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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 0DD89C282C8 for ; Mon, 28 Jan 2019 15:59:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0EF721916 for ; Mon, 28 Jan 2019 15:59:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691162; bh=yzX3yOPfXHZAsRv4i1lqHC0NmaDrNzvgnQSWp1yz1Es=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=rq0AsADvV3m3V63Tim9u/W/k1PZLRzbHdcbsGYAUZLd+Cr/IF8GfDleCEWloB+tyV WwUIVEH7e8VTuca1vCU1xUMBSrC/roKeNeJrwGacOiejBm5qtUqDb4fU7xeYnH+Ooh kYmodj1JnO4PuMYrhX2q89DFY7jnAWB7Z3rlII1Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730556AbfA1P7O (ORCPT ); Mon, 28 Jan 2019 10:59:14 -0500 Received: from mail.kernel.org ([198.145.29.99]:44608 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727635AbfA1P7O (ORCPT ); Mon, 28 Jan 2019 10:59:14 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6030C21848; Mon, 28 Jan 2019 15:59:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548691153; bh=yzX3yOPfXHZAsRv4i1lqHC0NmaDrNzvgnQSWp1yz1Es=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rVpAGAIeSmpNzdjQxtE04vD/8vmNoHChoLgDl3Q5z/7RG0tP8QJCC0fpHV0dnoI+p c1UkWhj8TlSffDKcMRLN4+z5vbRw9BoU0/uHvkGlihY3jB9q3t1rOOU8hzht53e7/9 f4RZbBEuoReiYN0GpBMAjcHNmqx9W+aMQUIrvUCo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Du Changbin , Kieran Bingham , Jan Kiszka , Jason Wessel , Daniel Thompson , Andrew Morton , Linus Torvalds , Sasha Levin Subject: [PATCH AUTOSEL 4.20 303/304] scripts/gdb: fix lx-version string output Date: Mon, 28 Jan 2019 10:43:40 -0500 Message-Id: <20190128154341.47195-303-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128154341.47195-1-sashal@kernel.org> References: <20190128154341.47195-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Du Changbin [ Upstream commit b058809bfc8faeb7b7cae047666e23375a060059 ] A bug is present in GDB which causes early string termination when parsing variables. This has been reported [0], but we should ensure that we can support at least basic printing of the core kernel strings. For current gdb version (has been tested with 7.3 and 8.1), 'lx-version' only prints one character. (gdb) lx-version L(gdb) This can be fixed by casting 'linux_banner' as (char *). (gdb) lx-version Linux version 4.19.0-rc1+ (changbin@acer) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21 SMP Sat Sep 1 21:43:30 CST 2018 [0] https://sourceware.org/bugzilla/show_bug.cgi?id=20077 [kbingham@kernel.org: add detail to commit message] Link: http://lkml.kernel.org/r/20181111162035.8356-1-kieran.bingham@ideasonboard.com Fixes: 2d061d999424 ("scripts/gdb: add version command") Signed-off-by: Du Changbin Signed-off-by: Kieran Bingham Acked-by: Jan Kiszka Cc: Jan Kiszka Cc: Jason Wessel Cc: Daniel Thompson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- scripts/gdb/linux/proc.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/gdb/linux/proc.py b/scripts/gdb/linux/proc.py index 086d27223c0c..0aebd7565b03 100644 --- a/scripts/gdb/linux/proc.py +++ b/scripts/gdb/linux/proc.py @@ -41,7 +41,7 @@ class LxVersion(gdb.Command): def invoke(self, arg, from_tty): # linux_banner should contain a newline - gdb.write(gdb.parse_and_eval("linux_banner").string()) + gdb.write(gdb.parse_and_eval("(char *)linux_banner").string()) LxVersion() -- 2.19.1