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BUG: KMSAN: uninit-value in ntfs_fix_post_read fs/ntfs3/fsntfs.c:180 [inline]
BUG: KMSAN: uninit-value in ntfs_read_bh+0x238/0xc00 fs/ntfs3/fsntfs.c:1297
 ntfs_fix_post_read fs/ntfs3/fsntfs.c:180 [inline]
 ntfs_read_bh+0x238/0xc00 fs/ntfs3/fsntfs.c:1297
 mi_read+0x393/0xe10 fs/ntfs3/record.c:133
 mi_get+0x181/0x560 fs/ntfs3/record.c:85
 ni_load_mi_ex+0x23f/0x720 fs/ntfs3/frecord.c:150
 ni_load_mi fs/ntfs3/frecord.c:182 [inline]
 ni_find_attr+0x3d7/0x940 fs/ntfs3/frecord.c:219
 attr_set_size+0xa63/0x6740 fs/ntfs3/attrib.c:484
 ntfs_file_release+0x255/0x310 fs/ntfs3/file.c:1297
 __fput+0x60b/0x1040 fs/file_table.c:468
 ____fput+0x25/0x30 fs/file_table.c:496
 task_work_run+0x206/0x2b0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0x2a6/0x330 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x1e3/0x210 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 ntfs_read_run_nb+0x7cf/0x1810 fs/ntfs3/fsntfs.c:1232
 ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1293
 mi_read+0x393/0xe10 fs/ntfs3/record.c:133
 mi_get+0x181/0x560 fs/ntfs3/record.c:85
 ni_load_mi_ex+0x23f/0x720 fs/ntfs3/frecord.c:150
 ni_load_mi fs/ntfs3/frecord.c:182 [inline]
 ni_find_attr+0x3d7/0x940 fs/ntfs3/frecord.c:219
 attr_set_size+0xa63/0x6740 fs/ntfs3/attrib.c:484
 ntfs_file_release+0x255/0x310 fs/ntfs3/file.c:1297
 __fput+0x60b/0x1040 fs/file_table.c:468
 ____fput+0x25/0x30 fs/file_table.c:496
 task_work_run+0x206/0x2b0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0x2a6/0x330 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x1e3/0x210 arch/x86/entry/syscall_64.c:100
 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
 grow_dev_folio fs/buffer.c:1050 [inline]
 grow_buffers fs/buffer.c:1116 [inline]
 __getblk_slow fs/buffer.c:1134 [inline]
 bdev_getblk+0x25a/0xad0 fs/buffer.c:1461
 __bread_gfp+0x99/0x690 fs/buffer.c:1515
 sb_bread_unmovable include/linux/buffer_head.h:352 [inline]
 ntfs_bread fs/ntfs3/fsntfs.c:1033 [inline]
 ntfs_read_run_nb+0x6d5/0x1810 fs/ntfs3/fsntfs.c:1225
 ntfs_read_bh+0x6a/0xc00 fs/ntfs3/fsntfs.c:1293
 mi_read+0x393/0xe10 fs/ntfs3/record.c:133
 mi_format_new+0x21f/0x910 fs/ntfs3/record.c:434
 ni_add_subrecord+0x15e/0x770 fs/ntfs3/frecord.c:321
 ntfs_look_free_mft+0xca0/0x1850 fs/ntfs3/fsntfs.c:715
 ni_ins_attr_ext+0xf7b/0x1480 fs/ntfs3/frecord.c:988
 ni_insert_attr+0x299/0xfb0 fs/ntfs3/frecord.c:1091
 ni_insert_nonresident+0x3bd/0x8d0 fs/ntfs3/frecord.c:1426
 attr_set_size+0x4319/0x6740 fs/ntfs3/attrib.c:653
 ntfs_set_size+0x222/0x330 fs/ntfs3/inode.c:861
 ntfs_extend+0x27c/0xf50 fs/ntfs3/file.c:359
 ntfs_file_write_iter+0x627/0x10d0 fs/ntfs3/file.c:1220
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0xbdf/0x15d0 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x2ab/0x3b0 fs/read_write.c:798
 x64_sys_call+0xe77/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:19
 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: 31521 Comm: syz.9.6204 Tainted: G        W           syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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