diff -ruN a/source_sync_rls_25c/source/unisoc/modules/libmemion/src/MemIon.cpp b/source_sync_rls_25c/source/unisoc/modules/libmemion/src/MemIon.cpp
--- a/source_sync_rls_25c/source/unisoc/modules/libmemion/src/MemIon.cpp
+++ b/source_sync_rls_25c/source/unisoc/modules/libmemion/src/MemIon.cpp
@@ -177,7 +177,7 @@
 
     munmap(mBase, mSize);
     if (mIonDeviceFd > 0) {
-        if (is_ion_legacy()) {
+        if (mIonHandle >= 0 && Is_ion_legacy(mIonDeviceFd)) {
             if (ioctl(mIonDeviceFd, ION_IOC_FREE, &data) < 0)
                 ALOGE("%s: ION_IOC_FREE error: %d (%s)", __func__, -errno,
                       strerror(errno));