linux-kernel - FYI: Xen or kernel bug?

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Message-ID: <da612e190704201321o115e44eck570e716fd7869555@mail.gmail.com>
Date:	Fri, 20 Apr 2007 22:21:26 +0200
From:	"Mark Stier" <markstier@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: FYI: Xen or kernel bug?

Hello,

tcp_vegas produces division by zero kernel oopses in dom0 when running
a Xen-patched 2.6.16.28 kernel. I have tracked down the problem to
line #256 in tcp_vegas.c: presumably due to flaky Xen timing, the rtt
seems to get zero from time to time (adding 1 to the rtt variable
solves the problem for me). The same should apply to line #140 in
tcp_veno.c, too.

Best regards,
Mark
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