From owner-freebsd-alpha Fri Jan 5 12:14:24 2001 From owner-freebsd-alpha@FreeBSD.ORG Fri Jan 5 12:14:21 2001 Return-Path: Delivered-To: freebsd-alpha@freebsd.org Received: from front5m.grolier.fr (front5m.grolier.fr [195.36.216.55]) by hub.freebsd.org (Postfix) with ESMTP id A358937B400 for ; Fri, 5 Jan 2001 12:14:20 -0800 (PST) Received: from nas1-197.mea.club-internet.fr (nas1-197.mea.club-internet.fr [195.36.139.197]) by front5m.grolier.fr (8.9.3/No_Relay+No_Spam_MGC990224) with ESMTP id VAA18326; Fri, 5 Jan 2001 21:14:09 +0100 (MET) Date: Fri, 5 Jan 2001 20:13:44 +0100 (CET) From: =?ISO-8859-1?Q?G=E9rard_Roudier?= X-Sender: groudier@linux.local To: Matthew Jacob Cc: Yoriaki FUJIMORI , freebsd-alpha@FreeBSD.ORG Subject: Re: bus_dmamap_load In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, 4 Jan 2001, Matthew Jacob wrote: > On Thu, 4 Jan 2001, [ISO-8859-1] G=E9rard Roudier wrote: >=20 > >=20 > >=20 > > On Thu, 4 Jan 2001, Matthew Jacob wrote: > >=20 > > > The trick now is to figure out who is passing a bogus value > > > to bus_dmamap_load. The value of buf_len (0xfaae8000) looks > > > suspicious. > > >=20 > > > Since I hve essentially the same h/w (except for the symbios card) in= a PC164 > > > that runs 4.2 just fine, I would suspect the sym driver. But needs to= happen > > > is some better debugging for this. I take it that you aren't really r= unning on > > > this h/w yet (i.e, you haven't been able to install)? > >=20 > > Btw, you missed the `de' driver that also performs bus_dmamap_load() on > > mbuf's as a possible candidate. >=20 > That's why I said 'possibly'.... And because pretty much the sole differe= nce > between his PC164 and mine is the Symbios card..... Hmmm... May-be `sym' (or the Symbios card) is related to the problem, but suspecting it in a few seconds looked to me as relevant as suspecting the moon to be the cause of night.;-) There are probably much other differences between the _actual_ hardware config + software config + use pattern of the 2 systems. > > Would be interesting to shut the `de' board and to give a try with a > > different network board long enough to see if it makes difference. >=20 >=20 > No, no, no, since he's actually running with this, the smart thing to do = is to > put a panic to DDB to get a traceback, i.e.: >=20 > options DDB >=20 > and change the printf in alpha/busdma_machdep.c to a panic. Ok. This will give some infos. G=E9rard. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message