From owner-freebsd-current@FreeBSD.ORG Sun Apr 4 08:04:55 2010 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 A0209106564A for ; Sun, 4 Apr 2010 08:04:55 +0000 (UTC) (envelope-from bruce@cran.org.uk) Received: from muon.cran.org.uk (unknown [IPv6:2001:470:1f09:679::1]) by mx1.freebsd.org (Postfix) with ESMTP id 679228FC0A for ; Sun, 4 Apr 2010 08:04:55 +0000 (UTC) Received: from muon.cran.org.uk (localhost [127.0.0.1]) by muon.cran.org.uk (Postfix) with ESMTP id 9544DC400C for ; Sun, 4 Apr 2010 08:04:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on muon.cran.org.uk X-Spam-Level: X-Spam-Status: No, score=-3.4 required=8.0 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.2.5 Received: from core.draftnet (87-194-158-129.bethere.co.uk [87.194.158.129]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by muon.cran.org.uk (Postfix) with ESMTPSA for ; Sun, 4 Apr 2010 08:04:54 +0000 (UTC) From: Bruce Cran To: freebsd-current@freebsd.org Date: Sun, 4 Apr 2010 09:04:50 +0100 User-Agent: KMail/1.13.1 (FreeBSD/9.0-CURRENT; KDE/4.4.1; amd64; ; ) MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201004040904.50998.bruce@cran.org.uk> Subject: "npxdna in kernel mode!" from VIA_RNG_store 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 Apr 2010 08:04:55 -0000 I noticed my mini-ITX box (runnning -CURRENT) has been printing quite a few "npxdna in kernel mode!" messages recently, so I added KDB support to find out where they were coming from. The stack trace I got was: npxdna in kernel mode! KDB: stack backtrace: db_trace_self_wrapper(c07de67f,c8297ab8,c07a477e,c07fc759,7,...) at db_trace_self_wrapper+0x28 kdb_backtrace(c07fc759,7,33,50,13,...) at kdb_backtrace+0x31 trap(c8297ac4) at trap+0x55e calltrap() at calltrap+0x6 --- trap 0x16, eip = 0xc07801f0, esp = 0xc8297b04, ebp = 0xc8297b14 --- VIA_RNG_store(c0865760,4,c181e6c0,c054ad43,c0811dc0,...) at VIA_RNG_store+0x20 random_nehemiah_read(c185c000,80,2,c185c000,0,...) at random_nehemiah_read+0x71 random_read(c1476200,c8297c28,0,1000000,0,...) at random_read+0x7c devfs_read_f(c1566c08,c8297c28,c182e080,0,c181e6c0,...) at devfs_read_f+0xa1 fo_read(c1566c08,c8297c28,c182e080,0,c181e6c0,...) at fo_read+0x32 dofileread(c181e6c0,5,c1566c08,c8297c28,ffffffff,...) at dofileread+0x81 kern_readv(c181e6c0,5,c8297c28,5,c8297c48,...) at kern_readv+0x68 read(c181e6c0,c8297cc8,c181e6c0,c181e6c0,c187d2a8,...) at read+0x63 syscall(c8297d38) at syscall+0x3ad Xint0x80_syscall() at Xint0x80_syscall+0x20 --- syscall (3, FreeBSD ELF32, read), eip = 0x28398b83, esp = 0xbfbfde5c, ebp = 0xbfbfdf18 --- A dmesg can be found at http://www.cran.org.uk/~brucec/freebsd/dmesg.itx -- Bruce Cran