x86_64: fixed a subtle bug in page context cloning

lux-operating-system · Sep 7, 2024 · 9aab931 · 9aab931
1 parent 1e513de
commit 9aab931
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/platform/x86_64/cpu/paging.c b/src/platform/x86_64/cpu/paging.c
@@ -287,7 +287,7 @@ void *platformCloneUserSpace(uintptr_t parent) {
         uint64_t ptr = oldPML4[i] & ~(PAGE_SIZE-1);
         uint64_t flags = oldPML4[i] & (PAGE_SIZE-1);
         if(oldPML4[i]) {
-            newPML4[i] = clonePagingLayer(ptr, 1) | flags;
+            newPML4[i] = clonePagingLayer(ptr, 0) | flags;
         }
     }