[Qemu-devel] [PATCH] target-arm: fix a segmentation fault due to illegal memory access

[Zheng Xiang]

From: Zheng Xiang <address@hidden>

The elements of kvm_devices_head list are freed in kvm_arm_machine_init_done(),
but we still access these illegal memory in kvm_arm_devlistener_del().

This will cause segment fault when booting guest with MALLOC_PERTURB_=1.

Signed-off-by: Zheng Xiang <address@hidden>
---
 target/arm/kvm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 98f5006..5bf41e1 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -256,6 +256,7 @@ static void kvm_arm_machine_init_done(Notifier *notifier, 
void *data)
             kvm_arm_set_device_addr(kd);
         }
         memory_region_unref(kd->mr);
+        QSLIST_REMOVE_HEAD(&kvm_devices_head, entries);
         g_free(kd);
     }
     memory_listener_unregister(&devlistener);
-- 
1.8.3.1