loop0: detected capacity change from 4096 to 2
syz.0.1: attempt to access beyond end of device
loop0: rw=0, sector=2568, nr_sectors = 4 limit=2
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: 1 PID: 4433 Comm: syz.0.1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : PagePoisoned include/linux/page-flags.h:304 [inline]
pc : PagePrivate include/linux/page-flags.h:511 [inline]
pc : ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:1328 [inline]
pc : ntfs_perform_write+0x60bc/0x6a20 fs/ntfs/file.c:1844
lr : ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:1348 [inline]
lr : ntfs_perform_write+0x6454/0x6a20 fs/ntfs/file.c:1844
sp : ffff800021467480
x29: ffff800021467890 x28: dfff800000000000 x27: ffff0000e01e4d98
x26: 0000000000000020 x25: 0000000000000001 x24: ffff0000e01e4d98
x23: 0000000000000000 x22: fffffc00039218e0 x21: 0000000000000000
x20: 0000000000000000 x19: 0000000000000001 x18: 0000000000000000
x17: ffff800018184000 x16: ffff8000082d2558 x15: ffff800017c65000
x14: ffff0000d6b2c218 x13: 1ffff00002a0a0b1 x12: 0000000000080000
x11: 000000000000885b x10: ffff800021b39000 x9 : ffff800009538bbc
x8 : 0000000000000000 x7 : ffff8000095358c4 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800009535988
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 PagePoisoned include/linux/page-flags.h:304 [inline]
 PagePrivate include/linux/page-flags.h:511 [inline]
 ntfs_prepare_pages_for_non_resident_write fs/ntfs/file.c:1328 [inline]
 ntfs_perform_write+0x60bc/0x6a20 fs/ntfs/file.c:1844
 ntfs_file_write_iter+0xf80/0x17e0 fs/ntfs/file.c:1917
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x530/0x91c fs/read_write.c:861
 vfs_writev fs/read_write.c:934 [inline]
 do_pwritev+0x1c8/0x2fc fs/read_write.c:1031
 __do_sys_pwritev2 fs/read_write.c:1090 [inline]
 __se_sys_pwritev2 fs/read_write.c:1081 [inline]
 __arm64_sys_pwritev2+0xd4/0x108 fs/read_write.c:1081
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 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: aa1503e0 97ce810d f94002b5 d343feb7 (387c6ae8) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1503e0 	mov	x0, x21
   4:	97ce810d 	bl	0xffffffffff3a0438
   8:	f94002b5 	ldr	x21, [x21]
   c:	d343feb7 	lsr	x23, x21, #3
* 10:	387c6ae8 	ldrb	w8, [x23, x28] <-- trapping instruction