ntfs3: loop0: 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 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb63/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xe0 fs/read_write.c:652 x64_sys_call+0x3062/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 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:757 [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 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0xb63/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xe0 fs/read_write.c:652 x64_sys_call+0x3062/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 PID: 5023 Comm: syz-executor197 Not tainted 6.9.0-rc3-syzkaller-00073-ge8c39d0f57f3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 =====================================================