From owner-dev-commits-src-branches@freebsd.org Mon May 24 14:06:21 2021 Return-Path: Delivered-To: dev-commits-src-branches@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 438FE63555F; Mon, 24 May 2021 14:06:21 +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 4FpfC10jSMz3q0v; Mon, 24 May 2021 14:06:21 +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 01E6B399A; Mon, 24 May 2021 14:06:21 +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 14OE6KBf093365; Mon, 24 May 2021 14:06:20 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 14OE6Kvo093364; Mon, 24 May 2021 14:06:20 GMT (envelope-from git) Date: Mon, 24 May 2021 14:06:20 GMT Message-Id: <202105241406.14OE6Kvo093364@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mark Johnston Subject: git: ef46ce0e29ac - stable/12 - linux: Fix a mistake in commit fb58045145 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: ef46ce0e29ac89daabe3e65efacd57eff02172c1 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 May 2021 14:06:21 -0000 The branch stable/12 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=ef46ce0e29ac89daabe3e65efacd57eff02172c1 commit ef46ce0e29ac89daabe3e65efacd57eff02172c1 Author: Mark Johnston AuthorDate: 2021-05-17 02:17:53 +0000 Commit: Mark Johnston CommitDate: 2021-05-24 14:06:16 +0000 linux: Fix a mistake in commit fb58045145 The change to futex_andl_smap() should have ordered stac before the load from a user address, otherwise it does not fix anything. Fixes: fb58045145 ("linux: Fix SMAP-enabled futex routines") Sponsored by: The FreeBSD Foundation (cherry picked from commit 60cb98a1bd2e4ea8fda532261f7211f5d4eba9c0) --- sys/amd64/linux32/linux32_support.s | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/amd64/linux32/linux32_support.s b/sys/amd64/linux32/linux32_support.s index f3ec3bd8c776..da076010c13c 100644 --- a/sys/amd64/linux32/linux32_support.s +++ b/sys/amd64/linux32/linux32_support.s @@ -168,8 +168,8 @@ ENTRY(futex_andl_smap) movq $VM_MAXUSER_ADDRESS-4,%rax cmpq %rax,%rsi ja futex_fault - movl (%rsi),%eax stac + movl (%rsi),%eax 1: movl %eax,%ecx andl %edi,%ecx #ifdef SMP