loop1: detected capacity change from 0 to 4096
ntfs3(loop1): ino=1a, mi_enum_attr
ntfs3(loop1): Mark volume as dirty due to NTFS errors
=====================================================
BUG: KMSAN: uninit-value in get_match_len fs/ntfs3/lznt.c:43 [inline]
BUG: KMSAN: uninit-value in longest_match_std+0x588/0xee0 fs/ntfs3/lznt.c:64
 get_match_len fs/ntfs3/lznt.c:43 [inline]
 longest_match_std+0x588/0xee0 fs/ntfs3/lznt.c:64
 compress_chunk fs/ntfs3/lznt.c:170 [inline]
 compress_lznt+0x4a0/0xe90 fs/ntfs3/lznt.c:339
 ni_write_frame+0xff8/0x1ef0 fs/ntfs3/frecord.c:2779
 ntfs_compress_write+0x2768/0x3950 fs/ntfs3/file.c:1083
 ntfs_file_write_iter+0xeb0/0x1040 fs/ntfs3/file.c:1196
 iter_file_splice_write+0x11fb/0x1df0 fs/splice.c:738
 ntfs_file_splice_write+0x1c6/0x2e0 fs/ntfs3/file.c:1311
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0x31a/0x7d0 fs/splice.c:1158
 splice_direct_to_actor+0x9a2/0x1550 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x1e0/0x350 fs/splice.c:1227
 do_sendfile+0x9eb/0x1110 fs/read_write.c:1370
 __do_compat_sys_sendfile fs/read_write.c:1452 [inline]
 __se_compat_sys_sendfile fs/read_write.c:1435 [inline]
 __ia32_compat_sys_sendfile+0x385/0x4d0 fs/read_write.c:1435
 ia32_sys_call+0x30ca/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:188
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:4982
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof mm/mempolicy.c:2510 [inline]
 folio_alloc_noprof+0x109/0x360 mm/mempolicy.c:2520
 filemap_alloc_folio_noprof+0x9d/0x420 mm/filemap.c:1007
 __filemap_get_folio+0xb45/0x1930 mm/filemap.c:1980
 ntfs_get_frame_pages+0xdc/0x5f0 fs/ntfs3/file.c:879
 ntfs_compress_write+0x1cf4/0x3950 fs/ntfs3/file.c:1032
 ntfs_file_write_iter+0xeb0/0x1040 fs/ntfs3/file.c:1196
 iter_file_splice_write+0x11fb/0x1df0 fs/splice.c:738
 ntfs_file_splice_write+0x1c6/0x2e0 fs/ntfs3/file.c:1311
 do_splice_from fs/splice.c:935 [inline]
 direct_splice_actor+0x31a/0x7d0 fs/splice.c:1158
 splice_direct_to_actor+0x9a2/0x1550 fs/splice.c:1102
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x1e0/0x350 fs/splice.c:1227
 do_sendfile+0x9eb/0x1110 fs/read_write.c:1370
 __do_compat_sys_sendfile fs/read_write.c:1452 [inline]
 __se_compat_sys_sendfile fs/read_write.c:1435 [inline]
 __ia32_compat_sys_sendfile+0x385/0x4d0 fs/read_write.c:1435
 ia32_sys_call+0x30ca/0x42c0 arch/x86/include/generated/asm/syscalls_32.h:188
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xb0/0x150 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/syscall_32.c:331
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:369
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 24121 Comm: syz.1.7615 Tainted: G        W           6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(undef) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
=====================================================