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fs/ntfs3: Fix possible deadlock in mi_read

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BugLink: https://bugs.launchpad.net/bugs/2099996

[ Upstream commit 03b097099eef255fbf85ea6a786ae3c91b11f041 ]

Mutex lock with another subclass used in ni_lock_dir().

Reported-by: syzbot+bc7ca0ae4591cb2550f9@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
CVE-2024-50245
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Konstantin Komarov
2025-02-25 22:59:22 +09:00
committed by Stefan Bader
parent 2e84d7f874
commit bc8746a391
1 changed files with 1 additions and 1 deletions
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fs/ntfs3/namei.c
+1 -1
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@@ -81,7 +81,7 @@ static struct dentry *ntfs_lookup(struct inode *dir, struct dentry *dentry,
if (err < 0)
inode = ERR_PTR(err);
else {
ni_lock(ni);
ni_lock_dir(ni);
inode = dir_search_u(dir, uni, NULL);
ni_unlock(ni);
}