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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AB3E8C433EF for ; Mon, 17 Jan 2022 22:56:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243710AbiAQW4M (ORCPT ); Mon, 17 Jan 2022 17:56:12 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:39612 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235916AbiAQW4L (ORCPT ); Mon, 17 Jan 2022 17:56:11 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 52750611EC for ; Mon, 17 Jan 2022 22:56:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C2023C36AE7; Mon, 17 Jan 2022 22:56:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642460169; bh=qvmPclBKDpmSxW957MvT1pemDeU3jcl+8YWb+YVrSO8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=o3ezhzSIXZqON9LT8WXqJ8NBBUmHy36LF3NDeiS6txvIi1gRIu3YqY2NPpk8cCxZs iERN3SjX2xxkRrueQRXrsg+gCrf8q2/ldFp2MWnRf8y0nuJIWEi237POaHra3nZcDT oUSC16vvJSSflW7t0Ta7Bs/HfZLUASR/lVlRwH5iP9Qf2hM96K1Pm+E2lFCENmOPAc tIb1iCd7OA4kddPHM3dbTL5QwCHfso0rVp+d4Cn8BNGNoKsl9QQ3bwHsYgppLhxrNx fhxNaN7OrEXuQd5cZGoesbV+2kmGJGzpeNg8Q+wVlaI7SHCpUrtRE26Rm9UDFjC4Xl 2t2A5iyWLaLog== Date: Mon, 17 Jan 2022 15:56:05 -0700 From: Nathan Chancellor To: Yinan Liu Cc: rostedt@goodmis.org, mingo@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] script/sorttable: fix some initialization problems Message-ID: References: <20220115225920.0e5939aa@gandalf.local.home> <20220117062344.15633-1-yinan@linux.alibaba.com> <20220117062344.15633-2-yinan@linux.alibaba.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220117062344.15633-2-yinan@linux.alibaba.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 17, 2022 at 02:23:44PM +0800, Yinan Liu wrote: > elf_mcount_loc and mcount_sort_thread definitions are not > initialized immediately within the function, which can cause > the judgment logic to use uninitialized values when the > initialization logic of subsequent code fails. > > Link: https://lkml.kernel.org/r/20211212113358.34208-2-yinan@linux.alibaba.com > > Fixes:72b3942a173c (scripts: ftrace - move the sort-processing in ftrace_init) This should be: Fixes: 72b3942a173c ("scripts: ftrace - move the sort-processing in ftrace_init") You can add an alias to always get the format right, like: $ git config --global alias.fixes 'show -s --format="Fixes: %h (\"%s\")"' $ git fixes 72b3942a173c387b27860ba1069636726e208777 Fixes: 72b3942a173c ("scripts: ftrace - move the sort-processing in ftrace_init") > Signed-off-by: Yinan Liu This resolves the warnings I reported and does not introduce any new ones. It seems reasonable to me. Reviewed-by: Nathan Chancellor Tested-by: Nathan Chancellor > --- > scripts/sorttable.h | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/scripts/sorttable.h b/scripts/sorttable.h > index 1e8b77928fa4..13ae3262ec96 100644 > --- a/scripts/sorttable.h > +++ b/scripts/sorttable.h > @@ -199,6 +199,8 @@ static int compare_extable(const void *a, const void *b) > return 0; > } > #ifdef MCOUNT_SORT_ENABLED > +pthread_t mcount_sort_thread; > + > struct elf_mcount_loc { > Elf_Ehdr *ehdr; > Elf_Shdr *init_data_sec; > @@ -282,10 +284,9 @@ static int do_sort(Elf_Ehdr *ehdr, > unsigned int shnum; > unsigned int shstrndx; > #ifdef MCOUNT_SORT_ENABLED > - struct elf_mcount_loc mstruct; > + struct elf_mcount_loc mstruct = {NULL, NULL, 0, 0}; Wonder if this would be better using either '= {}' or '= {0}'? > uint_t _start_mcount_loc = 0; > uint_t _stop_mcount_loc = 0; > - pthread_t mcount_sort_thread; > #endif > #if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED) > unsigned int orc_ip_size = 0; > -- > 2.19.1.6.gb485710b > >