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 B7C825C6451; Sat, 10 Apr 2021 01:25:15 +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 4FHHP74RG7z4rrr; Sat, 10 Apr 2021 01:25:15 +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 895F154C; Sat, 10 Apr 2021 01:25:15 +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 13A1PFd0043347; Sat, 10 Apr 2021 01:25:15 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 13A1PF9x043346; Sat, 10 Apr 2021 01:25:15 GMT (envelope-from git) Date: Sat, 10 Apr 2021 01:25:15 GMT Message-Id: <202104100125.13A1PF9x043346@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: 94172affa43a - main - amd64: clear debug registers on execing 32bit Linux 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: 94172affa43af15fe3b50293a96c292eca30c386 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=94172affa43af15fe3b50293a96c292eca30c386 commit 94172affa43af15fe3b50293a96c292eca30c386 Author: Konstantin Belousov AuthorDate: 2021-04-09 23:25:06 +0000 Commit: Konstantin Belousov CommitDate: 2021-04-10 01:25:02 +0000 amd64: clear debug registers on execing 32bit Linux binary Reviewed by: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D29687 --- sys/amd64/linux32/linux32_sysvec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/amd64/linux32/linux32_sysvec.c b/sys/amd64/linux32/linux32_sysvec.c index bb86baefaec4..3790d0fcb69c 100644 --- a/sys/amd64/linux32/linux32_sysvec.c +++ b/sys/amd64/linux32/linux32_sysvec.c @@ -722,6 +722,8 @@ linux_exec_setregs(struct thread *td, struct image_params *imgp, regs->tf_cs = _ucode32sel; regs->tf_rbx = (register_t)imgp->ps_strings; + x86_clear_dbregs(pcb); + fpstate_drop(td); /* Do full restore on return so that we can change to a different %cs */