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Message-ID: <CA+G9fYunBonRypu0QruuH23H0chET=sZH7FfbK8nGabkCFd9sg@mail.gmail.com>
Date: Thu, 3 Nov 2022 11:02:46 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: linux-perf-users@...r.kernel.org,
open list <linux-kernel@...r.kernel.org>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
regressions@...ts.linux.dev, lkft-triage@...ts.linaro.org,
Marco Elver <elver@...gle.com>,
"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: qemu-i386: perf: BUG: kernel NULL pointer dereference, address: 00000148
On Thu, 3 Nov 2022 at 02:54, Greg KH <gregkh@...uxfoundation.org> wrote:
>
> On Wed, Nov 02, 2022 at 06:42:52PM +0530, Naresh Kamboju wrote:
> > Following kernel BUG: noticed on qemu-i386 while running perf test suite
> > on stable-rc 6.0.7-rc1 the image was built with gcc-11.
> >
> > The System did not recover after the crash.
> >
> > Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
>
> What is this a regression from? Does this happen on older stable
> kernels? Linus's tree?
This looks like an intermittent problem.
I have tested multiple times and found that it is an intermittent crash
with qemu-i386 while running stable-rc 6.x. That is the one of the reasons
for not including the stable list and not reporting this as a regression.
> How about 'git bisect'?
Since it is an intermittent crash it is hard to bisect.
- Naresh
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