Date: Wed, 24 Apr 1996 14:42:57 -0400 (EDT) From: "Marc G. Fournier" <scrappy@ki.net> To: Michael Smith <msmith@atrad.adelaide.edu.au> Cc: stable@freebsd.org Subject: Re: 9 makes + 1 caused panic... Message-ID: <Pine.NEB.3.93.960424144235.7193B-100000@freebsd.ki.net> In-Reply-To: <199604240546.PAA16508@genesis.atrad.adelaide.edu.au>
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On Wed, 24 Apr 1996, Michael Smith wrote: > Marc G. Fournier stands accused of saying: > > > > I just started up 9 make processes in /usr/src/lib, and > > had just started up a 10th on /usr/src/gnu/lib when it panic'd. > > I'm using -O2 -m486 -pipe, since someone mentioned that -pipe is > > a *really* good way to brutalize the system... > > > > The panic: > > > > Fatal Trap 12: page fault while in kernel mode > > fault virtual address = 0x700c > > fault code = supervisor write, protection violation > > instruction pointer = 0x8:0xf0106ae1 > > current process = 4244 (sh) > > interrupt mask = <there wasn't one??> > > kernel: type 12 trap, code=0 > > Stopped at _closef+0x85: decw 0xc(%esi) > > Hmm. Looking at closef(), the most likely candidate for this would be > > if (--fp->f_count > 0) > return (0); > > fp is dereferenced a few lines above, and I can't imagine how the structure > would have become write-protected by accident... > hardware or software bug then? :( Marc G. Fournier scrappy@ki.net Systems Administrator @ ki.net scrappy@freebsd.org
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