commit f0d74774b04a518671789a4a1afa504911a8020a
author Peter Maydell <peter.maydell@linaro.org> Tue Aug 20 15:49:06 2024 +0100
committer Fabiano Rosas <farosas@suse.de> Tue Sep 03 16:24:33 2024 -0300
tree bee3324964fa87feedb581dc2b5bf280f97d933a
parent 0fa2cf819df3f1097a94a6e839c230adefaa82a3

tests/qtest/migration-test: Fix leaks in calc_dirtyrate_ready()

In calc_dirtyrate_ready() we g_strdup() a string but then never free it:

Direct leak of 19 byte(s) in 2 object(s) allocated from:
    #0 0x55ead613413e in malloc (/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/asan/tests/qtest/migration-test+0x22f13e) (BuildId: e7cd5c37b2987a1af682b43ee5240b98bb316737)
    #1 0x7f7a13d39738 in g_malloc debian/build/deb/../../../glib/gmem.c:128:13
    #2 0x7f7a13d4e583 in g_strdup debian/build/deb/../../../glib/gstrfuncs.c:361:17
    #3 0x55ead6266f48 in calc_dirtyrate_ready tests/qtest/migration-test.c:3409:14
    #4 0x55ead62669fe in wait_for_calc_dirtyrate_complete tests/qtest/migration-test.c:3422:13
    #5 0x55ead6253df7 in test_vcpu_dirty_limit tests/qtest/migration-test.c:3562:9
    #6 0x55ead626a407 in migration_test_wrapper tests/qtest/migration-helpers.c:456:5

We also fail to unref the QMP rsp_return, so we leak that also.

Rather than duplicating the string, use the in-place value from
the qdict, and then unref the qdict.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Fabiano Rosas <farosas@suse.de>