linux-kernel - Re: [PATCH 1/3] kallsyms: don't leak address when symbol not found

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Message-ID: <20171218184324.527ffd0e@gandalf.local.home>
Date:   Mon, 18 Dec 2017 18:43:24 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Tobin C. Harding" <me@...in.cc>
Cc:     Felix Fietkau <nbd@....name>, kernel-hardening@...ts.openwall.com,
        Tycho Andersen <tycho@...ho.ws>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Alexei Starovoitov <ast@...nel.org>,
        linux-kernel@...r.kernel.org,
        Network Development <netdev@...r.kernel.org>
Subject: Re: [PATCH 1/3] kallsyms: don't leak address when symbol not found

On Tue, 19 Dec 2017 09:41:29 +1100
"Tobin C. Harding" <me@...in.cc> wrote:

> Current suggestion on list is to remove this function. Do you have a use
> case in mind where debugging will break? We could add a fix to this
> series if so. Otherwise next version will likely drop
> string_is_no_symbol()

What about adding a kernel command line parameter that lets one put
back the old behavior.

"insecure_print_all_symbols" ?

-- Steve