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GET /api/1.2/patches/815535/?format=api
{ "id": 815535, "url": "http://patchwork.ozlabs.org/api/1.2/patches/815535/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/patch/alpine.DEB.2.20.1709191345040.2962@digraph.polyomino.org.uk/", "project": { "id": 41, "url": "http://patchwork.ozlabs.org/api/1.2/projects/41/?format=api", "name": "GNU C Library", "link_name": "glibc", "list_id": "libc-alpha.sourceware.org", "list_email": "libc-alpha@sourceware.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<alpine.DEB.2.20.1709191345040.2962@digraph.polyomino.org.uk>", "list_archive_url": null, "date": "2017-09-19T13:46:49", "name": "Fix hppa/ia64/microblaze executable stack default (bug 22156)", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ef22f896a5f8ec34843c3cfe752bc9c87cb8b59f", "submitter": { "id": 4349, "url": "http://patchwork.ozlabs.org/api/1.2/people/4349/?format=api", "name": "Joseph Myers", "email": "joseph@codesourcery.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/glibc/patch/alpine.DEB.2.20.1709191345040.2962@digraph.polyomino.org.uk/mbox/", "series": [ { "id": 3880, "url": "http://patchwork.ozlabs.org/api/1.2/series/3880/?format=api", "web_url": "http://patchwork.ozlabs.org/project/glibc/list/?series=3880", "date": "2017-09-19T13:46:49", "name": "Fix hppa/ia64/microblaze executable stack default (bug 22156)", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/3880/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/815535/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/815535/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<libc-alpha-return-84736-incoming=patchwork.ozlabs.org@sourceware.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "mailing list libc-alpha@sourceware.org" ], "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-84736-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"IlnAE1bh\"; dkim-atps=neutral", "sourceware.org; auth=none" ], "Received": [ "from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xxPLh0QpBz9t16\n\tfor <incoming@patchwork.ozlabs.org>;\n\tTue, 19 Sep 2017 23:47:07 +1000 (AEST)", "(qmail 6068 invoked by alias); 19 Sep 2017 13:47:01 -0000", "(qmail 5822 invoked by uid 89); 19 Sep 2017 13:47:01 -0000" ], "DomainKey-Signature": "a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:message-id\n\t:mime-version:content-type; q=dns; s=default; b=UYqeeHHhd3j5t9ZU\n\t3LeiciV7TYJTjPLqDlvQInWHgIIJ+XMdLfi/L6DWCpdPOA3y635iA+3Tfi68igcs\n\tyV+Swf8QCe0Esq4jakjGd0ta0sL5ip1U57pnU7whnABSMBXcVRbYnwa8m2/2uwOV\n\tjhLmceARVpnM2s2p/N5XDIQKAf8=", "DKIM-Signature": "v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:message-id\n\t:mime-version:content-type; s=default; bh=ohi7AlquQDcF1LUAF8y6Te\n\tyEUvM=; b=IlnAE1bhbqd+PIi8NoXizPQj42ezi8vlV4LWv9DDTua9vlN8UncxH/\n\t6HPV6Hag2CQntIESkhTOEe7Wg6P0Az+vmFZ8YyvN1UZGexXHKSehEO9Wc9P+wqTD\n\tOt9oRpl8xzyBdbo2kzrCz4uci6aCuOX5ZR+iExXNB/TN9amgtjO6U=", "Mailing-List": "contact libc-alpha-help@sourceware.org; run by ezmlm", "Precedence": "bulk", "List-Id": "<libc-alpha.sourceware.org>", "List-Unsubscribe": "<mailto:libc-alpha-unsubscribe-incoming=patchwork.ozlabs.org@sourceware.org>", "List-Subscribe": "<mailto:libc-alpha-subscribe@sourceware.org>", "List-Archive": "<http://sourceware.org/ml/libc-alpha/>", "List-Post": "<mailto:libc-alpha@sourceware.org>", "List-Help": "<mailto:libc-alpha-help@sourceware.org>,\n\t<http://sourceware.org/ml/#faqs>", "Sender": "libc-alpha-owner@sourceware.org", "X-Virus-Found": "No", "X-Spam-SWARE-Status": "No, score=-24.5 required=5.0 