linux-kernel - Re: frequent softlockups with 3.10rc6.

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: <1372551429.18733.363.camel@gandalf.local.home>
Date:	Sat, 29 Jun 2013 20:17:09 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Dave Jones <davej@...hat.com>, Dave Chinner <david@...morbit.com>,
	Oleg Nesterov <oleg@...hat.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrey Vagin <avagin@...nvz.org>
Subject: Re: frequent softlockups with 3.10rc6.

On Sat, 2013-06-29 at 15:23 -0700, Linus Torvalds wrote:

> Does the machine recover? Because if it does, I'd be inclined to just
> ignore it. Although it would be interesting to hear what triggers this
> - normal users - and I'm assuming you're still running trinity as
> non-root - generally should not be able to trigger stop-machine
> events..

It may be that we are live locking the system. If you enable too much
debug (I see lockdep is on as well), when the system is stressed, it
starts doing too much debugging and stops forward progress.

Dave, can you reproduce these hangs when you disable lockdep?

-- Steve


--
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/