binfmt/elf: bss section should init to zero

Signed-off-by: hujun5 <[email protected]>

binfmt/libelf/libelf_load.c

@@ -194,6 +194,15 @@ static inline int elf_loadfile(FAR struct elf_loadinfo_s *loadinfo)
                 }
             }
 
+            /* If there is no data in an allocated section, then the allocated
+            * section must be cleared.
+            */
+
+            else
+              {
+                memset((FAR uint8_t *)shdr->sh_addr, 0, shdr->sh_size);
+              }
+
           continue;
         }