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 E9E8D6FB6 for ; Mon, 30 Sep 2024 00:02:02 +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=1727654524; cv=none; b=i3nfIaQDy6FAZDdLVTVAQGuUfsyxwG2pvvdRCIYvop4uqIn1mzb88Rlomxx43t5DGSwdBc3Q2Xz1+fkcrXnY8hUDSgZXqD+0Wo4zlQ+9mCGuXjj4/rM5nCB7Y0daY8eun/LaPoMWp6f7HMc8nVnet/77Vs6hyhByU0d0Vri+dQ8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727654524; c=relaxed/simple; bh=9WigQ89RfPBnQxVrMhhSMc5sdbcvJrNbIPGEqhszeS0=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=QDKGD9yLWx0jTy9r8277ixbrvJh4Mm7ysyFv6jo/ajFGOQ4JsfVnbI7K/VR+K6gPDbd7PcWBeQLwb3N5tq5XmknT9GbtxlSe2OgZ3aet7/Eks33iXXGoD43yaSHWXNBlK9bNLVJqSEdUJN8v82WzzA1h/lgU2luDPl3HYQPHB9c= 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-82cdb4971b9so369282739f.2 for ; Sun, 29 Sep 2024 17:02:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727654522; x=1728259322; 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=GqkcY2vcsdnQYJ9bZVRXIIUqjDw8dV5GMcukPhkbAUQ=; b=VrSO3a6iawQKOAn3N5SG92X8dQwktcfsG+k9af3UX7LKQR/22AiEdKdFG2UVwKEe9N 3wZe9+LFXOq7Heu5marQ69Uvrwkx0NCFVc9wx2sETlTY2qYdF0XWey8PVzvOUIQlP/yT f6PnOohMJGO7JvMwerLpYoV7Zi8356oniEEmIraLVIrwq6svMKNDbJogsp1nJqSKBqk6 vjfiSVdvEIqEHNlIQycCa2VJEq/2LInFwMTcPQgf//kwEgGoKUO9weFt9FO88JcCGigE kdTqMOS0NZ76Nr233G/jCQOJKGaq6vUQ2kHoBQ1etzeNthXsoS/1sqe2zMLhdXsIbQYB 1Jxw== X-Forwarded-Encrypted: i=1; AJvYcCUJ447oNJQLQs5uaFlUVrdVA3UrPFMJeSB3jizaY2jO84YgtaO7rTO4+af9aBu0sf5yuEnbTMVWLU49pxo=@vger.kernel.org X-Gm-Message-State: AOJu0YyCFYuUgVG2pM2mhkOfk18xePfAj3ifw5jcEamVoDXMYkVp/KPo hy3i3TqdR/QZgpVn+3xhQTzQMxZMcahyy+fsOU366kMSVVLE8Hf1IjBHUJIJTwL6jAQ5eiPMmeB Lfws99e9WtcBSvq0HeRsg62mqQGGjfVgX3Jdfp22YEE9B2An3sHvxJSw= X-Google-Smtp-Source: AGHT+IGb3O22JtuXscIgXzC3Wg7b0AcaIhd1YxRgWtwh6ExSsXK4oTCZfN3REuKytKWCRWmYtT49O25v1gezLPf69aWHzH9yQMWq Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c83:b0:3a0:8c83:91fb with SMTP id e9e14a558f8ab-3a3451bc001mr74619555ab.20.1727654522095; Sun, 29 Sep 2024 17:02:02 -0700 (PDT) Date: Sun, 29 Sep 2024 17:02:02 -0700 In-Reply-To: <000000000000341f5f061d8d6bcb@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66f9ea7a.050a0220.aab67.0023.GAE@google.com> Subject: Re: [syzbot] [mm?] BUG: Bad page map (8) From: syzbot To: Liam.Howlett@Oracle.com, Liam.Howlett@oracle.com, akpm@linux-foundation.org, david@redhat.com, hdanton@sina.com, hughd@google.com, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz, vivek.kasireddy@intel.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit f8d112a4e657c65c888e6b8a8435ef61a66e4ab8 Author: Liam R. Howlett Date: Fri Aug 30 04:00:54 2024 +0000 mm/mmap: avoid zeroing vma tree in mmap_region() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13a44127980000 start commit: 3efc57369a0c Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=10644127980000 console output: https://syzkaller.appspot.com/x/log.txt?x=17a44127980000 kernel config: https://syzkaller.appspot.com/x/.config?x=a4fcb065287cdb84 dashboard link: https://syzkaller.appspot.com/bug?extid=ec4b7d82bb051330f15a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113acd9f980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14cc0127980000 Reported-by: syzbot+ec4b7d82bb051330f15a@syzkaller.appspotmail.com Fixes: f8d112a4e657 ("mm/mmap: avoid zeroing vma tree in mmap_region()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection