Hello, On Mon, Jan 30, 2012 at 10:30 PM, Namhyung Kim <namhyung@xxxxxxxxx> wrote: > Right, but the point is it could make a NULL pointer dereference during > evaluation of the argument of the TP AFAICS. I'm not sure about the TP > implementation though, I think I was wrong - T_E_C() cannot protect us from > it because it happens just before jumping to the TP, right? > > So I think we need a conditional jump (with the "likely" annotation) for > this even when the TP is disabled. Hmmm... still not following. Where the said NULL dereference happen? TEC conditional is equivalent to "if (COND) TP;". If you don't use TEC, it'll be "if (COND) if (TP enabled) TP;". With TEC, it will be "if (TP enabled) if (COND) TP;". There's no other difference. Thanks. -- tejun -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
