Date: Fri, 23 Feb 2007 15:19:25 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Sean Benoit <sean@digital-jungle.com> Cc: Remko Lodder <remko@elvandar.org>, freebsd-smp@freebsd.org Subject: Re: Kernel Update To 6.2 Stable Causes Dell PowerEdge 1750 (SMP) To Freeze On Boot Message-ID: <20070223151628.B88189@fledge.watson.org> In-Reply-To: <3B5A38D6-46E2-4370-B1F9-9455FD792FBF@digital-jungle.com> References: <3B5A38D6-46E2-4370-B1F9-9455FD792FBF@digital-jungle.com>
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On Thu, 22 Feb 2007, Sean Benoit wrote: > Last fall, while updating a 6.1 Stable kernel to 6.2 Pre-Release, I noted > that the then new kernel caused all our previously functioning Dell > PowerEdge 1750s (dual processor) to freeze on boot at the point in the boot > process where the second processor was being detected. Disabling the second > processor in the BIOS served as a temporary workaround and enabled the > systems to boot successfully. > > At that time I submitted a PR via the website and a patch was issued within > a few hours. The patch resolved the problem. I didn't keep that original > correspondence because I assumed that all was well moving forward. > > Last weekend I attempted to update the same systems for the first time since > last fall from the patched 6.2 Pre-Release kernel to the new 6.2 Stable > kernel. I was alarmed to see that the EXACT same issue had reappeared. The > symptoms are exactly the same - as is the workaround (disable the second > processor in the BIOS). > > I have once again submitted a PR (109267) via the website (details at > http://www.freebsd.org/cgi/query-pr.cgi?pr=109267); however, I have been > advised that I should post the issue to this mailing list instead/prior. > > Not sure what to do from here... Does this relate to PR 103697 which seems to be a similar correspondence: http://www.freebsd.org/cgi/query-pr.cgi?pr=103697 Are you using the ULE scheduler? Robert N M Watson Computer Laboratory University of Cambridge
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