From: Dave Jones <davej@redhat.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrey Konovalov <andreyknvl@google.com>,
linux-kernel@vger.kernel.org, fweisbec@gmail.com,
mingo@redhat.com, Dmitry Vyukov <dvyukov@google.com>,
Kostya Serebryany <kcc@google.com>
Subject: Re: Fwd: Potential out-of-bounds in ftrace_regex_release
Date: Wed, 2 Oct 2013 18:34:37 -0400 [thread overview]
Message-ID: <20131002223437.GA15728@redhat.com> (raw)
In-Reply-To: <1380745082.12351.6.camel@pippen.local.home>
On Wed, Oct 02, 2013 at 04:18:02PM -0400, Steven Rostedt wrote:
> On Wed, 2013-10-02 at 14:57 -0400, Dave Jones wrote:
>
> > And that's the cause. I wonder what was being opened.
> > Do you happen to have a trinity-child log for that thread ?
>
> Thanks for the update. This definitely looks like the bug, and explains
> a lot. I'll look into this, as I'm currently at a conference, it may be
> sporadic.
another potential clue.. I looked over some logs from some crashes, and saw that just before
the crash, there was a call to unshare(), after which the uid changed from 1000 to 65534.
Is that something that ftrace is prepared for ?
Dave
next prev parent reply other threads:[~2013-10-02 22:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAAeHK+w+8=DGvFeuMAwS50RRvAGw1KkWHcivja5q-wmX8GtH2w@mail.gmail.com>
2013-10-02 18:38 ` Fwd: Potential out-of-bounds in ftrace_regex_release Andrey Konovalov
2013-10-02 18:57 ` Dave Jones
2013-10-02 19:06 ` Andrey Konovalov
2013-10-02 20:18 ` Steven Rostedt
2013-10-02 22:34 ` Dave Jones [this message]
2013-10-09 10:05 ` Andrey Konovalov
2013-10-10 2:23 ` Steven Rostedt
2013-10-14 8:29 ` Andrey Konovalov
2013-10-18 19:09 ` Steven Rostedt
2013-10-21 7:33 ` Andrey Konovalov
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