kern/51964: panic: race condition with realitexpire() called for zombie

[Tor.Egge at cvsup.no.freebsd.org]

The following reply was made to PR kern/51964; it has been noted by GNATS.

From: Tor.Egge at cvsup.no.freebsd.org
To: jilles at stack.nl
Cc: FreeBSD-gnats-submit at freebsd.org
Subject: Re: kern/51964: panic: race condition with realitexpire() called
 for	zombie
Date: Wed, 21 May 2003 15:06:18 GMT

 > The system has not panicked since I upgraded and applied the patch
 > (about 8 days ago), so it seems to be fixed.  The X server has been
 > started and shut down many times (we use X -once -query ...).  The patch
 > should perhaps be committed.
 
 I've been told that a hopefully better fix (without overhead in the
 common case) is being worked on.
 
 > The race condition (when callout_stop() is called, another thread may
 > still be executing in the callout function) may be present in other
 > parts of the system as well.
 
 Correct.
 
 - Tor Egge