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: 6397 Comm: kbnepd bnep0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:klist_del+0x49/0x110
Code: f6 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 b9 8b b2 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 9b 8b b2 f6 4d 8b 7e 58 4c 89 f7 e8 5f 74
RSP: 0018:ffffc90004f77768 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff888023fb5460 RCX: ffff8880238e3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc90004f77890 R08: ffff88801fb51b43 R09: 1ffff11003f6a368
R10: dffffc0000000000 R11: ffffed1003f6a369 R12: dffffc0000000000
R13: 1ffff110047f6a8c R14: 0000000000000000 R15: ffff88803c636750
FS:  0000000000000000(0000) GS:ffff8880b8614000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000b038 CR3: 00000001061d4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 device_del+0x280/0x8e0
 unregister_netdevice_many_notify+0x1a6b/0x1ff0
 unregister_netdevice_queue+0x33c/0x380
 unregister_netdev+0x1f/0x60
 bnep_session+0x294d/0x2b40
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:klist_del+0x49/0x110
Code: f6 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 b9 8b b2 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 9b 8b b2 f6 4d 8b 7e 58 4c 89 f7 e8 5f 74
RSP: 0018:ffffc90004f77768 EFLAGS: 00010202
RAX: 000000000000000b RBX: ffff888023fb5460 RCX: ffff8880238e3980
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc90004f77890 R08: ffff88801fb51b43 R09: 1ffff11003f6a368
R10: dffffc0000000000 R11: ffffed1003f6a369 R12: dffffc0000000000
R13: 1ffff110047f6a8c R14: 0000000000000000 R15: ffff88803c636750
FS:  0000000000000000(0000) GS:ffff8880b8614000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000b038 CR3: 000000010c01c000 CR4: 00000000000006f0
