Re: [Bugme-new] [Bug 7951] New: ESP DMA error

Re: [Bugme-new] [Bug 7951] New: ESP DMA error

[Andrew Morton]

On Tue, 6 Feb 2007 09:54:59 -0800
bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=7951
> 
>            Summary: ESP DMA error
>     Kernel Version: 2.6.20
>             Status: NEW
>           Severity: normal
>              Owner: io_scsi@kernel-bugs.osdl.org
>          Submitter: mt1@systella.fr
> 
> 
> Most recent kernel where this bug did *NOT* occur: 2.6.19.1
> Distribution: debian testing
> Hardware Environment: SparcSTATION 20 smp
> Software Environment:
> Problem Description: ESP driver returns some DMA errors and hard drives are
> disconected.
> 
> Steps to reproduce: build a 2.6.20 kernel with ESP driver and do for example an
> apt-get dist-upgrade to obtain a heavy traffic on internal SCSI bus.
> 

Apparently a recent regression.

Re: [Bugme-new] [Bug 7951] New: ESP DMA error

[David Miller]

From: Andrew Morton <akpm@linux-foundation.org>
Date: Tue, 6 Feb 2007 13:29:17 -0800

> Apparently a recent regression.

It's on sparc32 (and SMP on top of that, scary) which is only lightly
maintained, so it could be anything.  It would be interesting if
running a uniprocessor kernel made the problem go away.

I would only be concerned at the scsi layer level if you see a sparc64
report like this.