linux-kernel - Re: [REGRESSION] x86/entry: TIF_SINGLESTEP handling is still broken

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Message-ID: <CAP045AoMRNjvVd1PdHvdf-nn3LNpTDp66sp+SAmZgNU888iFQQ@mail.gmail.com>
Date:   Sun, 31 Jan 2021 14:27:16 -0800
From:   Kyle Huey <me@...ehuey.com>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        open list <linux-kernel@...r.kernel.org>,
        "Robert O'Callahan" <rocallahan@...il.com>
Subject: Re: [REGRESSION] x86/entry: TIF_SINGLESTEP handling is still broken

On Sun, Jan 31, 2021 at 2:20 PM Andy Lutomirski <luto@...capital.net> wrote:
>
>
>
> > On Jan 31, 2021, at 2:08 PM, Kyle Huey <me@...ehuey.com> wrote:
> >
> > On Sun, Jan 31, 2021 at 2:04 PM Andy Lutomirski <luto@...capital.net> wrote:
> >> Indeed, and I have tests for this.
> >
> > Do you mean you already have a test case or that you would like a
> > minimized test case?
>
> A smallish test that we could stick in selftests would be great if that’s straightforward.

I'll look into it.

- Kyle