Received: by 2002:ac0:a581:0:0:0:0:0 with SMTP id m1-v6csp11336imm; Tue, 19 Jun 2018 13:21:25 -0700 (PDT) X-Google-Smtp-Source: ADUXVKKT005x+nD76DL+HOAufCvmtJfYSBg+dAFMUpBbg/L2jjcirXJc+KKd/UQck/h7m447MHqK X-Received: by 2002:a63:6642:: with SMTP id a63-v6mr15875840pgc.408.1529439685822; Tue, 19 Jun 2018 13:21:25 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1529439685; cv=none; d=google.com; s=arc-20160816; b=TTNTGVwDcDhn+Ex8X0WCr05mFP6VIBIYN+RZhfGrteE/8rbdJzV6rg8YW5jaFpWFle 4vhG7uBaUtKyT3uNZeM6xYh9XEKj6tEWbB/IArTbYjWpMDIlf4e97tWJCZA1LLw9MFnX rwzPqP7Qi3wQBlQwonmvXOrC0aOEgC00/TlX/wiM8+d8Gp6Fm8oUaXyOuLOmt2c1WIOW cqWnPqBZ9+QEr7OyVdqRhlif2e/ev7SH/QxFHbLXVelIZhngSOHBeuvv2ZC46O7mspQm kv08xu92eYmK0IIxRZKGxQ48paYU8mUF+GCtyRQauC0Svu65OlG4udCTHHD6gAj+tbwB df1g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:dkim-signature :arc-authentication-results; bh=+et8b3gwL6aNe8UgbMgcV/LXFdHpC9ZxnH59ixLvNMI=; b=avDQjXCvpAloMiIsgkpJFq3DdvI+oAb7FNEpylMBoUkVM89Qm324ZKo3/mAyj1p4NK TektylmSAiybxsgVKKWQzLYKT7qMqdaCtPIZXwh6fNM6qlk6Lzw6fWnMHj6vzaNeYih+ H1FJ/jZMPV6PLGa/vQWtMWD+F9BjJS65bv0SvqJS5IA8IWbwA5trUr1N2euU5KuiuDZQ j8fuoWng1rJFZ+gylN2HLiUkuhGeqvFOxPdCB6wfqAYvmbt+MaXJBQ/061U1YN7Ja/YD XEfppSr4jvKy7BJxCV/7o8RkDkMM1NaRD/kEbpezl0yWTqsGkFxfyrrhMnyDqGuhbHnB gHpg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@zx2c4.com header.s=mail header.b=n7IfIAbZ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=zx2c4.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w15-v6si502591plp.7.2018.06.19.13.21.12; Tue, 19 Jun 2018 13:21:25 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@zx2c4.com header.s=mail header.b=n7IfIAbZ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=zx2c4.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030320AbeFSUU3 (ORCPT + 99 others); Tue, 19 Jun 2018 16:20:29 -0400 Received: from frisell.zx2c4.com ([192.95.5.64]:46821 "EHLO frisell.zx2c4.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755265AbeFSUU2 (ORCPT ); Tue, 19 Jun 2018 16:20:28 -0400 Received: by frisell.zx2c4.com (ZX2C4 Mail Server) with ESMTP id d8d794b5 for ; Tue, 19 Jun 2018 20:14:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=zx2c4.com; h=mime-version :references:in-reply-to:from:date:message-id:subject:to:cc :content-type; s=mail; bh=RYmmXi/6qoEk2ZGY65XQwZDUqsU=; b=n7IfIA bZxCzkj9SHjo8NmT5o1Kar87MdnhaaAEDAaVxzND9vs6wMyYmAEgeTMYI+WlYL8f M0zWvqFvNj8neSKfKq5Siq4kzC0hkiRpMF2FN1cVTap7yY7eJvRjptzv+3Y7uHfc b0D8Q25j6pXM16UjhWyLa95JZbD/jpQXBR/OZQXttM99SCmcxfO59ceB/PTrtzE+ 2PlmbtGHRix43w7pevKPUSLOtqOwOQukEgOr93EMMRjA0t/9IimHy0lY5agbUYHR piaiG8RxA22woa97EjBfbeZr3xN9NlH6rZoC4Cp9Gw0ELbp8Ocv25qIQZIySMcpK tAvfDXIxgSf4iylQ== Received: by frisell.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 42d1fd0a (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128:NO) for ; Tue, 19 Jun 2018 20:14:33 +0000 (UTC) Received: by mail-oi0-f42.google.com with SMTP id l22-v6so946497oib.4 for ; Tue, 19 Jun 2018 13:20:27 -0700 (PDT) X-Gm-Message-State: APt69E2SINEtr+ENTTYJqMUO6OA3PRPo2qb7sMuCUPKKk8PcdCilPvwA 7b5wzztx0Nq1GMvRSYJNgAU4ifjKlNTkv/mgScA= X-Received: by 2002:aca:adc6:: with SMTP id w189-v6mr10686912oie.105.1529439626736; Tue, 19 Jun 2018 13:20:26 -0700 (PDT) MIME-Version: 1.0 References: <20180619192139.31781-1-shakeelb@google.com> In-Reply-To: <20180619192139.31781-1-shakeelb@google.com> From: "Jason A. Donenfeld" Date: Tue, 19 Jun 2018 22:20:15 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: Possible regression in "slab, slub: skip unnecessary kasan_cache_shutdown()" To: Shakeel Butt Cc: Dmitry Vyukov , aryabinin@virtuozzo.com, Alexander Potapenko , cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, Andrew Morton , kasan-dev@googlegroups.com, Linux-MM , LKML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Shakeel, On Tue, Jun 19, 2018 at 9:21 PM Shakeel Butt wrote: > Jason, can you try the following patch? Your patch also fixed the problem, which was also fixed by enabling CONFIG_SLUB_DEBUG, per the other email. I haven't checked to see if your patch is simply a subset of what SLUB_DEBUG is doing or what. But hopefully this points in the right direction now. Jason