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: 19759 Comm: syz-executor.2 Not tainted 6.0.0-rc6-syzkaller-00045-gdc164f4fb00a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
RIP: 0010:klist_next+0x49/0x510 lib/klist.c:377
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 2e 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 2b 48 8d 7d 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 33 04 00 00 4c 8d 6b 08 4c 8b 7d 58 48 b8 00 00
RSP: 0018:ffffc900151bf9a8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc900151bfa20 RCX: ffffc9000e892000
RDX: 000000000000000b RSI: ffffffff84214a16 RDI: 0000000000000058
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8860c4c0 R14: 1ffff92002a37f40 R15: dffffc0000000000
FS:  00007fe15d843700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8bc4e9f390 CR3: 000000007980a000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 next_device drivers/base/core.c:3756 [inline]
 device_find_child+0xba/0x190 drivers/base/core.c:3899
 hci_conn_del_sysfs+0xc7/0x180 net/bluetooth/hci_sysfs.c:71
 hci_conn_cleanup+0x315/0x7b0 net/bluetooth/hci_conn.c:147
 hci_conn_del+0x29b/0x790 net/bluetooth/hci_conn.c:1022
 hci_conn_hash_flush+0x197/0x260 net/bluetooth/hci_conn.c:2367
 hci_dev_close_sync+0x55d/0x1130 net/bluetooth/hci_sync.c:4476
 hci_dev_do_close+0x2d/0x70 net/bluetooth/hci_core.c:554
 hci_rfkill_set_block+0x15d/0x1c0 net/bluetooth/hci_core.c:947
 rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:345
 rfkill_fop_write+0x2c3/0x570 net/rfkill/core.c:1286
 vfs_write+0x2d7/0xdd0 fs/read_write.c:576
 ksys_write+0x1e8/0x250 fs/read_write.c:631
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe15c68a669
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe15d843168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe15c7abf80 RCX: 00007fe15c68a669
RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007fe15c6e5560 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe15ccdfb1f R14: 00007fe15d843300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_next+0x49/0x510 lib/klist.c:377
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 2e 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 2b 48 8d 7d 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 33 04 00 00 4c 8d 6b 08 4c 8b 7d 58 48 b8 00 00
RSP: 0018:ffffc900151bf9a8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc900151bfa20 RCX: ffffc9000e892000
RDX: 000000000000000b RSI: ffffffff84214a16 RDI: 0000000000000058
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8860c4c0 R14: 1ffff92002a37f40 R15: dffffc0000000000
FS:  00007fe15d843700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00f74a600 CR3: 000000007980a000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 2e 04 00 00    	jne    0x43c
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	48 8b 2b             	mov    (%rbx),%rbp
  1b:	48 8d 7d 58          	lea    0x58(%rbp),%rdi
  1f:	48 89 fa             	mov    %rdi,%rdx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
* 26:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2a:	0f 85 33 04 00 00    	jne    0x463
  30:	4c 8d 6b 08          	lea    0x8(%rbx),%r13
  34:	4c 8b 7d 58          	mov    0x58(%rbp),%r15
  38:	48                   	rex.W
  39:	b8                   	.byte 0xb8