[PATCH] Fix QEMU crash caused when NUMA nodes exceed available CPUs

[Yin Wang]

command "qemu-system-riscv64 -machine virt
-m 2G -smp 1 -numa node,mem=1G -numa node,mem=1G"
would trigger this problem.
This commit fixes the issue by adding parameter checks.

Signed-off-by: Yin Wang <yin.wang@intel.com>
---
 hw/core/numa.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hw/core/numa.c b/hw/core/numa.c
index d8d36b16d8..ff249369be 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -168,6 +168,13 @@ static void parse_numa_node(MachineState *ms, 
NumaNodeOptions *node,
     numa_info[nodenr].present = true;
     max_numa_nodeid = MAX(max_numa_nodeid, nodenr + 1);
     ms->numa_state->num_nodes++;
+    if (ms->smp.max_cpus < ms->numa_state->num_nodes) {
+        error_setg(errp,
+                   "Number of NUMA nodes:(%d)"
+                   " is larger than number of CPUs:(%d)",
+                   ms->numa_state->num_nodes, ms->smp.max_cpus);
+        return;
+    }
 }
 
 static
-- 
2.34.1