linux-kernel - Re: sparc/ppc/arm compat siginfo ABI regressions: sending SIGFPE via kill() returns wrong values in si_pid and si

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Message-ID: <CA+55aFyzwzSH-fh9M1JLduq6dZXZZ9ZsyHUgJGSDeFZVy5_vtg@mail.gmail.com>
Date:   Wed, 11 Apr 2018 18:45:02 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        ppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-sparc@...r.kernel.org,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: sparc/ppc/arm compat siginfo ABI regressions: sending SIGFPE via
 kill() returns wrong values in si_pid and si_uid

On Wed, Apr 11, 2018 at 6:34 PM, Dmitry V. Levin <ldv@...linux.org> wrote:
>
> There is a clear pattern of sneaking in ABI changes using innocently
> looking commit messages.

Yes, this siginfo stuff has been a mess.

Eric - this needs to stop. Or we need to revert all that garbage entirely.

Send a fix. And stop changing the siginfo layout or field values.

                 Linus