linux-kernel - Re: [PATCH] x86/dumpstack: Walk frames when built with frame pointers

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] [day] [month] [year] [list]

Message-Id: <6385EF0C-1551-4D38-8F00-94258CA5AF4C@zytor.com>
Date:	Fri, 6 Jun 2014 20:09:46 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Richard Yao <ryao@...too.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"x86@...nel.org" <x86@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, Vineet Gupta <vgupta@...opsys.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>,
	Jiri Slaby <jslaby@...e.cz>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kernel@...too.org" <kernel@...too.org>,
	Brian Behlendorf <behlendorf1@...l.gov>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH] x86/dumpstack: Walk frames when built with frame pointers

The USB debug port is nice once you get it to work.  Assumes they haven't done anything clever like hide the special port behind a hub...

Sent from my tablet, pardon any formatting problems.

> On Jun 6, 2014, at 1:24, Borislav Petkov <bp@...en8.de> wrote:
> 
>> On Fri, Jun 06, 2014 at 10:17:26AM +0200, Peter Zijlstra wrote:
>> Hopefully the EFI pstore thing will work out, but I've already heard
>> that can wear out very quickly and render your machine a brick :-(
> 
> And not only that - write speed is awfully low. I hear you might be ok
> to record an oops or so. Continuous debug output, not so much.
> 
>> Me, I simply refuse to work on machines if they don't have a serial
>> line, but in general that's not a tenable position I suppose :/
> 
> Well, with all the other crap they put in modern machines, how hard it
> is to put a goddam stupid serial line out everywhere...? WTF do I need a
> goddam adaptive keyboard and other idiotic bling-bling if I can't have a
> simple serial line for debugging... Blergh.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/