loop2: detected capacity change from 0 to 4096
ntfs3: loop2: Different NTFS sector size (2048) and media sector size (512).
ntfs3: loop2: 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+0x56b/0xe00 fs/ntfs3/lznt.c:64
 get_match_len fs/ntfs3/lznt.c:43 [inline]
 longest_match_std+0x56b/0xe00 fs/ntfs3/lznt.c:64
 compress_chunk fs/ntfs3/lznt.c:170 [inline]
 compress_lznt+0x41f/0xef0 fs/ntfs3/lznt.c:336
 ni_write_frame+0xf8f/0x1c80 fs/ntfs3/frecord.c:2839
 ntfs_compress_write+0x25ce/0x3c80 fs/ntfs3/file.c:1021
 ntfs_file_write_iter+0xa30/0xec0 fs/ntfs3/file.c:1119
 __kernel_write_iter+0x64d/0xc80 fs/read_write.c:523
 __kernel_write+0xca/0x100 fs/read_write.c:543
 __dump_emit fs/coredump.c:818 [inline]
 dump_emit+0x3aa/0x5d0 fs/coredump.c:855
 elf_core_dump+0x46c7/0x5ae0 fs/binfmt_elf.c:2035
 do_coredump+0x32d5/0x4920 fs/coredump.c:769
 get_signal+0x267e/0x2d00 kernel/signal.c:2896
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x5d/0x160 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598
 alloc_pages_mpol+0x299/0x990 mm/mempolicy.c:2264
 alloc_pages mm/mempolicy.c:2335 [inline]
 folio_alloc+0x1d0/0x230 mm/mempolicy.c:2342
 filemap_alloc_folio+0xa6/0x440 mm/filemap.c:984
 __filemap_get_folio+0xa10/0x14b0 mm/filemap.c:1926
 pagecache_get_page+0x4a/0x1a0 mm/folio-compat.c:93
 find_or_create_page include/linux/pagemap.h:759 [inline]
 ntfs_get_frame_pages+0xdc/0xa00 fs/ntfs3/file.c:820
 ntfs_compress_write+0x1bdc/0x3c80 fs/ntfs3/file.c:970
 ntfs_file_write_iter+0xa30/0xec0 fs/ntfs3/file.c:1119
 __kernel_write_iter+0x64d/0xc80 fs/read_write.c:523
 __kernel_write+0xca/0x100 fs/read_write.c:543
 __dump_emit fs/coredump.c:818 [inline]
 dump_emit+0x3aa/0x5d0 fs/coredump.c:855
 elf_core_dump+0x46c7/0x5ae0 fs/binfmt_elf.c:2035
 do_coredump+0x32d5/0x4920 fs/coredump.c:769
 get_signal+0x267e/0x2d00 kernel/signal.c:2896
 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x5d/0x160 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 PID: 12650 Comm: syz-executor.2 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
=====================================================