From owner-dev-commits-src-main@freebsd.org Sat Apr 10 01:25:15 2021 Return-Path: Delivered-To: dev-commits-src-main@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 F42065C6551; Sat, 10 Apr 2021 01:25:14 +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 4FHHP63vF0z4rcM; Sat, 10 Apr 2021 01:25:14 +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 68D1F3BD; Sat, 10 Apr 2021 01:25:14 +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 13A1PEPO043326; Sat, 10 Apr 2021 01:25:14 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 13A1PEfD043325; Sat, 10 Apr 2021 01:25:14 GMT (envelope-from git) Date: Sat, 10 Apr 2021 01:25:14 GMT Message-Id: <202104100125.13A1PEfD043325@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: d50adfec9ee7 - main - amd64: clear debug registers on execing 32bit native binary 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/main X-Git-Reftype: branch X-Git-Commit: d50adfec9ee73e88e8d365525f1acef2c1db798a Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-main@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for the main branch of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 10 Apr 2021 01:25:15 -0000 The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=d50adfec9ee73e88e8d365525f1acef2c1db798a commit d50adfec9ee73e88e8d365525f1acef2c1db798a Author: Konstantin Belousov AuthorDate: 2021-04-09 23:23:54 +0000 Commit: Konstantin Belousov CommitDate: 2021-04-10 01:25:02 +0000 amd64: clear debug registers on execing 32bit native binary Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29687 --- sys/amd64/ia32/ia32_signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/amd64/ia32/ia32_signal.c b/sys/amd64/ia32/ia32_signal.c index 51dd1f38090f..c114cf1d240a 100644 --- a/sys/amd64/ia32/ia32_signal.c +++ b/sys/amd64/ia32/ia32_signal.c @@ -968,6 +968,8 @@ ia32_setregs(struct thread *td, struct image_params *imgp, uintptr_t stack) regs->tf_gs = _ugssel; regs->tf_flags = TF_HASSEGS; + x86_clear_dbregs(pcb); + fpstate_drop(td); /* Return via doreti so that we can change to a different %cs */