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 753712E8B85 for ; Fri, 5 Sep 2025 10:48:06 +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=1757069288; cv=none; b=lKic29SuD5sny9wN/MatbqOe/loVD2ccmj8iy9A1GCX2i8Q3NjhjUvJZz93cl3eS3xbTMS7XzYsUZAmyX20MyhVHykm/8kr7ilEO/oNEkyMpMbXSoOSet/oBaInw3Cieku2s0hvGKYnRgbsBfUKmbsop1CFT/IGs9KnBFmVOMKQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757069288; c=relaxed/simple; bh=NmYKRAAmq6S9/OlEpo6/iUNc8QiidY1CJ9QsoS/Qjik=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=bBNZEwx/yqjQYeZMAmpVHWBrCFnz7ndIB+1q8gEJ3eMdmcSCPNVUpF5lxCj82kJ+LhqxVsJvc72PS7whRg4MviqwnONqIan+WSihW5GwnY7UCAxuWRl9vH0ZAINyOhL7R9rUmliuXVH47h151EYYgBVXjf3usA27LM9XAwe0LT0= 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-886e347d26bso264875139f.0 for ; Fri, 05 Sep 2025 03:48:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1757069285; x=1757674085; 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=8rYsdGmrF6iYwCUNd1971cTTtCRjr0XxFrK/sEXkTUg=; b=kHbhUYU8BKHUPiHOwzHJ1W6vcDg3w5ATkWgRnxZPUYj/n55C0OkasfKYQNK96BTQJ4 me+8ywyTXzjaibN/zmlOl5Tv7HKLWc69LKrcCNuSVyn5xwNR/QyjbmcOzZ7YGJS9fpG/ fp84qI63TCFp1Ox5W2bvxIZUnWwsndZefmb22ErGUamrmGK/QdMBNmjN6Heb50GMVMtl BnYhAw+ts2Iwi8DZeBsMxp05JFYJ1q67ck3ogfG3xQQCNoKRRs/MiMntrxyWQq2nTslN pcytoSIGzxjBpH3YsBVdCx63ldyOAGDcZ/0c5HGHLHjfM/QsJhEQp/8tDomyhk62grfV UfPw== X-Forwarded-Encrypted: i=1; AJvYcCVsF+WiWzNVLkgWLIdQslYxhTX+vJvxpbl3NbOm3g7KNKpslDaD6V8qPZeTO76As3ou6xvs3/ULA94HHdI=@vger.kernel.org X-Gm-Message-State: AOJu0YwpiQzVrBcI7tN3NBTa5qNHNQZ5vIPJLZ3h+Cqv/OxTDl2SBJYk DqY0YrDlkZhv/SM1I7Td+QsnbZ8NWPRhv84mEfEK4Nbf+WCkNOwqLGLFLanJkHKPWOrwEaLI6MD /Ly1lITacTMr4aQ1DxYhRkIW0NGPzlMom0UxbfBHkaSFxRdfKpISBbNngAww= X-Google-Smtp-Source: AGHT+IEEVqzPOhxCpPpHKlGrgT5f2MUOn4yyJ6sp4ZmwI2NMNbAtYmdpd/SxIRa4CgBpUT8AHoH6G+6763nAOE2lWUYDoaq6eth8 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:486:b0:883:fc4a:ea55 with SMTP id ca18e2360f4ac-88767e26eb8mr470147239f.3.1757069285644; Fri, 05 Sep 2025 03:48:05 -0700 (PDT) Date: Fri, 05 Sep 2025 03:48:05 -0700 In-Reply-To: <6177c4fd-227a-4dc1-89cc-eec44300f6fa@redhat.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68babfe5.a00a0220.eb3d.0011.GAE@google.com> Subject: Re: [syzbot] [io-uring?] KASAN: null-ptr-deref Read in io_sqe_buffer_register From: syzbot To: akpm@linux-foundation.org, axboe@kernel.dk, david@redhat.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by: syzbot+1ab243d3eebb2aabf4a4@syzkaller.appspotmail.com Tested-by: syzbot+1ab243d3eebb2aabf4a4@syzkaller.appspotmail.com Tested on: commit: bfd07c99 fixup: mm/gup: remove record_subpages() git tree: https://github.com/davidhildenbrand/linux.git nth_page console output: https://syzkaller.appspot.com/x/log.txt?x=15a5a134580000 kernel config: https://syzkaller.appspot.com/x/.config?x=366a4ffc91f4ab4 dashboard link: https://syzkaller.appspot.com/bug?extid=1ab243d3eebb2aabf4a4 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Note: no patches were applied. Note: testing is done by a robot and is best-effort only.