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=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 01DEEC433E6 for ; Tue, 2 Mar 2021 07:09:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C974F64DF4 for ; Tue, 2 Mar 2021 07:09:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1574481AbhCBDqy (ORCPT ); Mon, 1 Mar 2021 22:46:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237864AbhCAVN0 (ORCPT ); Mon, 1 Mar 2021 16:13:26 -0500 Received: from sipsolutions.net (s3.sipsolutions.net [IPv6:2a01:4f8:191:4433::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD500C061788; Mon, 1 Mar 2021 13:12:45 -0800 (PST) Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.94) (envelope-from ) id 1lGpqH-00ARN0-Um; Mon, 01 Mar 2021 22:12:38 +0100 Message-ID: <2db8f779b4b37d4498cfeaed77d5ede54e429a6e.camel@sipsolutions.net> Subject: Re: Lockdep warning in iwl_pcie_rx_handle() From: Johannes Berg To: Jiri Kosina , Luca Coelho Cc: Heiner Kallweit , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org Date: Mon, 01 Mar 2021 22:12:21 +0100 In-Reply-To: (sfid-20210301_215846_256695_15E0D07E) References: (sfid-20210301_215846_256695_15E0D07E) Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.5 (3.36.5-2.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-malware-bazaar: not-scanned Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Jiri, > I am getting the splat below with Linus' tree as of today (5.11-rc1, > fe07bfda2fb). I haven't started to look into the code yet, but apparently > this has been already reported by Heiner here: > > https://www.spinics.net/lists/linux-wireless/msg208353.html > > so before I start digging deep into it (the previous kernel this > particular machine had is 5.9, so I'd rather avoid lenghty bisect for now > in case someone has already looked into it and has ideas where the problem > is), I thought I'd ask whether this has been root-caused elsewhere > already. Yeah, I'm pretty sure we have a fix for this, though I'm not sure right now where it is in the pipeline. It's called "iwlwifi: pcie: don't add NAPI under rxq->lock" but right now I can't find it in any of the public archives. johannes