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ntfs3: Fix uninit buffer allocated by __getname()

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[ Upstream commit 9948dcb2f7b5a1bf8e8710eafaf6016e00be3ad6 ]

Fix uninit errors caused after buffer allocation given to 'de'; by
initializing the buffer with zeroes. The fix was found by using KMSAN.

Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Fixes: 78ab59fee0 ("fs/ntfs3: Rework file operations")
Signed-off-by: Sidharth Seela <sidharthseela@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sidharth Seela
2025-09-23 12:10:16 +05:30
committed by Greg Kroah-Hartman
parent 8bf729b963
commit dcb5e3cd96
1 changed files with 1 additions and 0 deletions
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fs/ntfs3/inode.c
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@@ -1758,6 +1758,7 @@ int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
de = __getname();
if (!de)
return -ENOMEM;
memset(de, 0, PATH_MAX);
/* Mark rw ntfs as dirty. It will be cleared at umount. */
ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);