linux-kernel - Re: rcu,sched: spinlock recursion on 3.5-rc2

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]

Date:	Tue, 12 Jun 2012 17:31:01 +0200
From:	Sasha Levin <levinsasha928@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...e.hu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>
Subject: Re: rcu,sched: spinlock recursion on 3.5-rc2

On Tue, 2012-06-12 at 17:15 +0200, Peter Zijlstra wrote:
> On Tue, 2012-06-12 at 17:07 +0200, Thomas Gleixner wrote:
> > Hmm, not sure. The deadlock was not triggered in switch_to. It was
> > just at the beginning of __schedule()
> > 
> > 
> How can you tell? switch_to() is a macro not a function, it won't ever
> show up on a stack-trace.. but I think you meant context_switch() but
> that typically gets inlined, similar problem.

addr2line -i confirmed it was pointing to switch_to(), if it matters.

btw, wouldn't it be nice if there were a short script that would take an
oops and convert all those kernel addresses into file+line numbers based
on a given vmlinux? It would make our lives so much easier.

--
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/