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| author | Daniel P. Berrangé <berrange@redhat.com> | 2022-01-05 12:38:47 +0000 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2022-01-14 12:03:16 +0100 |
| commit | 64b4529a432507ee84a924be69a03432639e87ba (patch) | |
| tree | a90711d418068a65a06f81cb356817c64cecd5a9 /tests | |
| parent | eac32e2232f949c0a1638acbef8f6ba0e4feeb67 (diff) | |
| download | qemu-64b4529a432507ee84a924be69a03432639e87ba.zip qemu-64b4529a432507ee84a924be69a03432639e87ba.tar.gz qemu-64b4529a432507ee84a924be69a03432639e87ba.tar.bz2 | |
softmmu: fix device deletion events with -device JSON syntax
The -device JSON syntax impl leaks a reference on the created
DeviceState instance. As a result when you hot-unplug the
device, the device_finalize method won't be called and thus
it will fail to emit the required DEVICE_DELETED event.
A 'json-cli' feature was previously added against the
'device_add' QMP command QAPI schema to indicated to mgmt
apps that -device supported JSON syntax. Given the hotplug
bug that feature flag is not usable for its purpose, so
we add a new 'json-cli-hotplug' feature to indicate the
-device supports JSON without breaking hotplug.
Fixes: 5dacda5167560b3af8eadbce5814f60ba44b467e
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/802
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220105123847.4047954-2-berrange@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/qtest/device-plug-test.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/qtest/device-plug-test.c b/tests/qtest/device-plug-test.c index 559d477..ad79bd4 100644 --- a/tests/qtest/device-plug-test.c +++ b/tests/qtest/device-plug-test.c @@ -77,6 +77,23 @@ static void test_pci_unplug_request(void) qtest_quit(qtest); } +static void test_pci_unplug_json_request(void) +{ + QTestState *qtest = qtest_initf( + "-device '{\"driver\": \"virtio-mouse-pci\", \"id\": \"dev0\"}'"); + + /* + * Request device removal. As the guest is not running, the request won't + * be processed. However during system reset, the removal will be + * handled, removing the device. + */ + device_del(qtest, "dev0"); + system_reset(qtest); + wait_device_deleted_event(qtest, "dev0"); + + qtest_quit(qtest); +} + static void test_ccw_unplug(void) { QTestState *qtest = qtest_initf("-device virtio-balloon-ccw,id=dev0"); @@ -145,6 +162,8 @@ int main(int argc, char **argv) */ qtest_add_func("/device-plug/pci-unplug-request", test_pci_unplug_request); + qtest_add_func("/device-plug/pci-unplug-json-request", + test_pci_unplug_json_request); if (!strcmp(arch, "s390x")) { qtest_add_func("/device-plug/ccw-unplug", |