Bluetooth: hci3: Opcode 0x0c1a failed: -4
Bluetooth: hci3: Error when powering off device on rfkill (-4)
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 15326 Comm: syz.1.2235 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:klist_put+0x4d/0x1d0 lib/klist.c:212
Code: c1 ea 03 80 3c 02 00 0f 85 74 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 83 e4 fe 49 8d 7c 24 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 43 01 00 00 4c 89 e7 4d 8b 74 24 58 e8 dc 09 0d
RSP: 0018:ffffc9000ec978d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880586df860 RCX: ffffc90005351000
RDX: 000000000000000b RSI: ffffffff8b855295 RDI: 0000000000000058
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff2178e9c
R10: ffffffff90bc74e3 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffffffff90bc74a0 R15: dffffc0000000000
FS:  00007fbfa3d806c0(0000) GS:ffff888124347000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc935e82368 CR3: 000000005a1f8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 klist_del lib/klist.c:230 [inline]
 klist_remove+0x14c/0x2e0 lib/klist.c:249
 device_move+0x12d/0x1140 drivers/base/core.c:4615
 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:2645
 hci_dev_close_sync+0x5a7/0x1240 net/bluetooth/hci_sync.c:5358
 hci_dev_do_close+0x2e/0xb0 net/bluetooth/hci_core.c:502
 hci_rfkill_set_block+0x225/0x3a0 net/bluetooth/hci_core.c:930
 rfkill_set_block+0x205/0x510 net/rfkill/core.c:346
 rfkill_fop_write+0x2c0/0x580 net/rfkill/core.c:1301
 vfs_write+0x2aa/0x1070 fs/read_write.c:686
 ksys_write+0x1f8/0x250 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbfa2f9c799
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:00007fbfa3d80028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fbfa3215fa0 RCX: 00007fbfa2f9c799
RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000006
RBP: 00007fbfa3032bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbfa3216038 R14: 00007fbfa3215fa0 R15: 00007fff5f6bce18
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_put+0x4d/0x1d0 lib/klist.c:212
Code: c1 ea 03 80 3c 02 00 0f 85 74 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 83 e4 fe 49 8d 7c 24 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 43 01 00 00 4c 89 e7 4d 8b 74 24 58 e8 dc 09 0d
RSP: 0018:ffffc9000ec978d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880586df860 RCX: ffffc90005351000
RDX: 000000000000000b RSI: ffffffff8b855295 RDI: 0000000000000058
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff2178e9c
R10: ffffffff90bc74e3 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000001 R14: ffffffff90bc74a0 R15: dffffc0000000000
FS:  00007fbfa3d806c0(0000) GS:ffff888124347000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b308eeb300 CR3: 000000005a1f8000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	c1 ea 03             	shr    $0x3,%edx
   3:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   7:	0f 85 74 01 00 00    	jne    0x181
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df
  17:	4c 8b 23             	mov    (%rbx),%r12
  1a:	49 83 e4 fe          	and    $0xfffffffffffffffe,%r12
  1e:	49 8d 7c 24 58       	lea    0x58(%r12),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 43 01 00 00    	jne    0x177
  34:	4c 89 e7             	mov    %r12,%rdi
  37:	4d 8b 74 24 58       	mov    0x58(%r12),%r14
  3c:	e8                   	.byte 0xe8
  3d:	dc 09                	fmull  (%rcx)
  3f:	0d                   	.byte 0xd