linux-kernel - Re: [RFC][PATCH 15/16] objtool: Implement noinstr validation

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: <20200316164628.GG12521@hirez.programming.kicks-ass.net>
Date:   Mon, 16 Mar 2020 17:46:28 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     tglx@...utronix.de, linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [RFC][PATCH 15/16] objtool: Implement noinstr validation

On Mon, Mar 16, 2020 at 11:21:47AM -0500, Josh Poimboeuf wrote:
> On Mon, Mar 16, 2020 at 11:19:07AM -0500, Josh Poimboeuf wrote:
> > > And I was hoping to get vmlinux.o objtool clean, surprisingly there
> > > really aren't that many complaints. But the -i thing makes it run
> > > significantly faster without duplicating all the bits we've already
> > > checked.
> > 
> > My suggestion is that the "-i" option would be hard-coded (for now).  So
> > nothing extra would get checked.
> 
> If that wasn't clear, I mean that for vmlinux.o we'd only do the
> instr-checking.  For individual .o's we'd do everything else.

That'd get in the way of making vmlinux.o objtool clean though :/