Date: Sat, 19 Oct 2013 09:38:01 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Julio Merino <julio@meroh.net> Cc: ppc@freebsd.org Subject: Re: powerpc/183040: Nested signal handling is broken Message-ID: <20131019063801.GK3865@kib.kiev.ua> In-Reply-To: <CADyfeQWCaS7SfOh%2B=1762pEUJhTarQHe2MMpFov_TCWdWQ43_A@mail.gmail.com> References: <201310162349.r9GNnDud012497@mastodon.meroh.net> <20131017073158.GB3865@kib.kiev.ua> <CADyfeQWCaS7SfOh%2B=1762pEUJhTarQHe2MMpFov_TCWdWQ43_A@mail.gmail.com>
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On Fri, Oct 18, 2013 at 04:07:30PM -0400, Julio Merino wrote:
> On Thu, Oct 17, 2013 at 3:31 AM, Konstantin Belousov
> <kostikbel@gmail.com> wrote:
> > What you could do, is to localize the point where the breakage occur.
> > Add a function like this:
> >
> > static void
> > print_sig_disposition(int signo)
> > {
> > struct sigaction sa;
> > sigaction(signo, NULL, &sa);
> > printf("sig %d handler %p\n", signo, sa.sa_handler);
> > }
> >
> > and sprinkle a calls to it often enough, to see where the reset of the
> > disposition happens. Insert the call to the function into the signal
> > handler as well.
>
> As far as I can tell, the sa_handler remains set all the time. It's
> correct before the call to kill().
Please provide the modified test program and its exact output.
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