Hi Grant,

Thanks for testing it.  I will try to repost the patch.

Thanks,
Martin

On Tue, Sep 01, 2015 at 04:02:33PM -0700, Grant Zhang wrote:

Hi Martin,

I did try out your v2 patch on our production server and can confirm that
the patch gets rid of the WARN_ON trace.

I would really like to see the issue been fixed by upstream(and backported
to kernel longterm tree 3.14)--either by this patch or something else. Is
there a plan for this?

Thanks,

Grant

On 12/08/2015 20:45, Martin KaFai Lau wrote:

quoted

On Mon, Aug 10, 2015 at 02:35:37PM -0400, Neal Cardwell wrote:

quoted

On Mon, Aug 10, 2015 at 2:10 PM, Jovi Zhangwei [off-list ref] wrote:

quoted

Ping?

We saw a lot of this warnings in our production system. It would be
great appreciate if someone can give us the fix on this warnings. :)

What is your net.ipv4.tcp_mtu_probing setting? If 1, have you tried
setting it to 0?

Hi Jovi, If setting net.ipv4.tcp_mtu_probing=0 helps, can you give the
patch we posted earlier a try: https://urldefense.proofpoint.com/v1/url?u=https://patchwork.ozlabs.org/patch/481609/&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=%2Faj1ZOQObwbmtLwlDw3XzQ%3D%3D%0A&m=wYNHn6ACXUwYfYQpS2rAg%2BLrj8CrcyDTTr3Fx5SFoWg%3D%0A&s=51041d4fd18fa1568b4b46b683640d8239be657c50af324621ba9a4e8c9a96b6
It is the same patch that I pointed out earlier. You can click
on the download link.

We are currently using a similar patch while keeping net.ipv4.tcp_mtu_probing=1.

Thanks,
--Martin
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html