| Message ID | 20201023061218.2080844-2-kuhn.chenqun@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | some memleak trivial patchs | expand |
On 23/10/2020 08.12, Chen Qun wrote: > Properly free each command resp to avoid memory leak. > ASAN shows memory leak stack: > > Indirect leak of 2352520 byte(s) in 571 object(s) allocated from: > #0 0x7f6ca3308d4e in __interceptor_calloc (/lib64/libasan.so.5+0x112d4e) > #1 0x7f6ca3127a50 in g_malloc0 (/lib64/libglib-2.0.so.0+0x55a50) > #2 0x557bf3c71d2b in qdict_new ../qobject/qdict.c:29 > #3 0x557bf3c9caba in parse_object ../qobject/json-parser.c:318 > #4 0x557bf3c9ce75 in json_parser_parse ../qobject/json-parser.c:580 > #5 0x557bf3c8c8cf in json_message_process_token ../qobject/json-streamer.c:92 > #6 0x557bf3c9ea59 in json_lexer_feed_char ../qobject/json-lexer.c:313 > #7 0x557bf3c9eeb5 in json_lexer_feed ../qobject/json-lexer.c:350 > #8 0x557bf3c4793a in qmp_fd_receive ../tests/qtest/libqtest.c:608 > #9 0x557bf3c47b58 in qtest_qmp_receive ../tests/qtest/libqtest.c:618 > #10 0x557bf3c44245 in wait_command ../tests/qtest/migration-helpers.c:59 > #11 0x557bf3c445cb in migrate_query_status ../tests/qtest/migration-helpers.c:108 > #12 0x557bf3c44642 in check_migration_status ../tests/qtest/migration-helpers.c:124 > #13 0x557bf3c447e7 in wait_for_migration_status ../tests/qtest/migration-helpers.c:148 > #14 0x557bf3c43b8f in test_migrate_auto_converge ../tests/qtest/migration-test.c:1243 > ...... > > Fix: 5e34005571af5 > > Reported-by: Euler Robot <euler.robot@huawei.com> > Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com> > --- Thanks, I've queued it now to my qtest-next branch: https://gitlab.com/huth/qemu/-/commits/qtest-next/ Thomas
On Fri, 2020-10-23 at 14:12 +0800, Chen Qun wrote: > Properly free each command resp to avoid memory leak. > ASAN shows memory leak stack: > > Indirect leak of 2352520 byte(s) in 571 object(s) allocated from: > #0 0x7f6ca3308d4e in __interceptor_calloc (/lib64/libasan.so.5+0x112d4e) > #1 0x7f6ca3127a50 in g_malloc0 (/lib64/libglib-2.0.so.0+0x55a50) > #2 0x557bf3c71d2b in qdict_new ../qobject/qdict.c:29 > #3 0x557bf3c9caba in parse_object ../qobject/json-parser.c:318 > #4 0x557bf3c9ce75 in json_parser_parse ../qobject/json-parser.c:580 > #5 0x557bf3c8c8cf in json_message_process_token ../qobject/json-streamer.c:92 > #6 0x557bf3c9ea59 in json_lexer_feed_char ../qobject/json-lexer.c:313 > #7 0x557bf3c9eeb5 in json_lexer_feed ../qobject/json-lexer.c:350 > #8 0x557bf3c4793a in qmp_fd_receive ../tests/qtest/libqtest.c:608 > #9 0x557bf3c47b58 in qtest_qmp_receive ../tests/qtest/libqtest.c:618 > #10 0x557bf3c44245 in wait_command ../tests/qtest/migration-helpers.c:59 > #11 0x557bf3c445cb in migrate_query_status ../tests/qtest/migration-helpers.c:108 > #12 0x557bf3c44642 in check_migration_status ../tests/qtest/migration-helpers.c:124 > #13 0x557bf3c447e7 in wait_for_migration_status ../tests/qtest/migration-helpers.c:148 > #14 0x557bf3c43b8f in test_migrate_auto_converge ../tests/qtest/migration-test.c:1243 > ...... > > Fix: 5e34005571af5 > > Reported-by: Euler Robot <euler.robot@huawei.com> > Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com> > --- > Cc: Thomas Huth <thuth@redhat.com> > Cc: Laurent Vivier <lvivier@redhat.com> > Cc: Maxim Levitsky <mlevitsk@redhat.com> > Cc: Paolo Bonzini <pbonzini@redhat.com> > --- > tests/qtest/migration-helpers.c | 16 ++++++++++++---- > 1 file changed, 12 insertions(+), 4 deletions(-) > > diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c > index b799dbafb7..4ee26014b7 100644 > --- a/tests/qtest/migration-helpers.c > +++ b/tests/qtest/migration-helpers.c > @@ -32,7 +32,7 @@ static void check_stop_event(QTestState *who) > QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) > { > va_list ap; > - QDict *resp; > + QDict *resp, *ret; > > va_start(ap, command); > qtest_qmp_vsend_fds(who, &fd, 1, command, ap); > @@ -44,7 +44,11 @@ QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) > g_assert(!qdict_haskey(resp, "error")); > g_assert(qdict_haskey(resp, "return")); > > - return qdict_get_qdict(resp, "return"); > + ret = qdict_get_qdict(resp, "return"); > + qobject_ref(ret); > + qobject_unref(resp); > + > + return ret; > } > > /* > @@ -53,7 +57,7 @@ QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) > QDict *wait_command(QTestState *who, const char *command, ...) > { > va_list ap; > - QDict *resp; > + QDict *resp, *ret; > > va_start(ap, command); > resp = qtest_vqmp(who, command, ap); > @@ -64,7 +68,11 @@ QDict *wait_command(QTestState *who, const char *command, ...) > g_assert(!qdict_haskey(resp, "error")); > g_assert(qdict_haskey(resp, "return")); > > - return qdict_get_qdict(resp, "return"); > + ret = qdict_get_qdict(resp, "return"); > + qobject_ref(ret); > + qobject_unref(resp); > + > + return ret; > } > > /* This is a funny one. I was thinking that reference counters in qobject should take care of this. I guess not. Thanks for fixing it. Best regards, Maxim Levitsky
diff --git a/tests/qtest/migration-helpers.c b/tests/qtest/migration-helpers.c index b799dbafb7..4ee26014b7 100644 --- a/tests/qtest/migration-helpers.c +++ b/tests/qtest/migration-helpers.c @@ -32,7 +32,7 @@ static void check_stop_event(QTestState *who) QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) { va_list ap; - QDict *resp; + QDict *resp, *ret; va_start(ap, command); qtest_qmp_vsend_fds(who, &fd, 1, command, ap); @@ -44,7 +44,11 @@ QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) g_assert(!qdict_haskey(resp, "error")); g_assert(qdict_haskey(resp, "return")); - return qdict_get_qdict(resp, "return"); + ret = qdict_get_qdict(resp, "return"); + qobject_ref(ret); + qobject_unref(resp); + + return ret; } /* @@ -53,7 +57,7 @@ QDict *wait_command_fd(QTestState *who, int fd, const char *command, ...) QDict *wait_command(QTestState *who, const char *command, ...) { va_list ap; - QDict *resp; + QDict *resp, *ret; va_start(ap, command); resp = qtest_vqmp(who, command, ap); @@ -64,7 +68,11 @@ QDict *wait_command(QTestState *who, const char *command, ...) g_assert(!qdict_haskey(resp, "error")); g_assert(qdict_haskey(resp, "return")); - return qdict_get_qdict(resp, "return"); + ret = qdict_get_qdict(resp, "return"); + qobject_ref(ret); + qobject_unref(resp); + + return ret; } /*
Properly free each command resp to avoid memory leak. ASAN shows memory leak stack: Indirect leak of 2352520 byte(s) in 571 object(s) allocated from: #0 0x7f6ca3308d4e in __interceptor_calloc (/lib64/libasan.so.5+0x112d4e) #1 0x7f6ca3127a50 in g_malloc0 (/lib64/libglib-2.0.so.0+0x55a50) #2 0x557bf3c71d2b in qdict_new ../qobject/qdict.c:29 #3 0x557bf3c9caba in parse_object ../qobject/json-parser.c:318 #4 0x557bf3c9ce75 in json_parser_parse ../qobject/json-parser.c:580 #5 0x557bf3c8c8cf in json_message_process_token ../qobject/json-streamer.c:92 #6 0x557bf3c9ea59 in json_lexer_feed_char ../qobject/json-lexer.c:313 #7 0x557bf3c9eeb5 in json_lexer_feed ../qobject/json-lexer.c:350 #8 0x557bf3c4793a in qmp_fd_receive ../tests/qtest/libqtest.c:608 #9 0x557bf3c47b58 in qtest_qmp_receive ../tests/qtest/libqtest.c:618 #10 0x557bf3c44245 in wait_command ../tests/qtest/migration-helpers.c:59 #11 0x557bf3c445cb in migrate_query_status ../tests/qtest/migration-helpers.c:108 #12 0x557bf3c44642 in check_migration_status ../tests/qtest/migration-helpers.c:124 #13 0x557bf3c447e7 in wait_for_migration_status ../tests/qtest/migration-helpers.c:148 #14 0x557bf3c43b8f in test_migrate_auto_converge ../tests/qtest/migration-test.c:1243 ...... Fix: 5e34005571af5 Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com> --- Cc: Thomas Huth <thuth@redhat.com> Cc: Laurent Vivier <lvivier@redhat.com> Cc: Maxim Levitsky <mlevitsk@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> --- tests/qtest/migration-helpers.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)