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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B457C433EF for ; Mon, 22 Nov 2021 18:55:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231307AbhKVS6v (ORCPT ); Mon, 22 Nov 2021 13:58:51 -0500 Received: from mx4.wp.pl ([212.77.101.11]:5014 "EHLO mx4.wp.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233806AbhKVS6s (ORCPT ); Mon, 22 Nov 2021 13:58:48 -0500 Received: (wp-smtpd smtp.wp.pl 25075 invoked from network); 22 Nov 2021 19:55:38 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=1024a; t=1637607338; bh=/aiVtgsJvQemMMgznBzEJcslTpOzV+/MTlG713p8LlM=; h=From:To:Cc:Subject; b=NsbReASeJX5R49dEDoB5tanS0nFYy27Cv9UKMSGpymsgX2EzLDZeBws60BSuu8I4T uIIfk7fmNAxvKRTq/B6nlYA/LwKMHC+nxLSow8aAfBKz7txKzkpTB3CTAga2mv1bTR ulZUZaMxw0yLFciF9SROlhgq0hqYCegLZOlYPGQg= Received: from 89-74-82-70.dynamic.chello.pl (HELO localhost) (stf_xl@wp.pl@[89.74.82.70]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with ECDHE-RSA-AES256-GCM-SHA384 encrypted SMTP for ; 22 Nov 2021 19:55:38 +0100 Date: Mon, 22 Nov 2021 19:55:37 +0100 From: Stanislaw Gruszka To: Thorsten Leemhuis Cc: Robert W , Helmut Schaa , linux-wireless@vger.kernel.org, "regressions@lists.linux.dev" Subject: Re: Bug/Regression - Ralink RT2800 kernel deference issue since kernel 5.14 Message-ID: <20211122185515.GA289958@wp.pl> References: <60b9dbe3-852b-9e63-2857-0264d7093930@leemhuis.info> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <60b9dbe3-852b-9e63-2857-0264d7093930@leemhuis.info> X-WP-MailID: a664ab15c8886e3e672fadde8f9c2a9a X-WP-AV: skaner antywirusowy Poczty Wirtualnej Polski X-WP-SPAM: NO 0000001 [kXIW] Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On Sun, Nov 21, 2021 at 02:38:02PM +0100, Thorsten Leemhuis wrote: > Hi, this is your Linux kernel regression tracker speaking. > > CCing regression mailing list, which should be in the loop for all > regressions, as explained here: > https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html > > Also adding Helmut and Stanislaw (or just a different of his > addresses?), as afaics nothing happened since the report. FYI: stf_xl@wp.pl is the only valid public e-mail address currently used by me. > On 12.11.21 22:21, Robert W wrote: > > > > I have recently tried to upgrade a system to run the 5.14 kernel and > > noticed that I was getting hangs on the system which seem to relate to > > this wireless dongle which I am running hostapd against to provide a > > small AP. Since that time kernel 5.15 was released and I have tested > > that kernel as well and the problem persists.  The issue sometimes > > occurs within an hour and other times it takes a few hours. I have tried > > to narrow down what is causing the issue.  I thought it might be a > > change elsewhere outside the mac80211/driver area so I tried to run the > > wireless backports 5.15-rc6 on top of the last stable kernel of 5.13 so > > as to have the smallest number of changes on the system. The backports > > crashes with the same error.  I have included below the netconsole > > output and the gdb of the kernel module in question. The capture was > > from when I was using the backports, but the error  is the same.  I hope > > the pastebins are okay to use on the list.  I did try to get some > > assistance on linux-wireless IRC and some one asked for the outputs I > > had for the information so I am reusing them here. > > > > The following pastebin is the data sent to a netconsole instance. > > > > https://pastebin.com/UxRrTtUh > > (gdb) list *(rt2x00queue_create_tx_descriptor+0x176) > > 0x37e6 is in rt2x00queue_create_tx_descriptor (/home/robert/backport/backports-5.15-rc6-1/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c:324). > > 319 */ > > 320 if (sta && txdesc->u.ht.mcs > 7 && > > 321 sta->smps_mode == IEEE80211_SMPS_DYNAMIC) > > 322 __set_bit(ENTRY_TXD_HT_MIMO_PS, &txdesc->flags); > > 323 } else { > > 324 txdesc->u.ht.mcs = rt2x00_get_rate_mcs(hwrate->mcs); > > 325 if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) > > 326 txdesc->u.ht.mcs |= 0x08; > > 327 } > > 328 Looking at the mailing list archives, seems Felix already provided patch for this. Hopefully patch fixes the problem. However if changes in the rt2x00 drivers are needed further, I can look at this. Regards Stanislaw