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: 22+ 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
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