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From: "David Xu" <davidxu@freebsd.org>
To: "Terry Lambert" <tlambert2@mindspring.com>,
	"Bryan Liesner" <bleez@verizon.net>
References: <20030529164240.X769@gravy.homeunix.net>
	<3ED71E39.A0F8EBC3@mindspring.com>
Date: Fri, 30 May 2003 17:11:56 +0800
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cc: freebsd-current@freebsd.org
Subject: Re: panic: kern/52718
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----- Original Message -----=20
From: "Terry Lambert" <tlambert2@mindspring.com>
To: "Bryan Liesner" <bleez@verizon.net>
Cc: <freebsd-current@freebsd.org>
Sent: Friday, May 30, 2003 5:02 PM
Subject: Re: panic: kern/52718


> Bryan Liesner wrote:
> >=20
> > Is anyone going to look at this before the next release?
> > Of course, if more info is needed, I'll send it along.  No dump is
> > available - it panics during boot.
> >=20
> > http://www.freebsd.org/cgi/query-pr.cgi?pr=3D52718
>=20
> This was caused by rev. 1.3 of a commit by Jeff Robertson to
> kern_utmx.c.  The problem is that the proc struct is not locked
> for:
>=20
>         FOREACH_THREAD_IN_PROC(td->td_proc, td0)
>=20
> in the lock and unlock.
>=20
> Either lock the proc before and unlock it after this, in both
> _utmx_lock() and _utmx_unlock(), or revert the code to 1.2.
>=20
> It's pretty simple.  No one needs t look at it, all they need
> to do is act on information already present.
>=20

kern_sig.c has same issue in several places.

> -- Terry
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David Xu