ T146]
[ 354.606021][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 354.619587][ T146] Bluetooth: hci1: failed to register connection device
[ 354.642019][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 354.652043][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 354.659822][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 354.670568][ T146] Workqueue: hci1 hci_rx_work
[ 354.675265][ T146] Call Trace:
[ 354.678554][ T146]
[ 354.681498][ T146] dump_stack_lvl+0x188/0x250
[ 354.686208][ T146] ? show_regs_print_info+0x20/0x20
[ 354.691568][ T146] ? load_image+0x410/0x410
[ 354.696154][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 354.701486][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 354.706193][ T146] ? kthread+0x42e/0x520
[ 354.710641][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 354.715982][ T146] kobject_add_internal+0x5ba/0xcd0
[ 354.721244][ T146] kobject_add+0x160/0x230
[ 354.725711][ T146] ? kobject_init+0x1c0/0x1c0
[ 354.730422][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 354.735749][ T146] ? klist_children_get+0x50/0x50
[ 354.740812][ T146] ? get_device_parent+0x121/0x3e0
[ 354.746316][ T146] device_add+0x470/0x1050
[ 354.752532][ T146] ? device_initialize+0x2a5/0x4d0
[ 354.757670][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 354.762643][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 354.770921][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 354.776078][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 354.781959][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 354.787052][ T146] ? hci_event_packet+0x363/0x1310
[ 354.792214][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 354.797274][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 354.803652][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 354.809400][ T146] ? mark_lock+0x94/0x320
[ 354.813755][ T146] ? mutex_unlock+0x10/0x10
[ 354.818393][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 354.824547][ T146] ? lock_chain_count+0x20/0x20
[ 354.829755][ T146] ? __rwlock_init+0x140/0x140
[ 354.834555][ T146] hci_event_packet+0xe0b/0x1310
[ 354.839531][ T146] ? _raw_spin_unlock+0x40/0x40
[ 354.844399][ T146] ? rcu_lock_release+0x20/0x20
[ 354.849395][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 354.854772][ T146] hci_rx_work+0x255/0xa10
[ 354.859232][ T146] process_one_work+0x867/0xff0
[ 354.864138][ T146] ? worker_detach_from_pool+0x240/0x240
[ 354.869922][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 354.875239][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 354.880286][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 354.886494][ T146] ? wq_worker_running+0x97/0x170
[ 354.891638][ T146] worker_thread+0xad7/0x12a0
[ 354.896391][ T146] kthread+0x42e/0x520
[ 354.900597][ T146] ? rcu_lock_release+0x20/0x20
[ 354.905483][ T146] ? kthread_blkcg+0xd0/0xd0
[ 354.910106][ T146] ret_from_fork+0x1f/0x30
[ 354.914575][ T146]
[ 354.928993][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 354.942585][ T146] Bluetooth: hci1: failed to register connection device
[ 354.993007][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 355.003031][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 355.010639][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 355.020965][ T146] Workqueue: hci1 hci_rx_work
[ 355.025795][ T146] Call Trace:
[ 355.029101][ T146]
[ 355.032254][ T146] dump_stack_lvl+0x188/0x250
[ 355.037170][ T146] ? show_regs_print_info+0x20/0x20
[ 355.042403][ T146] ? load_image+0x410/0x410
[ 355.046970][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 355.052558][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 355.057330][ T146] ? kthread+0x42e/0x520
[ 355.061726][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 355.067297][ T146] kobject_add_internal+0x5ba/0xcd0
[ 355.072618][ T146] kobject_add+0x160/0x230
[ 355.077251][ T146] ? kobject_init+0x1c0/0x1c0
[ 355.082064][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 355.087581][ T146] ? klist_children_get+0x50/0x50
[ 355.092626][ T146] ? get_device_parent+0x121/0x3e0
[ 355.097978][ T146] device_add+0x470/0x1050
[ 355.102519][ T146] ? device_initialize+0x2a5/0x4d0
[ 355.107669][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 355.112904][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 355.118357][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 355.123504][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 355.129093][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 355.133990][ T146] ? hci_event_packet+0x363/0x1310
