[ 396.833431] ? lock_acquire+0x180/0x3a0 [ 396.833438] ? kasan_check_write+0x14/0x20 [ 396.833443] ? do_raw_spin_lock+0xd0/0x240 [ 396.833452] worker_thread+0x85/0xb60 [ 396.833457] ? __kthread_parkme+0x37/0x1c0 [ 396.833470] kthread+0x347/0x410 [ 396.833475] ? process_one_work+0x15a0/0x15a0 [ 396.833479] ? __kthread_cancel_work+0x170/0x170 [ 396.833487] ret_from_fork+0x24/0x30 [ 396.835417] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.835427] Bluetooth: hci5: failed to register connection device [ 396.835525] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.835531] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.835535] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.835542] Workqueue: hci5 hci_rx_work [ 396.835546] Call Trace: [ 396.835555] dump_stack+0x17c/0x226 [ 396.835566] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.835574] sysfs_create_dir_ns+0x1c2/0x270 [ 396.835581] ? sysfs_create_mount_point+0x80/0x80 [ 396.835589] ? lock_downgrade+0x860/0x860 [ 396.835599] ? do_raw_spin_unlock+0x177/0x260 [ 396.835608] kobject_add_internal+0x257/0x8d0 [ 396.835618] kobject_add+0x10f/0x170 [ 396.835623] ? kobject_add_internal+0x8d0/0x8d0 [ 396.835628] ? __lockdep_init_map+0x105/0x590 [ 396.835634] ? get_device+0x20/0x20 [ 396.835639] ? lockdep_init_map+0x9/0x10 [ 396.835644] ? __raw_spin_lock_init+0x2d/0x100 [ 396.835654] device_add+0x33e/0x16b0 [ 396.835663] ? _dev_warn+0x100/0x100 [ 396.835670] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.835675] ? lock_downgrade+0x860/0x860 [ 396.835685] hci_conn_add_sysfs+0x8e/0x160 [ 396.835693] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.835703] hci_event_packet+0x1a08/0x68e0 [ 396.835710] ? mark_held_locks+0x130/0x130 [ 396.835716] ? __lock_acquire+0x764/0x47c0 [ 396.835725] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.835740] ? mark_held_locks+0xc7/0x130 [ 396.835748] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.835756] ? skb_dequeue+0x14d/0x1f0 [ 396.835761] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.835767] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.835773] ? trace_hardirqs_on+0x28/0x190 [ 396.835783] ? kasan_check_read+0x11/0x20 [ 396.835792] hci_rx_work+0x385/0xa70 [ 396.835804] process_one_work+0x7b9/0x15a0 [ 396.835816] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.835820] ? lock_acquire+0x180/0x3a0 [ 396.835827] ? kasan_check_write+0x14/0x20 [ 396.835831] ? do_raw_spin_lock+0xd0/0x240 [ 396.835840] worker_thread+0x85/0xb60 [ 396.835845] ? __kthread_parkme+0x37/0x1c0 [ 396.835857] kthread+0x347/0x410 [ 396.835861] ? process_one_work+0x15a0/0x15a0 [ 396.835866] ? __kthread_cancel_work+0x170/0x170 [ 396.835873] ret_from_fork+0x24/0x30 [ 396.835894] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.835901] Bluetooth: hci5: failed to register connection device [ 396.835988] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.835993] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.835996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.836001] Workqueue: hci5 hci_rx_work [ 396.836004] Call Trace: [ 396.836010] dump_stack+0x17c/0x226 [ 396.836019] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.836027] sysfs_create_dir_ns+0x1c2/0x270 [ 396.836033] ? sysfs_create_mount_point+0x80/0x80 [ 396.836039] ? lock_downgrade+0x860/0x860 [ 396.836050] ? do_raw_spin_unlock+0x177/0x260 [ 396.836058] kobject_add_internal+0x257/0x8d0 [ 396.836068] kobject_add+0x10f/0x170 [ 396.836073] ? kobject_add_internal+0x8d0/0x8d0 [ 396.836078] ? __lockdep_init_map+0x105/0x590 [ 396.836083] ? get_device+0x20/0x20 [ 396.836087] ? lockdep_init_map+0x9/0x10 [ 396.836092] ? __raw_spin_lock_init+0x2d/0x100 [ 396.836101] device_add+0x33e/0x16b0 [ 396.836110] ? _dev_warn+0x100/0x100 [ 396.836117] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.836122] ? lock_downgrade+0x860/0x860 [ 396.836132] hci_conn_add_sysfs+0x8e/0x160 [ 396.836140] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.836150] hci_event_packet+0x1a08/0x68e0 [ 396.836156] ? mark_held_locks+0x130/0x130 [ 396.836163] ? __lock_acquire+0x764/0x47c0 [ 396.836171] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.836187] ? mark_held_locks+0xc7/0x130 [ 396.836194] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.836198] ? skb_dequeue+0x14d/0x1f0 [ 396.836203] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.836208] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.836214] ? trace_hardirqs_on+0x28/0x190 [ 396.836222] ? kasan_check_read+0x11/0x20 [ 396.836230] hci_rx_work+0x385/0xa70 [ 396.836241] process_one_work+0x7b9/0x15a0 [ 396.836251] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.836255] ? lock_acquire+0x180/0x3a0 [ 396.836261] ? kasan_check_write+0x14/0x20 [ 396.836267] ? do_raw_spin_lock+0xd0/0x240 [ 396.836275] worker_thread+0x85/0xb60 [ 396.836280] ? __kthread_parkme+0x37/0x1c0 [ 396.836292] kthread+0x347/0x410 [ 396.836297] ? process_one_work+0x15a0/0x15a0 [ 396.836301] ? __kthread_cancel_work+0x170/0x170 [ 396.836309] ret_from_fork+0x24/0x30 [ 396.836370] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.836377] Bluetooth: hci5: failed to register connection device [ 396.861611] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.861622] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.861625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.861635] Workqueue: hci5 hci_rx_work [ 396.861639] Call Trace: [ 396.861650] dump_stack+0x17c/0x226 [ 396.861663] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.861673] sysfs_create_dir_ns+0x1c2/0x270 [ 396.861680] ? sysfs_create_mount_point+0x80/0x80 [ 396.861689] ? lock_downgrade+0x860/0x860 [ 396.861700] ? do_raw_spin_unlock+0x177/0x260 [ 396.861709] kobject_add_internal+0x257/0x8d0 [ 396.861717] kobject_add+0x10f/0x170 [ 396.861723] ? kobject_add_internal+0x8d0/0x8d0 [ 396.861727] ? __lockdep_init_map+0x105/0x590 [ 396.861735] ? get_device+0x20/0x20 [ 396.861740] ? lockdep_init_map+0x9/0x10 [ 396.861746] ? __raw_spin_lock_init+0x2d/0x100 [ 396.861754] device_add+0x33e/0x16b0 [ 396.861763] ? _dev_warn+0x100/0x100 [ 396.861771] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.861777] ? lock_downgrade+0x860/0x860 [ 396.861787] hci_conn_add_sysfs+0x8e/0x160 [ 396.861795] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.861805] hci_event_packet+0x1a08/0x68e0 [ 396.861812] ? mark_held_locks+0x130/0x130 [ 396.861819] ? __lock_acquire+0x764/0x47c0 [ 396.861828] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.861841] ? mark_held_locks+0xc7/0x130 [ 396.861850] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.861858] ? skb_dequeue+0x14d/0x1f0 [ 396.861864] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.861870] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.861878] ? trace_hardirqs_on+0x28/0x190 [ 396.861887] ? kasan_check_read+0x11/0x20 [ 396.861895] hci_rx_work+0x385/0xa70 [ 396.861906] process_one_work+0x7b9/0x15a0 [ 396.861917] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.861921] ? lock_acquire+0x180/0x3a0 [ 396.861930] ? kasan_check_write+0x14/0x20 [ 396.861935] ? do_raw_spin_lock+0xd0/0x240 [ 396.861943] worker_thread+0x85/0xb60 [ 396.861948] ? __kthread_parkme+0x37/0x1c0 [ 396.861960] kthread+0x347/0x410 [ 396.861965] ? process_one_work+0x15a0/0x15a0 [ 396.861969] ? __kthread_cancel_work+0x170/0x170 [ 396.861976] ret_from_fork+0x24/0x30 [ 396.862063] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.862070] Bluetooth: hci5: failed to register connection device [ 396.867339] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.867348] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.867359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.867369] Workqueue: hci5 hci_rx_work [ 396.867373] Call Trace: [ 396.867384] dump_stack+0x17c/0x226 [ 396.867397] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.867406] sysfs_create_dir_ns+0x1c2/0x270 [ 396.867413] ? sysfs_create_mount_point+0x80/0x80 [ 396.867421] ? lock_downgrade+0x860/0x860 [ 396.867431] ? do_raw_spin_unlock+0x177/0x260 [ 396.867441] kobject_add_internal+0x257/0x8d0 [ 396.867451] kobject_add+0x10f/0x170 [ 396.867457] ? kobject_add_internal+0x8d0/0x8d0 [ 396.867462] ? __lockdep_init_map+0x105/0x590 [ 396.867469] ? get_device+0x20/0x20 [ 396.867474] ? lockdep_init_map+0x9/0x10 [ 396.867479] ? __raw_spin_lock_init+0x2d/0x100 [ 396.867491] device_add+0x33e/0x16b0 [ 396.867501] ? _dev_warn+0x100/0x100 [ 396.867509] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.867514] ? lock_downgrade+0x860/0x860 [ 396.867525] hci_conn_add_sysfs+0x8e/0x160 [ 396.867533] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.867544] hci_event_packet+0x1a08/0x68e0 [ 396.867550] ? mark_held_locks+0x130/0x130 [ 396.867557] ? __lock_acquire+0x764/0x47c0 [ 396.867566] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.867581] ? mark_held_locks+0xc7/0x130 [ 396.867590] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.867597] ? skb_dequeue+0x14d/0x1f0 [ 396.867602] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.867608] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.867615] ? trace_hardirqs_on+0x28/0x190 [ 396.867625] ? kasan_check_read+0x11/0x20 [ 396.867634] hci_rx_work+0x385/0xa70 [ 396.867646] process_one_work+0x7b9/0x15a0 [ 396.867658] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.867663] ? lock_acquire+0x180/0x3a0 [ 396.867669] ? kasan_check_write+0x14/0x20 [ 396.867674] ? do_raw_spin_lock+0xd0/0x240 [ 396.867684] worker_thread+0x85/0xb60 [ 396.867690] ? __kthread_parkme+0x37/0x1c0 [ 396.867702] kthread+0x347/0x410 [ 396.867707] ? process_one_work+0x15a0/0x15a0 [ 396.867712] ? __kthread_cancel_work+0x170/0x170 [ 396.867719] ret_from_fork+0x24/0x30 [ 396.867771] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.867779] Bluetooth: hci5: failed to register connection device [ 396.898358] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.898367] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.898371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.898380] Workqueue: hci5 hci_rx_work [ 396.898384] Call Trace: [ 396.898395] dump_stack+0x17c/0x226 [ 396.898408] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.898417] sysfs_create_dir_ns+0x1c2/0x270 [ 396.898423] ? sysfs_create_mount_point+0x80/0x80 [ 396.898432] ? lock_downgrade+0x860/0x860 [ 396.898443] ? do_raw_spin_unlock+0x177/0x260 [ 396.898452] kobject_add_internal+0x257/0x8d0 [ 396.898462] kobject_add+0x10f/0x170 [ 396.898468] ? kobject_add_internal+0x8d0/0x8d0 [ 396.898473] ? __lockdep_init_map+0x105/0x590 [ 396.898481] ? get_device+0x20/0x20 [ 396.898486] ? lockdep_init_map+0x9/0x10 [ 396.898491] ? __raw_spin_lock_init+0x2d/0x100 [ 396.898501] device_add+0x33e/0x16b0 [ 396.898510] ? _dev_warn+0x100/0x100 [ 396.898518] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.898523] ? lock_downgrade+0x860/0x860 [ 396.898534] hci_conn_add_sysfs+0x8e/0x160 [ 396.898542] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.898556] hci_event_packet+0x1a08/0x68e0 [ 396.898562] ? mark_held_locks+0x130/0x130 [ 396.898568] ? __lock_acquire+0x764/0x47c0 [ 396.898577] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.898593] ? mark_held_locks+0xc7/0x130 [ 396.898602] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.898609] ? skb_dequeue+0x14d/0x1f0 [ 396.898615] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.898620] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.898627] ? trace_hardirqs_on+0x28/0x190 [ 396.898637] ? kasan_check_read+0x11/0x20 [ 396.898646] hci_rx_work+0x385/0xa70 [ 396.898658] process_one_work+0x7b9/0x15a0 [ 396.898669] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.898673] ? lock_acquire+0x180/0x3a0 [ 396.898679] ? kasan_check_write+0x14/0x20 [ 396.898685] ? do_raw_spin_lock+0xd0/0x240 [ 396.898694] worker_thread+0x85/0xb60 [ 396.898699] ? __kthread_parkme+0x37/0x1c0 [ 396.898712] kthread+0x347/0x410 [ 396.898716] ? process_one_work+0x15a0/0x15a0 [ 396.898721] ? __kthread_cancel_work+0x170/0x170 [ 396.898729] ret_from_fork+0x24/0x30 [ 396.898749] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.898758] Bluetooth: hci5: failed to register connection device [ 396.903032] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.903041] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.903044] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.903053] Workqueue: hci5 hci_rx_work [ 396.903057] Call Trace: [ 396.903067] dump_stack+0x17c/0x226 [ 396.903078] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.903087] sysfs_create_dir_ns+0x1c2/0x270 [ 396.903094] ? sysfs_create_mount_point+0x80/0x80 [ 396.903102] ? lock_downgrade+0x860/0x860 [ 396.903112] ? do_raw_spin_unlock+0x177/0x260 [ 396.903124] kobject_add_internal+0x257/0x8d0 [ 396.903134] kobject_add+0x10f/0x170 [ 396.903140] ? kobject_add_internal+0x8d0/0x8d0 [ 396.903145] ? __lockdep_init_map+0x105/0x590 [ 396.903152] ? get_device+0x20/0x20 [ 396.903157] ? lockdep_init_map+0x9/0x10 [ 396.903162] ? __raw_spin_lock_init+0x2d/0x100 [ 396.903172] device_add+0x33e/0x16b0 [ 396.903181] ? _dev_warn+0x100/0x100 [ 396.903189] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.903194] ? lock_downgrade+0x860/0x860 [ 396.903205] hci_conn_add_sysfs+0x8e/0x160 [ 396.903213] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.903223] hci_event_packet+0x1a08/0x68e0 [ 396.903230] ? mark_held_locks+0x130/0x130 [ 396.903237] ? __lock_acquire+0x764/0x47c0 [ 396.903245] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.903260] ? mark_held_locks+0xc7/0x130 [ 396.903268] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.903274] ? skb_dequeue+0x14d/0x1f0 [ 396.903280] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.903285] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.903291] ? trace_hardirqs_on+0x28/0x190 [ 396.903301] ? kasan_check_read+0x11/0x20 [ 396.903310] hci_rx_work+0x385/0xa70 [ 396.903323] process_one_work+0x7b9/0x15a0 [ 396.903334] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.903339] ? lock_acquire+0x180/0x3a0 [ 396.903346] ? kasan_check_write+0x14/0x20 [ 396.903358] ? do_raw_spin_lock+0xd0/0x240 [ 396.903368] worker_thread+0x85/0xb60 [ 396.903373] ? __kthread_parkme+0x37/0x1c0 [ 396.903386] kthread+0x347/0x410 [ 396.903391] ? process_one_work+0x15a0/0x15a0 [ 396.903396] ? __kthread_cancel_work+0x170/0x170 [ 396.903403] ret_from_fork+0x24/0x30 [ 396.903445] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.903453] Bluetooth: hci5: failed to register connection device [ 396.935798] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.935807] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.935811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.935820] Workqueue: