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:1621 [inline]
BUG: KASAN: wild-memory-access in l2cap_connect_cfm+0x530/0xe24 net/bluetooth/l2cap_core.c:7278
Read of size 4 at addr deacfffffffffc8c by task kworker/u9:5/6439

CPU: 1 UID: 0 PID: 6439 Comm: kworker/u9:5 Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci0 hci_rx_work
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 print_report+0xf8/0x538 mm/kasan/report.c:491
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189
 __kasan_check_read+0x20/0x30 mm/kasan/shadow.c:31
 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:1621 [inline]
 l2cap_connect_cfm+0x530/0xe24 net/bluetooth/l2cap_core.c:7278
 hci_connect_cfm+0xa0/0x13c include/net/bluetooth/hci_core.h:1960
 le_conn_complete_evt+0xa1c/0xf0c net/bluetooth/hci_event.c:5758
 hci_le_conn_complete_evt+0x114/0x404 net/bluetooth/hci_event.c:5784
 hci_le_meta_evt+0x2a4/0x478 net/bluetooth/hci_event.c:7132
 hci_event_func net/bluetooth/hci_event.c:7440 [inline]
 hci_event_packet+0x890/0x106c net/bluetooth/hci_event.c:7495
 hci_rx_work+0x324/0xaf0 net/bluetooth/hci_core.c:4031
 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3391
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
==================================================================
Unable to handle kernel paging request at virtual address fbd51fffffffff91
KASAN: maybe wild-memory-access in range [0xdeacfffffffffc88-0xdeacfffffffffc8f]
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[fbd51fffffffff91] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6439 Comm: kworker/u9:5 Tainted: G    B              6.12.0-rc7-syzkaller-g887407160d72 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: hci0 hci_rx_work
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
pc : atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
pc : l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline]
pc : l2cap_conn_ready net/bluetooth/l2cap_core.c:1621 [inline]
pc : l2cap_connect_cfm+0x534/0xe24 net/bluetooth/l2cap_core.c:7278
lr : instrument_atomic_read include/linux/instrumented.h:68 [inline]
lr : atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
lr : l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline]
lr : l2cap_conn_ready net/bluetooth/l2cap_core.c:1621 [inline]
lr : l2cap_connect_cfm+0x530/0xe24 net/bluetooth/l2cap_core.c:7278
sp : ffff8000a4d57560
x29: ffff8000a4d57600 x28: ffff0000c81a0000 x27: 1fffe0001d6e0603
x26: dfff800000000000 x25: ffff0000c81a04b0 x24: ffff0000eb70301a
x23: dead000000000100 x22: ffff0000eb7032c0 x21: 1fffe0001ab5c807
x20: ffff0000d5ae403b x19: deacfffffffffc8c x18: 1fffe000366cb476
x17: ffff80008f80d000 x16: ffff80008b4b2798 x15: 0000000000000001
x14: 1ffff000125a24e8 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000100000 x10: 0000000000022705 x9 : 0000000000000000
x8 : 1bd59fffffffff91 x7 : 1fffe000366cb477 x6 : ffff8000802c419c
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000801ea814
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] (P)
 atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline] (P)
 l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline] (P)
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1621 [inline] (P)
 l2cap_connect_cfm+0x534/0xe24 net/bluetooth/l2cap_core.c:7278 (P)
 instrument_atomic_read include/linux/instrumented.h:68 [inline] (L)
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] (L)
 l2cap_chan_lock include/net/bluetooth/l2cap.h:827 [inline] (L)
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1621 [inline] (L)
 l2cap_connect_cfm+0x530/0xe24 net/bluetooth/l2cap_core.c:7278 (L)
 hci_connect_cfm+0xa0/0x13c include/net/bluetooth/hci_core.h:1960
 le_conn_complete_evt+0xa1c/0xf0c net/bluetooth/hci_event.c:5758
 hci_le_conn_complete_evt+0x114/0x404 net/bluetooth/hci_event.c:5784
 hci_le_meta_evt+0x2a4/0x478 net/bluetooth/hci_event.c:7132
 hci_event_func net/bluetooth/hci_event.c:7440 [inline]
 hci_event_packet+0x890/0x106c net/bluetooth/hci_event.c:7495
 hci_rx_work+0x324/0xaf0 net/bluetooth/hci_core.c:4031
 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3391
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
Code: 52800081 aa1303e0 97627044 d343fe68 (38fa6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	52800081 	mov	w1, #0x4                   	// #4
   4:	aa1303e0 	mov	x0, x19
   8:	97627044 	bl	0xfffffffffd89c118
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	38fa6908 	ldrsb	w8, [x8, x26] <-- trapping instruction