[ 355.139142][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 355.144373][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 355.150508][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 355.156313][ T146] ? mark_lock+0x94/0x320
[ 355.160873][ T146] ? mutex_unlock+0x10/0x10
[ 355.165445][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 355.171621][ T146] ? lock_chain_count+0x20/0x20
[ 355.176506][ T146] ? __rwlock_init+0x140/0x140
[ 355.181348][ T146] hci_event_packet+0xe0b/0x1310
[ 355.186468][ T146] ? _raw_spin_unlock+0x40/0x40
[ 355.191344][ T146] ? rcu_lock_release+0x20/0x20
[ 355.196244][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 355.201591][ T146] hci_rx_work+0x255/0xa10
[ 355.206168][ T146] process_one_work+0x867/0xff0
[ 355.211348][ T146] ? worker_detach_from_pool+0x240/0x240
[ 355.217152][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 355.222566][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 355.228060][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 355.233634][ T146] ? wq_worker_running+0x97/0x170
[ 355.238677][ T146] worker_thread+0xad7/0x12a0
[ 355.243388][ T146] kthread+0x42e/0x520
[ 355.247477][ T146] ? rcu_lock_release+0x20/0x20
[ 355.252446][ T146] ? kthread_blkcg+0xd0/0xd0
[ 355.257175][ T146] ret_from_fork+0x1f/0x30
[ 355.261741][ T146]
[ 355.265384][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 355.279089][ T146] Bluetooth: hci1: failed to register connection device
[ 355.301229][ T146] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci1/hci1:201'
[ 355.311276][ T146] CPU: 0 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 355.318783][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 355.328887][ T146] Workqueue: hci1 hci_rx_work
[ 355.333614][ T146] Call Trace:
[ 355.336909][ T146]
[ 355.339862][ T146] dump_stack_lvl+0x188/0x250
[ 355.344687][ T146] ? show_regs_print_info+0x20/0x20
[ 355.349939][ T146] ? load_image+0x410/0x410
[ 355.354525][ T146] sysfs_create_dir_ns+0x26a/0x290
[ 355.359670][ T146] ? sysfs_warn_dup+0xa0/0xa0
[ 355.364373][ T146] ? kthread+0x42e/0x520
[ 355.368659][ T146] ? do_raw_spin_unlock+0x11d/0x230
[ 355.373914][ T146] kobject_add_internal+0x5ba/0xcd0
[ 355.379260][ T146] kobject_add+0x160/0x230
[ 355.383834][ T146] ? kobject_init+0x1c0/0x1c0
[ 355.388778][ T146] ? __raw_spin_lock_init+0x41/0x100
[ 355.394139][ T146] ? klist_children_get+0x50/0x50
[ 355.399239][ T146] ? get_device_parent+0x121/0x3e0
[ 355.404688][ T146] device_add+0x470/0x1050
[ 355.409189][ T146] ? device_initialize+0x2a5/0x4d0
[ 355.414346][ T146] hci_conn_add_sysfs+0xd1/0x1e0
[ 355.419600][ T146] le_conn_complete_evt+0xc2e/0x14d0
[ 355.425040][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 355.430398][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 355.435997][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 355.440877][ T146] ? hci_event_packet+0x363/0x1310
[ 355.446018][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 355.451166][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 355.457453][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 355.463209][ T146] ? mark_lock+0x94/0x320
[ 355.467643][ T146] ? mutex_unlock+0x10/0x10
[ 355.472374][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 355.478511][ T146] ? lock_chain_count+0x20/0x20
[ 355.483525][ T146] ? __rwlock_init+0x140/0x140
[ 355.488342][ T146] hci_event_packet+0xe0b/0x1310
[ 355.493317][ T146] ? _raw_spin_unlock+0x40/0x40
[ 355.498244][ T146] ? rcu_lock_release+0x20/0x20
[ 355.503238][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 355.508484][ T146] hci_rx_work+0x255/0xa10
[ 355.512947][ T146] process_one_work+0x867/0xff0
[ 355.517876][ T146] ? worker_detach_from_pool+0x240/0x240
[ 355.523752][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 355.529227][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 355.534385][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 355.540104][ T146] ? wq_worker_running+0x97/0x170
[ 355.545156][ T146] worker_thread+0xad7/0x12a0
[ 355.550128][ T146] kthread+0x42e/0x520
[ 355.554228][ T146] ? rcu_lock_release+0x20/0x20
[ 355.559126][ T146] ? kthread_blkcg+0xd0/0xd0
[ 355.563743][ T146] ret_from_fork+0x1f/0x30
[ 355.568209][ T146]
[ 355.572235][ T146] kobject_add_internal failed for hci1:201 with -EEXIST, don't try to register things with the same name in the same directory.
