Re: [PATCH 3/3] kallsyms: Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()

From: Greg Kroah-Hartman
Date: Fri Feb 21 2020 - 06:53:08 EST

On Fri, Feb 21, 2020 at 11:44:04AM +0000, Will Deacon wrote:
> kallsyms_lookup_name() and kallsyms_on_each_symbol() are exported to
> modules despite having no in-tree users and being wide open to abuse by
> out-of-tree modules that can use them as a method to invoke arbitrary
> non-exported kernel functions.
> Unexport kallsyms_lookup_name() and kallsyms_on_each_symbol().
> Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
> Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Quentin Perret <qperret@xxxxxxxxxx>
> Signed-off-by: Will Deacon <will@xxxxxxxxxx>

Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>