From: "Alex Bennée" <alex.bennee@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Richard Henderson" <richard.henderson@linaro.org>,
"Juan Quintela" <quintela@redhat.com>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Cleber Rosa" <crosa@redhat.com>,
"Darren Kenny" <darren.kenny@oracle.com>,
"Alexandre Iooss" <erdnaxe@crans.org>,
"Peter Xu" <peterx@redhat.com>,
qemu-arm@nongnu.org, "Eduardo Habkost" <eduardo@habkost.net>,
"Riku Voipio" <riku.voipio@iki.fi>,
"Mahmoud Mandour" <ma.mandourr@gmail.com>,
"Daniel P. Berrangé" <berrange@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Bandan Das" <bsd@redhat.com>,
"Marcin Juszkiewicz" <marcin.juszkiewicz@linaro.org>,
"Radoslaw Biernacki" <rad@semihalf.com>,
"Alexander Bulekov" <alxndr@bu.edu>,
"Leif Lindholm" <quic_llindhol@quicinc.com>,
"Qiuhao Li" <Qiuhao.Li@outlook.com>,
"Wainer dos Santos Moschetta" <wainersm@redhat.com>,
"Marcel Apfelbaum" <marcel.apfelbaum@gmail.com>,
"Leonardo Bras" <leobras@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Bin Meng" <bmeng.cn@gmail.com>, "Thomas Huth" <thuth@redhat.com>,
"Beraldo Leal" <bleal@redhat.com>,
"Laurent Vivier" <lvivier@redhat.com>,
"Yanan Wang" <wangyanan55@huawei.com>,
"Alex Bennée" <alex.bennee@linaro.org>
Subject: [PATCH 19/26] plugins: fix memory leak while parsing options
Date: Fri, 23 Jun 2023 13:20:53 +0100 [thread overview]
Message-ID: <20230623122100.1640995-20-alex.bennee@linaro.org> (raw)
In-Reply-To: <20230623122100.1640995-1-alex.bennee@linaro.org>
It was hard to track down this leak as it was an internal allocation
by glib and the backtraces did not give much away. The autofree was
freeing the allocation with g_free() but not taking care of the
individual strings. They should have been freed with g_strfreev()
instead.
Searching the glib source code for the correct string free function
led to:
G_DEFINE_AUTO_CLEANUP_FREE_FUNC(GStrv, g_strfreev, NULL)
and indeed if you read to the bottom of the documentation page you
will find:
typedef gchar** GStrv;
A typedef alias for gchar**. This is mostly useful when used together with g_auto().
So fix up all the g_autofree g_strsplit case that smugly thought they
had de-allocation covered.
Message-Id: <20230519170454.2353945-3-alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
contrib/plugins/cache.c | 2 +-
contrib/plugins/drcov.c | 2 +-
contrib/plugins/execlog.c | 2 +-
contrib/plugins/hotblocks.c | 2 +-
contrib/plugins/hotpages.c | 2 +-
contrib/plugins/howvec.c | 2 +-
contrib/plugins/hwprofile.c | 2 +-
contrib/plugins/lockstep.c | 2 +-
tests/plugin/bb.c | 2 +-
tests/plugin/insn.c | 2 +-
tests/plugin/mem.c | 2 +-
tests/plugin/syscall.c | 2 +-
12 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/contrib/plugins/cache.c b/contrib/plugins/cache.c
index 2e25184a7f..5036213f1b 100644
--- a/contrib/plugins/cache.c
+++ b/contrib/plugins/cache.c
@@ -772,7 +772,7 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
for (i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "iblksize") == 0) {
l1_iblksize = STRTOLL(tokens[1]);
diff --git a/contrib/plugins/drcov.c b/contrib/plugins/drcov.c
index b4a855adaf..686ae0a537 100644
--- a/contrib/plugins/drcov.c
+++ b/contrib/plugins/drcov.c
@@ -148,7 +148,7 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
int argc, char **argv)
{
for (int i = 0; i < argc; i++) {
- g_autofree char **tokens = g_strsplit(argv[i], "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(argv[i], "=", 2);
if (g_strcmp0(tokens[0], "filename") == 0) {
file_name = g_strdup(tokens[1]);
}
diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
index e255bd21fd..7129d526f8 100644
--- a/contrib/plugins/execlog.c
+++ b/contrib/plugins/execlog.c
@@ -227,7 +227,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
