Bug#415068: I can reproduce #415068 on a UltraSparc 5 over USB serial adapter
On Wed, Dec 12, 2007 at 09:58:43PM +0100, Axel Beckert wrote:
> found 415068 2.6.18.dfsg.1-13etch5
> found 415068 2.6.18.dfsg.1-13etch4
> thanks
>
> Hi,
>
> I'm currently investigating an UltraSparc 5 which didn't come up after
> the recent kernel update from 2.6.18.dfsg.1-13etch4 to
> 2.6.18.dfsg.1-13etch5, but it booted without problems after being
> moved to the office for investigation.
>
> It initially had not serial console configured, but now has /dev/ttyS1
> with 9600 8N1. (So this bug is probably not responsible for the
> initial hang on reboot because of which I started investigating the
> machine.)
>
> I tried to connect over one of these ugly USB to serial
> adapters. (Also to test the adapter since I will need it if I don't
> want to carry the Sparc to the office again next time.) And while
> experimenting a little bit with the baud rates (9600 8N1 as configured
> and expected on the Sparc lost about every third character), I
> suddenly got a kernel panic on the VGA monitor (which I connected
> because the machine stopped pinging).
>
> I can reproduce this kernel panic with the following command on the
> laptop with the USB to serial adapter connected to ttyS1 on the Sparc:
>
> screen /dev/ttyUSB0 2400,cs8<Enter><Enter>
>
> If I keep the screen running while rebooting, just typing a single
> <Enter> into the screen, the box panics.
>
> Here's a (manual!) transcript of the Sparc's output:
Does this error still occur with the Lenny kernel?
Cheers,
Moritz
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