alt Hacker NewsPreventing stack guard-page hopping - https://lwn.net/Articles/725832/
According to this article, allocation in page sizes with implicit probing is used;
Stack clash mitigation in GCC, Part 3 (-fstack-clash-protection option) - https://developers.redhat.com/blog/2020/05/22/stack-clash-mi...
Thank you for the context. But still.
You have a desirable performance optimization feature —used in every Linux program— that happens to interfere with a lousy exploit mitigation.
No one should ever need more than 64kBs for a stack anyways.