[ 355.586376][ T146] Bluetooth: hci1: failed to register connection device
[ 355.597808][ T146] ==================================================================
[ 355.606167][ T146] BUG: KASAN: use-after-free in l2cap_connect_cfm+0x76a/0x11b0
[ 355.614034][ T146] Read of size 8 at addr ffff888023bc7488 by task kworker/u5:0/146
[ 355.621942][ T146]
[ 355.624280][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Not tainted syzkaller #0
[ 355.632103][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 355.642184][ T146] Workqueue: hci1 hci_rx_work
[ 355.646996][ T146] Call Trace:
[ 355.650295][ T146]
[ 355.653245][ T146] dump_stack_lvl+0x188/0x250
[ 355.657946][ T146] ? show_regs_print_info+0x20/0x20
[ 355.663199][ T146] ? load_image+0x410/0x410
[ 355.667916][ T146] ? _raw_spin_lock_irqsave+0xbc/0x100
[ 355.673404][ T146] ? __mutex_unlock_slowpath+0x658/0x6c0
[ 355.679197][ T146] print_address_description+0x60/0x2d0
[ 355.684774][ T146] ? l2cap_connect_cfm+0x76a/0x11b0
[ 355.690014][ T146] kasan_report+0xdf/0x130
[ 355.694602][ T146] ? l2cap_connect_cfm+0x76a/0x11b0
[ 355.699930][ T146] l2cap_connect_cfm+0x76a/0x11b0
[ 355.704985][ T146] ? l2cap_ertm_resend+0xf30/0xf30
[ 355.710214][ T146] ? l2cap_ertm_resend+0xf30/0xf30
[ 355.715478][ T146] le_conn_complete_evt+0xd36/0x14d0
[ 355.721168][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 355.726431][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 355.732014][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 355.736895][ T146] ? hci_event_packet+0x363/0x1310
[ 355.742072][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 355.747132][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 355.753258][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 355.758927][ T146] ? mark_lock+0x94/0x320
[ 355.763315][ T146] ? mutex_unlock+0x10/0x10
[ 355.767844][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 355.774151][ T146] ? lock_chain_count+0x20/0x20
[ 355.779217][ T146] ? __rwlock_init+0x140/0x140
[ 355.784191][ T146] hci_event_packet+0xe0b/0x1310
[ 355.789277][ T146] ? _raw_spin_unlock+0x40/0x40
[ 355.794274][ T146] ? rcu_lock_release+0x20/0x20
[ 355.799223][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 355.804585][ T146] hci_rx_work+0x255/0xa10
[ 355.809127][ T146] process_one_work+0x867/0xff0
[ 355.814029][ T146] ? worker_detach_from_pool+0x240/0x240
[ 355.820243][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 355.825574][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 355.830804][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 355.836494][ T146] ? wq_worker_running+0x97/0x170
[ 355.841658][ T146] worker_thread+0xad7/0x12a0
[ 355.846384][ T146] kthread+0x42e/0x520
[ 355.850480][ T146] ? rcu_lock_release+0x20/0x20
[ 355.855477][ T146] ? kthread_blkcg+0xd0/0xd0
[ 355.860285][ T146] ret_from_fork+0x1f/0x30
[ 355.864742][ T146]
[ 355.868075][ T146]
[ 355.870412][ T146] Allocated by task 146:
[ 355.874668][ T146] __kasan_kmalloc+0xaf/0xe0
[ 355.879556][ T146] l2cap_chan_create+0x4c/0x730
[ 355.884634][ T146] l2cap_sock_alloc+0x13a/0x200
[ 355.889555][ T146] l2cap_sock_new_connection_cb+0xe0/0x1d0
[ 355.895597][ T146] l2cap_connect_cfm+0x369/0x11b0
[ 355.900754][ T146] le_conn_complete_evt+0xd36/0x14d0
[ 355.906456][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 355.911426][ T146] hci_event_packet+0xe0b/0x1310
[ 355.916392][ T146] hci_rx_work+0x255/0xa10
[ 355.920831][ T146] process_one_work+0x867/0xff0
[ 355.925704][ T146] worker_thread+0xad7/0x12a0
[ 355.930412][ T146] kthread+0x42e/0x520
