On Fri, 7 Aug 2020 22:19:05 +0300 Vitaliy Makkoveev <m...@openbsd.org> wrote: > Some times ago we disabled in-kernel timeout for pppx(4) related > pipex(4) sessions. We did this for prevent use after free issue caused > by pipex_timer [1]. By default "idle-timeout" is not set in > npppd.conf(5) and I guess this is reason for we forgot to describe this > exception in npppd.conf(5). > > But looks like one user caught this [2]. So I propose to describe this > in BUGS section of npppd.conf(5). > > Also current "idle-timeout" description looks incorrect. If this option > is missing, there is not in-kernel timeout for this session, but > npppd(8) uses it's own timeout for. And we can't configure this value. > > YASUOKA, what do you think? May be we can kill in-kernel timeout feature > for pipex(4)?, and make npppd(8)'s idle timeout configurable by this > option?
I think we should mention this to the man page until we fix it. So I'd like you to update the man page first. I'll try to review the problem. > 1. > https://cvsweb.openbsd.org/src/sys/net/if_pppx.c?rev=1.78&content-type=text/x-cvsweb-markup > 2. https://marc.info/?l=openbsd-misc&m=159655468504864&w=2 > > > Index: usr.sbin/npppd/npppd/npppd.conf.5 > =================================================================== > RCS file: /cvs/src/usr.sbin/npppd/npppd/npppd.conf.5,v > retrieving revision 1.27 > diff -u -p -r1.27 npppd.conf.5 > --- usr.sbin/npppd/npppd/npppd.conf.5 23 Apr 2020 21:10:54 -0000 1.27 > +++ usr.sbin/npppd/npppd/npppd.conf.5 7 Aug 2020 19:17:00 -0000 > @@ -699,3 +699,9 @@ The current version of > .Xr npppd 8 > does not support adding or removing tunnel settings or changing listener > settings (listen address, port and l2tp-ipsec-require). > +.Pp > +This time > +.Xr pppx 4 > +does not allow to create sessions with non null > +.Ic idle-timeout > +option.
