On Mon, Aug 10, 2015 at 2:10 PM, Jovi Zhangwei <j...@cloudflare.com> wrote: > > 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? Previous reports ( https://patchwork.ozlabs.org/patch/480882/ ) have shown that this gets rid of at least one source of the warning. So that would provide a useful data point. Separately, you could also try the attached patch. This is against 3.14.39. It tries to attack a different possible source of this warning. Please let us know if that patch helps. Thanks! neal
0001-RFC-for-tests-on-v3.14.39-tcp-resegment-skbs-that-we.patch
Description: Binary data
