提交 d22e6338 编写于 作者: O Oleg Drokin 提交者: Al Viro

Fix mountpoint reference leakage in linkat

Recent changes to retry on ESTALE in linkat
(commit 442e31ca)
introduced a mountpoint reference leak and a small memory
leak in case a filesystem link operation returns ESTALE
which is pretty normal for distributed filesystems like
lustre, nfs and so on.
Free old_path in such a case.

[AV: there was another missing path_put() nearby - on the previous
goto retry]
Signed-off-by: NOleg Drokin: <green@linuxhacker.ru>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
上级 b168fff7
......@@ -3926,10 +3926,13 @@ SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname,
done_path_create(&new_path, new_dentry);
if (delegated_inode) {
error = break_deleg_wait(&delegated_inode);
if (!error)
if (!error) {
path_put(&old_path);
goto retry;
}
}
if (retry_estale(error, how)) {
path_put(&old_path);
how |= LOOKUP_REVAL;
goto retry;
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册