Re: [PATCH] af_unix: Fix splice-bind deadlock

From: Rainer Weikusat
Date: Sun Jan 03 2016 - 13:05:16 EST


Rainer Weikusat <rw@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> writes:

[...]

> + dentry = NULL;
> + if (sun_path[0]) {
> + /* Get the parent directory, calculate the hash for last
> + * component.
> + */
> + dentry = kern_path_create(AT_FDCWD, sun_path, &path, 0);
> +
> + err = PTR_ERR(dentry);
> + if (IS_ERR(dentry))
> + goto out;
> + }
> +

This is wrong because kern_path_create can return with -EEXIST which
needs to be translated to -EADDRINUSE for this case. I'll fix that.
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