Date: Wed, 23 Feb 2000 20:22:03 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: John Polstra <jdp@polstra.com> Cc: alpha@freebsd.org Subject: Re: pcb_onfault bug on alpha? Message-ID: <Pine.BSF.4.21.0002232018480.77743-100000@salmon.nlsystems.com> In-Reply-To: <200002231706.JAA38337@vashon.polstra.com>
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On Wed, 23 Feb 2000, John Polstra wrote: > In article <Pine.BSF.4.21.0002230914350.77743-100000@salmon.nlsystems.com>, > Doug Rabson <dfr@nlsystems.com> wrote: > > On Tue, 22 Feb 2000, John Polstra wrote: > > > > > Why doesn't copyerr reset "pcb_onfault" to 0? I think it should. > > > > Yes it should reset pcb_onfault. Scary. > > "Scary" sums up my feelings about it too. :-) Does this look right > as a fix? If so, I'll try to set up a test case and ask Jordan for > approval to commit it. This fix looks good. I'm trying to think what the symptom of this would be. Probably it would only affect a kernel mode SEGFAULT which happened after the copyin/out and turn an ugly panic into an uglier crash. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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