Date: Sun, 05 Jan 1997 22:08:52 -0800 From: David Greenman <dg@root.com> To: kristyn@gnu.ai.mit.edu Cc: questions@freebsd.org (FreeBSD Questions) Subject: Re: Help with CMAP error? Message-ID: <199701060608.WAA00742@root.com> In-Reply-To: Your message of "Sun, 05 Jan 1997 22:54:05 EST." <199701060354.WAA10277@hill.gnu.ai.mit.edu>
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> I got this this evening: > panic: pmap_zero_page: CMAP busy > > I got this while I was using the IPFilter and NAT and browsing from a >machine behind the gateway. What does it mean? It usually means that a demand-zero page fault occurred at interrupt time and while a demand-zero fault was being handled previous to the interrupt. Page faults are not allowed at interrupt time for any reason, and this most likely indicates a software bug - a bogus pointer dereference. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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