Date: Sun, 29 Jul 2001 23:50:17 +0100 From: Ian Dowse <iedowse@maths.tcd.ie> To: mjacob@feral.com Cc: John Baldwin <jhb@FreeBSD.org>, smp@FreeBSD.org Subject: Re: kaboom... Message-ID: <200107292350.aa62249@salmon.maths.tcd.ie> In-Reply-To: Your message of "Sun, 29 Jul 2001 15:39:00 PDT." <20010729153617.C44279-100000@wonky.feral.com>
next in thread | previous in thread | raw e-mail | index | archive | help
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
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-smp" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi? <200107292350.aa62249>