linux-kernel - Re: [BUG?]3.0-rc4+ftrace+kprobe: set kprobe at instruction 'stwu' lead to system crash/freeze

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: <BANLkTi=XZuV+UgBT9xdQ14YYL=16fwXvuA@mail.gmail.com>
Date:	Thu, 30 Jun 2011 15:08:32 +0800
From:	Yong Zhang <yong.zhang0@...il.com>
To:	ananth@...ibm.com
Cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Jim Keniston <jkenisto@...ux.vnet.ibm.com>,
	linuxppc-dev@...ts.ozlabs.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	paulus@...ba.org, galak@...nel.crashing.org,
	yrl.pp-manager.tt@...achi.com
Subject: Re: [BUG?]3.0-rc4+ftrace+kprobe: set kprobe at instruction 'stwu'
 lead to system crash/freeze

On Wed, Jun 29, 2011 at 2:46 PM, Ananth N Mavinakayanahalli
<ananth@...ibm.com> wrote:
>
> Certain functions are off limits for probing -- look for __kprobe

Yup.

> annotations in the kernel. Some such functions are arch specific, but
> show_interrupts() would definitely not be one of them. It works fine on
> my (64bit) test box.
>
> At this time, I think your best bet is to work with the eldk folks to
> narrow down the problem.

I'll give a try :)

> Given the current set of data, I am inclined to
> think it could be an eldk bug, not a kernel one.

Maybe, but the fact is if I don't use kprobe, things works
very well.

I'll be back if there is any update :)

Thanks,
Yong

-- 
Only stand for myself
--
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/