In the memory_region_do_invalidate_mmio_ptr() routine the section
variable is intialized by the memory_region_find() call. The section.mr
field can be set to NULL.
Add the check for NULL before trying to drop a section.
Signed-off-by: Dima Stepanov <dimas...@yandex-team.ru>
---
memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/memory.c b/memory.c
index 3212acc..bb45248 100644
--- a/memory.c
+++ b/memory.c
@@ -2712,7 +2712,7 @@ static void memory_region_do_invalidate_mmio_ptr(CPUState
*cpu,
/* Reset dirty so this doesn't happen later. */
cpu_physical_memory_test_and_clear_dirty(offset, size, 1);
- if (section.mr != mr) {
+ if (section.mr && (section.mr != mr)) {
/* memory_region_find add a ref on section.mr */
memory_region_unref(section.mr);
if (MMIO_INTERFACE(section.mr->owner)) {
--
2.7.4
