https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239894
--- Comment #16 from Konstantin Belousov <k...@freebsd.org> --- (In reply to Greg Lewis from comment #15) To check that PROC_STACKGAP_CTL helps, please build kernel and world (or just usr.sbin/proccontrol) with D21352 applied. Then you can run unmodified java binary like that: $ proccontrol -m stackgap -s disable java <args> and stack overflow detection should work same as before stack clash fixes. It if works, the best route would be to add procctl(PROC_STACKGAP_CTL, DISABLE) call at the beginning of the java vm initialization. WRT future work, I might add some code to outguess the need of the procctl(2), disabling gaps if mappings/mprotects are detected to fall into the gap area to probably catch overflows. I am not big fan of this approach because it effectively disables clash protection, which is the reason why I did not implemented that already. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
