linux-kernel - Re: [PATCH 2/3] x86/traps: Print non-canonical address on #GP

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Message-ID: <20191114180858.GA8520@zn.tnic>
Date:   Thu, 14 Nov 2019 19:08:58 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Jann Horn <jannh@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, X86 ML <x86@...nel.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/3] x86/traps: Print non-canonical address on #GP

On Thu, Nov 14, 2019 at 10:00:35AM -0800, Andy Lutomirski wrote:
> And I think this code should be skipped entirely if error_code != 0.

... or say that the #GP is happening due to a segment descriptor access.
Would make the figuring out why it happens a bit simpler as to where to
look.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette