From owner-svn-src-head@freebsd.org Mon Sep 21 19:03:08 2020 Return-Path: Delivered-To: svn-src-head@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 945653F96B9; Mon, 21 Sep 2020 19:03:08 +0000 (UTC) (envelope-from arichardson@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 "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4BwDNX3T28z3S68; Mon, 21 Sep 2020 19:03:08 +0000 (UTC) (envelope-from arichardson@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 438501306C; Mon, 21 Sep 2020 19:03:08 +0000 (UTC) (envelope-from arichardson@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 08LJ38A7030706; Mon, 21 Sep 2020 19:03:08 GMT (envelope-from arichardson@FreeBSD.org) Received: (from arichardson@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08LJ37g8030704; Mon, 21 Sep 2020 19:03:07 GMT (envelope-from arichardson@FreeBSD.org) Message-Id: <202009211903.08LJ37g8030704@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: arichardson set sender to arichardson@FreeBSD.org using -f From: Alex Richardson Date: Mon, 21 Sep 2020 19:03:07 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r365968 - head/contrib/one-true-awk X-SVN-Group: head X-SVN-Commit-Author: arichardson X-SVN-Commit-Paths: head/contrib/one-true-awk X-SVN-Commit-Revision: 365968 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 21 Sep 2020 19:03:08 -0000 Author: arichardson Date: Mon Sep 21 19:03:07 2020 New Revision: 365968 URL: https://svnweb.freebsd.org/changeset/base/365968 Log: awk: Fix subobject out-of-bounds access When matching a regex with ^, it would attempt to access gototab[NSTATES][NCHARS+2], and therefore access the state for the \002 character instead. This change is required to run awk under CHERI (with sub-object bounds) and when running with UBSan instrumentation. This was committed upstream as https://github.com/onetrueawk/awk/commit/cbf924342b63a095a4c6842280c3085b1b63ae45 Found by: CHERI (with subobject bounds enabled) Obtained from: CheriBSD Reviewed By: imp Differential Revision: https://reviews.freebsd.org/D26509 Modified: head/contrib/one-true-awk/awk.h head/contrib/one-true-awk/b.c Modified: head/contrib/one-true-awk/awk.h ============================================================================== --- head/contrib/one-true-awk/awk.h Mon Sep 21 18:34:13 2020 (r365967) +++ head/contrib/one-true-awk/awk.h Mon Sep 21 19:03:07 2020 (r365968) @@ -218,6 +218,8 @@ extern int pairstack[], paircnt; #define NCHARS (256+3) /* 256 handles 8-bit chars; 128 does 7-bit */ /* watch out in match(), etc. */ #define NSTATES 32 +#define HAT (NCHARS+2) /* matches ^ in regular expr */ + /* NCHARS is 2**n */ typedef struct rrow { long ltype; /* long avoids pointer warnings on 64-bit */ @@ -230,7 +232,7 @@ typedef struct rrow { } rrow; typedef struct fa { - uschar gototab[NSTATES][NCHARS]; + uschar gototab[NSTATES][HAT + 1]; uschar out[NSTATES]; uschar *restr; int *posns[NSTATES]; Modified: head/contrib/one-true-awk/b.c ============================================================================== --- head/contrib/one-true-awk/b.c Mon Sep 21 18:34:13 2020 (r365967) +++ head/contrib/one-true-awk/b.c Mon Sep 21 19:03:07 2020 (r365968) @@ -37,8 +37,6 @@ __FBSDID("$FreeBSD$"); #include "awk.h" #include "ytab.h" -#define HAT (NCHARS+2) /* matches ^ in regular expr */ - /* NCHARS is 2**n */ #define MAXLIN 22 #define type(v) (v)->nobj /* badly overloaded here */