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| author | Markus Armbruster <armbru@redhat.com> | 2020-04-22 15:07:19 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-04-29 08:01:52 +0200 |
| commit | 51bd45816615bdb22a31a86f02d601ce536034e3 (patch) | |
| tree | 0e0ca4611dbe019993e912dadc5c7794cb29a898 /qga | |
| parent | 4155c998b6f7618aad0e67c34c2a4aea841114cf (diff) | |
| download | qemu-51bd45816615bdb22a31a86f02d601ce536034e3.zip qemu-51bd45816615bdb22a31a86f02d601ce536034e3.tar.gz qemu-51bd45816615bdb22a31a86f02d601ce536034e3.tar.bz2 | |
qga: Fix qmp_guest_suspend_{disk, ram}() error handling
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL. Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
qmp_guest_suspend_disk() and qmp_guest_suspend_ram() pass @local_err
first to check_suspend_mode(), then to acquire_privilege(), then to
execute_async(). Continuing after errors here can only end in tears.
For instance, we risk tripping error_setv()'s assertion.
Fixes: aa59637ea1c6a4c83430933f9c44c43e6c3f1b69
Fixes: f54603b6aa765514b2519e74114a2f417759d727
Cc: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200422130719.28225-15-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Diffstat (limited to 'qga')
| -rw-r--r-- | qga/commands-win32.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 9717a8d..5ba5632 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -1322,9 +1322,16 @@ void qmp_guest_suspend_disk(Error **errp) *mode = GUEST_SUSPEND_MODE_DISK; check_suspend_mode(*mode, &local_err); + if (local_err) { + goto out; + } acquire_privilege(SE_SHUTDOWN_NAME, &local_err); + if (local_err) { + goto out; + } execute_async(do_suspend, mode, &local_err); +out: if (local_err) { error_propagate(errp, local_err); g_free(mode); @@ -1338,9 +1345,16 @@ void qmp_guest_suspend_ram(Error **errp) *mode = GUEST_SUSPEND_MODE_RAM; check_suspend_mode(*mode, &local_err); + if (local_err) { + goto out; + } acquire_privilege(SE_SHUTDOWN_NAME, &local_err); + if (local_err) { + goto out; + } execute_async(do_suspend, mode, &local_err); +out: if (local_err) { error_propagate(errp, local_err); g_free(mode); |