Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 UID: 0 PID: 7594 Comm: syz.0.391 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:kernfs_rename_ns+0x3b/0xa70 fs/kernfs/dir.c:1752
Code: 48 89 fb 4c 8d 73 30 48 83 ec 28 48 89 14 24 48 89 4c 24 08 e8 86 8c 4f ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 16 09 00 00 48 8b 43 30 48 85 c0 0f 84 ca 08 00
RSP: 0018:ffffc90004487768 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff82b96b1a RDI: 0000000000000000
RBP: ffff888020aa7000 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: ffffffff8b914418 R12: ffff888057075dc0
R13: ffff88803646ec00 R14: 0000000000000030 R15: 1ffff92000890ef9
FS:  0000000000000000(0000) GS:ffff888124339000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7aa29e9f00 CR3: 000000005f272000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kobject_move+0x127/0x260 lib/kobject.c:569
 device_move+0xa9/0x1140 drivers/base/core.c:4608
 hci_conn_del_sysfs+0x86/0x1a0 net/bluetooth/hci_sysfs.c:75
 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline]
 hci_conn_del+0x506/0x1180 net/bluetooth/hci_conn.c:1240
 hci_conn_hash_flush+0x186/0x280 net/bluetooth/hci_conn.c:2651
 hci_dev_close_sync+0x5a7/0x1240 net/bluetooth/hci_sync.c:5368
 hci_dev_do_close+0x2e/0xb0 net/bluetooth/hci_core.c:502
 hci_unregister_dev+0x227/0x670 net/bluetooth/hci_core.c:2716
 vhci_release+0x17d/0x230 drivers/bluetooth/hci_vhci.c:690
 __fput+0x3ff/0xb40 fs/file_table.c:469
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x8b8/0x2b60 kernel/exit.c:976
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1118
 get_signal+0x1ec7/0x21e0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x91/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
 irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
 irqentry_exit+0x1f8/0x670 kernel/entry/common.c:219
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fbe98d9c821
Code: Unable to access opcode bytes at 0x7fbe98d9c7f7.
RSP: 002b:fffffffffffffe70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fbe99016090 RCX: 00007fbe98d9c819
RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000
RBP: 00007fbe98e32c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fbe99016128 R14: 00007fbe99016090 R15: 00007fff7097c998
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kernfs_rename_ns+0x3b/0xa70 fs/kernfs/dir.c:1752
Code: 48 89 fb 4c 8d 73 30 48 83 ec 28 48 89 14 24 48 89 4c 24 08 e8 86 8c 4f ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 16 09 00 00 48 8b 43 30 48 85 c0 0f 84 ca 08 00
RSP: 0018:ffffc90004487768 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff82b96b1a RDI: 0000000000000000
RBP: ffff888020aa7000 R08: 0000000000000007 R09: 0000000000000000
R10: 000000007fffffff R11: ffffffff8b914418 R12: ffff888057075dc0
R13: ffff88803646ec00 R14: 0000000000000030 R15: 1ffff92000890ef9
FS:  0000000000000000(0000) GS:ffff888124339000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055634bc5e300 CR3: 0000000050813000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	48 89 fb             	mov    %rdi,%rbx
   3:	4c 8d 73 30          	lea    0x30(%rbx),%r14
   7:	48 83 ec 28          	sub    $0x28,%rsp
   b:	48 89 14 24          	mov    %rdx,(%rsp)
   f:	48 89 4c 24 08       	mov    %rcx,0x8(%rsp)
  14:	e8 86 8c 4f ff       	call   0xff4f8c9f
  19:	4c 89 f2             	mov    %r14,%rdx
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 16 09 00 00    	jne    0x94a
  34:	48 8b 43 30          	mov    0x30(%rbx),%rax
  38:	48 85 c0             	test   %rax,%rax
  3b:	0f                   	.byte 0xf
  3c:	84 ca                	test   %cl,%dl
  3e:	08 00                	or     %al,(%rax)