In message <02078965-24be-4f23-92d5-5e8e54a0c...@freebsd.org>, Jessica Clarke w rites: > > On 21 May 2021, at 15:11, Marcin Wojtas <m...@semihalf.com> wrote: > > > > Hi Jess > > > > pt., 21 maj 2021 o 15:39 Jessica Clarke <jrt...@freebsd.org> napisaÅ(a): > >> > >> On 21 May 2021, at 14:34, Marcin Wojtas <m...@freebsd.org> wrote: > >>> > >>> The branch main has been updated by mw: > >>> > >>> URL: https://cgit.FreeBSD.org/src/commit/?id=af949c590bd8a00a5973b5875d7e > 0fa6832ea64a > >>> > >>> commit af949c590bd8a00a5973b5875d7e0fa6832ea64a > >>> Author: Marcin Wojtas <m...@freebsd.org> > >>> AuthorDate: 2021-05-21 09:29:22 +0000 > >>> Commit: Marcin Wojtas <m...@freebsd.org> > >>> CommitDate: 2021-05-21 13:33:06 +0000 > >>> > >>> Disable stack gap for ntpd during build. > >>> > >>> When starting, ntpd calls setrlimit(2) to limit maximum size of its > >>> stack. The stack limit chosen by ntpd is 200K, so when stack gap > >>> is enabled, the stack gap is larger than this limit, which results > >>> in ntpd crashing. > >> > >> Isnât the bug that the unusable gap counts as usage? > >> > >> Jess > >> > > > > An alternative solution was submitted > > (https://reviews.freebsd.org/D29832), so that to extend the limit for > > ntpd, but eventually it was recommended to simple disable the stack > > gap for it until it's fixed upstream (see the last comment in the > > linked revision). > > Thatâs my point, there is nothing to âfixâ upstream. NTPD uses less tha > n 200K > of stack, thus it is perfectly reasonable for it to set its limit to that. Th > e > fact that FreeBSD decides to count an arbitrary, non-deterministic amount of > additional unusable virtual address space towards that limit is not its fault > , > but a bug in FreeBSD that needs to be fixed as itâs entirely unreasonable f > or > applications to have to account for that.
This latest problem is not stack gap. It is PIE. -- Cheers, Cy Schubert <cy.schub...@cschubert.com> FreeBSD UNIX: <c...@freebsd.org> Web: https://FreeBSD.org NTP: <c...@nwtime.org> Web: https://nwtime.org The need of the many outweighs the greed of the few. _______________________________________________ dev-commits-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "dev-commits-src-all-unsubscr...@freebsd.org"
