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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 772F8C4363D for ; Tue, 22 Sep 2020 14:28:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2DCF020C09 for ; Tue, 22 Sep 2020 14:28:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="FsLXHca/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726748AbgIVO22 (ORCPT ); Tue, 22 Sep 2020 10:28:28 -0400 Received: from smtp-fw-6001.amazon.com ([52.95.48.154]:47901 "EHLO smtp-fw-6001.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726494AbgIVO22 (ORCPT ); Tue, 22 Sep 2020 10:28:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1600784908; x=1632320908; h=to:cc:from:subject:message-id:date:mime-version: content-transfer-encoding; bh=chOAFRzhLpeku7MlIinWALn5eKMG3/rsd9Ptm05qR9U=; b=FsLXHca/mx2WHXGG3Rq3p/W5uj/whFqsHZbgy26NNKzq7vFKpr4PCeiA AIFzVL0HLn3V5d7OHx41W3RAXsOQsvChNXwrMpiyGVpZBYgCr0v4RsJGc +otaWyaNZeg+IQJiK7DmIye5Aua2ugtJiNVvImTk97QLcOYj5YVLt2EYC 0=; X-IronPort-AV: E=Sophos;i="5.77,291,1596499200"; d="scan'208";a="56974341" Received: from iad12-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-2a-69849ee2.us-west-2.amazon.com) ([10.43.8.6]) by smtp-border-fw-out-6001.iad6.amazon.com with ESMTP; 22 Sep 2020 14:28:26 +0000 Received: from EX13MTAUWC002.ant.amazon.com (pdx4-ws-svc-p6-lb7-vlan2.pdx.amazon.com [10.170.41.162]) by email-inbound-relay-2a-69849ee2.us-west-2.amazon.com (Postfix) with ESMTPS id BDB27A0669; Tue, 22 Sep 2020 14:28:24 +0000 (UTC) Received: from EX13D12UWC002.ant.amazon.com (10.43.162.253) by EX13MTAUWC002.ant.amazon.com (10.43.162.240) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 22 Sep 2020 14:28:24 +0000 Received: from [10.88.31.162] (10.43.161.85) by EX13D12UWC002.ant.amazon.com (10.43.162.253) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 22 Sep 2020 14:28:23 +0000 To: CC: Jan Kiszka , Kieran Bingham From: George Prekas Subject: [PATCH] scripts/gdb: fix list_for_each Message-ID: <3b382958-9f1d-a3d2-a239-09ba084227e6@amazon.com> Date: Tue, 22 Sep 2020 09:28:21 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Originating-IP: [10.43.161.85] X-ClientProxiedBy: EX13D01UWA003.ant.amazon.com (10.43.160.107) To EX13D12UWC002.ant.amazon.com (10.43.162.253) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the next pointer is NULL, list_for_each gets stuck in an infinite loop. Signed-off-by: George Prekas ---  scripts/gdb/linux/lists.py | 2 ++  1 file changed, 2 insertions(+) diff --git a/scripts/gdb/linux/lists.py b/scripts/gdb/linux/lists.py index c487ddf09d38..424a91c1aa8b 100644 --- a/scripts/gdb/linux/lists.py +++ b/scripts/gdb/linux/lists.py @@ -27,6 +27,8 @@ def list_for_each(head):          raise TypeError("Must be struct list_head not {}"                             .format(head.type)) +    if head['next'] == 0: +        return      node = head['next'].dereference()      while node.address != head.address:          yield node.address -- 2.24.3.AMZN