kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
------------[ cut here ]------------
WARNING: net/bluetooth/hci_conn.c:641 at hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:641, CPU#1: kworker/u9:1/4731
Modules linked in:
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_conn_timeout
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:641
lr : hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:641
sp : ffff8000985b7b40
x29: ffff8000985b7b40 x28: ffff0000ebc49800 x27: ffff0000d208ca50
x26: dfff800000000000 x25: ffff0000da780000 x24: ffff0000ebc49808
x23: ffff0000cdf7f968 x22: dfff800000000000 x21: 00000000ffffffff
x20: ffff0000d208ca50 x19: ffff0000d208c000 x18: 00000000ffffffff
x17: 0000000000000003 x16: ffff800088b97000 x15: ffff80008a849000
x14: ffff80008b0812b0 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: ffff60001a411803 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80008a8682f8 x4 : 0000000000000008 x3 : ffff800085bd1094
x2 : 00000000ffffffff x1 : ffff0000da780000 x0 : 0000000000000000
Call trace:
 hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:641 (P)
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 2090
hardirqs last  enabled at (2089): [<ffff8000869bc5e4>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:219 [inline]
hardirqs last  enabled at (2089): [<ffff8000869bc5e4>] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:229
hardirqs last disabled at (2090): [<ffff800086996d7c>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (2008): [<ffff800084c7e76c>] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698
softirqs last disabled at (2006): [<ffff800084c7e754>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (2006): [<ffff800084c7e754>] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:697
---[ end trace 0000000000000000 ]---
Bluetooth: hci0: command 0x040f tx timeout
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
Bluetooth: hci0: command 0x040f tx timeout
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
Bluetooth: hci0: command 0x040f tx timeout
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
Bluetooth: hci0: command 0x040f tx timeout
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 1 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
Bluetooth: hci0: command 0x040f tx timeout
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0'
CPU: 0 UID: 0 PID: 4731 Comm: kworker/u9:1 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30
 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63
 create_dir lib/kobject.c:73 [inline]
 kobject_add_internal+0x290/0x6f0 lib/kobject.c:240
 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374
 kobject_add+0x110/0x1c8 lib/kobject.c:426
 device_add+0x394/0x9e0 drivers/base/core.c:3699
 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61
 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892
 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948
 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612
 hci_event_func net/bluetooth/hci_event.c:7884 [inline]
 hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938
 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4053
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device