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ntfs: treat any nonzero dio zero-range return as an error

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ntfs_dio_zero_range() returns either 0 or a negative errno from
blkdev_issue_zeroout(); it never returns a positive value.  The
zeroing failure check in ntfs_attr_fallocate() therefore never fired,
so a failed zeroing operation was silently ignored: the loop kept
going, the newly allocated clusters were folded into initialized_size
and the write could succeed leaving stale on-disk data.

Treat any nonzero return as an error and abort the allocation.

Fixes: 495e90fa33 ("ntfs: update attrib operations")
Assisted-by: atomcode:deepseek-v4-flash
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Wentao Guan 2026-08-25 13:46:59 +08:00 committed by Namjae Jeon
parent 8d139e3635
commit 607a947883
1 changed files with 1 additions and 1 deletions
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2
fs/ntfs/attrib.c
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@ -5704,7 +5704,7 @@ int ntfs_attr_fallocate(struct ntfs_inode *ni, loff_t start, loff_t byte_len, bo
lcn << vol->cluster_size_bits,
alloc_cnt <<
vol->cluster_size_bits);
if (err > 0)
if (err)
goto out;
}