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vmm: fix changemap

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Matheus
2025-12-28 15:45:11 -03:00
parent 21a2241291
commit aceaab3ddf
1 changed files with 4 additions and 2 deletions
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kernel-src/mm/vmm.c
+4 -2
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@@ -411,10 +411,9 @@ static int changemap(vmmspace_t *space, void *address, size_t size, bool free, i
size_t difference = (uintptr_t)RANGE_TOP(range) - (uintptr_t)address;
range->size -= difference;
rbtree = rbtree_successor(rbtree); // in case we insert a new mapping, get the next successor here already
if (free) {
destroyrange(range, range->size, difference, 0);
rbtree = rbtree_successor(rbtree);
} else {
// create a new range for the changes
new_range->start = (void *)((uintptr_t)range->start + range->size);
@@ -431,6 +430,9 @@ static int changemap(vmmspace_t *space, void *address, size_t size, bool free, i
}
insertrange(space, new_range);
rbtree = rbtree_successor(&new_range->rbtree_node);
new_range = allocrange();
if (new_range == NULL) {
error = ENOMEM;