From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Alistair John Strachan <alistair@devzero.co.uk>
Cc: Francois Romieu <romieu@fr.zoreil.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: 2.6.24-rc3, 4GB RAM, swiotlb, r8169, out of space
Date: Sun, 25 Nov 2007 00:39:10 +0000 [thread overview]
Message-ID: <20071125003910.3e58e3b3@the-village.bc.nu> (raw)
In-Reply-To: <200711242344.49958.alistair@devzero.co.uk>
> when these messages appear, removing r8169 would appear to be key. Indeed, if
> there is no significant libata activity, the problem still occurs on the NIC
> within approximately the same amount of transfer.
You seem to have a leak, which actually isn't suprising
rtl8169_xmit_frags allocates a set of maps for a fragmented packet
rtl8169_start_xmit allocates a buffer
When we finish the transit we free the main buffer (always using skb->len
when sometimes its skb->headlne. We don't seem to free the fragment
buffers at all.
Looks like the unmap path for fragmented packets is broken with any kind
of iommu
Alan
next prev parent reply other threads:[~2007-11-25 0:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-24 23:44 Alistair John Strachan
2007-11-25 0:25 ` Francois Romieu
2007-11-25 1:27 ` Francois Romieu
2007-11-25 2:02 ` Alistair John Strachan
2007-11-25 1:48 ` Alistair John Strachan
2007-11-25 0:39 ` Alan Cox [this message]
2007-11-25 1:15 ` Francois Romieu
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