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-rw-r--r--kernel/memory/physalloc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/memory/physalloc.c b/kernel/memory/physalloc.c
index dc8faa8..b164358 100644
--- a/kernel/memory/physalloc.c
+++ b/kernel/memory/physalloc.c
@@ -112,6 +112,9 @@ void free_phys_page(void *ptr)
void free_phys_pages(void *ptr, int pages)
{
+ if (ptr == NULL)
+ return;
+
long idx = page_idx(ptr);
if (idx == -1)
return;