filetable::close print message if fd >= NOFILE

9f5a62ce · Silas Boyd-Wickizer · 41530e6b · 9f5a62ce
--- a/include/filetable.hh
+++ b/include/filetable.hh
@@ -42,6 +42,10 @@ public:
    // XXX(sbw) if f->ref_ > 1 the kernel will not actually close 
    // the file when this function returns (i.e. sys_close can return 
    // while the file/pipe/socket is still open).
+    if (fd >= NOFILE) {
+      cprintf("filetable::close: bad fd %u\n", fd);
+      return;
+    }

    file* f = ofile_[fd].exchange(nullptr);
    if (f != nullptr)