runtime: memory-map: allow pkey_mprotect on any memory from any compa…

…rtment at most once we'll want to revisit this when #165 is solved and we can enforce stricter ownership over allocations
immunant · Sep 12, 2023 · 28a8450 · 28a8450
1 parent 6c33044
commit 28a8450
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/runtime/memory-map/src/lib.rs b/runtime/memory-map/src/lib.rs
@@ -336,7 +336,8 @@ pub extern "C" fn memory_map_pkey_mprotect_region(
     pkey: u8,
 ) -> bool {
     if let Some(mut state) = map.split_out_region(range) {
-        if state.owner_pkey == pkey && state.pkey_mprotected == false {
+        /* forbid repeated pkey_mprotect */
+        if state.pkey_mprotected == false {
             state.pkey_mprotected = true;
             map.add_region(range, state)
         } else {