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author | Peter Maydell <peter.maydell@linaro.org> | 2021-05-06 19:58:19 +0100 |
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committer | Thomas Huth <thuth@redhat.com> | 2021-05-14 12:37:00 +0200 |
commit | 2ed765fdeed88cb5434148f0d6ef27ece3dc063c (patch) | |
tree | a09f74d906bf24a5e6c8126b1189a9f4f994016f /tests | |
parent | e0447a834d6170485ad925344223896d0d1d3810 (diff) | |
download | qemu-2ed765fdeed88cb5434148f0d6ef27ece3dc063c.zip qemu-2ed765fdeed88cb5434148f0d6ef27ece3dc063c.tar.gz qemu-2ed765fdeed88cb5434148f0d6ef27ece3dc063c.tar.bz2 |
tests/qtest/migration-test: Use g_autofree to avoid leaks on error paths
Coverity notices that several places in the migration-test code fail
to free memory in error-exit paths. This is pretty unimportant in
test case code, but we can avoid having to manually free the memory
entirely by using g_autofree.
The places where Coverity spotted a leak were relating to early exits
not freeing 'uri' in test_precopy_unix(), do_test_validate_uuid(),
migrate_postcopy_prepare() and test_migrate_auto_converge(). This
patch converts all the string-allocation in the test code to
g_autofree for consistency.
Fixes: Coverity CID 1432313, 1432315, 1432352, 1432364
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20210506185819.9010-1-peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'tests')
-rw-r--r-- | tests/qtest/migration-test.c | 61 |
1 files changed, 20 insertions, 41 deletions
diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c index 4d989f1..2b028df 100644 --- a/tests/qtest/migration-test.c +++ b/tests/qtest/migration-test.c @@ -110,13 +110,12 @@ static void init_bootfile(const char *bootpath, void *content, size_t len) */ static void wait_for_serial(const char *side) { - char *serialpath = g_strdup_printf("%s/%s", tmpfs, side); + g_autofree char *serialpath = g_strdup_printf("%s/%s", tmpfs, side); FILE *serialfile = fopen(serialpath, "r"); const char *arch = qtest_get_arch(); int started = (strcmp(side, "src_serial") == 0 && strcmp(arch, "ppc64") == 0) ? 0 : 1; - g_free(serialpath); do { int readvalue = fgetc(serialfile); @@ -274,10 +273,9 @@ static void check_guests_ram(QTestState *who) static void cleanup(const char *filename) { - char *path = g_strdup_printf("%s/%s", tmpfs, filename); + g_autofree char *path = g_strdup_printf("%s/%s", tmpfs, filename); unlink(path); - g_free(path); } static char *SocketAddress_to_str(SocketAddress *addr) @@ -374,11 +372,8 @@ static char *migrate_get_parameter_str(QTestState *who, static void migrate_check_parameter_str(QTestState *who, const char *parameter, const char *value) { - char *result; - - result = migrate_get_parameter_str(who, parameter); + g_autofree char *result = migrate_get_parameter_str(who, parameter); g_assert_cmpstr(result, ==, value); - g_free(result); } static void migrate_set_parameter_str(QTestState *who, const char *parameter, @@ -495,12 +490,14 @@ static void migrate_start_destroy(MigrateStart *args) static int test_migrate_start(QTestState **from, QTestState **to, const char *uri, MigrateStart *args) { - gchar *arch_source, *arch_target; - gchar *cmd_source, *cmd_target; + g_autofree gchar *arch_source = NULL; + g_autofree gchar *arch_target = NULL; + g_autofree gchar *cmd_source = NULL; + g_autofree gchar *cmd_target = NULL; const gchar *ignore_stderr; - char *bootpath = NULL; - char *shmem_opts; - char *shmem_path; + g_autofree char *bootpath = NULL; + g_autofree char *shmem_opts = NULL; + g_autofree char *shmem_path = NULL; const char *arch = qtest_get_arch(); const char *machine_opts = NULL; const char *memory_size; @@ -559,8 +556,6 @@ static int test_migrate_start(QTestState **from, QTestState **to, g_assert_not_reached(); } - g_free(bootpath); - if (!getenv("QTEST_LOG") && args->hide_stderr) { ignore_stderr = "2>/dev/null"; } else { @@ -588,11 +583,9 @@ static int test_migrate_start(QTestState **from, QTestState **to, memory_size, tmpfs, arch_source, shmem_opts, args->opts_source, ignore_stderr); - g_free(arch_source); if (!args->only_target) { *from = qtest_init(cmd_source); } - g_free(cmd_source); cmd_target = g_strdup_printf("-accel kvm -accel tcg%s%s " "-name target,debug-threads=on " @@ -605,18 +598,14 @@ static int test_migrate_start(QTestState **from, QTestState **to, memory_size, tmpfs, uri, arch_target, shmem_opts, args->opts_target, ignore_stderr); - g_free(arch_target); *to = qtest_init(cmd_target); - g_free(cmd_target); - g_free(shmem_opts); /* * Remove shmem file immediately to avoid memory leak in test failed case. * It's valid becase QEMU has already opened this file */ if (args->use_shmem) { unlink(shmem_path); - g_free(shmem_path); } out: @@ -662,7 +651,7 @@ static int migrate_postcopy_prepare(QTestState **from_ptr, QTestState **to_ptr, MigrateStart *args) { - char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); QTestState *from, *to; if (test_migrate_start(&from, &to, uri, args)) { @@ -684,7 +673,6 @@ static int migrate_postcopy_prepare(QTestState **from_ptr, wait_for_serial("src_serial"); migrate_qmp(from, uri, "{}"); - g_free(uri); wait_for_migration_pass(from); @@ -724,7 +712,7 @@ static void test_postcopy_recovery(void) { MigrateStart *args = migrate_start_new(); QTestState *from, *to; - char *uri; + g_autofree char *uri = NULL; args->hide_stderr = true; @@ -775,7 +763,6 @@ static void test_postcopy_recovery(void) (const char * []) { "failed", "active", "completed", NULL }); migrate_qmp(from, uri, "{'resume': true}"); - g_free(uri); /* Restore the postcopy bandwidth to unlimited */ migrate_set_parameter_int(from, "max-postcopy-bandwidth", 0); @@ -800,7 +787,7 @@ static void test_baddest(void) static void test_precopy_unix(void) { - char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); MigrateStart *args = migrate_start_new(); QTestState *from, *to; @@ -836,14 +823,13 @@ static void test_precopy_unix(void) wait_for_migration_complete(from); test_migrate_end(from, to, true); - g_free(uri); } #if 0 /* Currently upset on aarch64 TCG */ static void test_ignore_shared(void) { - char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); QTestState *from, *to; if (test_migrate_start(&from, &to, uri, false, true, NULL, NULL)) { @@ -873,7 +859,6 @@ static void test_ignore_shared(void) g_assert_cmpint(read_ram_property_int(from, "transferred"), <, 1024 * 1024); test_migrate_end(from, to, true); - g_free(uri); } #endif @@ -925,16 +910,15 @@ static void test_xbzrle(const char *uri) static void test_xbzrle_unix(void) { - char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); test_xbzrle(uri); - g_free(uri); } static void test_precopy_tcp(void) { MigrateStart *args = migrate_start_new(); - char *uri; + g_autofree char *uri = NULL; QTestState *from, *to; if (test_migrate_start(&from, &to, "tcp:127.0.0.1:0", args)) { @@ -971,7 +955,6 @@ static void test_precopy_tcp(void) wait_for_migration_complete(from); test_migrate_end(from, to, true); - g_free(uri); } static void test_migrate_fd_proto(void) @@ -1060,7 +1043,7 @@ static void test_migrate_fd_proto(void) static void do_test_validate_uuid(MigrateStart *args, bool should_fail) { - char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); QTestState *from, *to; if (test_migrate_start(&from, &to, uri, args)) { @@ -1088,7 +1071,6 @@ static void do_test_validate_uuid(MigrateStart *args, bool should_fail) } test_migrate_end(from, to, false); - g_free(uri); } static void test_validate_uuid(void) @@ -1136,7 +1118,7 @@ static void test_validate_uuid_dst_not_set(void) static void test_migrate_auto_converge(void) { - char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); + g_autofree char *uri = g_strdup_printf("unix:%s/migsocket", tmpfs); MigrateStart *args = migrate_start_new(); QTestState *from, *to; int64_t remaining, percentage; @@ -1214,7 +1196,6 @@ static void test_migrate_auto_converge(void) wait_for_serial("dest_serial"); wait_for_migration_complete(from); - g_free(uri); test_migrate_end(from, to, true); } @@ -1224,7 +1205,7 @@ static void test_multifd_tcp(const char *method) MigrateStart *args = migrate_start_new(); QTestState *from, *to; QDict *rsp; - char *uri; + g_autofree char *uri = NULL; if (test_migrate_start(&from, &to, "defer", args)) { return; @@ -1273,7 +1254,6 @@ static void test_multifd_tcp(const char *method) wait_for_serial("dest_serial"); wait_for_migration_complete(from); test_migrate_end(from, to, true); - g_free(uri); } static void test_multifd_tcp_none(void) @@ -1309,7 +1289,7 @@ static void test_multifd_tcp_cancel(void) MigrateStart *args = migrate_start_new(); QTestState *from, *to, *to2; QDict *rsp; - char *uri; + g_autofree char *uri = NULL; args->hide_stderr = true; @@ -1387,7 +1367,6 @@ static void test_multifd_tcp_cancel(void) wait_for_serial("dest_serial"); wait_for_migration_complete(from); test_migrate_end(from, to2, true); - g_free(uri); } int main(int argc, char **argv) |