From: Andrew Morton <akpm@linux-foundation.org>
To: netdev@vger.kernel.org
Cc: bugzilla-daemon@bugzilla.kernel.org, bugme-new@lists.osdl.org,
bugme-daemon@bugzilla.kernel.org, pmjdebruijn@pcode.nl,
Jay Cliburn <jcliburn@gmail.com>,
Chris Snook <chris.snook@gmail.com>,
Jie Yang <jie.yang@atheros.com>
Subject: Re: [Bugme-new] [Bug 27712] New: atl1e data corruption (via NFS over TCP)
Date: Fri, 28 Jan 2011 14:36:35 -0800 [thread overview]
Message-ID: <20110128143635.ad6f1b3f.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-27712-10286@https.bugzilla.kernel.org/>
(switched to email. Please respond via emailed reply-to-all, not via the
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On Fri, 28 Jan 2011 09:48:13 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=27712
>
> Summary: atl1e data corruption (via NFS over TCP)
> Product: Drivers
> Version: 2.5
> Kernel Version: 2.6.38-rc2
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: high
> Priority: P1
> Component: Network
> AssignedTo: drivers_network@kernel-bugs.osdl.org
> ReportedBy: pmjdebruijn@pcode.nl
> Regression: No
>
>
> With the following device (very common on ASUS hardware):
>
> Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller
>
> With PCI ID:
>
> 1969-1026-b0-00-1043-14f5
> http://pci-ids.ucw.cz/read/PC/1969/1026
>
> We get data corruption when transferring data via NFS over TCP, while data
> transfered via NFS over UDP seems to be fine.
>
> We tested this by md5summing large files (100MB+) over NFS.
>
> Turning off all offload features via ethool does not help either. However the
> RX checksum offload can't be turned off individually, but _seems_ to be turned
> off when the TX checksum offload is turned off.
>
> As indicated when transferring data via UDP the problem disappears, and the
> md5sums are correct again.
>
> The above would suggestion something is possibly wrong the RX checksum offload?
>
> Is there any way to force the RX checksum offload off?
>
parent reply other threads:[~2011-01-28 22:37 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <bug-27712-10286@https.bugzilla.kernel.org/>]
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