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Make a copy of the vdso bytes to make valgrind a little quieter.

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2007-03-02  Soren Sandmann <sandmann@daimi.au.dk>

	* process.c (process_get_vdso_bytes): Make a copy of the vdso
	bytes to make valgrind a little quieter.

	* binparser.c: Note to self: Save the file, *then* commit.
	

svn path=/trunk/; revision=357
This commit is contained in:
Soren Sandmann
2007-03-02 06:21:37 +00:00
committed by Søren Sandmann Pedersen
parent 5ee13adc34
commit aaa145ea9b
4 changed files with 22 additions and 3 deletions
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13
process.c
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@ -175,8 +175,19 @@ process_get_vdso_bytes (gsize *length)
if (strcmp (map->filename, "[vdso]") == 0)
{
bytes = (guint8 *)map->start;
n_bytes = map->end - map->start;
/* Dup the memory here so that valgrind will only
* report one 1 byte invalid read instead of
* a ton when the elf parser scans the vdso
*
* The reason we get a spurious invalid read from
* valgrind is that we are getting the address directly
* from /proc/maps, and valgrind knows that its mmap()
* wrapper never returned that address. But since it
* is a legal mapping, it is legal to read it.
*/
bytes = g_memdup ((guint8 *)map->start, n_bytes);
}
}