On Tue, 21 Jan 2014 17:26:51 +0100, Jan Kratochvil wrote:
To make a summary what can remain from this patch to get it
accepted:
* "__morestack" check is forbidden
* frames ordering by $sp0 < $sp1 is forbidden
* dynamicsizehash.[ch] is forbidden
* only $sp0 == $sp1 can be checked and >= 2 frames loops are not detected
* therefore signal frames / sigaltstack makes no difference for this patch
* CFA check is forbidden, it should check real ebl-supplied SP
There is remaining this issue of the elfutils unwinder.
It seems a proper fix catching all infinite backtraces is not possible under
the constraints for the patch acceptance from this mail thread so asking for
verification if the constraints above which I deducted from the mail thread
are the ones required for the patch acceptance so one can write down at least
a partial fix of the problem.
Thanks,
Jan