6.18-stable review patch. If anyone has any objections, please let me know.
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From: Sidharth Seela sidharthseela@gmail.com
[ 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: 78ab59fee07f2 ("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 --- fs/ntfs3/inode.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 3959f23c487a2..3a0676871bade 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -1722,6 +1722,7 @@ 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);