Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 2 UID: 0 PID: 9427 Comm: syz.5.887 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:strlen+0x1e/0xa0 lib/string.c:402
Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 fd 53 48 c1 ea 03 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 50 80 7d 00 00
RSP: 0018:ffffc900033afb40 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007051000
RDX: 0000000000000000 RSI: ffffffff82920eee RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88803486e810 R15: ffff88805c438800
FS:  00007f526e8186c0(0000) GS:ffff8880d5fec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c41066a CR3: 00000000412cc000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __fortify_strlen include/linux/fortify-string.h:218 [inline]
 do_getname_kernel+0x26/0x250 fs/namei.c:260
 class_filename_kernel_constructor include/linux/fs.h:2565 [inline]
 filp_open+0x1d/0x50 fs/open.c:1342
 nvmet_file_ns_enable+0x95/0x420 drivers/nvme/target/io-cmd-file.c:41
 nvmet_ns_enable+0x35f/0x5d0 drivers/nvme/target/core.c:596
 nvmet_ns_enable_store+0x11e/0x160 drivers/nvme/target/configfs.c:735
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x302/0x4e0 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6ac/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f526d99e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f526e818028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f526dc25fa0 RCX: 00007f526d99e0d9
RDX: 0000000000000001 RSI: 0000200000000900 RDI: 0000000000000005
RBP: 00007f526da35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f526dc26038 R14: 00007f526dc25fa0 R15: 00007ffc0a7cb068
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strlen+0x1e/0xa0 lib/string.c:402
Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 fd 53 48 c1 ea 03 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 50 80 7d 00 00
RSP: 0018:ffffc900033afb40 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007051000
RDX: 0000000000000000 RSI: ffffffff82920eee RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88803486e810 R15: ffff88805c438800
FS:  00007f526e8186c0(0000) GS:ffff8880d5fec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c41066a CR3: 00000000412cc000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	f3 0f 1e fa          	endbr64
  10:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  17:	fc ff df
  1a:	55                   	push   %rbp
  1b:	48 89 fa             	mov    %rdi,%rdx
  1e:	48 89 fd             	mov    %rdi,%rbp
  21:	53                   	push   %rbx
  22:	48 c1 ea 03          	shr    $0x3,%rdx
  26:	48 83 ec 08          	sub    $0x8,%rsp
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	48 89 fa             	mov    %rdi,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 04                	jg     0x3c
  38:	84 c0                	test   %al,%al
  3a:	75 50                	jne    0x8c
  3c:	80 7d 00 00          	cmpb   $0x0,0x0(%rbp)