From patchwork Thu Dec 9 05:49:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rongwei Wang X-Patchwork-Id: 48700 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id BCBF03858C39 for ; Thu, 9 Dec 2021 06:13:10 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BCBF03858C39 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1639030390; bh=qA3gq1wzvitnimizKa1fDlA0v0O67gIEo7m/fAKoVUY=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=wiUUpKA/TfGmNiMKD2KmAtv8TUirq5h990W/boavxl5/XjUG401zvnuEOR7zyoHWN l0+1V9g3wVYnKpEPzvVtoSzDDABV/OU/+p6Rgw4rtyl3jXnCWznCHNc3qda/d5GqjB FVDryx2tzA2aT0a0oJFJkee4zk2ZvCSO5Xv2Bx4Y= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from out30-54.freemail.mail.aliyun.com (out30-54.freemail.mail.aliyun.com [115.124.30.54]) by sourceware.org (Postfix) with ESMTPS id EFD5F385842C for ; Thu, 9 Dec 2021 05:51:16 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org EFD5F385842C X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R191e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04423; MF=rongwei.wang@linux.alibaba.com; NM=1; PH=DS; RN=5; SR=0; TI=SMTPD_---0V-0v9zm_1639029073; Received: from localhost.localdomain(mailfrom:rongwei.wang@linux.alibaba.com fp:SMTPD_---0V-0v9zm_1639029073) by smtp.aliyun-inc.com(127.0.0.1); Thu, 09 Dec 2021 13:51:14 +0800 To: libc-alpha@sourceware.org, hjl.tools@gmail.com, fweimer@redhat.com Subject: [PATCH v2 0/1] fix p_align on PT_LOAD segment in DSO isn't honored Date: Thu, 9 Dec 2021 13:49:11 +0800 Message-Id: <20211209054912.55907-1-rongwei.wang@linux.alibaba.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 X-Spam-Status: No, score=-14.0 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, UNPARSEABLE_RELAY, USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Rongwei Wang via Libc-alpha From: Rongwei Wang Reply-To: Rongwei Wang Cc: xuyu@linux.alibaba.com, gavin.dg@linux.alibaba.com Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" Hi This patch mainly to fix a reported bug: "p_align on PT_LOAD segment in DSO isn't honored" https://sourceware.org/bugzilla/show_bug.cgi?id=28676 A testcase had been builded by H.J.Lu: https://sourceware.org/bugzilla/attachment.cgi?id=13838 And in Patch 1/1, I also show a simple testcase which modified from H.J.Lu. And a similar bug in ELF binary was also reported: https://bugzilla.kernel.org/show_bug.cgi?id=215275 A related fix patch could been found: https://lore.kernel.org/linux-mm/20211009092658.59665-4-rongwei.wang@linux.alibaba.com/ Originally, we send this patch for introducing .text hugepages, was not aware of it's bug. And now, I am not sure whether kernel maintainer will regards it as a bug. But it deserved try again. Thanks. Changelog: RFC/v1 -> v2 - Patch "elf: align the mapping address of LOAD segments with p_align" fix coding format and add testcase in commit. RFC link: https://patchwork.sourceware.org/project/glibc/patch/20211204045848.71105-2-rongwei.wang@linux.alibaba.com/ Rongwei Wang (1): elf: align the mapping address of LOAD segments with p_align elf/dl-load.c | 1 + elf/dl-map-segments.h | 63 +++++++++++++++++++++++++++++++++++++++---- include/link.h | 3 +++ 3 files changed, 62 insertions(+), 5 deletions(-)