linux-kernel - Re: gdbserver + fsgsbase kaputt

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Message-Id: <E74AC970-CFCF-4CFD-A71F-F719F5BCE2DC@amacapital.net>
Date:   Mon, 11 Jan 2021 13:06:54 -0800
From:   Andy Lutomirski <luto@...capital.net>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Andy Lutomirski <luto@...nel.org>,
        "Chang S. Bae" <chang.seok.bae@...el.com>, tdevries@...e.com,
        x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: Re: gdbserver + fsgsbase kaputt


> On Jan 11, 2021, at 12:00 PM, Borislav Petkov <bp@...en8.de> wrote:
> 


> Or do you mean I should add "unsafe_fsgsbase" to grub cmdline and bisect
> with fsgsbase enabled in all test kernels?

Yes. But I can also look myself in a bit.