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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,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 C7F08C433DF for ; Sun, 28 Jun 2020 00:49:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A35B720C09 for ; Sun, 28 Jun 2020 00:49:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lca.pw header.i=@lca.pw header.b="TResSNgQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726704AbgF1Ate (ORCPT ); Sat, 27 Jun 2020 20:49:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47870 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725940AbgF1Ate (ORCPT ); Sat, 27 Jun 2020 20:49:34 -0400 Received: from mail-qk1-x744.google.com (mail-qk1-x744.google.com [IPv6:2607:f8b0:4864:20::744]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0911FC03E979 for ; Sat, 27 Jun 2020 17:49:33 -0700 (PDT) Received: by mail-qk1-x744.google.com with SMTP id e11so12341521qkm.3 for ; Sat, 27 Jun 2020 17:49:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lca.pw; s=google; h=content-transfer-encoding:from:mime-version:subject:date:message-id :references:cc:in-reply-to:to; bh=aIUCFtVbjmz2UWddn6XMMzJcn+xFSa+jncR/lAH4nxU=; b=TResSNgQGlitgQRbkTDrv9Ab6BRSFbwkNZDckP6UkDi9vvRf0fUUJS6B2GDrAteQRP Ur/0NUJXvRWb4fa8S1ErSBZv3sZCh0jN/Z46n28Y3W82xHaHGswxdCZrN1G/xO0HKlI8 OujANN9R83aQ7JODaCEraWp6YVLHpQBjvb0jusEyqQlCyvktn3ZyYOA1/cmE5Qf6orbA Ipmbg2RGJBARNbM8j4kNV9V05vahyrw/u2uWEhgjdJNYFjMxRLlm8MYtUgV6L9pbrv6U a2aEDxYc43xc40mKRw1g/Uh7OU+Bi2mCCOGut6tWqU4KTuVBxXI43sRo7ZA8H8fjA1pm VP4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:date:message-id:references:cc:in-reply-to:to; bh=aIUCFtVbjmz2UWddn6XMMzJcn+xFSa+jncR/lAH4nxU=; b=fV65ZwnHrNQU1CbVtTSBTzDw9M1f6g0Ut3MIYfOJC++ImpO9W5as/lpFC1l8nPzY+F J0LyRXAu7jHteENrZ0+gGs1Fx/Iw9UvjEvp6FR/zslnCGxnMeeoBUp7Yl9UXMlbH6PBi 3Yd/FaWhhCe659fqMpafZFFIxxfX9uhADJ7jfJHm+p4HsIr6WSIh2FuY1Hcj9vzsi4ED Aj6/dMICYZ9iOLuxXvzXgUNCSQ5ppRfvlrH+hkCpMFAMrIQ+8H2RgIuPFVNtoPTkhPbt AxcVKQ3Yp/QMb+L3MSdOQWtJHm97lNvCDCMPaCQcRXHUMhnGQNteO1gBZ+ppXPu1UHzT aNAA== X-Gm-Message-State: AOAM531nXZ9repuRNemRlBzig+x+odUqED0cN0sM0ttP+qmPRw/VxNtY 073lqbqTmtbsUFMRImB6h1WFA0YbMUxciQ== X-Google-Smtp-Source: ABdhPJwE6ef11vX0eS7F8SGmPGFDsOo+ruwTfPdFcFjy+UhMX5OBuU8fvN0wtss6T7AkymR/I1drUw== X-Received: by 2002:a37:4acc:: with SMTP id x195mr9558401qka.454.1593305371968; Sat, 27 Jun 2020 17:49:31 -0700 (PDT) Received: from [192.168.1.183] (pool-71-184-117-43.bstnma.fios.verizon.net. [71.184.117.43]) by smtp.gmail.com with ESMTPSA id 72sm10855463qkh.136.2020.06.27.17.49.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 27 Jun 2020 17:49:31 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable From: Qian Cai Mime-Version: 1.0 (1.0) Subject: Re: linux-next boot error: WARNING in kmem_cache_free Date: Sat, 27 Jun 2020 20:49:30 -0400 Message-Id: References: <20200627231013.GM7065@sol.localdomain> Cc: Dmitry Vyukov , syzbot , LKML , Linux-Next Mailing List , Stephen Rothwell , syzkaller-bugs , linux-mm@kvack.org In-Reply-To: <20200627231013.GM7065@sol.localdomain> To: Eric Biggers X-Mailer: iPhone Mail (17F80) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > On Jun 27, 2020, at 7:10 PM, Eric Biggers wrote: >=20 > This bug also got reported 2 days later by the kernel test robot > (lore.kernel.org/lkml/20200623090213.GW5535@shao2-debian/). > Then it was fixed by commit 437edcaafbe3, so telling syzbot: >=20 > #syz fix: mm, slab/slub: improve error reporting and overhead of cache_fro= m_obj()-fix >=20 > If CONFIG_SLAB is no longer useful and supported then it needs to be remov= ed > from the kernel. Otherwise, it needs to be tested just like all other opt= ions. It is awesome that kernel test robot was able to bisect it which is especial= ly useful for testing legacy options like SLAB.=