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DragonFly bugs List (threaded) for 2004-05
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Re: buildworld panics with yesterday's kernel ...


From: Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 5 May 2004 11:07:18 -0700 (PDT)

:Hi All,
:
:With kern.mmxopt=0, my buildworld's are failing with
:'internal compiler error' at random times, and on a
:couple of occasions my system has panicked. Here are
:the gdb backtraces on the vmcores -
:
:First one (kernel not built for debugging)

    Andrew, you are getting the 'vm_page_alloc: free/cache page %p was dirty'
    panic.  This is what was happening after my initial FP code commit.

    Note that this is a very dangerous panic to get, you risk filesystem
    corruption!  I recommend that you drop back to a more reliable
    kernel before proceeding.

    What is the build date on your kernel and also make sure your source
    tree is up-to-date!

    Even so, the are likely still issues with the FP code in the current
    up-to-date source tree, which I've been tracking down with the help
    of David Rhodus.  But the current failure condition tends to be a
    very specific 'npxdna' panic.  I hope to commit a fix soon.

					-Matt



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