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[Bug runtime/14546] DWARF unwinder can corrupt probe memory
- From: "mjw at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Wed, 05 Sep 2012 17:39:26 +0000
- Subject: [Bug runtime/14546] DWARF unwinder can corrupt probe memory
- Auto-submitted: auto-generated
- References: <bug-14546-6586@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=14546
--- Comment #2 from Mark Wielaard <mjw at redhat dot com> 2012-09-05 17:39:26 UTC ---
The following "fixes" it for me:
diff --git a/runtime/unwind/unwind.h b/runtime/unwind/unwind.h
index a11dc48..36a9046 100644
--- a/runtime/unwind/unwind.h
+++ b/runtime/unwind/unwind.h
@@ -332,6 +332,7 @@ struct unwind_state {
struct unwind_context {
struct unwind_frame_info info;
struct unwind_state state;
+ char filler[64];
};
static const struct cfa badCFA = { ARRAY_SIZE(reg_info), 1 };
So something is definitely writing beyond the end of the unwind_context.
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