On Thu, Mar 25, 2021 at 09:11:56PM +0000, Bae, Chang Seok wrote: > But if sigaltstack()’ed with the SS_AUTODISARM flag, both on_sig_stack() and > sas_ss_flags() return 0 [1]. Then, segfault always here. v5 had the exact > issue before [2]. Ah, there's that SS_AUTODISARM check above it which I missed, sorry. I guess we can do a __on_sig_stack() helper or so which does the stack check only without the SS_AUTODISARM. Just for readability's sake in what is already a pretty messy function. Thx. -- Regards/Gruss, Boris. SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg