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=-7.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 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 D2A62C11F69 for ; Thu, 1 Jul 2021 12:12:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ADA5461483 for ; Thu, 1 Jul 2021 12:12:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236355AbhGAMOd (ORCPT ); Thu, 1 Jul 2021 08:14:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:48686 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236192AbhGAMOc (ORCPT ); Thu, 1 Jul 2021 08:14:32 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D3BA561403; Thu, 1 Jul 2021 12:12:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625141522; bh=TT5ATJx6/SGmcZ2onpZJhXly2bwzw4Mlao44OlsAkcw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=X6ITX7x1DYq7u9skUcCsAXk3eYjBdE/n3aYvabBb9yGroo1OOK3laVLG6iEkcQOEZ 1gX9jQqStMnE0JdKtFWtTjvYsDGPvpf6y3BhxX+f1j5qlcWWO+6r05StyYejnLbxoM opX/2D54G7wzk1Htc+PDmkkFZuBRsaL6qC9xI6984+rZzShRwVYhCBSbSTU4sVMJ7R kWF2JMPzomyvyLkCTrc8JOf3beh5LCdRO0T3+vEZfR3Mp0i9v+iagq5N+qCTx7Ma2N 3B+UHeaduFzw4a2xaBONWMSZV2uD5+/BxPJ0OLEy315cIu4IaDcTxOStA3r5DOF9ep AOxRVONgQmdcQ== Date: Thu, 1 Jul 2021 13:11:33 +0100 From: Mark Brown To: Richard Purdie Cc: Tejun Heo , Paul Gortmaker , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Al Viro , Zefan Li , Johannes Weiner , stable@vger.kernel.org Subject: Re: [PATCH] cgroup1: fix leaked context root causing sporadic NULL deref in LTP Message-ID: <20210701121133.GA4641@sirena.org.uk> References: <20210616125157.438837-1-paul.gortmaker@windriver.com> <20210630161036.GA43693@sirena.org.uk> <696dc58209707ce364616430673998d0124a9a31.camel@linuxfoundation.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="FL5UXtIhxfXey3p5" Content-Disposition: inline In-Reply-To: <696dc58209707ce364616430673998d0124a9a31.camel@linuxfoundation.org> X-Cookie: Turn off engine while fueling. User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --FL5UXtIhxfXey3p5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jun 30, 2021 at 11:31:06PM +0100, Richard Purdie wrote: > Out of interest are you also seeing the proc01 test hang on a non-blocking > read of /proc/kmsg periodically? > https://bugzilla.yoctoproject.org/show_bug.cgi?id=14460 > I've not figured out a way to reproduce it at will yet and it seems strace I've been talking to Ross, he mentioned it but no, rings no bells. > was enough to unblock it. It seems arm specific. If it's 32 bit I'm not really doing anything that looks at it. --FL5UXtIhxfXey3p5 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmDdsPQACgkQJNaLcl1U h9CWJwf/YF+XAA1qBYxWYCc8ZI/W6jctkkgrPHFx22WMAE341gHUGHvmC7twHrgI DcCGdXI1CL2IQ0YJos9z2ydV66ZTtH2qP1K2Ugt2GzZyL0zL+P5hgndYquVXNOFQ p736kNqsvsB3tOrsIDzLeVheqJmQwH4E60rBgU40C5oRkNYmO1aA9KLDhOxa5NAX KfZ3to8t+mR1KCh/LipJaBgmmLli9c0s+reuz9bfnJnAqW7VHSQvGopo5afkmWYO RO32LIAwI81JTGOyG+gWjSExxS8sMWYEuSMkCWiXwtrKKjm5XD91W4465CmfOtgb UeHMvCVvCwaU5A+cq9VTN6vsMx7Qhg== =UGEt -----END PGP SIGNATURE----- --FL5UXtIhxfXey3p5--