Date: Sun, 29 Jul 2001 15:54:12 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: Ian Dowse <iedowse@maths.tcd.ie> Cc: John Baldwin <jhb@FreeBSD.org>, <smp@FreeBSD.org> Subject: Re: kaboom... Message-ID: <20010729155402.V44279-100000@wonky.feral.com> In-Reply-To: <200107292350.aa62249@salmon.maths.tcd.ie>
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Ah. Sorry for the noise then.
On Sun, 29 Jul 2001, Ian Dowse wrote:
> In message <20010729153617.C44279-100000@wonky.feral.com>, Matthew Jacob writes
> :
> >Happened again once. It may be if I do 2 make -j 8 kernel builds I get this.
> >The panic is somewhere in exit1 where marked:
>
> > if ((p->p_pptr->p_procsig->ps_flag & PS_NOCLDWAIT)
> > || p->p_pptr->p_sigacts->ps_sigact[_SIG_IDX(SIGCHLD)] == SIG_IGN)
>
> Yeah, see my post to -current on friday ("SIGCHLD changes causing..").
> Matt Dillon is apparently looking into this, but I was able to find
> out that this is caused when the parent process is swapped out. It
> is ok to check p_procsig->ps_flag, but p_sigacts is in the struct
> user area that is inaccessible when the process is swapped out.
>
> Backing out kern_sig.c r1.125 and kern_exit.c r1.131 should fix it.
>
> Ian
>
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