From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29840C49ED7 for ; Mon, 16 Sep 2019 07:41:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 04C33206A4 for ; Mon, 16 Sep 2019 07:41:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729442AbfIPHl2 (ORCPT ); Mon, 16 Sep 2019 03:41:28 -0400 Received: from mx2.suse.de ([195.135.220.15]:52784 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728139AbfIPHl2 (ORCPT ); Mon, 16 Sep 2019 03:41:28 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 00747B639; Mon, 16 Sep 2019 07:41:26 +0000 (UTC) From: Andreas Schwab To: Nicolas Ferre Subject: macb: inconsistent Rx descriptor chain after OOM CC: netdev@vger.kernel.org X-Yow: The Korean War must have been fun. Date: Mon, 16 Sep 2019 09:41:26 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When there is an OOM situation, the macb driver cannot recover from it: [245622.872993] macb 10090000.ethernet eth0: Unable to allocate sk_buff [245622.891438] macb 10090000.ethernet eth0: inconsistent Rx descriptor chain After that, the interface is dead. Since this system is using NFS root, it then stalled as a whole. Andreas. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different."