Close memory and resource leaks detected by coverity in the binutils directory.

	* objcopy.c (add_specific_symbols): Free buffer on exit.
	(add_redefine_syms_file): Close file handle on exit.
	(copy_object): Close file handle on early exit.
	Free buffer on early exit.
	Free gaps buffers once they are no longer needed.
	* dwarf.c (display_debug_frames): Free allocated memory on exit.
	(load_separate_debug_info): Free allocate memory on early exit.

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index df05bc0..bcc5c78 100644 (file)
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,13 @@
+2018-07-20  Nick Clifton  <nickc@redhat.com>
+
+       * objcopy.c (add_specific_symbols): Free buffer on exit.
+       (add_redefine_syms_file): Close file handle on exit.
+       (copy_object): Close file handle on early exit.
+       Free buffer on early exit.
+       Free gaps buffers once they are no longer needed.
+       * dwarf.c (display_debug_frames): Free allocated memory on exit.
+       (load_separate_debug_info): Free allocate memory on early exit.
+
 2018-07-20  Chenghua Xu  <paul.hua.gm@gmail.com>
            Maciej W. Rozycki  <macro@mips.com>
 

diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index d609df4..b6c0a3a 100644 (file)
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -7429,10 +7429,10 @@ display_debug_frames (struct dwarf_section *section,
   unsigned char *start = section->start;
   unsigned char *end = start + section->size;
   unsigned char *section_start = start;
-  Frame_Chunk *chunks = 0, *forward_refs = 0;
-  Frame_Chunk *remembered_state = 0;
+  Frame_Chunk *chunks = NULL, *forward_refs = NULL;
+  Frame_Chunk *remembered_state = NULL;
   Frame_Chunk *rs;
-  int is_eh = strcmp (section->name, ".eh_frame") == 0;
+  bfd_boolean is_eh = strcmp (section->name, ".eh_frame") == 0;
   unsigned int length_return;
   unsigned int max_regs = 0;
   const char *bad_reg = _("bad register: ");
@@ -8365,6 +8365,36 @@ display_debug_frames (struct dwarf_section *section,
 
   printf ("\n");
 
+  while (remembered_state != NULL)
+    {
+      rs = remembered_state;
+      remembered_state = rs->next;
+      free (rs->col_type);
+      free (rs->col_offset);
+      rs->next = NULL; /* Paranoia.  */
+      free (rs);
+    }
+
+  while (chunks != NULL)
+    {
+      rs = chunks;
+      chunks = rs->next;
+      free (rs->col_type);
+      free (rs->col_offset);
+      rs->next = NULL; /* Paranoia.  */
+      free (rs);
+    }
+
+  while (forward_refs != NULL)
+    {
+      rs = forward_refs;
+      forward_refs = rs->next;
+      free (rs->col_type);
+      free (rs->col_offset);
+      rs->next = NULL; /* Paranoia.  */
+      free (rs);
+    }
+
   return 1;
 }
 
@@ -9793,6 +9823,7 @@ load_separate_debug_info (const char *            main_filename,
   if (debugfile == NULL)
     {
       warn (_("Out of memory"));
+      free (canon_dir);
       return NULL;
     }
 

diff --git a/binutils/objcopy.c b/binutils/objcopy.c
index 3563792..25a88c9 100644 (file)
--- a/binutils/objcopy.c
+++ b/binutils/objcopy.c
@@ -1142,6 +1142,8 @@ add_specific_symbols (const char *filename, htab_t htab)
       line = eol;
       line_count ++;
     }
+
+  free (buffer);
 }
 
 /* See whether a symbol should be stripped or kept
@@ -1817,6 +1819,7 @@ add_redefine_syms_file (const char *filename)
     fatal (_("%s:%d: premature end of file"), filename, lineno);
 
   free (buf);
+  fclose (file);
 }
 
 /* Copy unknown object file IBFD onto OBFD.
@@ -2823,6 +2826,7 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
                             pdump->filename,
                             strerror (errno));
                  free (contents);
+                 fclose (f);
                  return FALSE;
                }
            }
@@ -3153,6 +3157,7 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
                                                  off, now))
                    {
                      bfd_nonfatal_message (NULL, obfd, osections[i], NULL);
+                     free (buf);
                      return FALSE;
                    }
 
@@ -3161,6 +3166,10 @@ copy_object (bfd *ibfd, bfd *obfd, const bfd_arch_info_type *input_arch)
                }
            }
        }
+
+      free (buf);
+      free (gaps);
+      gaps = NULL;
     }
 
   /* Allow the BFD backend to copy any private data it understands