NFS/TCP/IPv6 acting strangely in 4.2

Hi Damien,
 
 On mer., sept. 16 2015, Damien Th?bault [off-list ref] wrote:

On Fri, 2015-09-11 at 12:38 +0100, Russell King - ARM Linux wrote:

quoted

I have a recent Marvell Armada 388 board here which uses the mvneta
driver.  I'm seeing some weird effects with NFS with it acting as a
client.

Hello,

I'm upgrading a Marvelle Armada 370 board using the mvneta driver from
4.0 to 4.2 and noticed issues with NFS booting.
Basically, most of the time init returns with an error code, or
programs segfault or throw illegal instructions.

Since it worked fine on 4.0 I bisected until I found commit
a84e32894191cfcbffa54180d78d7d4654d56c20 "net: mvneta: fix refilling
for Rx DMA buffers".

If I revert this commit, everything seems to get back to normal.
Could you try it ? The two issues look very similar.

Actually there was a bug with this commit, but a fix had been submitted
and accepted yesterday, you can find him here:
https://patchwork.ozlabs.org/patch/518111/.

Thanks,

Gregory

Regards

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com

On Wed, 2015-09-16 at 09:15 +0200, Gregory CLEMENT wrote:

quoted

Since it worked fine on 4.0 I bisected until I found commit
a84e32894191cfcbffa54180d78d7d4654d56c20 "net: mvneta: fix
refilling
for Rx DMA buffers".

If I revert this commit, everything seems to get back to normal.
Could you try it ? The two issues look very similar.

Actually there was a bug with this commit, but a fix had been
submitted
and accepted yesterday, you can find him here:
https://patchwork.ozlabs.org/patch/518111/.

Hello, this indeed fixes the issue for me, thanks.
-- 
Damien Th?bault
R&D Engineer
VITEC

T. +33 1 46 73 06 06
F. +33 9 59 85 99 92
E. damien.thebault at vitec.com
http://www.vitec.com