From owner-freebsd-current@FreeBSD.ORG Tue Jan 6 12:26:17 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8D33216A4CE for ; Tue, 6 Jan 2004 12:26:17 -0800 (PST) Received: from email06.aon.at (WARSL402PIP3.highway.telekom.at [195.3.96.75]) by mx1.FreeBSD.org (Postfix) with SMTP id 58E7143D39 for ; Tue, 6 Jan 2004 12:26:13 -0800 (PST) (envelope-from shoesoft@gmx.net) Received: (qmail 360956 invoked from network); 6 Jan 2004 20:26:11 -0000 Received: from m114p030.dipool.highway.telekom.at (HELO ?62.46.4.62?) ([62.46.4.62]) (envelope-sender ) by qmail6rs.highway.telekom.at (qmail-ldap-1.03) with SMTP for ; 6 Jan 2004 20:26:11 -0000 From: Stefan Ehmann To: Don Lewis In-Reply-To: <200401062002.i06K1v7E014699@gw.catspoiler.org> References: <200401062002.i06K1v7E014699@gw.catspoiler.org> Content-Type: text/plain; charset=iso-8859-1 Message-Id: <1073420779.1054.3.camel@shoeserv.freebsd> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 Date: Tue, 06 Jan 2004 21:26:19 +0100 Content-Transfer-Encoding: 8bit cc: current@FreeBSD.org Subject: Re: page fault panic tracked down (selwakeuppri()) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Tue, 06 Jan 2004 20:26:17 -0000 On Tue, 2004-01-06 at 21:01, Don Lewis wrote: > > #0 doadump () at /usr/src/sys/kern/kern_shutdown.c:240 > > #1 0xc04e5178 in boot (howto=256) at > > /usr/src/sys/kern/kern_shutdown.c:372 > > #2 0xc04e5507 in panic () at /usr/src/sys/kern/kern_shutdown.c:550 > > #3 0xc07eb648 in feed_vchan_s16 (f=0xc3967c00, c=0x0, b=0xc37d0000 "", > > count=2048, source=0xc3741500) at > > /usr/src/sys/dev/sound/pcm/vchan.c:80 > > It is somewhat worrysome that c is 0x0 here, since it should be the same > as channel in frame #4. Maybe a gdb oops? > > Print *src in this frame, the KASSERT is apparently failing because the > bufsize member of this structure is not the same as the count parameter. (kgdb) print *src $2 = {dev = 0xc37a8580, buf = 0xc3880c00 "", tmpbuf = 0xc3882000 "ÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­ÞÞÀ­Þ"..., bufsize = 688, maxsize = 688, dl = 0, rp = 0, rl = 0, hp = 0, total = 0, prev_total = 0, dmachan = 0, dir = 0, fmt = 268435472, spd = 44100, bps = 4, blksz = 344, blkcnt = 2, xrun = 0, flags = 0, dmamap = 0x0, dmatag = 0x0, buf_addr = 0, sel = {si_thrlist = {tqe_next = 0x0, tqe_prev = 0x0}, si_thread = 0x0, si_note = {slh_first = 0x0}, si_flags = 0}, name = "pcm0:play:0:secondary", '\0' } > > #4 0xc07e1c6d in sndbuf_feed (from=0xc3741500, to=0xc3741600, > > channel=0xc37a8880, feeder=0xc3967c00, count=3279164672) at > > feeder_if.h:60 > > Also, print *channel in this frame. I'd like to see what flags are set. (kgdb) print *channel $3 = {methods = 0xc377ec20, num = 0, pid = -1, refcount = 0, feeder = 0xc3967c00, align = 4, volume = 25700, speed = 44100, format = 268435472, flags = 12320, feederflags = 0, blocks = 0, direction = 1, interrupts = 224003, xruns = 1, bufhard = 0xc3741600, bufsoft = 0xc3741500, parentsnddev = 0xc37c0200, parentchannel = 0x0, devinfo = 0xc37a8738, dev = 0xc37a8580, name = "pcm0:play:0", '\0' , lock = 0xc37ba280, children = {slh_first = 0xc377ebf0}} gdb made problems again. When using add-symbol-file as described in the handbook backtrace was fine but couldn't debug anything (getting no stack). So I just copied the .ko.debug files to /boot/.ko - Hope this won't cause any problems.