From nobody Sat Oct 23 01:12:28 2021 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id CAACA180EFD1; Sat, 23 Oct 2021 01:12:29 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Hbjqx0g0lz3pg0; Sat, 23 Oct 2021 01:12:28 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id C98231913D; Sat, 23 Oct 2021 01:12:28 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 19N1CSIg051388; Sat, 23 Oct 2021 01:12:28 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 19N1CSb7051387; Sat, 23 Oct 2021 01:12:28 GMT (envelope-from git) Date: Sat, 23 Oct 2021 01:12:28 GMT Message-Id: <202110230112.19N1CSb7051387@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: 00df149452bf - stable/13 - crt_malloc: more accurate handling of mmap(2) failure List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 00df149452bfd1b9eee9acba842bb6bc874c5ae3 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=00df149452bfd1b9eee9acba842bb6bc874c5ae3 commit 00df149452bfd1b9eee9acba842bb6bc874c5ae3 Author: Konstantin Belousov AuthorDate: 2021-10-15 17:59:37 +0000 Commit: Konstantin Belousov CommitDate: 2021-10-22 23:32:27 +0000 crt_malloc: more accurate handling of mmap(2) failure PR: 259076 (cherry picked from commit 73dddffc3175581ba99f6ced9a2e508a0e880e59) --- libexec/rtld-elf/rtld_malloc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libexec/rtld-elf/rtld_malloc.c b/libexec/rtld-elf/rtld_malloc.c index 64218b5bb786..63fa6f5e2ee7 100644 --- a/libexec/rtld-elf/rtld_malloc.c +++ b/libexec/rtld-elf/rtld_malloc.c @@ -271,21 +271,21 @@ morepages(int n) } } - if (pagepool_start == MAP_FAILED) - pagepool_start = 0; offset = (uintptr_t)pagepool_start - rounddown2( (uintptr_t)pagepool_start, pagesz); - pagepool_start = mmap(0, n * pagesz, PROT_READ | PROT_WRITE, + addr = mmap(0, n * pagesz, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0); - if (pagepool_start == MAP_FAILED) { + if (addr == MAP_FAILED) { #ifdef IN_RTLD rtld_fdprintf(STDERR_FILENO, _BASENAME_RTLD ": morepages: " "cannot mmap anonymous memory: %s\n", rtld_strerror(errno)); #endif + pagepool_start = pagepool_end = NULL; return (0); } + pagepool_start = addr; pagepool_end = pagepool_start + n * pagesz; pagepool_start += offset;