for (int i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "ifilter") == 0) {
parse_insn_match(tokens[1]);
} else if (g_strcmp0(tokens[0], "afilter") == 0) {
diff --git a/contrib/plugins/hotblocks.c b/contrib/plugins/hotblocks.c
index 062200a7a4..6b74d25fea 100644
--- a/contrib/plugins/hotblocks.c
+++ b/contrib/plugins/hotblocks.c
@@ -135,7 +135,7 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
{
for (int i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "inline") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) {
fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
diff --git a/contrib/plugins/hotpages.c b/contrib/plugins/hotpages.c
index 0d12910af6..8316ae50c7 100644
--- a/contrib/plugins/hotpages.c
+++ b/contrib/plugins/hotpages.c
@@ -169,7 +169,7 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
for (i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", -1);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", -1);
if (g_strcmp0(tokens[0], "sortby") == 0) {
if (g_strcmp0(tokens[1], "reads") == 0) {
diff --git a/contrib/plugins/howvec.c b/contrib/plugins/howvec.c
index 4a5ec3d936..0ed01ea931 100644
--- a/contrib/plugins/howvec.c
+++ b/contrib/plugins/howvec.c
@@ -333,7 +333,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
for (i = 0; i < argc; i++) {
char *p = argv[i];
- g_autofree char **tokens = g_strsplit(p, "=", -1);
+ g_auto(GStrv) tokens = g_strsplit(p, "=", -1);
if (g_strcmp0(tokens[0], "inline") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) {
fprintf(stderr, "boolean argument parsing failed: %s\n", p);
diff --git a/contrib/plugins/hwprofile.c b/contrib/plugins/hwprofile.c
index 691d4edb0c..739ac0c66b 100644
--- a/contrib/plugins/hwprofile.c
+++ b/contrib/plugins/hwprofile.c
@@ -263,7 +263,7 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
for (i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "track") == 0) {
if (g_strcmp0(tokens[1], "read") == 0) {
diff --git a/contrib/plugins/lockstep.c b/contrib/plugins/lockstep.c
index a41ffe83fa..e36f0b9562 100644
--- a/contrib/plugins/lockstep.c
+++ b/contrib/plugins/lockstep.c
@@ -323,7 +323,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
for (i = 0; i < argc; i++) {
char *p = argv[i];
- g_autofree char **tokens = g_strsplit(p, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(p, "=", 2);
if (g_strcmp0(tokens[0], "verbose") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &verbose)) {
diff --git a/tests/plugin/bb.c b/tests/plugin/bb.c
index 7d470a1011..df50d1fd3b 100644
--- a/tests/plugin/bb.c
+++ b/tests/plugin/bb.c
@@ -104,7 +104,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
for (i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "inline") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) {
fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
diff --git a/tests/plugin/insn.c b/tests/plugin/insn.c
index cd5ea5d4ae..e251a84d86 100644
--- a/tests/plugin/insn.c
+++ b/tests/plugin/insn.c
@@ -196,7 +196,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
{
for (int i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "inline") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) {
fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
diff --git a/tests/plugin/mem.c b/tests/plugin/mem.c
index 4570f7d815..f3b9f696a0 100644
--- a/tests/plugin/mem.c
+++ b/tests/plugin/mem.c
@@ -83,7 +83,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
for (int i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "haddr") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_haddr)) {
diff --git a/tests/plugin/syscall.c b/tests/plugin/syscall.c
index 96040c578f..72e1a5bf90 100644
--- a/tests/plugin/syscall.c
+++ b/tests/plugin/syscall.c
@@ -121,7 +121,7 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
for (int i = 0; i < argc; i++) {
