linux-hardening - Re: [PATCH v2] kobject: Replace strlcpy with strscpy

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Date:   Wed, 30 Aug 2023 11:47:21 -0400
From:   Azeem Shaikh <azeemshaikh38@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Laight <David.Laight@...lab.com>,
        Kees Cook <keescook@...omium.org>
Cc:     linux-hardening@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] kobject: Replace strlcpy with strscpy

> -       len = strlcpy(&env->buf[env->buflen], subsystem, buffer_size);
> -       if (len >= buffer_size) {
> -               pr_warn("init_uevent_argv: buffer size of %d too small, needed %d\n",
> -                       buffer_size, len);
> +       len = strscpy(&env->buf[env->buflen], subsystem, buffer_size);
> +       if (len < 0) {
> +               pr_warn("init_uevent_argv: insufficient buffer space "
> +                        "(%u left) for %s\n", buffer_size, subsystem);

Please ignore this patch. There's some weird indentation that I
noticed here that I'll fix in v3.