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 = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4422 Comm: syz.3.4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : strlen+0x28/0x84 lib/string.c:502
lr : __fortify_strlen include/linux/fortify-string.h:196 [inline]
lr : getname_kernel+0x34/0x2bc fs/namei.c:225
sp : ffff8000210677e0
x29: ffff800021067800 x28: 1fffe000197d7a1e x27: 1fffe0001ec1e78b
x26: dfff800000000000 x25: 1fffe0001be9ff42 x24: dfff800000000000
x23: dfff800000000000 x22: ffff70000420cf10 x21: 0000000000020002
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800011b90080 x15: 000000000004ffff
x14: 0000000000000001 x13: 1ffff0000420cee8 x12: 0000000000000000
x11: 0000000000000000 x10: dfff800000000000 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80001865fb30 x4 : 0000000000000008 x3 : ffff8000082d44b4
x2 : 0000000000000000 x1 : 0000000000020002 x0 : 0000000000000000
Call trace:
 strlen+0x28/0x84 lib/string.c:502
 __fortify_strlen include/linux/fortify-string.h:196 [inline]
 getname_kernel+0x34/0x2bc fs/namei.c:225
 filp_open+0x8c/0x1cc fs/open.c:1281
 nvmet_file_ns_enable+0x88/0x2f8 drivers/nvme/target/io-cmd-file.c:41
 nvmet_ns_enable+0xe4/0x724 drivers/nvme/target/core.c:576
 nvmet_ns_enable_store+0xd4/0x170 drivers/nvme/target/configfs.c:548
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x260/0x338 fs/configfs/file.c:229
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
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