Oops: general protection fault, probably for non-canonical address 0xdffffc0000000013: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f]
CPU: 0 UID: 0 PID: 9036 Comm: kbnepd bnep0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del+0x4c/0x110 lib/klist.c:230
Code: dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 19 b4 0a f7 4c 8b 33 49 83 e6 fe 49 8d be 98 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 f8 b3 0a f7 4d 8b be 98 00 00 00 4c 89 f7
RSP: 0018:ffffc9000152f848 EFLAGS: 00010202
RAX: 0000000000000013 RBX: ffff88803afe94a0 RCX: ffff88801ef43e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000098
RBP: ffffc9000152f970 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100726ef2d R12: dffffc0000000000
R13: 1ffff110075fd294 R14: 0000000000000000 R15: ffff8880730fc940
FS:  0000000000000000(0000) GS:ffff888125ece000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe7b761fa4 CR3: 00000000380dc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 device_del+0x280/0x8f0 drivers/base/core.c:3938
 unregister_netdevice_many_notify+0x1bb1/0x2120 net/core/dev.c:12487
 unregister_netdevice_many net/core/dev.c:12515 [inline]
 unregister_netdevice_queue net/core/dev.c:12327 [inline]
 unregister_netdevice include/linux/netdevice.h:3468 [inline]
 unregister_netdev+0x155/0x1f0 net/core/dev.c:12533
 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+0x4c/0x110 lib/klist.c:230
Code: dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 19 b4 0a f7 4c 8b 33 49 83 e6 fe 49 8d be 98 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 f8 b3 0a f7 4d 8b be 98 00 00 00 4c 89 f7
RSP: 0018:ffffc9000152f848 EFLAGS: 00010202
RAX: 0000000000000013 RBX: ffff88803afe94a0 RCX: ffff88801ef43e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000098
RBP: ffffc9000152f970 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100726ef2d R12: dffffc0000000000
R13: 1ffff110075fd294 R14: 0000000000000000 R15: ffff8880730fc940
FS:  0000000000000000(0000) GS:ffff888125ece000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe7b761fa4 CR3: 00000000380dc000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	dd 49 c1             	fisttpll -0x3f(%rcx)
   3:	ed                   	in     (%dx),%eax
   4:	03 43 80             	add    -0x80(%rbx),%eax
   7:	7c 25                	jl     0x2e
   9:	00 00                	add    %al,(%rax)
   b:	74 08                	je     0x15
   d:	48 89 df             	mov    %rbx,%rdi
  10:	e8 19 b4 0a f7       	call   0xf70ab42e
  15:	4c 8b 33             	mov    (%rbx),%r14
  18:	49 83 e6 fe          	and    $0xfffffffffffffffe,%r14
  1c:	49 8d be 98 00 00 00 	lea    0x98(%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 f8 b3 0a f7       	call   0xf70ab42e
  36:	4d 8b be 98 00 00 00 	mov    0x98(%r14),%r15
  3d:	4c 89 f7             	mov    %r14,%rdi