On Fri, Aug 02, 2019 at 09:58:12PM +0200, Bernd wrote: > 2019-08-02 21:14 GMT+02:00, Neal Cardwell <ncardw...@google.com>: > > What's the exact kernel version you are using? > > It is the RHEL errata kernel 3.10.0-957.21.3.el7 (rhsa-2019:1481), i > need to check if there is a newer one.
FWIW, this one doesn't have the patch below. Marcelo > > > Eric submitted a patch recently that may address your issue: > > tcp: be more careful in tcp_fragment() > > > > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=b617158dc096709d8600c53b6052144d12b89fab > > > > Would you be able to test your workload with that commit > > cherry-picked, and see if the issue still occurs? > > It only happens on a customer system in production up to now, so most > likely not. > > > That commit was targeted to many stable releases, so you may be able > > to pick up that fix from a stable branch. > > The only thing which is a bit strange, this is a Java client, and I am > pretty sure we don’t set a small SO_SNDBUF, if anything it is > increased (I need to verify that). > > Not to worry, I guess I can now with your helpful pointer sort that > out with Redhat. > > gruss > Bernd >
