nvmet: adding nsid 1 to subsystem testnqn
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 5935 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:strlen+0x29/0x70 lib/string.c:425
Code: da f3 0f 1e fa 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00
RSP: 0018:ffffc9000444f9c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888025c45a00
RDX: 0000000000000000 RSI: 0000000000008002 RDI: 0000000000000000
RBP: ffffc9000444faf8 R08: ffffffff8e8c7aef R09: 1ffffffff1d18f5d
R10: dffffc0000000000 R11: fffffbfff1d18f5e R12: 1ffff92000889f48
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffffffffffffffff
FS:  000055558642b500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d224008 CR3: 000000007ea95000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 __fortify_strlen include/linux/fortify-string.h:228 [inline]
 getname_kernel+0x28/0x2f0 fs/namei.c:226
 filp_open+0x88/0x1e0 fs/open.c:1383
 nvmet_file_ns_enable+0x74/0x330 drivers/nvme/target/io-cmd-file.c:41
 nvmet_ns_enable+0xf4/0x8c0 drivers/nvme/target/core.c:578
 nvmet_ns_enable_store+0xd8/0x170 drivers/nvme/target/configfs.c:549
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x312/0x400 fs/configfs/file.c:229
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fdbfa79e0d9
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:00007ffcd781b3c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fdbfaa25fa0 RCX: 00007fdbfa79e0d9
RDX: 0000000000000001 RSI: 0000200000000580 RDI: 0000000000000004
RBP: 00007fdbfa835024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdbfaa25fac R14: 00007fdbfaa25fa0 R15: 00007fdbfaa25fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strlen+0x29/0x70 lib/string.c:425
Code: da f3 0f 1e fa 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00
RSP: 0018:ffffc9000444f9c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888025c45a00
RDX: 0000000000000000 RSI: 0000000000008002 RDI: 0000000000000000
RBP: ffffc9000444faf8 R08: ffffffff8e8c7aef R09: 1ffffffff1d18f5d
R10: dffffc0000000000 R11: fffffbfff1d18f5e R12: 1ffff92000889f48
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffffffffffffffff
FS:  000055558642b500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdbfa670000 CR3: 000000007ea95000 CR4: 00000000003506e0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	f3 0f 1e fa          	endbr64
   4:	41 57                	push   %r15
   6:	41 56                	push   %r14
   8:	41 54                	push   %r12
   a:	53                   	push   %rbx
   b:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
  12:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  19:	fc ff df
  1c:	48 89 fb             	mov    %rdi,%rbx
  1f:	49 89 c7             	mov    %rax,%r15
  22:	48 89 d8             	mov    %rbx,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	75 11                	jne    0x43
  32:	48 ff c3             	inc    %rbx
  35:	49 8d 47 01          	lea    0x1(%r15),%rax
  39:	42 80 7c 3f 01 00    	cmpb   $0x0,0x1(%rdi,%r15,1)