general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 1 PID: 27967 Comm: syz.8.5168 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x151/0x300 lib/klist.c:249
Code: c1 05 4d 89 f4 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 f7 e8 71 0d b9 fd 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 53 0d b9 fd 49 8b 47 58 48 89 44 24 08 4c
RSP: 0018:ffffc90002f7f660 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88802823bb80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90002f7f748 R08: ffffffff8c93b843 R09: 1ffffffff1927708
R10: dffffc0000000000 R11: fffffbfff1927709 R12: 1ffff1100bdb5f8c
R13: dffffc0000000000 R14: ffff88805edafc60 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd13ef9f540 CR3: 0000000059f53000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 device_move+0x18f/0x6f0 drivers/base/core.c:4338
 hci_conn_del_sysfs+0xab/0x160 net/bluetooth/hci_sysfs.c:73
 hci_conn_cleanup+0x4d1/0x680 net/bluetooth/hci_conn.c:140
 hci_conn_del+0x2ab/0x3e0 net/bluetooth/hci_conn.c:678
 hci_conn_hash_flush+0x185/0x220 net/bluetooth/hci_conn.c:1623
 hci_dev_do_close+0x991/0x1030 net/bluetooth/hci_core.c:1795
 hci_unregister_dev+0x2d7/0x580 net/bluetooth/hci_core.c:4044
 vhci_release+0x73/0xc0 drivers/bluetooth/hci_vhci.c:345
 __fput+0x234/0x930 fs/file_table.c:311
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0x626/0x20c0 kernel/exit.c:884
 do_group_exit+0x12e/0x300 kernel/exit.c:998
 get_signal+0x6d6/0x12d0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xe7/0x12c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fed19685e59
Code: Unable to access opcode bytes at RIP 0x7fed19685e2f.
RSP: 002b:00007fed178be028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 000000000003ffff RBX: 00007fed198ff090 RCX: 00007fed19685e59
RDX: 00000000080002c1 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007fed1971bd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fed198ff128 R14: 00007fed198ff090 R15: 00007ffe53d85c18
 </TASK>
Modules linked in:
---[ end trace 0c21a637b2a6a17f ]---
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x151/0x300 lib/klist.c:249
Code: c1 05 4d 89 f4 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 f7 e8 71 0d b9 fd 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 53 0d b9 fd 49 8b 47 58 48 89 44 24 08 4c
RSP: 0018:ffffc90002f7f660 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88802823bb80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90002f7f748 R08: ffffffff8c93b843 R09: 1ffffffff1927708
R10: dffffc0000000000 R11: fffffbfff1927709 R12: 1ffff1100bdb5f8c
R13: dffffc0000000000 R14: ffff88805edafc60 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f790dab8fe8 CR3: 0000000049cb6000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
   0:	c1 05 4d 89 f4 49 c1 	roll   $0xc1,0x49f4894d(%rip)        # 0x49f48954
   7:	ec                   	in     (%dx),%al
   8:	03 43 80             	add    -0x80(%rbx),%eax
   b:	3c 2c                	cmp    $0x2c,%al
   d:	00 74 08 4c          	add    %dh,0x4c(%rax,%rcx,1)
  11:	89 f7                	mov    %esi,%edi
  13:	e8 71 0d b9 fd       	call   0xfdb90d89
  18:	4d 8b 3e             	mov    (%r14),%r15
  1b:	49 83 e7 fe          	and    $0xfffffffffffffffe,%r15
  1f:	49 8d 7f 58          	lea    0x58(%r15),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 53 0d b9 fd       	call   0xfdb90d89
  36:	49 8b 47 58          	mov    0x58(%r15),%rax
  3a:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  3f:	4c                   	rex.WR