From owner-svn-src-stable@freebsd.org Sat Aug 15 17:02:23 2020 Return-Path: Delivered-To: svn-src-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id EE8663BF7CA; Sat, 15 Aug 2020 17:02:23 +0000 (UTC) (envelope-from trasz@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BTRSH67kVz4Q1G; Sat, 15 Aug 2020 17:02:23 +0000 (UTC) (envelope-from trasz@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id B54EC224E8; Sat, 15 Aug 2020 17:02:23 +0000 (UTC) (envelope-from trasz@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 07FH2N5B026955; Sat, 15 Aug 2020 17:02:23 GMT (envelope-from trasz@FreeBSD.org) Received: (from trasz@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 07FH2NFt026954; Sat, 15 Aug 2020 17:02:23 GMT (envelope-from trasz@FreeBSD.org) Message-Id: <202008151702.07FH2NFt026954@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: trasz set sender to trasz@FreeBSD.org using -f From: Edward Tomasz Napierala Date: Sat, 15 Aug 2020 17:02:23 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r364258 - stable/12/sys/amd64/linux X-SVN-Group: stable-12 X-SVN-Commit-Author: trasz X-SVN-Commit-Paths: stable/12/sys/amd64/linux X-SVN-Commit-Revision: 364258 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 15 Aug 2020 17:02:24 -0000 Author: trasz Date: Sat Aug 15 17:02:23 2020 New Revision: 364258 URL: https://svnweb.freebsd.org/changeset/base/364258 Log: MFC r351783: Unbreak Linux binaries linked against new glibc, such as the ones from recent Ubuntu versions. Without it they segfault on startup. Sponsored by: The FreeBSD Foundation Modified: stable/12/sys/amd64/linux/linux_sysvec.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/amd64/linux/linux_sysvec.c ============================================================================== --- stable/12/sys/amd64/linux/linux_sysvec.c Sat Aug 15 16:48:58 2020 (r364257) +++ stable/12/sys/amd64/linux/linux_sysvec.c Sat Aug 15 17:02:23 2020 (r364258) @@ -357,6 +357,12 @@ linux_copyout_strings(struct image_params *imgp) */ vectp -= imgp->args->argc + 1 + imgp->args->envc + 1; + /* + * Starting with 2.24, glibc depends on a 16-byte stack alignment. + * One "long argc" will be prepended later. + */ + vectp = (char **)((((uintptr_t)vectp + 8) & ~0xF) - 8); + /* vectp also becomes our initial stack base. */ stack_base = (register_t *)vectp;