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 A82C7C28D13 for ; Mon, 22 Aug 2022 22:38:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232145AbiHVWic (ORCPT ); Mon, 22 Aug 2022 18:38:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238484AbiHVWiZ (ORCPT ); Mon, 22 Aug 2022 18:38:25 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C93C63BB for ; Mon, 22 Aug 2022 15:38:23 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D72EEB818FB for ; Mon, 22 Aug 2022 22:38:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7613C433D6; Mon, 22 Aug 2022 22:38:19 +0000 (UTC) Date: Mon, 22 Aug 2022 18:38:36 -0400 From: Steven Rostedt To: LKML Cc: Linus Torvalds , Frederic Weisbecker , "Paul E. McKenney" , Peter Zijlstra Subject: Re: [BUG v6.0-rc2] lockdep splat on ct_kernel_enter() Message-ID: <20220822183836.6b80976f@gandalf.local.home> In-Reply-To: <20220822182850.32f91017@gandalf.local.home> References: <20220822164404.57952727@gandalf.local.home> <20220822182850.32f91017@gandalf.local.home> X-Mailer: Claws Mail 3.17.8 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 22 Aug 2022 18:28:50 -0400 Steven Rostedt wrote: > On Mon, 22 Aug 2022 16:44:04 -0400 > Steven Rostedt wrote: > > > Looks like lockdep and the trace_rcu_dyntick() code is getting out of sync > > with respect to whether or not interrupts are enabled. > > This is caused by this commit: > > 172114552701 ("rcu/context-tracking: Move RCU-dynticks internal functions > to context_tracking") > > The warning happens with the commit, and does not for the commit just > before it is applied. > Nevermind, I tested the wrong kernel (the grub reboot failed to boot to the new kernel). But it did give me a different lockdep splat when I tested the right kernel :-/ I'll investigate some more. -- Steve