loop2: detected capacity change from 0 to 4096
ntfs3(loop2): ino=1a, mi_enum_attr
ntfs3(loop2): Mark volume as dirty due to NTFS errors
=====================================================
BUG: KMSAN: uninit-value in longest_match_std+0x626/0xee0 fs/ntfs3/lznt.c:60
 longest_match_std+0x626/0xee0 fs/ntfs3/lznt.c:60
 compress_chunk fs/ntfs3/lznt.c:170 [inline]
 compress_lznt+0x4a0/0xe90 fs/ntfs3/lznt.c:339
 ni_write_frame+0xff4/0x1f10 fs/ntfs3/frecord.c:2779
 ntfs_compress_write+0x2768/0x3950 fs/ntfs3/file.c:1107
 ntfs_file_write_iter+0xf39/0x10d0 fs/ntfs3/file.c:1224
 do_iter_readv_writev+0x947/0xba0 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x22f/0x480 fs/read_write.c:1202
 __x64_sys_pwritev2+0xe4/0x150 fs/read_write.c:1202
 x64_sys_call+0x37d0/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:329
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:5171
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2416
 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline]
 alloc_pages_noprof mm/mempolicy.c:2507 [inline]
 folio_alloc_noprof+0x109/0x360 mm/mempolicy.c:2517
 filemap_alloc_folio_noprof+0x9d/0x420 mm/filemap.c:1007
 __filemap_get_folio+0xb45/0x1930 mm/filemap.c:1981
 ntfs_get_frame_pages+0xdc/0x5f0 fs/ntfs3/file.c:903
 ntfs_compress_write+0x1cf4/0x3950 fs/ntfs3/file.c:1056
 ntfs_file_write_iter+0xf39/0x10d0 fs/ntfs3/file.c:1224
 do_iter_readv_writev+0x947/0xba0 fs/read_write.c:-1
 vfs_writev+0x52a/0x1500 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x22f/0x480 fs/read_write.c:1202
 __x64_sys_pwritev2+0xe4/0x150 fs/read_write.c:1202
 x64_sys_call+0x37d0/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:329
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 13647 Comm: syz.2.2089 Not tainted 6.16.0-syzkaller-10499-g89748acdf226 #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
=====================================================