linux-kernel - Re: general protection fault in perf_misc

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Message-ID: <20200923103431.GF28545@zn.tnic>
Date:   Wed, 23 Sep 2020 12:34:31 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        syzbot <syzbot+ce179bc99e64377c24bc@...kaller.appspotmail.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>, Jiri Olsa <jolsa@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        the arch/x86 maintainers <x86@...nel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>
Subject: Re: general protection fault in perf_misc_flags

On Wed, Sep 23, 2020 at 11:24:48AM +0200, Dmitry Vyukov wrote:
> 3. Run syzkaller locally with custom patches.

Let's say I wanna build the kernel with clang-10 using your .config and
run it in a vm locally. What are the steps in order to reproduce the
same workload syzkaller runs in the guest on the GCE so that I can at
least try get as close as possible to reproducing locally?

Thx.

-- 
Regards/Gruss,
    Boris.

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