Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 7425 Comm: kbnepd bnep0 Not tainted 6.17.0-rc1-syzkaller-00215-gbab3ce404553 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230
Code: f6 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 69 9e b3 f6 4c 8b 33 49 83 e6 fe 49 8d 7e 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 4b 9e b3 f6 4d 8b 7e 58 4c 89 f7 e8 5f 74
RSP: 0018:ffffc9001c037768 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88807ef8e860 RCX: ffff888078321e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc9001c037890 R08: ffff88807844e2d3 R09: 1ffff1100f089c5a
R10: dffffc0000000000 R11: ffffed100f089c5b R12: dffffc0000000000
R13: 1ffff1100fdf1d0c R14: 0000000000000000 R15: ffff88807b0da750
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc021ebc24 CR3: 00000000595d2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 device_del+0x280/0x8e0 drivers/base/core.c:3855
 unregister_netdevice_many_notify+0x1a6b/0x1ff0 net/core/dev.c:12189
 unregister_netdevice_many net/core/dev.c:12217 [inline]
 unregister_netdevice_queue+0x33c/0x380 net/core/dev.c:12061
 unregister_netdevice include/linux/netdevice.h:3385 [inline]
 unregister_netdev+0x1f/0x60 net/core/dev.c:12235
 bnep_session+0x294d/0x2b40 net/bluetooth/bnep/core.c:525
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 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: f6 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 69 9e b3 f6 4c 8b 33 49 83 e6 fe 49 8d 7e 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 4b 9e b3 f6 4d 8b 7e 58 4c 89 f7 e8 5f 74
RSP: 0018:ffffc9001c037768 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff88807ef8e860 RCX: ffff888078321e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc9001c037890 R08: ffff88807844e2d3 R09: 1ffff1100f089c5a
R10: dffffc0000000000 R11: ffffed100f089c5b R12: dffffc0000000000
R13: 1ffff1100fdf1d0c R14: 0000000000000000 R15: ffff88807b0da750
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc021ebc24 CR3: 00000000595d2000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	f6 49 89 dd          	testb  $0xdd,-0x77(%rcx)
   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:	48 89 df             	mov    %rbx,%rdi
  13:	e8 69 9e b3 f6       	call   0xf6b39e81
  18:	4c 8b 33             	mov    (%rbx),%r14
  1b:	49 83 e6 fe          	and    $0xfffffffffffffffe,%r14
  1f:	49 8d 7e 58          	lea    0x58(%r14),%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 4b 9e b3 f6       	call   0xf6b39e81
  36:	4d 8b 7e 58          	mov    0x58(%r14),%r15
  3a:	4c 89 f7             	mov    %r14,%rdi
  3d:	e8                   	.byte 0xe8
  3e:	5f                   	pop    %rdi
  3f:	74                   	.byte 0x74