Date: Sat, 3 Nov 2007 17:04:05 +0100
From: Jens Axboe <jens.axboe@oracle.com>
To: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Torsten Kaiser <just.for.lkml@googlemail.com>,
       linux-kernel@vger.kernel.org, linux1394-devel@lists.sourceforge.net
Subject: Re: 2.6.24-rc1-54866f032307063776b4eff7eadb131d47f9f9b4 fails to  boot: kernel BUG at include/linux/scatterlist.h:49!
Message-ID: <20071103160404.GH28340@kernel.dk>
References: <64bb37e0711021503x4844b905yba1e9a681c4e788a@mail.gmail.com> <472BA567.8040301@s5r6.in-berlin.de> <64bb37e0711030614q4be3a2b6j5d3c55b26cb07030@mail.gmail.com> <472C88E9.60103@s5r6.in-berlin.de>
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On Sat, Nov 03 2007, Stefan Richter wrote:
> Torsten Kaiser wrote:
> > On 11/2/07, Stefan Richter <stefanr@s5r6.in-berlin.de> wrote:
> >> To which extent do you need IEEE 1394 drivers?
> > 
> > Using eth1394 as primary network connection on this computer.
> > So switching to the new stack is currently not an option,
> 
> That's right.
> 
> > Looking that calltrace upwards, it seems replacing the
> > memset(dma->sglist,...) with sg_init_table(...) would fix the BUG_ON()
> > as that inits the SG_MAGIC.
> 
> Yes, this should be the first thing to be fixed.

It's probably enough. Only if you use chaining do you need to convert to
using for_each_sg() and so on.

-- 
Jens Axboe

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