From: "Carlo Marcelo Arenas Belón via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: "Carlo Marcelo Arenas Belón" <carenas@gmail.com>,
"Johannes Schindelin" <johannes.schindelin@gmx.de>,
"Junio C Hamano" <gitster@pobox.com>,
"Carlo Marcelo Arenas Belón" <carenas@gmail.com>
Subject: [PATCH v2 3/3] grep: avoid leak of chartables in PCRE2
Date: Wed, 16 Oct 2019 12:10:24 +0000 [thread overview]
Message-ID: <f8724fb267a1629712db742f1e06a452f6b69d3d.1571227824.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.402.v2.git.1571227824.gitgitgadget@gmail.com>
From: =?UTF-8?q?Carlo=20Marcelo=20Arenas=20Bel=C3=B3n?= <carenas@gmail.com>
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 <carenas@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
grep.c | 7 ++++---
grep.h | 1 +
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/grep.c b/grep.c
index 296edbb56f..9556d13dc1 100644
--- a/grep.c
+++ b/grep.c
@@ -525,7 +525,6 @@ 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;
@@ -539,9 +538,10 @@ static void compile_pcre2_pattern(struct grep_pat *p, const struct grep_opt *opt
if (has_non_ascii(p->pattern)) {
if (!pcre2_global_context)
BUG("pcre2_global_context uninitialized");
- 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;
}
@@ -645,6 +645,7 @@ 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;
--
gitgitgadget
prev parent reply other threads:[~2019-10-16 12:10 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-16 12:06 [PATCH 0/3] Revive 'pcre2-chartables-leakfix' Johannes Schindelin via GitGitGadget
2019-10-16 12:06 ` [PATCH 1/3] grep: make PCRE1 aware of custom allocator Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-16 12:06 ` [PATCH 2/3] grep: make PCRE2 " Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-16 12:06 ` [PATCH 3/3] grep: avoid leak of chartables in PCRE2 Johannes Schindelin via GitGitGadget
2019-10-16 12:10 ` [PATCH v2 0/3] Revive 'pcre2-chartables-leakfix' Johannes Schindelin via GitGitGadget
2019-10-16 12:10 ` [PATCH v2 1/3] grep: make PCRE1 aware of custom allocator Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-16 12:10 ` [PATCH v2 2/3] grep: make PCRE2 " Carlo Marcelo Arenas Belón via GitGitGadget
2019-10-18 1:38 ` Junio C Hamano
2021-02-04 21:05 ` [PATCH 00/10] grep/pcre2: memory allocation fixes Ævar Arnfjörð Bjarmason
2021-02-10 21:34 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 " Ævar Arnfjörð Bjarmason
2021-03-04 0:34 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 01/10] grep/pcre2: drop needless assignment + assert() on opt->pcre2 Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 02/10] grep/pcre2: drop needless assignment to NULL Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 03/10] grep/pcre2: correct reference to grep_init() in comment Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 04/10] grep/pcre2: prepare to add debugging to pcre2_malloc() Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 05/10] grep/pcre2: add GREP_PCRE2_DEBUG_MALLOC debug mode Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 06/10] grep/pcre2: use compile-time PCREv2 version test Ævar Arnfjörð Bjarmason
2021-03-04 0:14 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 07/10] grep/pcre2: use pcre2_maketables_free() function Ævar Arnfjörð Bjarmason
2021-02-18 0:07 ` [PATCH v2 08/10] grep/pcre2: actually make pcre2 use custom allocator Ævar Arnfjörð Bjarmason
2021-03-04 0:24 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 09/10] grep/pcre2: move back to thread-only PCREv2 structures Ævar Arnfjörð Bjarmason
2021-03-04 0:27 ` Junio C Hamano
2021-02-18 0:07 ` [PATCH v2 10/10] grep/pcre2: move definitions of pcre2_{malloc,free} Ævar Arnfjörð Bjarmason
2021-03-04 0:28 ` Junio C Hamano
2021-02-04 21:05 ` [PATCH 01/10] grep/pcre2: drop needless assignment + assert() on opt->pcre2 Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 02/10] grep/pcre2: drop needless assignment to NULL Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 03/10] grep/pcre2: correct reference to grep_init() in comment Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 04/10] grep/pcre2: prepare to add debugging to pcre2_malloc() Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 05/10] grep/pcre2: add GREP_PCRE2_DEBUG_MALLOC debug mode Ævar Arnfjörð Bjarmason
2021-02-10 10:38 ` Johannes Schindelin
2021-02-04 21:05 ` [PATCH 06/10] grep/pcre2: use compile-time PCREv2 version test Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 07/10] grep/pcre2: use pcre2_maketables_free() function Ævar Arnfjörð Bjarmason
2021-02-10 10:43 ` Johannes Schindelin
2021-03-04 0:16 ` Junio C Hamano
2021-02-04 21:05 ` [PATCH 08/10] grep/pcre2: actually make pcre2 use custom allocator Ævar Arnfjörð Bjarmason
2021-02-10 12:38 ` Johannes Schindelin
2021-02-04 21:05 ` [PATCH 09/10] grep/pcre2: move back to thread-only PCREv2 structures Ævar Arnfjörð Bjarmason
2021-02-04 21:05 ` [PATCH 10/10] grep/pcre2: move definitions of pcre2_{malloc,free} Ævar Arnfjörð Bjarmason
2021-02-10 12:40 ` Johannes Schindelin
2019-10-16 12:10 ` Carlo Marcelo Arenas Belón via GitGitGadget [this message]
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