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Date:      Sun, 8 Feb 2004 18:38:21 -0800
From:      Kris Kennaway <kris@obsecurity.org>
To:        current@FreeBSD.org
Subject:   Reproducible "calcru: negative time ..." on SMP system
Message-ID:  <20040209023821.GA30092@xor.obsecurity.org>

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I discovered that on a 5.2-BETA SMP system I can cause

Feb  8 18:29:32 <kern.crit> bento kernel: calcru: negative time of 6816 usec for pid 50286 (grep)
Feb  8 18:29:41 <kern.crit> bento kernel: calcru: negative time of 7308 usec for pid 51007 (grep)
Feb  8 18:30:41 <kern.crit> bento kernel: calcru: negative time of 6104 usec for pid 54944 (grep)
Feb  8 18:30:42 <kern.crit> bento kernel: calcru: negative time of 5933 usec for pid 54962 (grep)

by running a shell script that does lots of greps, and leaning on the
^T key in the shell to send the process lots of SIGINFOs.

Kris

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