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 96FD7C3DA7C for ; Thu, 29 Dec 2022 02:39:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232678AbiL2CjL (ORCPT ); Wed, 28 Dec 2022 21:39:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232390AbiL2CjL (ORCPT ); Wed, 28 Dec 2022 21:39:11 -0500 Received: from mail-qt1-x830.google.com (mail-qt1-x830.google.com [IPv6:2607:f8b0:4864:20::830]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D46C11A26 for ; Wed, 28 Dec 2022 18:39:09 -0800 (PST) Received: by mail-qt1-x830.google.com with SMTP id a16so14096465qtw.10 for ; Wed, 28 Dec 2022 18:39:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=V+bI/PInPRC98qFA9k5hncItDaGS8mMQXxFI1nQJIp4=; b=X2ynwz0q67XMuFqwnARpn+k6f6pCVwzBmSoa/JoVIJz0mpklDIwy4BQoCDO7AXr7X5 AVaodKL6gzNg9EWKnNAsdyX7N0JXDgaFH5lXFL91nNU4XwO/ULdXCvzYdk4LejlCrSli 8anKcO2Wc1N0IYw2RNS8d2rZHCxtYlJemvVSo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=V+bI/PInPRC98qFA9k5hncItDaGS8mMQXxFI1nQJIp4=; b=Xd/o6W7ABPMOvgC6XxCq4N57Rxi9XcfC5VUHDYN/2tu6O/ppk+k+DtgfMZ4Nx2CwOA zkCSMFulCMA/BJwScEgS3MPyEfoUZcoZmNdCDXe+vmI6QvTn9auXi1vjUAl1tgEpJhOw J9d/qszGEgaZ3zlzdCi9pgpxx4uN1K7+sBKuj0LubgtFeHP+5DlWX1ewVIBG4AB+IfvM vkT14/Mx7V4mU5CfZMD8aoYdGf2TOjMfTiiDZKR/e5sNnc8j+0CY5ShWS514yk4QLURw mi4oF4InsgIUkeaMKesvHXD/NANjsPU3MHs8amFFx1Bp0ueD258sp9k6+XuIyFI9LXyn wqAA== X-Gm-Message-State: AFqh2krFTVyXeqoJRc76vwiQFqDT26Jyxag7CqX4QXTMPWeoojeFEx4f 6d2DUu4A5lucBiCklfmKcn0UjzqdHRRS0W8X X-Google-Smtp-Source: AMrXdXtfXEyda9itEIFjgy+iQfO5XoZd/e24ccb0xfNWsvdAR0VCxpQwY2mQqByeq5+GiAmig8uJAA== X-Received: by 2002:ac8:4998:0:b0:3a6:ee87:20e7 with SMTP id f24-20020ac84998000000b003a6ee8720e7mr32841312qtq.68.1672281548027; Wed, 28 Dec 2022 18:39:08 -0800 (PST) Received: from localhost (228.221.150.34.bc.googleusercontent.com. [34.150.221.228]) by smtp.gmail.com with ESMTPSA id bl33-20020a05620a1aa100b006f474e6a715sm12257335qkb.131.2022.12.28.18.39.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Dec 2022 18:39:06 -0800 (PST) Date: Thu, 29 Dec 2022 02:39:06 +0000 From: Joel Fernandes To: stable@vger.kernel.org Cc: paulmck@kernel.org, rcu@vger.kernel.org Subject: Please apply to v5.10 stable: 4d60b475f858 ("rcu: Prevent lockdep-RCU splats on lock acquisition/release") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hello, Please apply to v5.10 stable: 4d60b475f858 ("rcu: Prevent lockdep-RCU splats on lock acquisition/release"). The patch made it in v5.11 Without it, I get the follow splat on TREE05 rcutorture testing: [ 1.253678] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.162-rc1+ #6 [ 1.253678] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 [ 1.253678] Call Trace: [ 1.253678] [ 1.253678] ============================= [ 1.253678] WARNING: suspicious RCU usage [ 1.253678] 5.10.162-rc1+ #6 Not tainted [ 1.253678] ----------------------------- [ 1.253678] kernel/kprobes.c:300 RCU-list traversed in non-reader section!! I tested with the patch and the warning is gone. thanks, - Joel