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=-5.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,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 4C220C4363A for ; Mon, 26 Oct 2020 15:15:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A84D2222C for ; Mon, 26 Oct 2020 15:15:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iq3pZ6/Q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1783509AbgJZPPU (ORCPT ); Mon, 26 Oct 2020 11:15:20 -0400 Received: from mail-lj1-f175.google.com ([209.85.208.175]:46806 "EHLO mail-lj1-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1783039AbgJZPPU (ORCPT ); Mon, 26 Oct 2020 11:15:20 -0400 Received: by mail-lj1-f175.google.com with SMTP id c21so10556851ljn.13; Mon, 26 Oct 2020 08:15:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=ymFwX4dMeWO3X/lArDe4pdm35TrYA8Kz/hMAxunSNTs=; b=iq3pZ6/QL6OMAVcMvrFMnH1DLI4OH8H7cZIKqo1wIUCGQls8T2Ro6vl24nuNS66i39 1n4aOeHzimhTFvpeNNyqHSXxsdHiCTV7961Vh1j0/RIdXUUh7vfPw9EgQoojJjM1GIbP SePccVKqHjpMn2iFa52sFKDoftFLI8Sc8B3F9xTfRQcHlK6C90dV3D6T9cOqQTOtzMB9 VEhkuuNnDKsSFho0KBPX39zlpQpW28t0W63Y4eGIO/cg8WOanlYSqdBLxWgUhc8/50YW wLtSt97cenoqHIDALpfpuN6b/PhPTtuqzvaiFMfsxRYtTHrZ920TFNyq1kncFEMCgZp6 YYJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=ymFwX4dMeWO3X/lArDe4pdm35TrYA8Kz/hMAxunSNTs=; b=s8qwNRNRq3sFfsJrtmqJlwIimj8GxqHZ2Aph+iYkMF40tjs9GbO7MBw6GryJmkukmr UtbLDn4ZZB5Nu253C6tokV6cCEZwfoHqGQVw0BTuc72cz31olHbsMXEKs+Iwol73WuRc tEInaUmc8ubXyRVUg1Ne5rAkYrdYd1QAd0irQuDR6HAly0uIQBVlMD7k1QZYZrgVgZ78 ARJj+CUqU0fRIGCYM/r4yqs773UsnSSwpJGq8nYIqCCp8wIBtIzYsoAEagKKTGSp7GBs k6S4+Luv5q49uV/Pz37euJg6tkdIfX8c5fqCK8CG9XIQORJKxiVRvDxh5rGzSiDKiW3w gVAg== X-Gm-Message-State: AOAM533MBcsp7NV9utBLJrL4ASbUowfhonVl5EamclCuqc0sLecM+wDY 0MPBCoDihgRkAr5HAHHv2/8= X-Google-Smtp-Source: ABdhPJx7L2+12gO/j37FRejcJ/XkwTqNVFm3xPzzs1Xo/tzk231g6fRUxZsozHLljba2yIitR2elGA== X-Received: by 2002:a05:651c:3d0:: with SMTP id f16mr5618129ljp.454.1603725317660; Mon, 26 Oct 2020 08:15:17 -0700 (PDT) Received: from pc636 (h5ef52e31.seluork.dyn.perspektivbredband.net. [94.245.46.49]) by smtp.gmail.com with ESMTPSA id x19sm1071749lff.189.2020.10.26.08.15.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Oct 2020 08:15:16 -0700 (PDT) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Mon, 26 Oct 2020 16:15:14 +0100 To: Richard Palethorpe Cc: Joel Fernandes , Alexander Potapenko , rcu@vger.kernel.org, linux-kernel@vger.kernel.org, "Paul E. McKenney" , Uladzislau Rezki Subject: Re: [BUG] Lockdep splat during kvfree_call_rcu and stack_depot_save Message-ID: <20201026151514.GA3942@pc636> References: <87a6w9uiz3.fsf@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87a6w9uiz3.fsf@suse.de> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Hello. > Hello, > > The kmem memcg selftest causes the following lockdep splat on 5.9+ > > [ 67.534319] ============================= > [ 67.534410] [ BUG: Invalid wait context ] > [ 67.534522] 5.9.1-22-default #125 Not tainted > [ 67.534647] ----------------------------- > Working on it. We are aware about it. Thanks! -- Vlad Rezki