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 A7518C433F5 for ; Wed, 24 Nov 2021 13:51:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348378AbhKXNyq (ORCPT ); Wed, 24 Nov 2021 08:54:46 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:54256 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354339AbhKXNuQ (ORCPT ); Wed, 24 Nov 2021 08:50:16 -0500 Received: by mail-io1-f72.google.com with SMTP id a12-20020a056602148c00b005e7052734adso1878954iow.20 for ; Wed, 24 Nov 2021 05:47:06 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=w8KNWN5k8usq5kIs6yZF5uGq4fyHvwNbxGeGmIcl1SI=; b=no4AYiMsIie0GlwiXONDMx5/blRG7Sb6OHxrhcpg5Iy0u/HcngI20pOFJZ9WreARiJ n6QBwQKlaPhdj9xp6UGX3JhlmoQP7rkBK8B+tBOXDc+UJjQeew7ZQ3b0QF46F3+2fnIt 3FQpev3QYiX030CvqcQm5MxgYv8yilJq4nfQKt2AoEtZZf70YXQSbfJ1K85YIKNrEac/ J1XP4eZDVHbc+hQ7nfrmiB7BbGaHtTGllTqT3XnNiJsbod1sNyQMBFIQENDxskNrSKYF iDmYF7Uuw2m+YazRd/7kPG873e5nXX6NzyN7aEvbojQbCMz9w4OyJgn54CrG2vnk+XDx a/Bw== X-Gm-Message-State: AOAM533CR2AFuW7R4SaYQ95j0W90YKnB8GYY7ybESr9x2K4Wbs5zOmYp cCewcbsoI2WDyUtyVm4UlZ/24fqIiimkmfjFI+HydWwSj6Lx X-Google-Smtp-Source: ABdhPJwq3s1JeTA8P4XTcawFUqUpzwHD16hTfE6M5zYXq6aiMGdlavvBPwbljhdJQnalmbuiYvAPEqfkqFTBwMpSHwtAfGUkz3lZ MIME-Version: 1.0 X-Received: by 2002:a05:6e02:587:: with SMTP id c7mr13176266ils.311.1637761626006; Wed, 24 Nov 2021 05:47:06 -0800 (PST) Date: Wed, 24 Nov 2021 05:47:06 -0800 In-Reply-To: <00000000000062d0fc05cef24c57@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f1ea7c05d189175f@google.com> Subject: Re: [syzbot] WARNING: refcount bug in sys_memfd_secret From: syzbot To: akpm@linux-foundation.org, dvyukov@google.com, fgheet255t@gmail.com, fmdefrancesco@gmail.com, jordy@jordyzomer.github.io, jordy@pwning.systems, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, rppt@kernel.org, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, willy@infradead.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit 87066fdd2e30fe9dd531125d95257c118a74617e Author: Linus Torvalds Date: Sun Oct 24 19:48:33 2021 +0000 Revert "mm/secretmem: use refcount_t instead of atomic_t" bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11cccf06b00000 start commit: 9c0c4d24ac00 Merge tag 'block-5.15-2021-10-22' of git://gi.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=be398dd7862f4b36 dashboard link: https://syzkaller.appspot.com/bug?extid=b904a1de3ec43711eba5 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=130cabdcb00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=175b91acb00000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: Revert "mm/secretmem: use refcount_t instead of atomic_t" For information about bisection process see: https://goo.gl/tpsmEJ#bisection