From nobody Fri Oct 8 01:16:46 2021 X-Original-To: dev-commits-src-branches@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 1FBF212D18D4; Fri, 8 Oct 2021 01:16:55 +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 4HQVdw6lPQz3tpK; Fri, 8 Oct 2021 01:16:52 +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 912931DFC1; Fri, 8 Oct 2021 01:16:46 +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 1981GkvO010981; Fri, 8 Oct 2021 01:16:46 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1981GkfR010980; Fri, 8 Oct 2021 01:16:46 GMT (envelope-from git) Date: Fri, 8 Oct 2021 01:16:46 GMT Message-Id: <202110080116.1981GkfR010980@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Kyle Evans Subject: git: b87ad4f2db6d - stable/12 - stand/efihttp: Work around a bug in edk2 http instance reconfiguration List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kevans X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: b87ad4f2db6dfc3b66464a689c399f666fa64d39 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/12 has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=b87ad4f2db6dfc3b66464a689c399f666fa64d39 commit b87ad4f2db6dfc3b66464a689c399f666fa64d39 Author: D Scott Phillips AuthorDate: 2020-09-09 16:35:51 +0000 Commit: Kyle Evans CommitDate: 2021-10-08 01:15:59 +0000 stand/efihttp: Work around a bug in edk2 http instance reconfiguration A bug in the EFI HTTP driver of TianoCore EDK2 causes memory corruption when an http instance that uses tls is reconfigured, leading to a crash. Work around this by forcing a new http instance for each request instead of reconfiguring the existing one. The upstream bug report is https://bugzilla.tianocore.org/show_bug.cgi?id=1917 (cherry picked from commit d455cd5ac36f4c1ac76f04e2c2bb4bfb00fe8bcd) --- stand/efi/libefi/efihttp.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/stand/efi/libefi/efihttp.c b/stand/efi/libefi/efihttp.c index 074c85dcdef0..05d338fbaf04 100644 --- a/stand/efi/libefi/efihttp.c +++ b/stand/efi/libefi/efihttp.c @@ -576,6 +576,14 @@ efihttp_fs_open(const char *path, struct open_file *f) */ err = _efihttp_fs_open(path, f); if (err != 0) { + /* + * Work around a bug in the EFI HTTP implementation which + * causes a crash if the http instance isn't torn down + * between requests. + * See https://bugzilla.tianocore.org/show_bug.cgi?id=1917 + */ + efihttp_dev_close(f); + efihttp_dev_open(f); path_slash = malloc(strlen(path) + 2); if (path_slash == NULL) return (ENOMEM); @@ -719,6 +727,14 @@ efihttp_fs_seek(struct open_file *f, off_t offset, int where) path = fh->path; fh->path = NULL; efihttp_fs_close(f); + /* + * Work around a bug in the EFI HTTP implementation which + * causes a crash if the http instance isn't torn down + * between requests. + * See https://bugzilla.tianocore.org/show_bug.cgi?id=1917 + */ + efihttp_dev_close(f); + efihttp_dev_open(f); err = efihttp_fs_open(path, f); free(path); if (err != 0)