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: 11118 Comm: kbnepd bnep0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230
Code: f5 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 c9 34 6d 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 ab 34 6d f6 4d 8b 7e 58 4c 89 f7 e8 2f 46
RSP: 0018:ffffc90003ba7848 EFLAGS: 00010212
RAX: 000000000000000b RBX: ffff88805645e860 RCX: ffff8880328dbe00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc90003ba7970 R08: ffff888056316d23 R09: 1ffff1100ac62da4
R10: dffffc0000000000 R11: ffffed100ac62da5 R12: dffffc0000000000
R13: 1ffff1100ac8bd0c R14: 0000000000000000 R15: ffff888022fb6888
FS:  0000000000000000(0000) GS:ffff888124f4e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f547066627a CR3: 0000000074d5c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 device_del+0x27f/0x8f0 drivers/base/core.c:3938
 unregister_netdevice_many_notify+0x1be4/0x2150 net/core/dev.c:12479
 unregister_netdevice_many net/core/dev.c:12507 [inline]
 unregister_netdevice_queue net/core/dev.c:12319 [inline]
 unregister_netdevice include/linux/netdevice.h:3472 [inline]
 unregister_netdev+0x155/0x1f0 net/core/dev.c:12525
 bnep_session+0x2af2/0x2d20 net/bluetooth/bnep/core.c:544
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 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 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 c9 34 6d 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 ab 34 6d f6 4d 8b 7e 58 4c 89 f7 e8 2f 46
RSP: 0018:ffffc90003ba7848 EFLAGS: 00010212
RAX: 000000000000000b RBX: ffff88805645e860 RCX: ffff8880328dbe00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc90003ba7970 R08: ffff888056316d23 R09: 1ffff1100ac62da4
R10: dffffc0000000000 R11: ffffed100ac62da5 R12: dffffc0000000000
R13: 1ffff1100ac8bd0c R14: 0000000000000000 R15: ffff888022fb6888
FS:  0000000000000000(0000) GS:ffff888124f4e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ee17ff8 CR3: 000000002bd82000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	f5                   	cmc
   1:	49 89 dd             	mov    %rbx,%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:	48 89 df             	mov    %rbx,%rdi
  13:	e8 c9 34 6d f6       	call   0xf66d34e1
  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 ab 34 6d f6       	call   0xf66d34e1
  36:	4d 8b 7e 58          	mov    0x58(%r14),%r15
  3a:	4c 89 f7             	mov    %r14,%rdi
  3d:	e8                   	.byte 0xe8
  3e:	2f                   	(bad)
  3f:	46                   	rex.RX