From owner-freebsd-current@FreeBSD.ORG Sun Sep 4 23:49:51 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 97E7C1065672 for ; Sun, 4 Sep 2011 23:49:51 +0000 (UTC) (envelope-from rysto32@gmail.com) Received: from mail-ew0-f54.google.com (mail-ew0-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id 31E788FC16 for ; Sun, 4 Sep 2011 23:49:50 +0000 (UTC) Received: by ewy1 with SMTP id 1so2503705ewy.13 for ; Sun, 04 Sep 2011 16:49:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=Fvqa6q6VrkPtd4+CSHZyFy/rH2gDmSD5SylfOEzHBjA=; b=XMGvct6rxJa1u8uuoQa5A5ADsFImaUG3PCoSI//ttp7KiBUoqJ/InLabgQXZ9pL8j+ NAECHgdOIsCmO1RrXrsoKbel3GGKNyaOBIeDCwbkeMl1M+ltt/sdiBhqwid0z4AHrow5 HXaeJmUxsauXwYOgGh61taMLOEvcGdiwlFsYQ= MIME-Version: 1.0 Received: by 10.213.28.194 with SMTP id n2mr507646ebc.145.1315178483223; Sun, 04 Sep 2011 16:21:23 -0700 (PDT) Received: by 10.213.35.20 with HTTP; Sun, 4 Sep 2011 16:21:23 -0700 (PDT) Date: Sun, 4 Sep 2011 19:21:23 -0400 Message-ID: From: Ryan Stone To: FreeBSD Current Content-Type: text/plain; charset=ISO-8859-1 Subject: panic: sched_priority: invalid priority 3990 on r225375 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Sep 2011 23:49:51 -0000 I've gotten the following panic twice while running recent builds of head under VirtualBox(FreeBSD 8.2 host). panic: sched_priority: invalid priority 3990: nice 0, ticks 1227873280 ftick 175669871 ltick 175679894 tick pri 3818 The crashes happened while I was running a stress test of the network stack. I have a client machine and a server machine. The client is running head with a patch that I'm trying to prove out; the server should be running with basically stock head as of r225375(I think that there's a couple of minor changes in the tree I used to build the server with, but I've gotten the crash on the client and the server, and neither have any uncommitted patches in common). The server is running several netcat instances in listen mode; the client has a script sitting in a loop starting netcat instances that connect to instances running on the server and send data from client -> server. The client also has a script that changes the routing tables periodically. Both the client and the server have crashed once so far. I haven't been running any tests on actual hardware so I can't say whether this is a FreeBSD problem or a VirtualBox problem. I'm going to start running the same tests against VMs running some version of FreeBSD 8 to see if I can reproduce the problem there. In the meantime, I've made a core.txt accessible in case anybody wants to take a look. You can find it at: http://people.freebsd.org/~rstone/sched_priority/core.txt.0.bz2 Please let me know if you need any more information.