Date: Wed, 6 Mar 2002 14:51:22 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Ian Dowse <iedowse@maths.tcd.ie> Cc: "Jan L. Peterson" <jlp@softhome.net>, freebsd-stable@FreeBSD.ORG Subject: Re: crashes on 4.5-RELEASE Message-ID: <200203062251.g26MpM258927@apollo.backplane.com> References: <200203062130.aa57106@salmon.maths.tcd.ie>
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:..
:>- if (space < resid + clen && uio &&
:>+ if (space < resid + clen &&
:
:>even with INVARIANTS turned off. Nor have I seen an xl0 watchdog
:>timeout.
:
:I actually doubt that this patch could help with the panics you
:were seeing. The only problem this is known to fix is one where you
:have an NFS filesystem mounted, and you load an IPFW rule that
:blocks outgoing NFS packets. In that situation it causes the system
:..
I didn't think the patch would help much either but two people
have reported to me that it seems to solve their crashing problems.
I wonder if a TCP nfs mount would cause the problem to occur more
often. Then you wouldn't need an IPFW rule.... a simple TCP stall
in a heavily loaded environment would be enough to cause the output
buffer to grow to a considerable size.
-Matt
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