Date: Fri, 19 Mar 1999 07:40:02 -0800 (PST) From: David Greenman <dg@root.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/5641: running processes at the IDLE priority (idprio) can crash the kernel Message-ID: <199903191540.HAA82225@freefall.freebsd.org>
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The following reply was made to PR kern/5641; it has been noted by GNATS.
From: David Greenman <dg@root.com>
To: Sheldon Hearn <sheldonh@iafrica.com>
Cc: Matthew Dillon <dillon@apollo.backplane.com>,
freebsd-gnats-submit@freebsd.org
Subject: Re: kern/5641: running processes at the IDLE priority (idprio) can crash the kernel
Date: Fri, 19 Mar 1999 07:35:05 -0800
>Is the problem reported in kern/5641 something that affects 3.1-STABLE /
>4.0-CURRENT? If not, does either of you have an interest in working on
>this in the 2.2 branch?
Yes.
>If the answer from each of you is "no" for both of the questions above,
>I'll close the PR. But please do reply. :-)
The problem was avoided by making idprio a superuser command. The problem
is escentially a priority inversion and the solution is to elevate the
priority of idprio processes to normal priority while they are executing
kernel code.
-DG
David Greenman
Co-founder/Principal Architect, The FreeBSD Project
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