linux-kernel - Re: 2.6.24-rc1-54866f032307063776b4eff7eadb131d47f9f9b4 fails to boot: kernel BUG at include/linux/scatterlist.h:49!

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <472C88E9.60103@s5r6.in-berlin.de>
Date:	Sat, 03 Nov 2007 15:42:49 +0100
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Torsten Kaiser <just.for.lkml@...glemail.com>
CC:	linux-kernel@...r.kernel.org,
	linux1394-devel@...ts.sourceforge.net,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: 2.6.24-rc1-54866f032307063776b4eff7eadb131d47f9f9b4 fails to
 boot: kernel BUG at include/linux/scatterlist.h:49!

Torsten Kaiser wrote:
> On 11/2/07, Stefan Richter <stefanr@...6.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.

> But I do not trust myself to fixing all
> the iterators correctly to convert this completely to the new API.

Since ieee1394 doesn't create chained s/g lists, we might even get away
with ieee1394's existing iterators.

(The other place where the 1394 stack deals with s/g lists is sbp2 where
we have to deal with what comes from the SCSI stack or the block layer.
But sbp2's s/g list handling is entirely unrelated to ieee1394's own
code for isochronous I/O and async streams, which eth1394 needs and
caused the bug.)
-- 
Stefan Richter
-=====-=-=== =-== ---=-
http://arcgraph.de/sr/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/