From 0d92907e2924ee8e0ee6577368e71375637f38c1 Mon Sep 17 00:00:00 2001
Message-Id: <0d92907e2924ee8e0ee6577368e71375637f38c1@dist-git>
From: Andrea Bolognani <abologna@redhat.com>
Date: Tue, 4 Jun 2019 13:24:13 +0200
Subject: [PATCH] util: Propagate numad failures correctly
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Right now, if numad fails, we raise an error but return an
empty string to the caller instead of a NULL pointer, which
means processing will continue and the user will see

  # virsh start guest
  error: Failed to start domain guest
  error: invalid argument: Failed to parse bitmap ''

instead of a more reasonable

  # virsh start guest
  error: Failed to start domain guest
  error: operation failed: Failed to query numad for the advisory nodeset

Make sure the user gets a better error message.

https://bugzilla.redhat.com/show_bug.cgi?id=1716387

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit b34fb1fb6f99628932ad68db1ce4985a06def17f)
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Message-Id: <20190604112413.361-2-abologna@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
 src/util/virnuma.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/util/virnuma.c b/src/util/virnuma.c
index 784db0a7ce..fd15714553 100644
--- a/src/util/virnuma.c
+++ b/src/util/virnuma.c
@@ -66,10 +66,12 @@ virNumaGetAutoPlacementAdvice(unsigned short vcpus,
 
     virCommandSetOutputBuffer(cmd, &output);
 
-    if (virCommandRun(cmd, NULL) < 0)
-        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+    if (virCommandRun(cmd, NULL) < 0) {
+        virReportError(VIR_ERR_OPERATION_FAILED, "%s",
                        _("Failed to query numad for the "
                          "advisory nodeset"));
+        VIR_FREE(output);
+    }
 
     virCommandFree(cmd);
     return output;
-- 
2.21.0