diff --git a/internal/alloc/alloc_unix.go b/internal/alloc/alloc_unix.go
index 009cc1f..c05cfa7 100644
--- a/internal/alloc/alloc_unix.go
+++ b/internal/alloc/alloc_unix.go
@@ -47,7 +47,7 @@ func (m *mmappedMemory) Reallocate(size uint64) []byte {
 		// Commit additional memory up to new bytes.
 		err := unix.Mprotect(m.buf[com:new], unix.PROT_READ|unix.PROT_WRITE)
 		if err != nil {
-			panic(err)
+			return nil
 		}
 
 		// Update committed memory.
diff --git a/internal/alloc/alloc_windows.go b/internal/alloc/alloc_windows.go
index 62d4996..46181b1 100644
--- a/internal/alloc/alloc_windows.go
+++ b/internal/alloc/alloc_windows.go
@@ -56,7 +56,7 @@ func (m *virtualMemory) Reallocate(size uint64) []byte {
 		// Commit additional memory up to new bytes.
 		_, err := windows.VirtualAlloc(m.addr, uintptr(new), windows.MEM_COMMIT, windows.PAGE_READWRITE)
 		if err != nil {
-			panic(err)
+			return nil
 		}
 
 		// Update committed memory.