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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, 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 5B381C2BA2B for ; Thu, 16 Apr 2020 06:25:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 42BDD2078A for ; Thu, 16 Apr 2020 06:25:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407945AbgDPGZL (ORCPT ); Thu, 16 Apr 2020 02:25:11 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:44095 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407734AbgDPGZG (ORCPT ); Thu, 16 Apr 2020 02:25:06 -0400 Received: by mail-il1-f198.google.com with SMTP id c4so8107251ilf.11 for ; Wed, 15 Apr 2020 23:25:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=S9b/LLGTp46xQuNkjprKkHL+JPInIWFFm9gLUxjatqM=; b=d1epOEha3ojAGEB3BAEFOIAMZjjFgQB6oPkykGm2PqCjC9NwiQMupPss4ONY8c9KS5 UwPjzvfj2CdIyKomeQMKayCh6XM+SeOhp1ZygGUTVcCMt2L+3eX6dS/LNI6WRMKF+dg/ J6u01ixl51ZFJYvYL+7IA0zKRw+dSX+FkW9uGX0C2r+ZQ0jw64BhOIFINP1hWriO3mMU 93blui8yEkeuTJVCl3W7UjZ7LNxPcF8tfMMLEy51F1b+xWlHmORg3mO00OAlF7CvZmMM k3idtJgq85cY32UQ3X5cxb7PhCPvLfmk0zzBLSNpu+u9asNuw+WcWbydv54yF77/ur/A Q53A== X-Gm-Message-State: AGi0PuYDAgjnemFw0ItTfLW1qUEL2oHTZC3aTd3GsPlXK7sb2UYDafQu k1YRWxU7SCno+xQ54qWddiwgWUnQwNBWaVgbrYIAiEUbgBmj X-Google-Smtp-Source: APiQypK09xIpakUrRfClLjOKpZtYwC1UGo9n92wVet0wCZAL1e3IjdYSABPD1sVWI6uUY3bx7dSm2rd/iq5XTtAOUItChPURo+pC MIME-Version: 1.0 X-Received: by 2002:a92:d1c1:: with SMTP id u1mr9027999ilg.280.1587018304537; Wed, 15 Apr 2020 23:25:04 -0700 (PDT) Date: Wed, 15 Apr 2020 23:25:04 -0700 In-Reply-To: <0000000000009b1944058ca3e4a8@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004b4bbc05a3627e5e@google.com> Subject: Re: WARNING: refcount bug in kobject_add_internal From: syzbot To: benh@kernel.crashing.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, longman@redhat.com, mingo@kernel.org, peterz@infradead.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org 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 syzbot suspects this bug was fixed by commit: commit 810507fe6fd5ff3de429121adff49523fabb643a Author: Waiman Long Date: Thu Feb 6 15:24:08 2020 +0000 locking/lockdep: Reuse freed chain_hlocks entries bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1127249be00000 start commit: 6fbc7275 Linux 5.2-rc7 git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=bff6583efcfaed3f dashboard link: https://syzkaller.appspot.com/bug?extid=32259bb9bc1a487ad206 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=115bad39a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1241bdd5a00000 If the result looks correct, please mark the bug fixed by replying with: #syz fix: locking/lockdep: Reuse freed chain_hlocks entries For information about bisection process see: https://goo.gl/tpsmEJ#bisection