From patchwork Wed Mar 24 00:38:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 42765 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 AAABA385BF9E; Wed, 24 Mar 2021 00:38:31 +0000 (GMT) X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from hera.aquilenet.fr (hera.aquilenet.fr [IPv6:2a0c:e300::1]) by sourceware.org (Postfix) with ESMTPS id 075493857829 for ; Wed, 24 Mar 2021 00:38:29 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 075493857829 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=ens-lyon.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=samuel.thibault@ens-lyon.org Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id 03E52662; Wed, 24 Mar 2021 01:38:28 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id YVmt3Y28vHSd; Wed, 24 Mar 2021 01:38:27 +0100 (CET) Received: from begin (unknown [IPv6:2a01:cb19:956:1b00:de41:a9ff:fe47:ec49]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 247D8237; Wed, 24 Mar 2021 01:38:27 +0100 (CET) Received: from samy by begin with local (Exim 4.94) (envelope-from ) id 1lOrXW-001Qnx-82; Wed, 24 Mar 2021 01:38:26 +0100 From: Samuel Thibault To: libc-alpha@sourceware.org, Adhemerval Zanella Subject: [PATCH] stdlib: Fix BZ #26241 testcase on GNU/Hurd Date: Wed, 24 Mar 2021 01:38:22 +0100 Message-Id: <20210324003822.341322-1-samuel.thibault@ens-lyon.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Spamd-Bar: +++++ X-Rspamd-Server: hera Authentication-Results: hera.aquilenet.fr X-Rspamd-Queue-Id: 03E52662 X-Spamd-Result: default: False [5.00 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; R_MISSING_CHARSET(2.50)[]; BROKEN_CONTENT_TYPE(1.50)[]; RCVD_COUNT_THREE(0.00)[3]; MID_CONTAINS_FROM(1.00)[]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[] X-Spam-Status: No, score=-12.1 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, SPF_HELO_PASS, SPF_NEUTRAL, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) 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: , Cc: commit-hurd@gnu.org Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" GNU/Hurd's readlink system call is partly implemented in userspace, which also allocates a buffer on the stack for the result, and thus needs one more path. Reviewed-by: Adhemerval Zanella --- stdlib/tst-canon-bz26341.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/stdlib/tst-canon-bz26341.c b/stdlib/tst-canon-bz26341.c index 6d054596b5..0ddd9aed15 100644 --- a/stdlib/tst-canon-bz26341.c +++ b/stdlib/tst-canon-bz26341.c @@ -72,10 +72,11 @@ do_realpath (void *arg) If realpath uses more than 2 * PATH_MAX plus some slack it will trigger a stackoverflow. */ + const size_t syscall_usage = 1 * PATH_MAX + 1024; const size_t realpath_usage = 2 * PATH_MAX + 1024; const size_t thread_usage = 1 * PATH_MAX + 1024; size_t stack_size = support_small_thread_stack_size () - - realpath_usage - thread_usage; + - syscall_usage - realpath_usage - thread_usage; char stack[stack_size]; char *resolved = stack + stack_size - thread_usage + 1024;