hci5 hci_rx_work [ 396.935824] Call Trace: [ 396.935835] dump_stack+0x17c/0x226 [ 396.935846] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.935855] sysfs_create_dir_ns+0x1c2/0x270 [ 396.935862] ? sysfs_create_mount_point+0x80/0x80 [ 396.935871] ? lock_downgrade+0x860/0x860 [ 396.935881] ? do_raw_spin_unlock+0x177/0x260 [ 396.935890] kobject_add_internal+0x257/0x8d0 [ 396.935900] kobject_add+0x10f/0x170 [ 396.935906] ? kobject_add_internal+0x8d0/0x8d0 [ 396.935911] ? __lockdep_init_map+0x105/0x590 [ 396.935919] ? get_device+0x20/0x20 [ 396.935923] ? lockdep_init_map+0x9/0x10 [ 396.935928] ? __raw_spin_lock_init+0x2d/0x100 [ 396.935939] device_add+0x33e/0x16b0 [ 396.935948] ? _dev_warn+0x100/0x100 [ 396.935955] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.935961] ? lock_downgrade+0x860/0x860 [ 396.935972] hci_conn_add_sysfs+0x8e/0x160 [ 396.935980] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.935991] hci_event_packet+0x1a08/0x68e0 [ 396.935997] ? mark_held_locks+0x130/0x130 [ 396.936004] ? __lock_acquire+0x764/0x47c0 [ 396.936013] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.936029] ? mark_held_locks+0xc7/0x130 [ 396.936037] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.936044] ? skb_dequeue+0x14d/0x1f0 [ 396.936050] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.936056] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.936062] ? trace_hardirqs_on+0x28/0x190 [ 396.936072] ? kasan_check_read+0x11/0x20 [ 396.936081] hci_rx_work+0x385/0xa70 [ 396.936093] process_one_work+0x7b9/0x15a0 [ 396.936105] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.936110] ? lock_acquire+0x180/0x3a0 [ 396.936116] ? kasan_check_write+0x14/0x20 [ 396.936122] ? do_raw_spin_lock+0xd0/0x240 [ 396.936131] worker_thread+0x85/0xb60 [ 396.936137] ? __kthread_parkme+0x37/0x1c0 [ 396.936150] kthread+0x347/0x410 [ 396.936154] ? process_one_work+0x15a0/0x15a0 [ 396.936159] ? __kthread_cancel_work+0x170/0x170 [ 396.936167] ret_from_fork+0x24/0x30 [ 396.936188] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.936197] Bluetooth: hci5: failed to register connection device [ 396.940115] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 396.940125] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 396.940128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 396.940143] Workqueue: hci5 hci_rx_work [ 396.940148] Call Trace: [ 396.940158] dump_stack+0x17c/0x226 [ 396.940169] sysfs_warn_dup.cold.0+0x17/0x26 [ 396.940179] sysfs_create_dir_ns+0x1c2/0x270 [ 396.940186] ? sysfs_create_mount_point+0x80/0x80 [ 396.940195] ? lock_downgrade+0x860/0x860 [ 396.940205] ? do_raw_spin_unlock+0x177/0x260 [ 396.940213] kobject_add_internal+0x257/0x8d0 [ 396.940223] kobject_add+0x10f/0x170 [ 396.940228] ? kobject_add_internal+0x8d0/0x8d0 [ 396.940233] ? __lockdep_init_map+0x105/0x590 [ 396.940240] ? get_device+0x20/0x20 [ 396.940244] ? lockdep_init_map+0x9/0x10 [ 396.940250] ? __raw_spin_lock_init+0x2d/0x100 [ 396.940258] device_add+0x33e/0x16b0 [ 396.940266] ? _dev_warn+0x100/0x100 [ 396.940273] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 396.940278] ? lock_downgrade+0x860/0x860 [ 396.940289] hci_conn_add_sysfs+0x8e/0x160 [ 396.940296] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 396.940306] hci_event_packet+0x1a08/0x68e0 [ 396.940313] ? mark_held_locks+0x130/0x130 [ 396.940319] ? __lock_acquire+0x764/0x47c0 [ 396.940328] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 396.940342] ? mark_held_locks+0xc7/0x130 [ 396.940356] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.940362] ? skb_dequeue+0x14d/0x1f0 [ 396.940367] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 