Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 1 UID: 0 PID: 8574 Comm: kbnepd bnep0 Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230
Code: f5 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 f7 e8 59 c1 15 f6 49 8b 1e 48 83 e3 fe 48 8d 7b 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 3b c1 15 f6 4c 8b 7b 58 48 89 df e8 df 41
RSP: 0018:ffffc9000af87768 EFLAGS: 00010202
RAX: 000000000000000b RBX: 0000000000000000 RCX: ffff888035deda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc9000af87890 R08: ffffffff826a2b7a R09: 1ffff11008df001e
R10: dffffc0000000000 R11: ffffed1008df001f R12: dffffc0000000000
R13: 1ffff1100fac128c R14: ffff88807d609460 R15: ffff88805f194be8
FS:  0000000000000000(0000) GS:ffff88812510f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c36db86 CR3: 0000000034dd0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 device_del+0x2cb/0x9b0 drivers/base/core.c:3832
 unregister_netdevice_many_notify+0x1f37/0x2510 net/core/dev.c:12009
 unregister_netdevice_many net/core/dev.c:12037 [inline]
 unregister_netdevice_queue+0x383/0x400 net/core/dev.c:11889
 unregister_netdevice include/linux/netdevice.h:3374 [inline]
 unregister_netdev+0x1f/0x60 net/core/dev.c:12055
 bnep_session+0x2e52/0x3050 net/bluetooth/bnep/core.c:525
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230
Code: f5 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 f7 e8 59 c1 15 f6 49 8b 1e 48 83 e3 fe 48 8d 7b 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 3b c1 15 f6 4c 8b 7b 58 48 89 df e8 df 41
RSP: 0018:ffffc9000af87768 EFLAGS: 00010202
RAX: 000000000000000b RBX: 0000000000000000 RCX: ffff888035deda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc9000af87890 R08: ffffffff826a2b7a R09: 1ffff11008df001e
R10: dffffc0000000000 R11: ffffed1008df001f R12: dffffc0000000000
R13: 1ffff1100fac128c R14: ffff88807d609460 R15: ffff88805f194be8
FS:  0000000000000000(0000) GS:ffff88812500f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff42d7f1f98 CR3: 000000000eb38000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	f5                   	cmc
   1:	4d 89 f5             	mov    %r14,%r13
   4:	49 c1 ed 03          	shr    $0x3,%r13
   8:	43 80 7c 25 00 00    	cmpb   $0x0,0x0(%r13,%r12,1)
   e:	74 08                	je     0x18
  10:	4c 89 f7             	mov    %r14,%rdi
  13:	e8 59 c1 15 f6       	call   0xf615c171
  18:	49 8b 1e             	mov    (%r14),%rbx
  1b:	48 83 e3 fe          	and    $0xfffffffffffffffe,%rbx
  1f:	48 8d 7b 58          	lea    0x58(%rbx),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 3b c1 15 f6       	call   0xf615c171
  36:	4c 8b 7b 58          	mov    0x58(%rbx),%r15
  3a:	48 89 df             	mov    %rbx,%rdi
  3d:	e8                   	.byte 0xe8
  3e:	df                   	.byte 0xdf
  3f:	41                   	rex.B