kernel: physmem: Ensure base is page aligned

- Use ALIGN_UP() on base address in vm_free_frame()

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/vm/vm_physmem.c b/sys/vm/vm_physmem.c
index c7fcedb..ad8a38d 100644
--- a/sys/vm/vm_physmem.c
+++ b/sys/vm/vm_physmem.c
@@ -169,6 +169,8 @@ vm_free_frame(uintptr_t base, size_t count)
 {
     size_t stop_at = base + (count * DEFAULT_PAGESIZE);
 
+    base = ALIGN_UP(base, DEFAULT_PAGESIZE);
+
     spinlock_acquire(&lock);
     for (uintptr_t p = base; p < stop_at; p += DEFAULT_PAGESIZE) {
         clrbit(bitmap, p / DEFAULT_PAGESIZE);