ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
kobject: kobject_add_internal failed for hci0:201 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
==================================================================
BUG: KASAN: wild-memory-access in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: wild-memory-access in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: wild-memory-access in l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline]
BUG: KASAN: wild-memory-access in l2cap_conn_ready net/bluetooth/l2cap_core.c:1625 [inline]
BUG: KASAN: wild-memory-access in l2cap_connect_cfm+0x656/0x1040 net/bluetooth/l2cap_core.c:7304
Read of size 4 at addr deacfffffffffc0c by task kworker/u9:3/11128

CPU: 1 UID: 0 PID: 11128 Comm: kworker/u9:3 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline]
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1625 [inline]
 l2cap_connect_cfm+0x656/0x1040 net/bluetooth/l2cap_core.c:7304
 hci_connect_cfm+0x92/0x140 include/net/bluetooth/hci_core.h:2082
 le_conn_complete_evt+0xcd3/0x1220 net/bluetooth/hci_event.c:5771
 hci_le_conn_complete_evt+0x187/0x450 net/bluetooth/hci_event.c:5797
 hci_event_func net/bluetooth/hci_event.c:7542 [inline]
 hci_event_packet+0x78f/0x1200 net/bluetooth/hci_event.c:7599
 hci_rx_work+0x46a/0xe80 net/bluetooth/hci_core.c:4071
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
==================================================================