[Xenial][PATCH 0/1] net: better skb->sender_cpu and skb->napi_id cohabitation

leann.ogasawara at canonical.com leann.ogasawara at canonical.com
Thu Mar 16 04:21:53 UTC 2017

From: Leann Ogasawara <leann.ogasawara at canonical.com>

== Xenial SRU ==
BugLink: http://bugs.launchpad.net/bugs/1673303

We've tried to roll out new firewalls and had to revert back when the
new firewalls almost immediately hung after cutover.

At first we thought it was hardware issues, but after we reproduced it
on 4 different firewalls, we realised it was more likely to be a
problem with the Xenial kernel.

We think we're running into something similar to:


We have had success testing the following patch.  We've just migrated
four firewalls that are running with a patched kernel. Previously two
of them would have survived for less than 2 minutes, both have now been
running in production for over an hour.  Please consider the following
patch for a Xenial SRU:


Eric Dumazet (1):
  net: better skb->sender_cpu and skb->napi_id cohabitation

 include/linux/skbuff.h |  3 ---
 net/core/dev.c         | 33 ++++++++++++++++-----------------
 2 files changed, 16 insertions(+), 20 deletions(-)


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