tests=AWL, BAYES_00,\n\tGIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3,\n\tRCVD_IN_DNSWL_NONE, SPF_PASS,\n\tURIBL_RED autolearn=ham version=3.3.2 spammy=", "X-HELO": "relay1.mentorg.com", "Date": "Tue, 19 Sep 2017 13:46:49 +0000", "From": "Joseph Myers <joseph@codesourcery.com>", "To": "<libc-alpha@sourceware.org>", "CC": "<vapier@gentoo.org>, <carlos@redhat.com>, <dave.anglin@bell.net>", "Subject": "Fix hppa/ia64/microblaze executable stack default (bug 22156)", "Message-ID": "<alpine.DEB.2.20.1709191345040.2962@digraph.polyomino.org.uk>", "User-Agent": "Alpine 2.20 (DEB 67 2015-01-07)", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"US-ASCII\"", "X-ClientProxiedBy": "svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) To\n\tsvr-ies-mbx-01.mgc.mentorg.com (139.181.222.1)" }, "content": "As per https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01220.html hppa,\nia64 and microblaze default to non-executable stacks in the Linux\nkernel. glibc however defines DEFAULT_STACK_PERMS to include PF_X for\nthose architectures, meaning (a) elf/check-execstack fails and (b)\n(from code inspection, not tested, but this is why I think this is a\nuser-visible bug) thread stacks are unnecessarily mapped with execute\npermission. This patch fixes the DEFAULT_STACK_PERMS definitions in\nquestion.\n\nTested (compilation only) with build-many-glibcs.py for those\nconfigurations. This fixes the check-execstack failure (hppa still\nhas a check-textrel failure as the only remaining issue stopping that\narchitecture having clean build-many-glibcs.py results; hopefully\narchitecture maintainers can help resolve that).\n\n2017-09-19 Joseph Myers <joseph@codesourcery.com>\n\n\t[BZ #22156]\n\t* sysdeps/hppa/stackinfo.h (DEFAULT_STACK_PERMS): Remove PF_X.\n\t* sysdeps/ia64/stackinfo.h (DEFAULT_STACK_PERMS): Likewise.\n\t* sysdeps/microblaze/stackinfo.h (DEFAULT_STACK_PERMS): Likewise.", "diff": "diff --git a/sysdeps/hppa/stackinfo.h b/sysdeps/hppa/stackinfo.h\nindex 83b1da1..a3af38f 100644\n--- a/sysdeps/hppa/stackinfo.h\n+++ b/sysdeps/hppa/stackinfo.h\n@@ -23,9 +23,8 @@\n \n #include <elf.h>\n \n-/* Default to an executable stack. PF_X can be overridden if PT_GNU_STACK is\n- * present, but it is presumed absent. */\n-#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X)\n+/* Default to a non-executable stack. */\n+#define DEFAULT_STACK_PERMS (PF_R|PF_W)\n \n /* On PA the stack grows up. */\n #define _STACK_GROWS_UP\t1\ndiff --git a/sysdeps/ia64/stackinfo.h b/sysdeps/ia64/stackinfo.h\nindex 87e1448..a50e727 100644\n--- a/sysdeps/ia64/stackinfo.h\n+++ b/sysdeps/ia64/stackinfo.h\n@@ -27,8 +27,7 @@\n here. */\n #define _STACK_GROWS_DOWN\t1\n \n-/* Default to an executable stack. PF_X can be overridden if PT_GNU_STACK is\n- * present, but it is presumed absent. */\n-#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X)\n+/* Default to a non-executable stack. */\n+#define DEFAULT_STACK_PERMS (PF_R|PF_W)\n \n #endif\t/* stackinfo.h */\ndiff --git a/sysdeps/microblaze/stackinfo.h b/sysdeps/microblaze/stackinfo.h\nindex 3062b1e..05755c7 100644\n--- a/sysdeps/microblaze/stackinfo.h\n+++ b/sysdeps/microblaze/stackinfo.h\n@@ -27,8 +27,7 @@\n /* On MicroBlaze the stack grows down. */\n # define _STACK_GROWS_DOWN\t1\n \n-/* Default to an executable stack. PF_X can be overridden if PT_GNU_STACK is\n- * present, but it is presumed absent. */\n-# define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X)\n+/* Default to a non-executable stack. */\n+# define DEFAULT_STACK_PERMS (PF_R|PF_W)\n \n #endif\t/* stackinfo.h. */\n", "prefixes": [] }