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 A73D5C433EF for ; Thu, 24 Mar 2022 19:45:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352296AbiCXTqy (ORCPT ); Thu, 24 Mar 2022 15:46:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346503AbiCXTqw (ORCPT ); Thu, 24 Mar 2022 15:46:52 -0400 Received: from mail-lf1-x132.google.com (mail-lf1-x132.google.com [IPv6:2a00:1450:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBC784A93A for ; Thu, 24 Mar 2022 12:45:19 -0700 (PDT) Received: by mail-lf1-x132.google.com with SMTP id w7so9859131lfd.6 for ; Thu, 24 Mar 2022 12:45:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=1/SpAkDZmYsurKOrmNkyHHFnP0zb0UOgoVrdpJO91Oc=; b=ZoSCZ766Kxe8wT/YhSf5nEhzp8afBIvXr9XNRko3mNj+l4/a/cZ9dn1i1lKN1IbMmc pHFOKqqVoGl36ORhq656wjKXAiIQMVs1tHJjhHLw3rXrs6xDSfbWALmkglNN9AD88o4W 6TIaEH/IftuwCvs6gPTFSieDspeOImXdTKrhw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=1/SpAkDZmYsurKOrmNkyHHFnP0zb0UOgoVrdpJO91Oc=; b=n2ij5SdyH30TmNYSpwce3+bacaYKwmLjay1REjnXRBfMs+JRf1VKunxE1hF/2SdWYs fJ8tkrHHheuCiGGg9vsKv/8KB9PyJU/2sUUe5S4Dh/Z6x7PUWKQjtqd6a7Pl/Pr87c5Q t2mJZ8U7USXAYtqLcy2OUDx18NoEt1mApCoJaCPijBGos3HNi7TdNMqh+nDJZieipx51 i6f/aiw5Yji2yASysFuRkaC7669t/1VDLFF/JiueXk0iH1Jd/CSLtVTHrMhSTXA4Fa1a M2U5iN5L+wRuU5907UlORCzmu+q6zc4x2ikI5359U8NZr0G3nJrtJhG/Y5hdhroDK8VI gZqQ== X-Gm-Message-State: AOAM532ulN55h7nYEkynvlzXQd+B9edbRhspmSvUhT2ghRRIwt9pD8Kv aE84mV075VxVYTBYxaH/s+LsA5tRz97Xvucb8rs= X-Google-Smtp-Source: ABdhPJzTKmKaGfczQR8i833p/Y5fYIxiTQ/TRuCazCJXaZfRkD1yaAeECKXnuB7WKiqY0W4ux2S7sg== X-Received: by 2002:a05:6512:22d1:b0:44a:6e6a:8ff6 with SMTP id g17-20020a05651222d100b0044a6e6a8ff6mr608150lfu.61.1648151117819; Thu, 24 Mar 2022 12:45:17 -0700 (PDT) Received: from mail-lf1-f45.google.com (mail-lf1-f45.google.com. [209.85.167.45]) by smtp.gmail.com with ESMTPSA id n13-20020a056512388d00b0044331f8f1f8sm442487lft.128.2022.03.24.12.45.17 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 24 Mar 2022 12:45:17 -0700 (PDT) Received: by mail-lf1-f45.google.com with SMTP id w7so9859019lfd.6 for ; Thu, 24 Mar 2022 12:45:17 -0700 (PDT) X-Received: by 2002:ac2:4f92:0:b0:448:7eab:c004 with SMTP id z18-20020ac24f92000000b004487eabc004mr4959201lfs.27.1648151116683; Thu, 24 Mar 2022 12:45:16 -0700 (PDT) MIME-Version: 1.0 References: <0000000000009901d505dafc07b3@google.com> In-Reply-To: <0000000000009901d505dafc07b3@google.com> From: Linus Torvalds Date: Thu, 24 Mar 2022 12:45:00 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [syzbot] general protection fault in list_lru_add To: syzbot Cc: Andrew Morton , Dmitry Vyukov , Linux Kernel Mailing List , Linux-MM , Muchun Song , syzkaller-bugs Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 24, 2022 at 12:41 PM syzbot wrote: > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: Heh, well that's unfortunate. I think the issue is that it triggered a new BUG() that didn't match the previous NULL pointer dereference, so it thinks things are "fixed". Linus