From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.9 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id B8F291F731 for ; Wed, 7 Aug 2019 21:40:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387999AbfHGVj4 (ORCPT ); Wed, 7 Aug 2019 17:39:56 -0400 Received: from mail-pl1-f196.google.com ([209.85.214.196]:42341 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387802AbfHGVjz (ORCPT ); Wed, 7 Aug 2019 17:39:55 -0400 Received: by mail-pl1-f196.google.com with SMTP id ay6so42642912plb.9 for ; Wed, 07 Aug 2019 14:39:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=qW33J0Fo0ymv9yMlLbkqbn694TluF4+zgIfMGEDbGwY=; b=nZIa3P7HUdmWwan2of4xdyq0ruw0X66z1eO/p8Xb8L2FlWOmxZi38ylf4n/tUKaJ1a exP5+moBRjkL941hYXHP52HQHJYae88DOOyOsIXWKGoWoC92zEWuxkk4roOALmgVMmfZ drrk+MI1AAA+QhKh+kkAhQEK9OrwBHZtF4sYRVVMUxZ0S4fDkHxXvJT7LlQhRJ/R7awu wPlpqifnBiT3xfj6EGNwi+ylmWYBxvaSD6ZMRFUlZhPt0VMIstOyE+0Se3qiYJQBob9k CmVlzWUXzSV/+idjNbiXQ2ajnhuunSs72MxNkCjLfayoj9SYZjPG7Qce5WIPOvXlJdiw taeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=qW33J0Fo0ymv9yMlLbkqbn694TluF4+zgIfMGEDbGwY=; b=iL65jEtigC19j7pbB4rnUYzCDLrdyybNSbf3I8AaOI5hy29aJJmskqkW2IwFRGxv1R 6x19LjLHKxHZ5ZFtudyyFqmedPCuIUkVr6QQJpwazsji3O7euszNaz2o2KE3p5s4KfJf /wAXq3V0zkuCZu+GaYaJVs84sCOvpyYAxxzJ8CLdDeVfQQCDA3Or4vhCWuM0DyPU437S 5+/kVyv7vnEjzjPehuShjwhwJcKs/T2r5fF7M+1TdHaq8i10AM8P8nFgLqKaWSpbpM1f FKhRstmvy/UOlw3z4maZjIS67pB/fXtxWU/icOt2I2H+Wa93fjruDkooK4tcMuls+MK3 MTUA== X-Gm-Message-State: APjAAAXjpCgnS4MpLmG3f65gZdT8Pab87yvbnAHCF3g1yvxWTHLTI0va 9rRAHPg6PrXzNj6lCZhmSWQZVMi72RM= X-Google-Smtp-Source: APXvYqyxzurVvN/0tkipqaWDCdnyXKzmadhGN9aFJrlxXQ7Ly8G+CoGGrv9vH6ddahSIs+raRFpvtg== X-Received: by 2002:a17:902:d715:: with SMTP id w21mr10458526ply.261.1565213994984; Wed, 07 Aug 2019 14:39:54 -0700 (PDT) Received: from localhost.localdomain ([205.209.24.227]) by smtp.gmail.com with ESMTPSA id b24sm63840303pfd.91.2019.08.07.14.39.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 07 Aug 2019 14:39:54 -0700 (PDT) From: =?UTF-8?q?Carlo=20Marcelo=20Arenas=20Bel=C3=B3n?= To: git@vger.kernel.org Cc: avarab@gmail.com, gitster@pobox.com, johannes.schindelin@gmx.de, l.s.r@web.de, michal.kiedrowicz@gmail.com Subject: [RFC PATCH v4 3/3] grep: avoid leak of chartables in PCRE2 Date: Wed, 7 Aug 2019 14:39:45 -0700 Message-Id: <20190807213945.10464-4-carenas@gmail.com> X-Mailer: git-send-email 2.23.0.rc1 In-Reply-To: <20190807213945.10464-1-carenas@gmail.com> References: <20190806163658.66932-1-carenas@gmail.com> <20190807213945.10464-1-carenas@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org 94da9193a6 ("grep: add support for PCRE v2", 2017-06-01) introduced a small memory leak visible with valgrind in t7813. Complete the creation of a PCRE2 specific variable that was missing from the original change and free the generated table just like it is done for PCRE1. Signed-off-by: Carlo Marcelo Arenas Belón Signed-off-by: Junio C Hamano --- grep.c | 7 ++++--- grep.h | 1 + 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/grep.c b/grep.c index 8ee982e2e8..ccb6ab38a3 100644 --- a/grep.c +++ b/grep.c @@ -541,7 +541,6 @@ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt PCRE2_UCHAR errbuf[256]; PCRE2_SIZE erroffset; int options = PCRE2_MULTILINE; - const uint8_t *character_tables = NULL; int jitret; int patinforet; size_t jitsizearg; @@ -557,9 +556,10 @@ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt if (!pcre2_global_context) BUG("pcre2_global_context uninitialized"); #endif - character_tables = pcre2_maketables(pcre2_global_context); + p->pcre2_tables = pcre2_maketables(pcre2_global_context); p->pcre2_compile_context = pcre2_compile_context_create(NULL); - pcre2_set_character_tables(p->pcre2_compile_context, character_tables); + pcre2_set_character_tables(p->pcre2_compile_context, + p->pcre2_tables); } options |= PCRE2_CASELESS; } @@ -663,6 +663,7 @@ static void free_pcre2_pattern(struct grep_pat *p) pcre2_match_data_free(p->pcre2_match_data); pcre2_jit_stack_free(p->pcre2_jit_stack); pcre2_match_context_free(p->pcre2_match_context); + free((void *)p->pcre2_tables); } #else /* !USE_LIBPCRE2 */ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt) diff --git a/grep.h b/grep.h index 526c2db9ef..533165c21a 100644 --- a/grep.h +++ b/grep.h @@ -96,6 +96,7 @@ struct grep_pat { pcre2_compile_context *pcre2_compile_context; pcre2_match_context *pcre2_match_context; pcre2_jit_stack *pcre2_jit_stack; + const uint8_t *pcre2_tables; uint32_t pcre2_jit_on; kwset_t kws; unsigned fixed:1; -- 2.23.0.rc1