Re: USB/DVB - Old Technotrend TT-connect S-2400 regression trackeddown

From: David
Date: Tue May 26 2009 - 14:45:28 EST

Pete Zaitcev wrote:
> On Mon, 25 May 2009 13:25:55 +0100, David <david@xxxxxxxxxxxxxxx> wrote:
> I suppose so. I misunderstood how this worked. I guessed that the
> DMA API debugging was the culprit because its introduction coincided
> with the recent onset of this oops.
> Although usbmon does essentially illegal tricks to look at data
> already mapped for DMA, the code used to work for a few releases.
> Bisecting may help. I cannot be sure of it though, and it's
> going to take a lot of reboots.
> Unfortunately, although I have an Opteron, the issue does not
> occur here, so I'm at a loss for the moment. But I'll have to
> tackle it somehow. Not sure how though. Any suggestions are welcome.
> -- Pete

I've been doing a bit of random rebooting (I don't really have time to
do a full bisect), and can reproduce the usbmon panic on this machine
back to 2.6.24.. so it certainly hasn't appeared that recently.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at