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=-0.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable 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 3C2DDC65BAE for ; Sat, 1 Dec 2018 02:27:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0005E2082F for ; Sat, 1 Dec 2018 02:27:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="S8/9do46" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0005E2082F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726895AbeLANig (ORCPT ); Sat, 1 Dec 2018 08:38:36 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:35700 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726245AbeLANig (ORCPT ); Sat, 1 Dec 2018 08:38:36 -0500 Received: by mail-pf1-f195.google.com with SMTP id z9so3689212pfi.2 for ; Fri, 30 Nov 2018 18:27:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=kXcO7SxMiWUYuTHTZUP7IvQYRbDb/BJiQKAlC9Lz5vY=; b=S8/9do46O8WuuaeptBdbOBsXY1E/KgwrGX1/cHI9mc+JsAx+n9aMnIJM6SL7wyUJm0 B5UapgbZ/39KBGsA4rLwj/QPo6XAgOgj++yjua7z13X+kHaJ/7zyUJYFckQvXxXBCECh CR+Ttvrf8DP6Xs013qvy0BUD6Pb84GXyi8OWU= 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:in-reply-to:user-agent; bh=kXcO7SxMiWUYuTHTZUP7IvQYRbDb/BJiQKAlC9Lz5vY=; b=Q7yvdtyF+9PUwe/SJBcE3x8Gk3Ot7SWvveVuF+QwfZi0OmNKAwfmgiHQuXNlADXT1s TYpZkyRvAEgJPmzmjyOU+0N24TSHYYB9CADjGp88mEdNFheYxwWExg3yKUqIEuw2HM5r Z7w0H1BeyB+M9lY/a1CJOGyINKnzlmGGxeD1RtcjkM2lByT75jojV7s3ncNcQh5CQ/sm nb3dDEw0zahIf70xq44aJhMoh2owzYpyZgv7e7Z3PwGhwf5ivaN/mvZFHLYXgAPkrQp/ xkmUfW8BlTx4uS8Oxcrwauk+9HyMWW9DzpX3X0kS4nvwlFDjtUKaKEZVt2d6qBBWKGlc uq2Q== X-Gm-Message-State: AA+aEWZWNt5bj+tj1w/wzyZVKXokvEQg5xtxT4yyAKBYNZ46HQ8GwGPQ 5eLaVC3HAYeAeaf+oMFYKH9Ebg== X-Google-Smtp-Source: AFSGD/V6fyefkK+eHATdKcPNHYKSzN5ASWHGjZSDzXkebPRuC5h2WiZrst7FDyiMdK71L/HcrnIuSg== X-Received: by 2002:a63:db02:: with SMTP id e2mr6774601pgg.419.1543631233672; Fri, 30 Nov 2018 18:27:13 -0800 (PST) Received: from google.com ([2620:15c:202:1:534:b7c0:a63c:460c]) by smtp.gmail.com with ESMTPSA id x19sm10745926pfk.14.2018.11.30.18.27.12 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 30 Nov 2018 18:27:12 -0800 (PST) Date: Fri, 30 Nov 2018 18:27:11 -0800 From: Brian Norris To: Ganapathi Bhat Cc: Kalle Valo , "linux-kernel@vger.kernel.org" , Amitkumar Karwar , Nishant Sarmukadam , Xinming Hu , "linux-wireless@vger.kernel.org" , "stable@vger.kernel.org" Subject: Re: [EXT] [4.20 PATCH] Revert "mwifiex: restructure rx_reorder_tbl_lock usage" Message-ID: <20181201022710.GA237752@google.com> References: <20181130175957.167031-1-briannorris@chromium.org> <2cbb1f04ef8545ad9eaf3d7551a5dc03@SC-EXCH02.marvell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2cbb1f04ef8545ad9eaf3d7551a5dc03@SC-EXCH02.marvell.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 30, 2018 at 07:04:49PM +0000, Ganapathi Bhat wrote: > > This was clearly not tested well at all. I simply performed 'wget' in a loop and > > it fell over within a few seconds. > Sorry. I had run a iperf test before sharing the patch (no regression observed). > It looks I failed to get this right for second time I will check this. Were you running on an 11n/ac network? IIUC, the particular code that's being blamed is only active with 11n+ features. You might also make sure you test with stuff like lockdep enabled, as that gives nice warnings and can even preemptively warn about potential problems before they even occur, if you use the right settings. (Some lockdep configurations can slow things down significantly, BTW.) Brian