netdev - Re: [PATCH] net: mscc: Fix non-GPL export of regmap APIs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 10 Aug 2021 12:55:37 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Mark Brown <broonie@...nel.org>
CC:     Claudiu Manoil <claudiu.manoil@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] net: mscc: Fix non-GPL export of regmap APIs

On Tue, Aug 10, 2021 at 01:37:48PM +0100, Mark Brown wrote:
> The ocelot driver makes use of regmap, wrapping it with driver specific
> operations that are thin wrappers around the core regmap APIs. These are
> exported with EXPORT_SYMBOL, dropping the _GPL from the core regmap
> exports which is frowned upon. Add _GPL suffixes to at least the APIs that
> are doing register I/O.
> 
> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---

Stupid question: is this enough? We also have order-two symbols exported
as non-GPL, which call one of {__ocelot_read_ix, __ocelot_write_ix,
__ocelot_rmw_ix, ocelot_port_writel, ocelot_port_rmwl, ocelot_regfields_init,
ocelot_regmap_init}, and therefore indirectly call regmap. In fact, I
think that all symbols exported by ocelot do that.