linux-kernel - Re: 2.6.22.6 + oprofile oops

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: <20071001144733.GA5975@elte.hu>
Date:	Mon, 1 Oct 2007 16:47:33 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Sami Farin <safari-kernel@...ari.iki.fi>,
	Linux kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.22.6 + oprofile oops


* Andi Kleen <andi@...stfloor.org> wrote:

> > 2007-09-22 13:53:32.527330808 <4>[ 3372.390363] Pid: 7, comm: 
> > events/0 Not tainted 2.6.22.6-cfs-v20.5-64-2 #7
             ^^^^^^^^^^^
> 
> Can you reproduce it with a non tainted kernel without any patches 
> like CFS applied?

the kernel is not tainted, as indicated in the log message above.

> The oops happens because oprofile tries to reference a NULL task in 
> its event buffer for a context switch, which might well be a minor 
> merging mistake or similar in the CFS backport.

CFS does not change that aspect of the oprofile code.

	Ingo
-
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/