[ 355.934503][ T146] ret_from_fork+0x1f/0x30
[ 355.939032][ T146]
[ 355.941465][ T146] Freed by task 7184:
[ 355.945452][ T146] kasan_set_track+0x4b/0x70
[ 355.950065][ T146] kasan_set_free_info+0x1f/0x40
[ 355.955024][ T146] ____kasan_slab_free+0xd5/0x110
[ 355.960073][ T146] slab_free_freelist_hook+0xec/0x170
[ 355.965551][ T146] kfree+0xef/0x2a0
[ 355.969381][ T146] l2cap_sock_cleanup_listen+0xea/0x270
[ 355.974945][ T146] l2cap_sock_release+0x66/0x1e0
[ 355.980062][ T146] sock_close+0xbf/0x210
[ 355.984345][ T146] __fput+0x212/0x8c0
[ 355.988536][ T146] task_work_run+0x125/0x1a0
[ 355.993185][ T146] exit_to_user_mode_loop+0x10f/0x130
[ 355.998574][ T146] exit_to_user_mode_prepare+0xee/0x180
[ 356.004142][ T146] syscall_exit_to_user_mode+0x16/0x40
[ 356.009809][ T146] do_syscall_64+0x58/0xa0
[ 356.014338][ T146] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 356.020428][ T146]
[ 356.022770][ T146] The buggy address belongs to the object at ffff888023bc7000
[ 356.022770][ T146] which belongs to the cache kmalloc-2k of size 2048
[ 356.036857][ T146] The buggy address is located 1160 bytes inside of
[ 356.036857][ T146] 2048-byte region [ffff888023bc7000, ffff888023bc7800)
[ 356.050753][ T146] The buggy address belongs to the page:
[ 356.056622][ T146] page:ffffea00008ef000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x23bc0
[ 356.066909][ T146] head:ffffea00008ef000 order:3 compound_mapcount:0 compound_pincount:0
[ 356.075340][ T146] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
[ 356.083399][ T146] raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888016c42000
[ 356.092163][ T146] raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
[ 356.100842][ T146] page dumped because: kasan: bad access detected
[ 356.107424][ T146] page_owner tracks the page as allocated
[ 356.113297][ T146] page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4256, ts 78519406820, free_ts 78512727502
[ 356.133975][ T146] get_page_from_freelist+0x24f6/0x2670
[ 356.139561][ T146] __alloc_pages+0x1ee/0x480
[ 356.144167][ T146] new_slab+0xc0/0x4b0
[ 356.148252][ T146] ___slab_alloc+0x807/0xdd0
[ 356.152865][ T146] __kmalloc_node+0x142/0x3a0
[ 356.157560][ T146] qdisc_alloc+0x97/0xae0
[ 356.162103][ T146] qdisc_create_dflt+0x5f/0x410
[ 356.166977][ T146] dev_activate+0x33d/0x1330
[ 356.171778][ T146] __dev_open+0x33b/0x430
[ 356.176125][ T146] __dev_change_flags+0x1e4/0x6a0
[ 356.181173][ T146] dev_change_flags+0x78/0x1a0
[ 356.185951][ T146] do_setlink+0xca4/0x29d0
[ 356.190393][ T146] rtnl_newlink+0x15bb/0x1920
[ 356.195205][ T146] rtnetlink_rcv_msg+0x82c/0xf00
[ 356.200166][ T146] netlink_rcv_skb+0x1e9/0x430
[ 356.204946][ T146] netlink_unicast+0x78f/0x940
[ 356.209732][ T146] page last free stack trace:
[ 356.214416][ T146] free_unref_page_prepare+0x637/0x6c0
[ 356.219895][ T146] free_unref_page+0x8f/0x2a0
[ 356.224770][ T146] qlist_free_all+0x35/0x90
[ 356.229299][ T146] kasan_quarantine_reduce+0x150/0x160
[ 356.234977][ T146] __kasan_slab_alloc+0x2f/0xc0
[ 356.239846][ T146] slab_post_alloc_hook+0x4c/0x380
[ 356.244976][ T146] kmem_cache_alloc_trace+0x165/0x290
[ 356.250453][ T146] netdevice_event+0x3ad/0x930
[ 356.255480][ T146] raw_notifier_call_chain+0xcb/0x160
[ 356.260885][ T146] dev_set_mac_address+0x2ed/0x400
[ 356.266052][ T146] dev_set_mac_address_user+0x2d/0x50
[ 356.271548][ T146] do_setlink+0x842/0x29d0
[ 356.275982][ T146] rtnl_newlink+0x15bb/0x1920
[ 356.280781][ T146] rtnetlink_rcv_msg+0x82c/0xf00
[ 356.285757][ T146] netlink_rcv_skb+0x1e9/0x430
[ 356.290668][ T146] netlink_unicast+0x78f/0x940
