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readelf memory leaks

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This fixes two leaks found in the new code supporting display of
dynamic symbols retrieved via dynamic tags.

	* readelf.c (get_num_dynamic_syms): Formatting.  Don't return
	on error without freeing.
	(process_dynamic_section): Don't recreate dynamic symbols from
	dynamic tag info when the dynamic symbols have already been
	read via section headers.
This commit is contained in:
Alan Modra 2020-04-19 17:05:02 +09:30
parent 2efec98b28
commit ceb9bf11b9
2 changed files with 14 additions and 5 deletions
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8
binutils/ChangeLog
View File

@ -1,3 +1,11 @@
2020-04-20 Alan Modra <amodra@gmail.com>
* readelf.c (get_num_dynamic_syms): Formatting. Don't return
on error without freeing.
(process_dynamic_section): Don't recreate dynamic symbols from
dynamic tag info when the dynamic symbols have already been
read via section headers.
2020-04-17 Fredrik Strupe <fredrik@strupe.net>
* testsuite/binutils-all/arm/vdup-cond.d: New test for testing that

11
binutils/readelf.c
View File

@ -9976,7 +9976,7 @@ get_num_dynamic_syms (Filedata * filedata)
if (buckets != NULL && chains != NULL)
num_of_syms = nchains;
no_hash:
no_hash:
if (num_of_syms == 0)
{
if (buckets)
@ -10052,7 +10052,7 @@ get_num_dynamic_syms (Filedata * filedata)
if (gnubuckets[i] < gnusymidx)
{
gnu_hash_error = TRUE;
return FALSE;
goto no_gnu_hash;
}
if (maxchain == 0xffffffff || gnubuckets[i] > maxchain)
@ -10083,7 +10083,7 @@ get_num_dynamic_syms (Filedata * filedata)
if (fread (nb, 4, 1, filedata->handle) != 1)
{
error (_("Failed to determine last chain length\n"));
gnu_hash_error = TRUE;
gnu_hash_error = TRUE;
goto no_gnu_hash;
}
@ -10156,7 +10156,7 @@ get_num_dynamic_syms (Filedata * filedata)
while (off < ngnuchains && (gnuchains[off++] & 1) == 0);
}
no_gnu_hash:
no_gnu_hash:
if (gnu_hash_error)
{
if (mipsxlat)
@ -10260,7 +10260,8 @@ process_dynamic_section (Filedata * filedata)
if (vma >= (seg->p_vaddr & -seg->p_align)
&& vma <= seg->p_vaddr + seg->p_filesz
&& (num_of_syms = get_num_dynamic_syms (filedata)))
&& (num_of_syms = get_num_dynamic_syms (filedata)) != 0
&& dynamic_symbols == NULL)
{
/* Since we do not know how big the symbol table is,
we default to reading in up to the end of PT_LOAD