fix potential crash

cf. Github PR#47
lyonel · Jan 10, 2021 · ff634c9 · ff634c9
1 parent c86aa13
commit ff634c9
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/core/dmi.cc b/src/core/dmi.cc
@@ -1924,6 +1924,8 @@ static bool scan_dmi_sysfs(hwNode & n)
 
   ifstream ep_stream(SYSFSDMI "/smbios_entry_point",
       ifstream::in | ifstream::binary | ifstream::ate);
+  if (!ep_stream)
+    return false;
   ifstream::pos_type ep_len = ep_stream.tellg();
   vector < u8 > ep_buf(ep_len);
   ep_stream.seekg(0, ifstream::beg);