linux-kernel - Re: [RFC][PATCH v2 20/19] kbuild/objtool: Add objtool-vmlinux.o pass

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]

Message-ID: <20200318141318.GA20760@hirez.programming.kicks-ass.net>
Date:   Wed, 18 Mar 2020 15:13:18 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     tglx@...utronix.de, jpoimboe@...hat.com
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org, mhiramat@...nel.org,
        mbenes@...e.cz, brgerst@...il.com
Subject: Re: [RFC][PATCH v2 20/19] kbuild/objtool: Add objtool-vmlinux.o pass

On Wed, Mar 18, 2020 at 02:18:45PM +0100, Peter Zijlstra wrote:
> 
> This seems to 'work', must be perfect etc..

Uhu.. the moment I ran it on a kernel which has .noinstr.text

> +objtool_link()
> +{
> +	local objtoolopt;
> +
> +	if [ -n "${CONFIG_VMLINUX_VALIDATION}" ]; then
> +		objtoolopt="check"
> +		if [ -n "${CONFIG_FRAME_POINTER}" ]; then

I found that that ought to be -z :-)

> +			objtoolopt="${objtoolopt} --no-fp"
> +		fi