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 95F891C17 for ; Fri, 24 May 2024 03:51:41 +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=1716522703; cv=none; b=XTg16VP1ATA1k/pnDsdLfCk4H7cBvQ59YaMa1VqmC4dIivvDrkm9JF2Zxt+QeE3lHaMurCzVKd0ooe2Q8T9lpOV1vxHSn7Hsk7o/1H57LLObOqUwFROWfAYHzsr0tk0o3AhmyofabHldZwb0imG/qrURwAgLJDHHhhNsqzEqNzI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716522703; c=relaxed/simple; bh=U9TSv8E+s5XPWS4jn59GlUaI7uiL+0vhvxh45qs0HbE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=kC2MvvhJfmxCUgzfHOt8mOoVlpN4m4aWAOGkHqNKgUTzN8+r1pagD06f/kgdHCn9qlaWfU+AECslec5ZJw70pYhXUwjSYe+1UE5MSTm6Op6qF4pSxgJV2BkFrNgm3vDXztmyyLpx02UrEC64ifFSR0BitrO7YbF9vbnt/0ncNW8= 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-7e8dbc4a698so33207739f.0 for ; Thu, 23 May 2024 20:51:41 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716522700; x=1717127500; 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=e7FXaAOJ0JZIPMPON1PZBtTxOAtUEwk1xL+NQzn+0zI=; b=c0VETlbdn3GTamiAUNBgjKk23A1CU0QEJ+wxYPVOSSU5BRAcunSjVs4SVh9ro2x+qU HK9Ws34jQRoLRSbSwcgrQPSoljZIOieAbocv220PsUY45+H+ulS2FoSLK/GRGmOkXP/Y lD5/FPEL9KtZdb8NbP1P3wi81MkkCzbMm0IbMOUPjqyHB0YvuR/Me25UPgTTgCc6w/aO XidM/ruwY9VhebLIzt2Ti36DGk1Gm5lnQEUOlEyxhTGnCjpUO5GBQ+bn6wNVEKTHJU4P it+IXSmxRFLD8AwaPtyMOJrJwS6HT+DXHTdHqXA2/vqp75MAjGC1YNmytY4AkZMIYfOP opBg== X-Gm-Message-State: AOJu0Yx48YSgJ/YhQ/grvO8rnewOvcIWzc1I4EskWfmJdN//DgrpxN/R xNH+3z6bjKO8vR+6GA+MBte3GyZrWT7fAFvvdaaut9VZRLyrRuCk0SGjnKb2P2FQQHTMeU0LABO ENgrmEaeXiugM9o2B3G7CJhwzBiNVTisQlEe0aIsbf5CZZfFROnK2M6c= X-Google-Smtp-Source: AGHT+IG1N4TA8P4AYjDW2OGzbruuIYXYUeyYuB/y2ddkmotIYuMA9o39T+W9DYzhcL34PosatX8ZW6DGpLY5lhFMA01R59qN/Y2o Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:154c:b0:36c:4c63:9c93 with SMTP id e9e14a558f8ab-3737ad8d851mr836545ab.3.1716522700814; Thu, 23 May 2024 20:51:40 -0700 (PDT) Date: Thu, 23 May 2024 20:51:40 -0700 In-Reply-To: <0000000000002fd2de0618de2e65@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d4d13806192b156e@google.com> Subject: Re: [syzbot] [syzbot] [fs?] general protection fault in iter_file_splice_write From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [syzbot] [fs?] general protection fault in iter_file_splice_write Author: lizhi.xu@windriver.com #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 33e02dc69afb diff --git a/fs/netfs/direct_write.c b/fs/netfs/direct_write.c index 608ba6416919..d74761fb1876 100644 --- a/fs/netfs/direct_write.c +++ b/fs/netfs/direct_write.c @@ -69,7 +69,7 @@ static ssize_t netfs_unbuffered_write_iter_locked(struct kiocb *iocb, struct iov */ if (async || user_backed_iter(iter)) { n = netfs_extract_user_iter(iter, len, &wreq->iter, 0); - if (n < 0) { + if (n <= 0) { ret = n; goto out; }