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: 10748 Comm: syz.5.944 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del lib/klist.c:230 [inline]
RIP: 0010:klist_remove+0x169/0x3a0 lib/klist.c:249
Code: 80 3c 04 00 74 08 4c 89 f7 e8 b3 75 67 f7 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 8c 75 67 f7 49 8b 47 58 48 89 44 24 10 4c 89
RSP: 0018:ffffc90004c1f8c0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88802b70da00 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004c1f9b0 R08: ffffffff8e73ef83 R09: 1ffffffff1ce7df0
R10: dffffc0000000000 R11: fffffbfff1ce7df1 R12: 1ffff1100d60488c
R13: dffffc0000000000 R14: ffff88806b024460 R15: 0000000000000000
FS:  00007ff0afd2b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff5b3556b8 CR3: 000000005f2d8000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 device_move+0x18e/0x6f0 drivers/base/core.c:4671
 hci_conn_del_sysfs+0xaf/0x160 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline]
 hci_conn_del+0x8a5/0xc40 net/bluetooth/hci_conn.c:1156
 hci_conn_hash_flush+0x17d/0x220 net/bluetooth/hci_conn.c:2572
 hci_dev_close_sync+0x9a1/0x1130 net/bluetooth/hci_sync.c:5329
 hci_dev_do_close net/bluetooth/hci_core.c:523 [inline]
 hci_rfkill_set_block+0x11b/0x1e0 net/bluetooth/hci_core.c:925
 rfkill_set_block+0x1c1/0x3c0 net/rfkill/core.c:360
 rfkill_fop_write+0x457/0x560 net/rfkill/core.c:1318
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff0aed9de99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff0afd2b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff0af025fa0 RCX: 00007ff0aed9de99
RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007ff0aee33eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff0af026038 R14: 00007ff0af025fa0 R15: 00007ffd4e076138
 </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+0x169/0x3a0 lib/klist.c:249
Code: 80 3c 04 00 74 08 4c 89 f7 e8 b3 75 67 f7 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 8c 75 67 f7 49 8b 47 58 48 89 44 24 10 4c 89
RSP: 0018:ffffc90004c1f8c0 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88802b70da00 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058
RBP: ffffc90004c1f9b0 R08: ffffffff8e73ef83 R09: 1ffffffff1ce7df0
R10: dffffc0000000000 R11: fffffbfff1ce7df1 R12: 1ffff1100d60488c
R13: dffffc0000000000 R14: ffff88806b024460 R15: 0000000000000000
FS:  00007ff0afd2b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001ff000 CR3: 000000005f2d8000 CR4: 00000000003506e0
----------------
Code disassembly (best guess):
   0:	80 3c 04 00          	cmpb   $0x0,(%rsp,%rax,1)
   4:	74 08                	je     0xe
   6:	4c 89 f7             	mov    %r14,%rdi
   9:	e8 b3 75 67 f7       	call   0xf76775c1
   e:	4d 8b 3e             	mov    (%r14),%r15
  11:	49 83 e7 fe          	and    $0xfffffffffffffffe,%r15
  15:	49 8d 7f 58          	lea    0x58(%r15),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 05                	je     0x35
  30:	e8 8c 75 67 f7       	call   0xf76775c1
  35:	49 8b 47 58          	mov    0x58(%r15),%rax
  39:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89