From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B44CEC32753 for ; Wed, 14 Aug 2019 14:41:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 860D5208C2 for ; Wed, 14 Aug 2019 14:41:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="dvhgdzV2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727110AbfHNOlh (ORCPT ); Wed, 14 Aug 2019 10:41:37 -0400 Received: from mail-qk1-f193.google.com ([209.85.222.193]:39198 "EHLO mail-qk1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726157AbfHNOlh (ORCPT ); Wed, 14 Aug 2019 10:41:37 -0400 Received: by mail-qk1-f193.google.com with SMTP id 125so9669957qkl.6 for ; Wed, 14 Aug 2019 07:41:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=wuELjlzk0W97on7ppjrVzsjRvp67peBZ1mBSicXJi+s=; b=dvhgdzV2fXm8SD8NEIlAG1bkBfXR/PV9D6iB725DTFxqBBFW1N15u5P1ZfyIdAJTiI B5CyM53w8f+QjSK6ayq0a92LFPbj13/i4ReJ4L4vMdRjlrmTIfeDhHK3MFAXam7b1qHv VYRT0K01nA8ceU+voZ3+R04zNIHuSaEOEUthnhIaFcRgMi4T/bmRVF4h0B3zgAWuVhMT FQ1MAcNXbEAQ36l959ZgRxd4LlMJ0KQYz44KmTzg1cgR19F+e040nw/F2Mmk+lEu6Jo/ Gaym2mxodguaFqHdlcV05Z1CYhuouWBejZyV7CEQJF9aPuZY8NcWaok4dRr4o6KcRa3Z 0gBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to:user-agent; bh=wuELjlzk0W97on7ppjrVzsjRvp67peBZ1mBSicXJi+s=; b=g8AEdiL79p3/xfEPK2Xu3qAvc9g21y/CoMJJuUH0i3MZMQ4gJrYT/i7iKErPL01xuS WIfpP4Lzy6w/7yUsKNZNk0yzmTBD5ewLozjg1s3NCPxi5IDwfBE0MwJfxGuYEOUJEZ3r p4tedEiMneHAedNsettR7Mjiq19mUD+TOfuo2U52ctENGVP3uImX9MmYQ8bgzezpd/uq dJw3OQxDIgxeZ9/z+kghMz37V/IZB67nu/figO7CXjtUR/voDMJE+dmR1Kxkn/aayktZ Lj0ee4VCZb5j4X7mOl0YCv7s/rwjbFxtIZt30X1FujXjwGRA2FKqFBmQJmj39Qle/XVc KXFw== X-Gm-Message-State: APjAAAUkQoPALV2Lh4rjpO+ZQBG/jUxGNj7fBxkXCbKOubUOW38oWTU2 YtKp875UE+pTYoIU+JvUr+7VQp2j X-Google-Smtp-Source: APXvYqwhfRN/HAkCiX/fGLnouYU9IZtajSjxtdxkyW0lfk1n/vnP5gruNm8JXlRRqQYoYJPSjEgXEw== X-Received: by 2002:a37:680e:: with SMTP id d14mr38938770qkc.207.1565793696023; Wed, 14 Aug 2019 07:41:36 -0700 (PDT) Received: from localhost.localdomain ([177.220.172.117]) by smtp.gmail.com with ESMTPSA id b1sm23535668qkk.8.2019.08.14.07.41.34 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 14 Aug 2019 07:41:35 -0700 (PDT) Received: by localhost.localdomain (Postfix, from userid 1000) id CAE49C0A43; Wed, 14 Aug 2019 11:41:32 -0300 (-03) Date: Wed, 14 Aug 2019 11:41:32 -0300 From: Marcelo Ricardo Leitner To: Bernd Cc: Neal Cardwell , netdev , edumazet@google.com Subject: Re: [PATCH net 2/4] tcp: tcp_fragment() should apply sane memory limits Message-ID: <20190814144132.GA2869@localhost.localdomain> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Fri, Aug 02, 2019 at 09:58:12PM +0200, Bernd wrote: > 2019-08-02 21:14 GMT+02:00, Neal Cardwell : > > 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 >