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Date:      Fri, 23 Mar 2001 19:15:44 -0500
From:      "Matthew Emmerton" <matt@gsicomp.on.ca>
To:        <tweten@nas.nasa.gov>, <freebsd-stable@FreeBSD.ORG>
Subject:   Re: 4.3-RC Kernel Buffer Corruption (Was: 4.3-BETA makeworld of current  STABLE Fails)
Message-ID:  <007801c0b3f7$928026e0$1200a8c0@gsicomp.on.ca>
References:  <200103232356.f2NNuq601634@gilmore.nas.nasa.gov>

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> As promised, I have rebuilt the kernel from sources cvsupped on Wednesday
> night, and the kernel buffer corruption I saw previously continues.

> options CPU_FASTER_5X86_FPU #Enable faster FPU exception handler
> options CPU_SUSP_HLT #Enables suspend on HALT

Have you tried a kernel without these CPU options?  I know that the kernel
uses FP registers to copy blocks of memory around, and am wondering if this
"faster FPU exception handler" may be causing problems with that, leading to
the in-kernel memory corruption that you indicate.

--
Matt Emmerton


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