396.940373] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 396.940380] ? trace_hardirqs_on+0x28/0x190 [ 396.940390] ? kasan_check_read+0x11/0x20 [ 396.940398] hci_rx_work+0x385/0xa70 [ 396.940410] process_one_work+0x7b9/0x15a0 [ 396.940420] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 396.940424] ? lock_acquire+0x180/0x3a0 [ 396.940430] ? kasan_check_write+0x14/0x20 [ 396.940435] ? do_raw_spin_lock+0xd0/0x240 [ 396.940444] worker_thread+0x85/0xb60 [ 396.940449] ? __kthread_parkme+0x37/0x1c0 [ 396.940461] kthread+0x347/0x410 [ 396.940466] ? process_one_work+0x15a0/0x15a0 [ 396.940470] ? __kthread_cancel_work+0x170/0x170 [ 396.940478] ret_from_fork+0x24/0x30 [ 396.940500] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 396.940509] Bluetooth: hci5: failed to register connection device [ 397.288960] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 397.288971] CPU: 0 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 397.288974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 397.288983] Workqueue: hci5 hci_rx_work [ 397.288988] Call Trace: [ 397.288998] dump_stack+0x17c/0x226 [ 397.289010] sysfs_warn_dup.cold.0+0x17/0x26 [ 397.289019] sysfs_create_dir_ns+0x1c2/0x270 [ 397.289025] ? sysfs_create_mount_point+0x80/0x80 [ 397.289034] ? lock_downgrade+0x860/0x860 [ 397.289043] ? do_raw_spin_unlock+0x177/0x260 [ 397.289052] kobject_add_internal+0x257/0x8d0 [ 397.289062] kobject_add+0x10f/0x170 [ 397.289068] ? kobject_add_internal+0x8d0/0x8d0 [ 397.289073] ? __lockdep_init_map+0x105/0x590 [ 397.289080] ? get_device+0x20/0x20 [ 397.289085] ? lockdep_init_map+0x9/0x10 [ 397.289090] ? __raw_spin_lock_init+0x2d/0x100 [ 397.289099] device_add+0x33e/0x16b0 [ 397.289108] ? _dev_warn+0x100/0x100 [ 397.289116] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 397.289121] ? lock_downgrade+0x860/0x860 [ 397.289132] hci_conn_add_sysfs+0x8e/0x160 [ 397.289140] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 397.289150] hci_event_packet+0x1a08/0x68e0 [ 397.289157] ? mark_held_locks+0x130/0x130 [ 397.289163] ? __lock_acquire+0x764/0x47c0 [ 397.289172] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 397.289226] ? mark_held_locks+0xc7/0x130 [ 397.289236] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 397.289244] ? skb_dequeue+0x14d/0x1f0 [ 397.289249] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 397.289255] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 397.289262] ? trace_hardirqs_on+0x28/0x190 [ 397.289273] ? kasan_check_read+0x11/0x20 [ 397.289281] hci_rx_work+0x385/0xa70 [ 397.289293] process_one_work+0x7b9/0x15a0 [ 397.289304] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 397.289308] ? lock_acquire+0x180/0x3a0 [ 397.289314] ? kasan_check_write+0x14/0x20 [ 397.289319] ? do_raw_spin_lock+0xd0/0x240 [ 397.289327] worker_thread+0x85/0xb60 [ 397.289333] ? __kthread_parkme+0x37/0x1c0 [ 397.289344] kthread+0x347/0x410 [ 397.289349] ? process_one_work+0x15a0/0x15a0 [ 397.289354] ? __kthread_cancel_work+0x170/0x170 [ 397.289361] ret_from_fork+0x24/0x30 [ 397.289382] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 397.289391] Bluetooth: hci5: failed to register connection device [ 397.294408] sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci5/hci5:0' [ 397.294418] CPU: 1 PID: 8586 Comm: kworker/u5:5 Not tainted 4.19.200-syzkaller #0 [ 397.294421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 397.294429] Workqueue: hci5 hci_rx_work [ 397.294433] Call Trace: [ 397.294443] dump_stack+0x17c/0x226 [ 397.294453] sysfs_warn_dup.cold.0+0x17/0x26 [ 397.294462] sysfs_create_dir_ns+0x1c2/0x270 [ 397.294469] ? sysfs_create_mount_point+0x80/0x80 [ 397.294480] ? lock_downgrade+0x860/0x860 [ 397.294492] ? do_raw_spin_unlock+0x177/0x260 [ 397.294503] kobject_add_internal+0x257/0x8d0 [ 397.294516] kobject_add+0x10f/0x170 [ 397.294523] ? kobject_add_internal+0x8d0/0x8d0 [ 397.294528] ? __lockdep_init_map+0x105/0x590 [ 397.294535] ? get_device+0x20/0x20 [ 397.294539] ? lockdep_init_map+0x9/0x10 [ 397.294544] ? __raw_spin_lock_init+0x2d/0x100 [ 397.294553] device_add+0x33e/0x16b0 [ 397.294561] ? _dev_warn+0x100/0x100 [ 397.294569] ? hci_sync_conn_complete_evt.isra.111+0x169/0xa50 [ 397.294574] ? lock_downgrade+0x860/0x860 [ 397.294584] hci_conn_add_sysfs+0x8e/0x160 [ 397.294591] hci_sync_conn_complete_evt.isra.111+0x8bc/0xa50 [ 397.294601] hci_event_packet+0x1a08/0x68e0 [ 397.294607] ? mark_held_locks+0x130/0x130 [ 397.294612] ? __lock_acquire+0x764/0x47c0 [ 397.294621] ? hci_loglink_complete_evt.isra.127+0x740/0x740 [ 397.294636] ? mark_held_locks+0xc7/0x130 [ 397.294645] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 397.294651] ? skb_dequeue+0x14d/0x1f0 [ 397.294657] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 397.294662] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 397.294668] ? trace_hardirqs_on+0x28/0x190 [ 397.294678] ? kasan_check_read+0x11/0x20 [ 397.294693] hci_rx_work+0x385/0xa70 [ 397.294703] process_one_work+0x7b9/0x15a0 [ 397.294712] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 397.294716] ? lock_acquire+0x180/0x3a0 [ 397.294723] ? kasan_check_write+0x14/0x20 [ 397.294728] ? do_raw_spin_lock+0xd0/0x240 [ 397.294737] worker_thread+0x85/0xb60 [ 397.294742] ? __kthread_parkme+0x37/0x1c0 [ 397.294753] kthread+0x347/0x410 [ 397.294758] ? process_one_work+0x15a0/0x15a0 [ 397.294762] ? __kthread_cancel_work+0x170/0x170 [ 397.294770] ret_from_fork+0x24/0x30 [ 397.294791] kobject_add_internal failed for hci5:0 with -EEXIST, don't try to register things with the same name in the same directory. [ 397.294799] Bluetooth: hci5: failed to register connection device [ 397.343321] kasan: CONFIG_KASAN_INLINE enabled [ 397.343335] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 397.343344] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 397.343350] CPU: 1 PID: 8485 Comm: syz-executor.5 Not tainted 4.19.200-syzkaller #0 [ 397.343353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 397.343361] RIP: 0010:klist_next+0x48/0x450 [ 397.343367] Code: 48 89 fb 48 83 ec 18 80 3c 02 00 0f 85 e1 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c 24 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b4 02 00 00 4c 8d 6b 08 4d 8b 7c 24 50 48 b8 00 [ 397.343369] RSP: 0018:ffff8880aa10f698 EFLAGS: 00010206 [ 397.343374] RAX: dffffc0000000000 RBX: ffff8880aa10f718 RCX: ffffffff813d1fc3 [ 397.343376] RDX: 000000000000000a RSI: ffff8880aa10f718 RDI: 0000000000000050 [ 397.343379] RBP: ffff8880aa10f6d8 R08: ffffed1015558835 R09: ffffed1015558834 [ 397.343382] R10: ffffed1015558834 R11: ffff8880aaac41a3 R12: 0000000000000000 [ 397.343385] R13: 0000000000000000 R14: ffffffff86d93f40 R15: dffffc0000000000 [ 397.343389] FS: 00000000021c0400(0000) GS:ffff8880ba300000(0000) knlGS:0000000000000000 [ 397.343391] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 397.343394] CR2: 0000000020000140 CR3: 00000000abb28000 CR4: 00000000001406e0 [ 397.343400] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 397.343403] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 397.343405] Call Trace: [ 397.343412] ? synchronize_rcu_expedited+0xb0/0xb0 [ 397.343420] ? bt_link_release+0x20/0x20 [ 397.343425] device_find_child+0xb1/0x170 [ 397.343429] ? device_for_each_child+0x140/0x140 [ 