netdev - Re: [Bugme-new] [Bug 38102] New: BUG kmalloc-2048: Poison overwritten

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Message-ID: <1309839663.2720.21.camel@edumazet-laptop>
Date:	Tue, 05 Jul 2011 06:21:03 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Alexey Zaytsev <alexey.zaytsev@...il.com>
Cc:	Michael Büsch <m@...s.ch>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, Gary Zambrano <zambrano@...adcom.com>,
	bugme-daemon@...zilla.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Pekka Pietikainen <pp@...oulu.fi>,
	Florian Schirmer <jolt@...box.org>,
	Felix Fietkau <nbd@...nwrt.org>, Michael Buesch <mb@...sch.de>
Subject: Re: [Bugme-new] [Bug 38102] New: BUG kmalloc-2048: Poison
 overwritten

Le mardi 05 juillet 2011 à 05:44 +0200, Eric Dumazet a écrit :

> Maybe we should do instead a fast dequeue of packets (recycling them
> instead of pushing them to upper stack) in case too many packets are
> ready to be delivered, and always make sure NIC has a reserve of
> available buffers for DMA accesses, before it can assert ISTAT_RFO
> 
> 

Another way would be to add Explicit Congestion Notification when too
many packets are received in a burst, but unfortunately not enough TCP
flows are ECN ready :)



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