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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 4754AC433B4 for ; Mon, 26 Apr 2021 19:38:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E8E161158 for ; Mon, 26 Apr 2021 19:38:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239868AbhDZTjR (ORCPT ); Mon, 26 Apr 2021 15:39:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236132AbhDZTjN (ORCPT ); Mon, 26 Apr 2021 15:39:13 -0400 Received: from sipsolutions.net (s3.sipsolutions.net [IPv6:2a01:4f8:191:4433::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36FB5C061574 for ; Mon, 26 Apr 2021 12:38:31 -0700 (PDT) Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.94) (envelope-from ) id 1lb73s-000Mp5-Ue; Mon, 26 Apr 2021 21:38:29 +0200 Message-ID: <54debab9a79df628cff86a637dde13c281001578.camel@sipsolutions.net> Subject: Re: [BISECTED] 5.12 hangs at reboot From: Johannes Berg To: Harald Arnesen , Linus Torvalds Cc: Linux Kernel Mailing List Date: Mon, 26 Apr 2021 21:38:28 +0200 In-Reply-To: <34d778fa-343f-912f-2fd7-a8ba49bd1b95@skogtun.org> References: <09464e67-f3de-ac09-28a3-e27b7914ee7d@skogtun.org> <34d778fa-343f-912f-2fd7-a8ba49bd1b95@skogtun.org> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.38.4 (3.38.4-1.fc33) MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-malware-bazaar: not-scanned Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2021-04-26 at 19:29 +0000, Harald Arnesen wrote: > > Which implies that it's likely something fairly specific to your > > setup (either the config or the hardware - or possibly Void Linux > > doing something other distros don't). > > Init system is runit, not systemd? Could that affect something? Unlikely. > > Mind also attaching a dmesg of an affected kernel (or with the revert > > in place, I guess - it shouldn't matter until the reboot ;) > > dmesg from 5.12 without the revert is attached. That's it? There it just hangs? Not even printing something about tasks getting stuck? Did you let it sit for a couple of (2-3) minutes to see the task stuck warnings? What's weird though is that this is evidently with mac80211 - so certainly all the patches I just sent out will do nothing for you, and something else is strange, because mac80211 I've definitely not just reviewed but also tested these code paths many times. Hmm. But yeah, either way, a lockdep report or stack dump will surely help. Perhaps something in the ath* driver you're using that I missed. > > There's a lockdep assertion there, but you don't seem to have lockdep > > enabled. So it be interesting to see what happens if you > > > >  (a) enable lockdep > > Will report when I have tried it. Thanks. johannes