Date: 08 May 2001 01:34:27 +0200 From: Dag-Erling Smorgrav <des@ofug.org> To: Valentin Nechayev <netch@iv.nn.kiev.ua> Cc: Rohit Rakshe <rakshe@cs.umn.edu>, freebsd-hackers@FreeBSD.ORG Subject: Re: FPU exception, kernel panic Message-ID: <xzpn18olon0.fsf@flood.ping.uio.no> In-Reply-To: <20010507083206.A511@iv.nn.kiev.ua> References: <Pine.GSO.4.31.0105051400070.16637-100000@mercury.cs.umn.edu> <Pine.GSO.4.31.0105061711210.15916-100000@melchizedek.cs.umn.edu> <20010507083206.A511@iv.nn.kiev.ua>
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Valentin Nechayev <netch@iv.nn.kiev.ua> writes: > (I cannot even guarantree 50% this is the same problem, but...) > There were some reports in current@ about incorrect usage of i586_bzero() > which uses FPU for zero-filling. It generated random kernel panics mainly > on K6-2, also on P5-MMX and similars. You can try to disable such bzero, > but IMHO it is reasonable to upgrade to 4.3-RELEASE (RELENG_4_3) first. 1) this bug only occurs on -CURRENT systems that have interrupt preemption enabled (i.e. anything newer than february) 2) the symptoms are nowhere near what's described here anyway - you'd see the kernel stack getting smashed, not an FPU exception. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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