From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f69.google.com (mail-io1-f69.google.com [209.85.166.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A33D24293B for ; Wed, 6 Aug 2025 11:21:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754479264; cv=none; b=mJykOI/JtSgzj7SKuJyswogXkvU+OS0hQoha6ZJViDg1u5Xz6zTVkPMe3PLj5i6tDp9mK7u/sY5hgutqAuAzxaPP8s0/CuXybX+oTspB3xINtTzL4dMUREJ18hFwSfeD7l/hN/tdzmO3JawOf0xiEks41E3Na8BDWU/bm41R+qo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754479264; c=relaxed/simple; bh=mgmJRhfO7DYaJq9sSgn/1UlpFRFY5x1Iv0jvdN0g1EI=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=JQQFLfh8eQV9wwHJUxfXjFZHi9KId6HUa+b4x3aLVq6zwtnKiwe2Yn4bP/owMoygKgZ0CPEr0GxpnBy1tcR3xeZKRvS7tmIEM8H5xuhi6MJ7QDD3UG5IFc1qb9VJN5cceEBwgX/A6paaAEIE/hjCWpTURpseUYXsHElWgjKsVxc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f69.google.com with SMTP id ca18e2360f4ac-88178b5ce20so659458539f.3 for ; Wed, 06 Aug 2025 04:21:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754479261; x=1755084061; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=mBh7Fm82e/83X/4sbQZ9G+dmHp4LzfEOu4jtWqJqSlo=; b=Fa6ISJa7Mnh6f7SBWXpfwQYQI5mBBj/OQdcQoaHd6rNXDhnx/F2JxtQCzfiR/oAlin trdlobqkRrQ5NMKDO+ssJJCPW2Pqi4Z0vU5UK5kWQUfpSTNjtLxFnLAbnsCb6fqfa/QY Z/OLpltaCYqCAba/kPBlTlB+pHcSIGYTgcZKwsawu4XKIpS95SrqN/plVZftw1ig7iqQ 3rOpi9M3ucX79chab7q3xb3Tht9oMEO2gBVidpcZD+9uP3RFwaXxOq4m0U3MjO5FOGev 9Za7C/IOi879YfhpnI776VBdBAFn+W8JwP+thaWbWPPxKV2gUFCXGiaFNyY6UdJExPuU udpg== X-Forwarded-Encrypted: i=1; AJvYcCX9mt0eYGzGfHYurY3jfGLJYZK1LHCzUKaRdRyvZS/vmRKDTJfHw7wVvG0sCfcuYaZNu8IDwicaY6cDzsM=@vger.kernel.org X-Gm-Message-State: AOJu0YyNe5/vJP55cZ2vI02uZpmKGOPnY6/ZC4HAhZ8O1Y1bJcERdIWj Z9xCX9DlweMnmozcVGYtECc8jWNkKVUSBT8eCmhCqTPPOhERek+w+3RBdFHucX3fA96WGLVGiqv oY06PoEiPn15aVxt+rwDlrMTSuJ4f8hAGjOIBnffJvq1hxbm6aMfA/mzZB3Y= X-Google-Smtp-Source: AGHT+IEx/DgJCgjIzJR79zgzfgVyQw3lyABlgLRbYTaTNizDWSCd9o/LV1CtahpQZ7i0DAFsFnRtPKyE0y4O80UQXgd2oHAIlNyJ Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:3ce:b0:881:8e2c:9995 with SMTP id ca18e2360f4ac-8819f113408mr443196639f.11.1754479261627; Wed, 06 Aug 2025 04:21:01 -0700 (PDT) Date: Wed, 06 Aug 2025 04:21:01 -0700 In-Reply-To: <68930511.050a0220.7f033.003a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68933a9d.a70a0220.7865.0004.GAE@google.com> Subject: Re: [syzbot] [mm?] WARNING in follow_page_pte From: syzbot To: akpm@linux-foundation.org, david@redhat.com, dev.jain@arm.com, jgg@ziepe.ca, jhubbard@nvidia.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, peterx@redhat.com, syzkaller-bugs@googlegroups.com, ziy@nvidia.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit cac1db8c3aad97d6ffb56ced8868d6cbbbd2bfbe Author: Dev Jain Date: Fri Jul 18 09:02:43 2025 +0000 mm: optimize mprotect() by PTE batching bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13c746a2580000 start commit: 7e161a991ea7 Merge tag 'i2c-for-6.17-rc1-part2' of git://g.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=102746a2580000 console output: https://syzkaller.appspot.com/x/log.txt?x=17c746a2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=75e522434dc68cb9 dashboard link: https://syzkaller.appspot.com/bug?extid=57bcc752f0df8bb1365c syz repro: https://syzkaller.appspot.com/x/repro.syz?x=126e85bc580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=161a22f0580000 Reported-by: syzbot+57bcc752f0df8bb1365c@syzkaller.appspotmail.com Fixes: cac1db8c3aad ("mm: optimize mprotect() by PTE batching") For information about bisection process see: https://goo.gl/tpsmEJ#bisection