On Wed, Jan 22, 2014 at 03:40:26PM +0100, Mauro Andreolini wrote: > Il giorno sab, 18/01/2014 alle 05.42 +0100, Andi Kleen ha scritto: > > The dwarf information should be present unless explicitely disabled. > > It's either a libunwind or compiler problem. You could file a gcc bug > > I suppose. Also check if gdb can backtrace through it. If that works > > it's likely unwind. > gdb can backtrace perfectly through ls -lR /. Also, recompiling the
You tested it on the same IP as perf failed on, correct? It will depend on the exact location. > whole system with -fno-omit-frame-pointer makes perf record & report > work like a charm. So I guess it must be the unwinder. Please report it to the libunwind developers. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
