Re: Hang: sky2/DMAR (was [PATCH] sky2: Fix WARNING: atlib/dma-debug.c:902 check_sync)

From: Michael Breuer
Date: Sat Jan 23 2010 - 20:53:54 EST

On 1/23/2010 6:21 PM, Jarek Poplawski wrote:
On Fri, Jan 22, 2010 at 06:50:21PM -0500, Michael Breuer wrote:
When the packets were dropped, there was a different sequence in the
log - DISCOVER/OFFER repeated. The "normal" is that the sequence
appeared correct and complete - DISCOVER/OFFER/REQUEST/ACK - or
INFORM/ACK (vs. INFORM repeatedly sans ACK) as the case may be.
Anyway, I'd be intersted if the switch matters here.

Plus one more test: could you try to load sky2 with the parameter:
"copybreak=1" (the rest as in any recent test, which gave you dmar
errors; any switch).

Jarek P.
Ok - will try with and without the copybreak=1 after I'm done bisecting 2.6.33 rc5 for something unrelated (it'll take a couple of days for each unless a crash occurs in less that 48 hours).
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