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: 3641 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-00372-ga5088ee7251e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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:ffffc90003c2fa60 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffffc90003c2fad8 RCX: 0000000000000000
RDX: 000000000000000b RSI: ffffffff84216496 RDI: 0000000000000058
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8860f510 R14: 1ffff92000785f57 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ec24000 CR3: 000000003b9cc000 CR4: 0000000000350ee0
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_unregister_dev+0x17f/0x4e0 net/bluetooth/hci_core.c:2682
 vhci_release+0x7c/0xf0 drivers/bluetooth/hci_vhci.c:568
 __fput+0x277/0x9d0 fs/file_table.c:320
 task_work_run+0xdd/0x1a0 kernel/task_work.c:177
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xad5/0x29b0 kernel/exit.c:795
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 __do_sys_exit_group kernel/exit.c:936 [inline]
 __se_sys_exit_group kernel/exit.c:934 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934
 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: 0033:0x7feb29e8a5a9
Code: Unable to access opcode bytes at RIP 0x7feb29e8a57f.
RSP: 002b:00007ffdd7705c88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ffdd7705e30 RCX: 00007feb29e8a5a9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000043
RBP: 0000000000000000 R08: 0000000000000025 R09: 00007ffdd7705e30
R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb29ee5551
R13: 000000000000001c R14: 0000000000000003 R15: 00007ffdd7705e70
 </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:ffffc90003c2fa60 EFLAGS: 00010212
RAX: dffffc0000000000 RBX: ffffc90003c2fad8 RCX: 0000000000000000
RDX: 000000000000000b RSI: ffffffff84216496 RDI: 0000000000000058
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8860f510 R14: 1ffff92000785f57 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f224000 CR3: 000000003b9cc000 CR4: 0000000000350ef0
----------------
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