Date: Tue, 19 Dec 1995 03:07:43 -0800 From: David Greenman <davidg@Root.COM> To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) Cc: dufault@hda.com, gibbs@freefall.freebsd.org, m.sapsed@bangor.ac.uk, hm@hcs.de, freebsd-bugs@freebsd.org Subject: Re: Problem with FreeBSD 2.1.0-RELEASE Message-ID: <199512191108.DAA00173@corbin.Root.COM> In-Reply-To: Your message of "Tue, 19 Dec 95 10:29:45 %2B0100." <199512190929.KAA02915@uriah.heep.sax.de>
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>above. I'm suspecting something with the BUFHASH() macro. Remember, >the ``fault virtual address''es are somewhat weird for all bug >reports, in this case it's 0x52. So it's not a NULL pointer, hence >not easy to check. BUFHASH will always generate a kernel VA address of some kind - by it's nature it can never return numbers near 0. bh->lh_first, however, might become bogus if a corrupted buffer is removed from the list. I don't know what else to say about this...it's going to require a competent engineer to poke around in the kernel data structures to gather clues about the bug and then carefully back-track the problem. -DG
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