mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-21 05:43:09 +00:00
53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
Original patch from gentoo: gentoo/src/patchsets/gdb/6.8/80_all_gdb-6.5-dwarf-stack-overflow.patch
|
|
-= BEGIN original header =-
|
|
http://bugs.gentoo.org/144833
|
|
|
|
for gdb/ChangeLog:
|
|
2006-08-22 Will Drewry <wad@google.com>
|
|
Tavis Ormandy <taviso@google.com>
|
|
|
|
* dwarf2read.c (decode_locdesc): Enforce location description stack
|
|
boundaries.
|
|
* dwarfread.c (locval): Likewise.
|
|
|
|
-= END original header =-
|
|
diff -durN gdb-6.8.orig/gdb/dwarf2read.c gdb-6.8/gdb/dwarf2read.c
|
|
--- gdb-6.8.orig/gdb/dwarf2read.c 2008-03-10 15:18:10.000000000 +0100
|
|
+++ gdb-6.8/gdb/dwarf2read.c 2008-06-17 16:07:31.000000000 +0200
|
|
@@ -9124,8 +9124,7 @@
|
|
callers will only want a very basic result and this can become a
|
|
complaint.
|
|
|
|
- Note that stack[0] is unused except as a default error return.
|
|
- Note that stack overflow is not yet handled. */
|
|
+ Note that stack[0] is unused except as a default error return. */
|
|
|
|
static CORE_ADDR
|
|
decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu)
|
|
@@ -9142,7 +9141,7 @@
|
|
|
|
i = 0;
|
|
stacki = 0;
|
|
- stack[stacki] = 0;
|
|
+ stack[++stacki] = 0;
|
|
|
|
while (i < size)
|
|
{
|
|
@@ -9324,6 +9323,16 @@
|
|
dwarf_stack_op_name (op));
|
|
return (stack[stacki]);
|
|
}
|
|
+ /* Enforce maximum stack depth of size-1 to avoid ++stacki writing
|
|
+ outside of the allocated space. Also enforce minimum > 0.
|
|
+ -- wad@google.com 14 Aug 2006 */
|
|
+ if (stacki >= sizeof (stack) / sizeof (*stack) - 1)
|
|
+ internal_error (__FILE__, __LINE__,
|
|
+ _("location description stack too deep: %d"),
|
|
+ stacki);
|
|
+ if (stacki <= 0)
|
|
+ internal_error (__FILE__, __LINE__,
|
|
+ _("location description stack too shallow"));
|
|
}
|
|
return (stack[stacki]);
|
|
}
|