397.343436] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 397.343442] ? trace_hardirqs_on+0x28/0x190 [ 397.343446] ? bt_link_release+0x20/0x20 [ 397.343451] hci_conn_del_sysfs+0xaa/0x150 [ 397.343457] hci_conn_cleanup+0x1ff/0x4e0 [ 397.343463] hci_conn_del+0x22c/0x6b0 [ 397.343468] hci_conn_hash_flush+0x171/0x230 [ 397.343473] hci_dev_do_close+0x4bd/0xe10 [ 397.343481] ? lock_downgrade+0x860/0x860 [ 397.343485] ? hci_dev_open+0x200/0x200 [ 397.343490] ? kasan_check_write+0x14/0x20 [ 397.343497] hci_unregister_dev+0x167/0x890 [ 397.343504] vhci_release+0x6b/0xe0 [ 397.343510] __fput+0x249/0x7f0 [ 397.343516] ____fput+0x9/0x10 [ 397.343522] task_work_run+0x108/0x180 [ 397.343530] do_exit+0xa6a/0x2d90 [ 397.343535] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 397.343541] ? mm_update_next_owner+0x680/0x680 [ 397.343545] ? wait_for_completion_io+0x20/0x20 [ 397.343553] ? get_signal+0x2ba/0x1970 [ 397.343556] ? _raw_spin_unlock_irq+0x27/0x90 [ 397.343560] ? get_signal+0x2ba/0x1970 [ 397.343565] do_group_exit+0xf8/0x2c0 [ 397.343570] get_signal+0x30b/0x1970 [ 397.343575] ? __vfs_read+0x440/0x880 [ 397.343581] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 397.343590] do_signal+0x87/0x1870 [ 397.343597] ? setup_sigcontext+0x7d0/0x7d0 [ 397.343601] ? rw_verify_area+0xb8/0x2b0 [ 397.343607] ? vfs_read+0xff/0x300 [ 397.343612] ? ksys_read+0x103/0x260 [ 397.343616] ? exit_to_usermode_loop+0x3a/0x1e0 [ 397.343619] ? do_syscall_64+0x413/0x4e0 [ 397.343623] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 397.343626] ? exit_to_usermode_loop+0x3a/0x1e0 [ 397.343630] ? trace_hardirqs_on+0x28/0x190 [ 397.343634] exit_to_usermode_loop+0x159/0x1e0 [ 397.343639] do_syscall_64+0x413/0x4e0 [ 397.343644] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 397.343647] RIP: 0033:0x418d7c [ 397.343650] Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48 [ 397.343652] RSP: 002b:00007ffcdfeb6af0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 397.343657] RAX: fffffffffffffe00 RBX: 00007ffcdfeb6b90 RCX: 0000000000418d7c [ 397.343659] RDX: 0000000000000050 RSI: 0000000000568020 RDI: 00000000000000f9 [ 397.343661] RBP: 0000000000000003 R08: 0000000000000000 R09: 0079746972756365 [ 397.343663] R10: 00007ffcdfeb64b0 R11: 0000000000000246 R12: 0000000000000032 [ 397.343665] R13: 0000000000000000 R14: 0000000000000003 R15: 00007ffcdfeb6bd0 [ 397.343671] Modules linked in: [ 397.343691] ---[ end trace f462a5a11936f50d ]--- [ 397.343695] RIP: 0010:klist_next+0x48/0x450 [ 397.343699] Code: 48 89 fb 48 83 ec 18 80 3c 02 00 0f 85 e1 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d 7c 24 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b4 02 00 00 4c 8d 6b 08 4d 8b 7c 24 50 48 b8 00 [ 397.343701] RSP: 0018:ffff8880aa10f698 EFLAGS: 00010206 [ 397.343705] RAX: dffffc0000000000 RBX: ffff8880aa10f718 RCX: ffffffff813d1fc3 [ 397.343708] RDX: 000000000000000a RSI: ffff8880aa10f718 RDI: 0000000000000050 [ 397.343710] RBP: ffff8880aa10f6d8 R08: ffffed1015558835 R09: ffffed1015558834 [ 397.343713] R10: ffffed1015558834 R11: ffff8880aaac41a3 R12: 0000000000000000 [ 397.343716] R13: 0000000000000000 R14: ffffffff86d93f40 R15: dffffc0000000000 [ 397.343719] FS: 00000000021c0400(0000) GS:ffff8880ba300000(0000) knlGS:0000000000000000 [ 397.343722] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 397.343724] CR2: 0000000020000140 CR3: 00000000abb28000 CR4: 00000000001406e0 [ 397.343729] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 397.343731] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 397.343734] Kernel panic - not syncing: Fatal exception [ 397.345274] Kernel Offset: disabled [ 400.460094] Rebooting in 86400 seconds..