From: Jiri Olsa <jolsa@redhat.com>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>,
lkml <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
linux-perf-users@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Andi Kleen <ak@linux.intel.com>,
eranian@google.com,
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Subject: Re: System crash with perf_fuzzer (kernel: 5.0.0-rc3)
Date: Fri, 1 Feb 2019 18:38:16 +0100 [thread overview]
Message-ID: <20190201173816.GA19907@krava> (raw)
In-Reply-To: <alpine.DEB.2.21.1902011125290.25915@macbook-air>
On Fri, Feb 01, 2019 at 11:27:28AM -0500, Vince Weaver wrote:
> On Fri, 1 Feb 2019, Jiri Olsa wrote:
>
> > with attached patch I did not trigger the fuzzer crash
> > for over a day now, could you guys try?
>
> I've just started fuzzing with the patch applied. Often it takes a few
> hours to trigger the bug.
cool, thanks
>
> Added question about this bug. It appeared that the crash was triggered
> by the BTS driver over-writing kernel memory. The data being written, was
> this user controllable? Meaning, is this a security issue being fixed, or
> just a crashing issue?
yea, I have an example that can trigger it immediately
jirka
next prev parent reply other threads:[~2019-02-01 17:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-25 6:46 System crash with perf_fuzzer (kernel: 5.0.0-rc3) Ravi Bangoria
2019-01-25 15:11 ` Vince Weaver
2019-01-25 16:00 ` Andi Kleen
2019-01-31 7:58 ` Ravi Bangoria
2019-01-31 13:00 ` Andi Kleen
2019-01-31 20:27 ` Cong Wang
2019-01-31 20:39 ` Andi Kleen
2019-03-06 23:09 ` Pavel Machek
2019-01-30 18:36 ` Jiri Olsa
2019-01-30 20:39 ` Andi Kleen
2019-01-30 22:33 ` Jiri Olsa
2019-01-31 7:36 ` Jiri Olsa
2019-01-31 8:27 ` Jiri Olsa
2019-02-01 7:43 ` Jiri Olsa
2019-02-01 7:54 ` Ravi Bangoria
2019-02-02 3:24 ` Ravi Bangoria
2019-02-02 10:34 ` Jiri Olsa
2019-02-01 16:27 ` Vince Weaver
2019-02-01 17:38 ` Jiri Olsa [this message]
2019-02-02 17:58 ` Vince Weaver
2019-02-04 12:35 ` [PATCH] perf: Add check_period pmu callback Jiri Olsa
2019-02-11 10:11 ` Peter Zijlstra
2019-02-11 13:22 ` [tip:perf/urgent] perf/x86: Add check_period PMU callback tip-bot for Jiri Olsa
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190201173816.GA19907@krava \
--to=jolsa@redhat.com \
--cc=acme@kernel.org \
--cc=ak@linux.intel.com \
--cc=eranian@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-perf-users@vger.kernel.org \
--cc=naveen.n.rao@linux.vnet.ibm.com \
--cc=peterz@infradead.org \
--cc=ravi.bangoria@linux.ibm.com \
--cc=vincent.weaver@maine.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.