[ 356.295467][ T146]
[ 356.297899][ T146] Memory state around the buggy address:
[ 356.303638][ T146] ffff888023bc7380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 356.311833][ T146] ffff888023bc7400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 356.320057][ T146] >ffff888023bc7480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 356.328322][ T146] ^
[ 356.332689][ T146] ffff888023bc7500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 356.340957][ T146] ffff888023bc7580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 356.349509][ T146] ==================================================================
[ 356.357600][ T146] Disabling lock debugging due to kernel taint
[ 356.364923][ T4250] Bluetooth: hci1: command 0x0406 tx timeout
[ 356.372418][ T146] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 356.379990][ T146] CPU: 1 PID: 146 Comm: kworker/u5:0 Tainted: G B syzkaller #0
[ 356.388899][ T146] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
[ 356.399013][ T146] Workqueue: hci1 hci_rx_work
2026/06/15 05:44:10 executed programs: 682
[ 356.403835][ T146] Call Trace:
[ 356.407151][ T146]
[ 356.410349][ T146] dump_stack_lvl+0x188/0x250
[ 356.415201][ T146] ? show_regs_print_info+0x20/0x20
[ 356.420535][ T146] ? load_image+0x410/0x410
[ 356.425090][ T146] panic+0x2f8/0x850
[ 356.429047][ T146] ? bpf_jit_dump+0xd0/0xd0
[ 356.433689][ T146] ? _raw_spin_unlock_irqrestore+0x10d/0x120
[ 356.440296][ T146] ? _raw_spin_unlock+0x40/0x40
[ 356.445300][ T146] ? l2cap_connect_cfm+0x76a/0x11b0
[ 356.450647][ T146] check_panic_on_warn+0x80/0xa0
[ 356.455836][ T146] ? l2cap_connect_cfm+0x76a/0x11b0
[ 356.461083][ T146] end_report+0x6d/0xf0
[ 356.465402][ T146] kasan_report+0x102/0x130
[ 356.469950][ T146] ? l2cap_connect_cfm+0x76a/0x11b0
[ 356.475290][ T146] l2cap_connect_cfm+0x76a/0x11b0
[ 356.480385][ T146] ? l2cap_ertm_resend+0xf30/0xf30
[ 356.486248][ T146] ? l2cap_ertm_resend+0xf30/0xf30
[ 356.491505][ T146] le_conn_complete_evt+0xd36/0x14d0
[ 356.497030][ T146] ? cs_le_create_conn+0x5e0/0x5e0
[ 356.502169][ T146] ? __mutex_trylock_common+0x15c/0x260
[ 356.507833][ T146] hci_le_meta_evt+0x285/0x3ca0
[ 356.512701][ T146] ? hci_event_packet+0x363/0x1310
[ 356.517919][ T146] ? __lock_acquire+0x7b50/0x7b50
[ 356.522970][ T146] ? hci_remote_host_features_evt+0x240/0x240
[ 356.529229][ T146] ? __mutex_unlock_slowpath+0x1b0/0x6c0
[ 356.535032][ T146] ? mark_lock+0x94/0x320
[ 356.539391][ T146] ? mutex_unlock+0x10/0x10
[ 356.543916][ T146] ? lockdep_hardirqs_on_prepare+0x448/0x7c0
[ 356.550235][ T146] ? lock_chain_count+0x20/0x20
[ 356.555281][ T146] ? __rwlock_init+0x140/0x140
[ 356.560100][ T146] hci_event_packet+0xe0b/0x1310
[ 356.565147][ T146] ? _raw_spin_unlock+0x40/0x40
[ 356.570102][ T146] ? rcu_lock_release+0x20/0x20
[ 356.575161][ T146] ? hci_send_to_monitor+0x9c/0x4a0
[ 356.580822][ T146] hci_rx_work+0x255/0xa10
[ 356.585279][ T146] process_one_work+0x867/0xff0
[ 356.590178][ T146] ? worker_detach_from_pool+0x240/0x240
[ 356.596343][ T146] ? lockdep_hardirqs_off+0x70/0x100
[ 356.601872][ T146] ? _raw_spin_lock_irq+0xb7/0xf0
[ 356.607035][ T146] ? _raw_spin_lock_irqsave+0x100/0x100
[ 356.612703][ T146] ? wq_worker_running+0x97/0x170
[ 356.617912][ T146] worker_thread+0xad7/0x12a0
[ 356.622799][ T146] kthread+0x42e/0x520
[ 356.626880][ T146] ? rcu_lock_release+0x20/0x20
[ 356.631757][ T146] ? kthread_blkcg+0xd0/0xd0
[ 356.636420][ T146] ret_from_fork+0x1f/0x30
[ 356.641045][ T146]
[ 356.644475][ T146] Kernel Offset: disabled
[ 356.648847][ T146] Rebooting in 86400 seconds..