From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: Soft lockup in inet_put_port on 4.6 Date: Thu, 08 Dec 2016 16:30:32 -0800 Message-ID: <1481243432.4930.145.camel@edumazet-glaptop3.roam.corp.google.com> References: <1481231024.1911284.813071977.72AF4DEE@webmail.messagingengine.com> <1481233016.11849.1@smtp.office365.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Hannes Frederic Sowa , Tom Herbert , Linux Kernel Network Developers To: Josef Bacik Return-path: Received: from mail-pg0-f67.google.com ([74.125.83.67]:36799 "EHLO mail-pg0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753870AbcLIAbe (ORCPT ); Thu, 8 Dec 2016 19:31:34 -0500 Received: by mail-pg0-f67.google.com with SMTP id x23so297647pgx.3 for ; Thu, 08 Dec 2016 16:31:34 -0800 (PST) In-Reply-To: <1481233016.11849.1@smtp.office365.com> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 2016-12-08 at 16:36 -0500, Josef Bacik wrote: > We can reproduce the problem at will, still trying to run down the > problem. I'll try and find one of the boxes that dumped a core and get > a bt of everybody. Thanks, OK, sounds good. I had a look and : - could not spot a fix that came after 4.6. - could not spot an obvious bug. Anything special in the program triggering the issue ? SO_REUSEPORT and/or special socket options ? Thanks.