From nobody Mon Nov 01 14:33:10 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 7546C182DAFC; Mon, 1 Nov 2021 14:33:14 +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 4Hjb9j6Dr3z3s8s; Mon, 1 Nov 2021 14:33:13 +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 7F8CD13587; Mon, 1 Nov 2021 14:33:10 +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 1A1EXAWN021605; Mon, 1 Nov 2021 14:33:10 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1A1EXAo6021604; Mon, 1 Nov 2021 14:33:10 GMT (envelope-from git) Date: Mon, 1 Nov 2021 14:33:10 GMT Message-Id: <202111011433.1A1EXAo6021604@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: ab77265f883a - stable/13 - amd64: Mark the trapframe as initialized in trap() 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: markj X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: ab77265f883ad5ddb71d41432ffa77401608e1b1 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=ab77265f883ad5ddb71d41432ffa77401608e1b1 commit ab77265f883ad5ddb71d41432ffa77401608e1b1 Author: Mark Johnston AuthorDate: 2021-07-10 00:38:03 +0000 Commit: Mark Johnston CommitDate: 2021-11-01 14:06:39 +0000 amd64: Mark the trapframe as initialized in trap() Otherwise KASAN may generate false positives if the trapframe was written into a poisoned region of the stack. Reported by: pho Sponsored by: The FreeBSD Foundation (cherry picked from commit f08f0ae5247ab31de58bda0817e74ccc1a3a5e95) --- sys/amd64/amd64/trap.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sys/amd64/amd64/trap.c b/sys/amd64/amd64/trap.c index 942c99c4826e..55649687ce50 100644 --- a/sys/amd64/amd64/trap.c +++ b/sys/amd64/amd64/trap.c @@ -54,6 +54,7 @@ __FBSDID("$FreeBSD$"); #include "opt_kdb.h" #include +#include #include #include #include @@ -227,6 +228,8 @@ trap(struct trapframe *frame) p = td->td_proc; dr6 = 0; + kasan_mark(frame, sizeof(*frame), sizeof(*frame), 0); + VM_CNT_INC(v_trap); type = frame->tf_trapno;