Date: Wed, 15 Dec 2010 13:47:23 +0200 From: Andriy Gapon <avg@freebsd.org> To: perryh@pluto.rain.com Cc: freebsd-stable@freebsd.org Subject: Re: How to debug a double fault? (Re: Could MSGBUF_SIZE be made a loader tunable?) Message-ID: <4D08AACB.6060306@freebsd.org> In-Reply-To: <4d089a74.vwMJkPEIddt7PIxy%perryh@pluto.rain.com> References: <4cfc72a5.3nAjkv8mdrO/NrKQ%perryh@pluto.rain.com> <4CFD0633.9060509@freebsd.org> <4d089a74.vwMJkPEIddt7PIxy%perryh@pluto.rain.com>
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on 15/12/2010 12:37 perryh@pluto.rain.com said the following: > Fatal double fault: > eip = 0xc07feb98 > esp = 0xc101e000 > ebp = 0xc101e004 > cpuid = 0; apic id = 00 > panic: double fault > cpuid = 0 > > How do I go about tracking this down? Do you have the standard debugging options in your kernel? http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html BTW, are you sure that you correctly placed initialization of msgbufsize ? I am not saying that you haven't, just make sure that it is set before its first use. -- Andriy Gapon
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