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binutils-gdb
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Fix a seg-fault in the linker when it encounters a corrupt binary containing a reloc with no associated symbol. 

PR ld/19628
	* reloc.c (bfd_generic_get_relocated_section_contents): Stop
	processing if we encounter a reloc without an associated symbol.
This commit is contained in:
Nick Clifton 2016-02-19 15:20:30 +00:00
parent b8ec4e871e
commit 737684142b
2 changed files with 17 additions and 0 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2016-02-19 Nick Clifton <nickc@redhat.com>
PR ld/19628
* reloc.c (bfd_generic_get_relocated_section_contents): Stop
processing if we encounter a reloc without an associated symbol.
2016-02-18 H.J. Lu <hongjiu.lu@intel.com>
PR ld/19617

11
bfd/reloc.c
View File

@ -7939,6 +7939,7 @@ bfd_generic_get_relocated_section_contents (bfd *abfd,
if (reloc_count > 0)
{
arelent **parent;
for (parent = reloc_vector; *parent != NULL; parent++)
{
char *error_message = NULL;
@ -7946,6 +7947,16 @@ bfd_generic_get_relocated_section_contents (bfd *abfd,
bfd_reloc_status_type r;
symbol = *(*parent)->sym_ptr_ptr;
/* PR ld/19628: A specially crafted input file
can result in a NULL symbol pointer here. */
if (symbol == NULL)
{
link_info->callbacks->einfo
(_("%X%P: %B(%A): error: relocation for offset %V has no value\n"),
abfd, input_section, (* parent)->address);
goto error_return;
}
if (symbol->section && discarded_section (symbol->section))
{
bfd_byte *p;