From owner-freebsd-current@FreeBSD.ORG Wed Jul 21 20:45:38 2010 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2136D1065676 for ; Wed, 21 Jul 2010 20:45:38 +0000 (UTC) (envelope-from r.c.ladan@gmail.com) Received: from mail-wy0-f182.google.com (mail-wy0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id AF18D8FC14 for ; Wed, 21 Jul 2010 20:45:37 +0000 (UTC) Received: by wyj26 with SMTP id 26so23488wyj.13 for ; Wed, 21 Jul 2010 13:45:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:date:message-id :subject:from:to:content-type; bh=jxre/iVsCdm04FMGplXXssFzCqjKopGBZAVxElU9nl8=; b=BGv0eGTCnCEA6B/LxR5BLFci/O0OtiK9J1XxUqqk7cMH6l/5CNDEnbUztkyVaOdpMF 4j7QEFpIEO5TVdtU1C5g6yReas774I3WF2A/XqcbcbMIACW7nx70dZNW9bU2P8dzn/Wj I4yNXLRTjoWCOulGa2H2guyslZKVa8gdNwOV4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=mWQ/4APII53vdPxryXcB/2DgTFBW+8tCIpyBDT90ku9WgivGBKcDomSvIeQTaB30Bv d6YNU+rI4ojZ26CTgI47vx9Nnc7TmgGTm/bpbHEXt+/hl6rHZrdCp2PMS0/sumBWIWfg zLAzCkBHNwkBS94ATq4NWg4ekWMd5269jtNrY= MIME-Version: 1.0 Received: by 10.216.231.26 with SMTP id k26mr766422weq.3.1279745136329; Wed, 21 Jul 2010 13:45:36 -0700 (PDT) Received: by 10.216.236.1 with HTTP; Wed, 21 Jul 2010 13:45:36 -0700 (PDT) Date: Wed, 21 Jul 2010 22:45:36 +0200 Message-ID: From: =?ISO-8859-1?Q?Ren=E9_Ladan?= To: current@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Mailman-Approved-At: Wed, 21 Jul 2010 22:11:10 +0000 Cc: Subject: panic with clangbsd kernel in kern/vfs_bio.c 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: Wed, 21 Jul 2010 20:45:38 -0000 Hi, on my Acer 7738G laptop running FreeBSD 9.0-amd64 r209980 (with latest clangbsd kernel), I encountered this panic (recovered from /var/log/messages), while doing some moderately light load (portmaster, openoffice, firefox, thunderbird in an xfce4 session): Jul 21 22:29:47 acer kernel: panic: buf 0xffffff80526d00c0 already counted as free Jul 21 22:29:47 acer kernel: cpuid = 1 Jul 21 22:29:47 acer kernel: KDB: enter: panic Jul 21 22:29:47 acer kernel: Jul 21 22:29:47 acer kernel: 0xffffff0005093b40: tag devfs, type VCHR Jul 21 22:29:47 acer kernel: usecount 1, writecount 0, refcount 588 mountedhere 0xffffff0004c84200 Jul 21 22:29:47 acer kernel: flags () Jul 21 22:29:47 acer kernel: v_object 0xffffff00050adbd0 ref 0 pages 12590 Jul 21 22:29:47 acer kernel: lock type devfs: EXCL by thread 0xffffff0004c59880 (pid 17) Jul 21 22:29:47 acer kernel: dev ad4s1f I have the following modules loaded: acer % kldstat Id Refs Address Size Name 1 32 0xffffffff80100000 f925f0 kernel (GENERIC) 2 1 0xffffffff81093000 1bd28 if_iwn.ko 3 1 0xffffffff810af000 296f8 snd_hda.ko 4 2 0xffffffff810d9000 85fe8 sound.ko 5 1 0xffffffff8115f000 570f8 iwn5000fw.ko 6 1 0xffffffff811b7000 dc29d0 nvidia.ko (ports/x11/nvidia-driver, version 256.35 with patches from current@) 7 3 0xffffffff81f7a000 423c8 linux.ko 8 1 0xffffffff81fbd000 d38 biosfont.ko (ports/sysutils/biosfont) 9 1 0xffffffff82012000 3a73 linprocfs.ko acer % grep -nr "already counted as free" ~/freebsd/clangbsd/sys/* | grep -v \.svn kern/vfs_bio.c:401: ("buf %p already counted as free", bp)); acer % ident kern/vfs_bio.c kern/vfs_bio.c: $FreeBSD: projects/clangbsd/sys/kern/vfs_bio.c 209170 2010-06-14 18:45:33Z rdivacky $ acer % ident /sys/kern/vfs_bio.c /sys/kern/vfs_bio.c: $FreeBSD: head/sys/kern/vfs_bio.c 209902 2010-07-11 20:11:44Z alc $ So it might be fixed already. Let me know if you need more information. Unfortunately I didn't get a core dump, although dumpdev="AUTO" in /etc/rc.conf. The laptop rebooted by itself. Regards, Rene