nvmet: 
nvmet: adding nsid 1 to subsystem testnqn
Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 4923 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : strlen+0x28/0x84 lib/string.c:402
lr : __fortify_strlen include/linux/fortify-string.h:218 [inline]
lr : do_getname_kernel+0x2c/0x1f4 fs/namei.c:260
sp : ffff8000987f7860
x29: ffff8000987f7880 x28: ffff0000cd5f7cc0 x27: ffff800082866c7c
x26: ffff0000dd5db200 x25: 1fffe00019abef82 x24: dfff800000000000
x23: 1fffe0001b7d880e x22: 00000000fffffff1 x21: 0000000000000000
x20: 0000000000000000 x19: 0000000000000000 x18: 00000000ffffffff
x17: ffff80008a7d6000 x16: 0000000000000005 x15: ffff80008a35fda0
x14: ffff80008a5d5e28 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: dfff800000000000 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80008a998248 x4 : 0000000000000008 x3 : ffff80008285a8a4
x2 : 0000000000000000 x1 : ffff0000ccdc8000 x0 : 0000000000000000
Call trace:
 strlen+0x28/0x84 lib/string.c:402 (P)
 __fortify_strlen include/linux/fortify-string.h:218 [inline]
 do_getname_kernel+0x2c/0x1f4 fs/namei.c:260
 getname_kernel+0x24/0x34 fs/namei.c:289
 class_filename_kernel_constructor include/linux/fs.h:2565 [inline]
 filp_open+0x2c/0x60 fs/open.c:1342
 nvmet_file_ns_enable+0x88/0x30c drivers/nvme/target/io-cmd-file.c:41
 nvmet_ns_enable+0xac/0x4f0 drivers/nvme/target/core.c:596
 nvmet_ns_enable_store+0xd4/0x170 drivers/nvme/target/configfs.c:735
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x27c/0x354 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x51c/0xa0c fs/read_write.c:687
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Code: aa0003e8 f2fbffea d343fd0b 1200090c (38ea696b) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa0003e8 	mov	x8, x0
   4:	f2fbffea 	movk	x10, #0xdfff, lsl #48
   8:	d343fd0b 	lsr	x11, x8, #3
   c:	1200090c 	and	w12, w8, #0x7
* 10:	38ea696b 	ldrsb	w11, [x11, x10] <-- trapping instruction