diff mbox series

[PULL,05/18] spapr: Fix leak of CPU machine specific data

Message ID 20201027141735.728821-6-david@gibson.dropbear.id.au
State Accepted
Commit 90689a32ce2b84580646956c2417343943e5df37
Headers show
Series ppc-for-5.2 queue 20201028 | expand

Commit Message

David Gibson Oct. 27, 2020, 2:17 p.m. UTC 
From: Greg Kurz <groug@kaod.org>

When a CPU core is being removed, the machine specific data of each
CPU thread object is leaked.

Fix this by calling the dedicated helper we have for that instead of
simply unparenting the CPU object. Call it from a separate loop in
spapr_cpu_core_unrealize() for symmetry with spapr_cpu_core_realize().

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <160279670540.1808373.17319746576919615623.stgit@bahia.lan>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr_cpu_core.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
index b03620823a..c552112145 100644
--- a/hw/ppc/spapr_cpu_core.c
+++ b/hw/ppc/spapr_cpu_core.c
@@ -188,7 +188,6 @@  static void spapr_unrealize_vcpu(PowerPCCPU *cpu, SpaprCpuCore *sc)
     }
     spapr_irq_cpu_intc_destroy(SPAPR_MACHINE(qdev_get_machine()), cpu);
     cpu_remove_sync(CPU(cpu));
-    object_unparent(OBJECT(cpu));
 }
 
 /*
@@ -213,6 +212,15 @@  static void spapr_cpu_core_reset_handler(void *opaque)
     spapr_cpu_core_reset(opaque);
 }
 
+static void spapr_delete_vcpu(PowerPCCPU *cpu, SpaprCpuCore *sc)
+{
+    SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu);
+
+    cpu->machine_data = NULL;
+    g_free(spapr_cpu);
+    object_unparent(OBJECT(cpu));
+}
+
 static void spapr_cpu_core_unrealize(DeviceState *dev)
 {
     SpaprCpuCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
@@ -224,6 +232,9 @@  static void spapr_cpu_core_unrealize(DeviceState *dev)
     for (i = 0; i < cc->nr_threads; i++) {
         spapr_unrealize_vcpu(sc->threads[i], sc);
     }
+    for (i = 0; i < cc->nr_threads; i++) {
+        spapr_delete_vcpu(sc->threads[i], sc);
+    }
     g_free(sc->threads);
 }
 
@@ -294,15 +305,6 @@  err:
     return NULL;
 }
 
-static void spapr_delete_vcpu(PowerPCCPU *cpu, SpaprCpuCore *sc)
-{
-    SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu);
-
-    cpu->machine_data = NULL;
-    g_free(spapr_cpu);
-    object_unparent(OBJECT(cpu));
-}
-
 static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
 {
     /* We don't use SPAPR_MACHINE() in order to exit gracefully if the user