From: Dave Jones <davej@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: FTRACE_WARN_ON((rec->flags & ~FTRACE_FL_MASK) == 0))
Date: Tue, 1 Oct 2013 00:20:25 -0400 [thread overview]
Message-ID: <20131001042025.GA7038@redhat.com> (raw)
In-Reply-To: <1380599766.16752.6.camel@pippen.local.home>
On Mon, Sep 30, 2013 at 11:56:06PM -0400, Steven Rostedt wrote:
> > Steve, any further thoughts on this ? I can't do more than a few hours of fuzz-testing
> > without eventually running into this.
>
> I'm currently traveling, but as it seems that you have a pretty good
> reproducer, can trace what trinity does up to the point it crashes?
>
> I think we can do that with other buffers. If you download the latest
> trace-cmd, you can run:
>
> trace-cmd record -e syscalls -B trinity trinity <args>
>
> This will create a ftrace sub buffer called trinity and shouldn't be
> affected by the other ftrace functions. Then it should trace all the
> syscalls that trinity does. I guess a strace could be used too.
It seems like trace-cmd needs to be run as root. all hell will break loose if trinity gets root privs.
Dave
next prev parent reply other threads:[~2013-10-01 4:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-28 3:46 FTRACE_WARN_ON((rec->flags & ~FTRACE_FL_MASK) == 0)) Dave Jones
2013-08-28 13:54 ` Steven Rostedt
2013-08-28 13:58 ` Steven Rostedt
2013-08-28 15:17 ` Steven Rostedt
2013-08-28 18:27 ` Dave Jones
2013-08-28 18:29 ` Dave Jones
2013-08-28 19:27 ` Steven Rostedt
2013-09-30 17:12 ` Dave Jones
2013-10-01 3:56 ` Steven Rostedt
2013-10-01 4:20 ` Dave Jones [this message]
2013-10-01 12:28 ` Steven Rostedt
2013-10-02 14:16 ` Dave Jones
2013-10-02 16:43 ` Steven Rostedt
2013-10-02 16:53 ` Dave Jones
2013-08-28 14:31 ` Steven Rostedt
2013-08-28 16:23 ` Dave Jones
2013-08-28 16:50 ` Vince Weaver
2013-08-28 16:57 ` Steven Rostedt
2013-08-28 17:33 ` Dave Jones
-- strict thread matches above, loose matches on Subject: below --
2014-01-30 4:16 Dave Jones
2014-01-30 4:50 ` Steven Rostedt
2014-01-30 5:32 ` Dave Jones
2014-01-30 13:55 ` Steven Rostedt
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