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cc: dyson@freebsd.org, davidg@freebsd.org
Subject: vm_page_free panic with KTRACE
Date: Sun, 08 Oct 1995 16:35:02 -0700
From: Steven Wallace <swallace@ece.uci.edu>
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I just noticed that doing a ktrace will cause a vm_page_free panic:
vm_page_free:  offset(46092288), bmapped(0), busy(1), PG_BUSY - freeing busy pg.

Just do a ktrace and then during or shortly after while swapping
it will panic.  Don't do ktrace, system up for long time.
Same ktrace/free bug in today -current and sept 25 -current kernel of mine.

Steven

P.S.  I *need* ktrace to debug the stupid ibcs2 emulator (: