Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 27963 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x14a/0x340 lib/klist.c:249
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 e9 54 e3 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 ca 54 e3 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90004e2f820 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88803f475ac0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004e2f920 R08: ffffffff8f84bec3 R09: 1ffffffff1f097d8
R10: dffffc0000000000 R11: fffffbfff1f097d9 R12: 0000000000000000
R13: 1ffff1100fc7e78c R14: ffff88807e3f3c60 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125d0f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f769d28c2fe CR3: 000000001afc8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 device_move+0x193/0x700 drivers/base/core.c:4615
 hci_conn_del_sysfs+0xb8/0x170 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline]
 hci_conn_del+0xc33/0x11b0 net/bluetooth/hci_conn.c:1210
 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2603
 hci_dev_close_sync+0xaef/0x1330 net/bluetooth/hci_sync.c:5303
 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]
 hci_unregister_dev+0x21a/0x510 net/bluetooth/hci_core.c:2715
 vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690
 __fput+0x449/0xa70 fs/file_table.c:468
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6b5/0x2300 kernel/exit.c:966
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107
 __do_sys_exit_group kernel/exit.c:1118 [inline]
 __se_sys_exit_group kernel/exit.c:1116 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1116
 x64_sys_call+0x21f7/0x2200 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcead18eec9
Code: Unable to access opcode bytes at 0x7fcead18ee9f.
RSP: 002b:00007ffd9ebaa578 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fcead18eec9
RDX: 00007fcead190dba RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000003 R08: 00007ffd9ebab557 R09: 0000000000000007
R10: 00000000000002d8 R11: 0000000000000246 R12: 00007fcead3b4e60
R13: 00007ffd9ebab13c R14: 0000000000000000 R15: 00007fcead3b7020
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x14a/0x340 lib/klist.c:249
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 e9 54 e3 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 ca 54 e3 f6 49 8b 44 24 58 48 89 44 24 08
RSP: 0018:ffffc90004e2f820 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88803f475ac0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004e2f920 R08: ffffffff8f84bec3 R09: 1ffffffff1f097d8
R10: dffffc0000000000 R11: fffffbfff1f097d9 R12: 0000000000000000
R13: 1ffff1100fc7e78c R14: ffff88807e3f3c60 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125e0f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c27b39f CR3: 0000000058e48000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	4d 89 f5             	mov    %r14,%r13
   3:	49 c1 ed 03          	shr    $0x3,%r13
   7:	43 80 7c 3d 00 00    	cmpb   $0x0,0x0(%r13,%r15,1)
   d:	74 08                	je     0x17
   f:	4c 89 f7             	mov    %r14,%rdi
  12:	e8 e9 54 e3 f6       	call   0xf6e35500
  17:	4d 8b 26             	mov    (%r14),%r12
  1a:	49 83 e4 fe          	and    $0xfffffffffffffffe,%r12
  1e:	49 8d 7c 24 58       	lea    0x58(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 ca 54 e3 f6       	call   0xf6e35500
  36:	49 8b 44 24 58       	mov    0x58(%r12),%rax
  3b:	48 89 44 24 08       	mov    %rax,0x8(%rsp)