loop4: detected capacity change from 0 to 4096
nvmet: adding nsid 1 to subsystem testsubsys
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 7663 Comm: syz.4.401 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:strlen+0x29/0x70
Code: 90 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:ffffc90003adf978 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90026746000 RSI: 000000000000004e RDI: 0000000000000000
RBP: ffffc90003adfab8 R08: ffffffff90573337 R09: 1ffffffff20ae666
R10: dffffc0000000000 R11: fffffbfff20ae667 R12: 1ffff9200075bf40
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffffffffffffffff
FS:  00007fc9d1eef6c0(0000) GS:ffff88818d956000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000040c0 CR3: 000000011e046000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 do_getname_kernel+0x1d/0x230
 filp_open+0x87/0x1d0
 nvmet_file_ns_enable+0x74/0x350
 nvmet_ns_enable+0xaa/0x780
 nvmet_ns_enable_store+0xd7/0x170
 configfs_write_iter+0x337/0x430
 vfs_write+0x612/0xba0
 ksys_write+0x150/0x270
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc9d0f9e0d9
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:00007fc9d1eef028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc9d1225fa0 RCX: 00007fc9d0f9e0d9
RDX: 0000000000000002 RSI: 00002000000004c0 RDI: 0000000000000005
RBP: 00007fc9d1035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc9d1226038 R14: 00007fc9d1225fa0 R15: 00007ffc296f6a78
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strlen+0x29/0x70
Code: 90 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:ffffc90003adf978 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90026746000 RSI: 000000000000004e RDI: 0000000000000000
RBP: ffffc90003adfab8 R08: ffffffff90573337 R09: 1ffffffff20ae666
R10: dffffc0000000000 R11: fffffbfff20ae667 R12: 1ffff9200075bf40
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffffffffffffffff
FS:  00007fc9d1eef6c0(0000) GS:ffff88818d956000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe7c3ed158 CR3: 000000011e046000 CR4: 00000000000006f0