char *opt = argv[i];
- g_autofree char **tokens = g_strsplit(opt, "=", 2);
+ g_auto(GStrv) tokens = g_strsplit(opt, "=", 2);
if (g_strcmp0(tokens[0], "print") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_print)) {
--
2.39.2
next prev parent reply other threads:[~2023-06-23 12:24 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-23 12:20 [PATCH 00/26] maintainer omnibus: testing, fuzz, plugins, documentation Alex Bennée
2023-06-23 12:20 ` [PATCH 01/26] gitlab: explicit set artifacts publishing criteria Alex Bennée
2023-06-26 7:58 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 02/26] gitlab: ensure coverage job also publishes meson log Alex Bennée
2023-06-26 7:59 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 03/26] gitlab: reduce testing scope of check-gcov Alex Bennée
2023-06-26 7:59 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 04/26] docs/devel: remind developers to run CI container pipeline when updating images Alex Bennée
2023-06-23 12:20 ` [PATCH 05/26] tests/tcg: add mechanism to handle plugin arguments Alex Bennée
2023-06-23 12:20 ` [PATCH 06/26] qemu-keymap: use modern name for Arabic keymap Alex Bennée
2023-06-23 12:23 ` Peter Maydell
2023-06-23 12:20 ` [PATCH 07/26] qemu-keymap: properly check return from xkb_keymap_mod_get_index Alex Bennée
2023-06-23 12:25 ` Peter Maydell
2023-06-26 20:21 ` Alex Bennée
2023-06-23 12:20 ` [PATCH 08/26] scripts/oss-fuzz: add a suppression for keymap Alex Bennée
2023-06-26 8:02 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 09/26] tests/qtests: clean-up and fix leak in generic_fuzz Alex Bennée
2023-06-26 8:06 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 10/26] tests/docker: add test-fuzz Alex Bennée
2023-06-23 12:20 ` [PATCH 11/26] Makefile: add lcitool-refresh to UNCHECKED_GOALS Alex Bennée
2023-06-23 15:10 ` Philippe Mathieu-Daudé
2023-06-23 12:20 ` [PATCH 12/26] tests/lcitool: update to latest version Alex Bennée
2023-06-26 8:08 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 13/26] tests/lcitool: Bump fedora container versions Alex Bennée
2023-06-26 8:09 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 14/26] tests/lcitool: add an explicit gcc-native package Alex Bennée
2023-06-26 8:10 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 15/26] tests/lcitool: introduce qemu-minimal Alex Bennée
2023-06-26 8:14 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 16/26] tests/docker: convert riscv64-cross to lcitool Alex Bennée
2023-06-26 8:16 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 17/26] tests/avocado: update firmware to enable sbsa-ref/max Alex Bennée
2023-06-23 15:14 ` Philippe Mathieu-Daudé
2023-06-23 12:20 ` [PATCH 18/26] plugins: force slow path when plugins instrument memory ops Alex Bennée
2023-06-23 12:20 ` Alex Bennée [this message]
2023-06-26 8:24 ` [PATCH 19/26] plugins: fix memory leak while parsing options Richard Henderson
2023-06-23 12:20 ` [PATCH 20/26] plugins: update lockstep to use g_memdup2 Alex Bennée
2023-06-26 8:25 ` Richard Henderson
2023-06-23 12:20 ` [PATCH 21/26] docs/devel: add some front matter to the devel index Alex Bennée
2023-06-23 12:20 ` [PATCH 22/26] include/migration: mark vmstate_register() as a legacy function Alex Bennée
2023-06-23 12:20 ` [PATCH 23/26] include/hw/qdev-core: fixup kerneldoc annotations Alex Bennée
2023-06-23 12:20 ` [PATCH 24/26] docs/devel/qom.rst: Correct code style Alex Bennée
2023-06-23 12:20 ` [PATCH 25/26] docs/devel: split qom-api reference into new file Alex Bennée
2023-06-23 12:21 ` [PATCH 26/26] docs/devel: introduce some key concepts for QOM development Alex Bennée
2023-06-26 13:27 ` Paolo Bonzini
2023-06-26 13:39 ` Alex Bennée
2023-06-26 15:43 ` Paolo Bonzini
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