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=-7.5 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 10679C07E99 for ; Fri, 9 Jul 2021 16:06:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4B83613C5 for ; Fri, 9 Jul 2021 16:06:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229506AbhGIQIx (ORCPT ); Fri, 9 Jul 2021 12:08:53 -0400 Received: from dispatch1-us1.ppe-hosted.com ([67.231.154.164]:39370 "EHLO dispatch1-us1.ppe-hosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229487AbhGIQIw (ORCPT ); Fri, 9 Jul 2021 12:08:52 -0400 X-Greylist: delayed 435 seconds by postgrey-1.27 at vger.kernel.org; Fri, 09 Jul 2021 12:08:52 EDT Received: from dispatch1-us1.ppe-hosted.com (localhost.localdomain [127.0.0.1]) by dispatch1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id 29D02243962 for ; Fri, 9 Jul 2021 15:58:54 +0000 (UTC) X-Virus-Scanned: Proofpoint Essentials engine Received: from mx1-us1.ppe-hosted.com (unknown [10.110.51.172]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTPS id 12226A006D; Fri, 9 Jul 2021 15:58:53 +0000 (UTC) Received: from mail3.candelatech.com (mail2.candelatech.com [208.74.158.173]) by mx1-us1.ppe-hosted.com (PPE Hosted ESMTP Server) with ESMTP id CB0A014007C; Fri, 9 Jul 2021 15:58:52 +0000 (UTC) Received: from [192.168.100.195] (50-251-239-81-static.hfc.comcastbusiness.net [50.251.239.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail3.candelatech.com (Postfix) with ESMTPSA id 40B3513C2B3; Fri, 9 Jul 2021 08:58:52 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 mail3.candelatech.com 40B3513C2B3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=candelatech.com; s=default; t=1625846332; bh=kfC92NJcL8vib23XloHjcGRUxQ9uYE5h0l2TBCAMAMQ=; h=Subject:To:References:From:Date:In-Reply-To:From; b=pum9wF0+/4Fi+nz0pKV2tpSLtHW3dR3LNWqjHdBbLZibOHd7+rC4RK/aXdiaRaega Iae+zzkvsc/Oti46ujR2qyIL0O9fCh/TSCqsTIesphUBItUqf+es2hYmMGAs5aoc5a axiVqIiioXo6KgAMAIfTeeraeDIEI45VE8bZdBhA= Subject: Re: Kernel crash when scanning for APs in huge WiFi environment - Ath10K - ARMV7 - Linux 4.14.73 To: Vincent RUBY , "linux-wireless@vger.kernel.org" References: <1cef8054e4e447f2ba02d1de1e6afdf8@Cube-mail.cube.local> From: Ben Greear Organization: Candela Technologies Message-ID: Date: Fri, 9 Jul 2021 08:58:51 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-MDID: 1625846333-lD24sK-WlMP6 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On 7/9/21 8:48 AM, Vincent RUBY wrote: > Hi, > > I apologize in advance if I am writing at the wrong place. > We have developed a custom embedded board based on ARMV7. On the board there is a Telit WE866C3-P Wifi module (based on ath10k). > Linux : 4.14.73 (YOCTO/poky) > Microcontroller : SAMA5D27 > > The board is working perfectly in a normal Wifi environment (e.g., at office). > But when the board is put in a huge Wifi environment (e.g., 350 APs with 2 antennas each with more than 600 visible BSSIDS) the Linux kernel crashes when attempting to connect to a Wifi network using wpa_supplicant. > When the Wifi antenna is attenuated with some electromagnetic obstacle (e.g., hand or metallic shield), the board connects without any problem. > > The problem is the same when running a scan from wpa_cli . > > Do you have any idea where I can find some clue to resolve this issue? > > Many thanks in advance ! > > VinceCube > Please show the details of the kernel crash. And either way, answer is probably to try more recent kernel and see if problem is already fixed. Thanks, Ben -- Ben Greear Candela Technologies Inc http://www.candelatech.com