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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 18:17:23 +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 #3 from Mark Wielaard <mjw at redhat dot com> 2012-09-05 18:17:23 UTC ---
Issue is this in unwind.c, the sizes don't match up and some extra stuff (18
bytes) gets written after cie_regs, which is at the end of unwind_state, which
is at the end of unwind_context.
/* Store initial state for use with DW_CFA_restore... */
memcpy(&state->cie_regs, ®_STATE, sizeof (REG_STATE));
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