From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 65FA5237A38; Mon, 13 Jan 2025 13:42:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736775767; cv=pass; b=Ajmz2+Z9BFpizpS1hETF9cRjgJSm8QVKhl4EHaTZcoONUJYVZzPqCjnNDCzbnetHEC3ewE6gh4l8q2uDHUApVnphYejyR62Gqer0HdUvwInFyeo9kn4QE3LaF9O4JyED3D1q9+vJ+6j2l/7yIekZlVWpgna2/inkTZ1YaMvrt3A= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736775767; c=relaxed/simple; bh=yJZLztpcvZRwJPasIUbRVL9hobOTqVHE9FThozuqw+U=; h=Message-ID:Date:MIME-Version:Cc:To:From:Subject:Content-Type; b=X14GxuCIlnuvAL/J+TPivlZQhCR7Tu1crdiqEqWY/lvJy3Z7ufncm2+zviwU+aVngWVbz/nizKwwRkl39PGo6EGbDxTrBJrWAcshAx90AUPitivE18hSewFgKC5i4nFE3klEpPLdufBGTmu/K4T+K2sCmrK2qDPC/GRXtBJo3/c= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=Usama.Anjum@collabora.com header.b=cw2GC91h; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=Usama.Anjum@collabora.com header.b="cw2GC91h" ARC-Seal: i=1; a=rsa-sha256; t=1736775751; cv=none; d=zohomail.com; s=zohoarc; b=KwBnDVoDCxViRUdvtlOV5/kQVXZclKdqPzTb25tYh2ckFoLoC4yQHqll+M35gmScs2xKwyww2DVGVxpCW/5hMJCiKANgRWALlsibZCNcm3GECqIc6sDrqHVKqYrpVnfzFbA+Ov0OLzZeRX4WlUuwnlS1YmJR3t7sT6CzJhWd1QQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1736775751; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=/YPpR/aDr4AiUnIfUw8D/cQx38dc7GnQBiitLa2av1g=; b=Bg0nPqLxzZ3wCIev69riMKEpylECZhx9Jj+2lKSILtDzJDh/ZGJuy/xLf+lEJouZkeN6LpoDJrppmQWc3vIfQV1U+S3D8hWerupJW5kcz/AHWmJqlyjzJGNfqJ1Ay317Kk2zgTNCU5eYrFj7Zb5EENHK/UVKUhCtgfqB2hpdEN4= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=Usama.Anjum@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1736775751; s=zohomail; d=collabora.com; i=Usama.Anjum@collabora.com; h=Message-ID:Date:Date:MIME-Version:Cc:Cc:To:To:From:From:Subject:Subject:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=/YPpR/aDr4AiUnIfUw8D/cQx38dc7GnQBiitLa2av1g=; b=cw2GC91hUBF59hb7yBsNKAm0v5G4ycw4oP4k2ALJ5JnioOAQH+fsEzXTdatMNN3d VdpzdYltflHR6Up9VnIVAoUaa0hCQYVrj4m5G+E/q8UtW0WDLZ6r1BpsYzS5XmrReJD gGvU4ha5SKuKlJSplsKPYDIcGenmAtm1WAezXpkM= Received: by mx.zohomail.com with SMTPS id 1736775749560835.4250143330927; Mon, 13 Jan 2025 05:42:29 -0800 (PST) Message-ID: <8b118e93-c159-40f0-b89a-817752d11627@collabora.com> Date: Mon, 13 Jan 2025 18:42:55 +0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: Usama.Anjum@collabora.com Content-Language: en-US To: linux-debuggers@vger.kernel.org, linux-serial@vger.kernel.org, kgdb-bugreport@lists.sourceforge.net, LKML From: Muhammad Usama Anjum Subject: KGDB/KDB running over internet as serial connection isn't possible Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ZohoMailClient: External Hi, I'm new to trying KGDB/KDB. My test machine doesn't have serial port. I've been trying to run it over internet. I get following dmesg log: KGDB: Registered I/O driver kgdboc On test machine command line: kgdboc=kbd sudo sh -c "echo g > /proc/sysrq-trigger" # Launch KGDB System freezes at this point meaning the debugger got activated correctly. But I'm unable to connect from host side: gdb vmlinux set debug remote 1 target remote :2012 I may be missing something trivial. Please can someone point/correct me how to connect correctly? PS: kgdboe [2] seems like a out of tree module for help. But it doesn't seem to be supported anymore. Is it possible to connect from another machine over internet and debug the target? [1] https://docs.kernel.org/dev-tools/kgdb.html [2] https://github.com/sysprogs/kgdboe -- BR, Muhammad Usama Anjum