Date: Fri, 5 Jan 2001 20:13:44 +0100 (CET) From: =?ISO-8859-1?Q?G=E9rard_Roudier?= <groudier@club-internet.fr> To: Matthew Jacob <mjacob@feral.com> Cc: Yoriaki FUJIMORI <fujimori@grafin.fujimori.cache.waseda.ac.jp>, freebsd-alpha@FreeBSD.ORG Subject: Re: bus_dmamap_load Message-ID: <Pine.LNX.4.10.10101052002060.2363-100000@linux.local> In-Reply-To: <Pine.LNX.4.21.0101041642370.16662-100000@zeppo.feral.com>
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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
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