diff options
| author | Gonglei <arei.gonglei@huawei.com> | 2014-09-16 10:19:33 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-09-22 11:39:18 +0100 |
| commit | 0722eba9450cb8be9713fec1caa0772330739586 (patch) | |
| tree | 90562c47712dfb542c89a2c291256f15556eef75 /qdev-monitor.c | |
| parent | 8007429a99d6ea8480ba0a7a5fb5ae92473f798c (diff) | |
qdev-monitor: fix segmentation fault on qdev_device_help()
Normally, qmp_device_list_properties() may return NULL when
a device haven't special properties excpet Object and DeviceState
properties, such as virtio-balloon-device.
We just need check local_err instead of prop_list.
Example:
Segmentation fault (core dumped)
The backtrace as below:
Program received signal SIGSEGV, Segmentation fault.
0x00005555559af1a8 in error_get_pretty (err=0x0) at util/error.c:152
152 return err->msg;
(gdb) bt
func=0x55555574a6ca <device_help_func>, opaque=0x0, abort_on_failure=0) at util/qemu-option.c:1072
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'qdev-monitor.c')
| -rw-r--r-- | qdev-monitor.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/qdev-monitor.c b/qdev-monitor.c index fb9ee24b3a..5ec66067f5 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -206,7 +206,7 @@ int qdev_device_help(QemuOpts *opts) } prop_list = qmp_device_list_properties(driver, &local_err); - if (!prop_list) { + if (local_err) { error_printf("%s\n", error_get_pretty(local_err)); error_free(local_err); return 1; |