Re: signal 11 for 'conftest' && poudriere jails

On 2019-06-17 07:32, Matthias Apitz wrote:
> 
> While running poudriere jails on a very recent CURRENT:
> 
> FreeBSD jet 13.0-CURRENT FreeBSD 13.0-CURRENT #1 r349041: Sat Jun 15 07:45:13 CEST 2019     guru_at_jet:/usr/obj/usr/src/amd64.amd64/sys/GENERIC  amd64
> 
> I see messages about signal 11 for 'conftest'. The uid 65534 (nobody)
> let me think in poudriere, because there is nothing else running on this
> box:
> 
> Jun 16 19:31:46 jet kernel: pid 55572 (conftest), jid 23, uid 65534: exited on signal 11 (core dumped)
> Jun 16 19:37:25 jet su[98388]: guru to root on /dev/pts/2
> Jun 16 20:01:32 jet kernel: pid 26452 (conftest), jid 25, uid 65534: exited on signal 11 (core dumped)
> Jun 16 20:02:26 jet kernel: pid 54189 (conftest), jid 25, uid 65534: exited on signal 11 (core dumped)
> Jun 16 20:14:09 jet kernel: pid 86215 (conftest), jid 23, uid 65534: exited on signal 11 (core dumped)
> Jun 16 20:31:06 jet ntpdate[79734]: step time server 130.149.17.21 offset 0.309740 sec
> Jun 16 20:38:39 jet kernel: pid 61044 (conftest), jid 25, uid 65534: exited on signal 11 (core dumped)
> Jun 16 20:45:29 jet kernel: pid 24274 (conftest), jid 31, uid 65534: exited on signal 11 (core dumped)
> Jun 16 21:31:06 jet ntpdate[99262]: step time server 130.149.17.21 offset 0.309141 sec
> Jun 16 22:31:06 jet ntpdate[27064]: step time server 130.149.17.21 offset 0.309090 sec
> Jun 16 23:31:06 jet ntpdate[1088]: step time server 130.149.17.21 offset 0.309793 sec
> Jun 16 23:51:38 jet kernel: pid 10847 (java), jid 29, uid 65534, was killed: out of swap space
> Jun 17 00:31:06 jet ntpdate[6936]: step time server 130.149.17.21 offset 0.308939 sec
> Jun 17 00:32:58 jet su[10397]: guru to root on /dev/pts/4
> Jun 17 00:38:22 jet su[28548]: guru to root on /dev/pts/2
> Jun 17 01:31:06 jet ntpdate[39553]: step time server 130.149.17.21 offset 0.309018 sec
> Jun 17 01:41:23 jet kernel: pid 81104 (conftest), jid 26, uid 65534: exited on signal 11 (core dumped)
> Jun 17 02:17:29 jet kernel: pid 9625 (conftest), jid 29, uid 65534: exited on signal 11 (core dumped)
> Jun 17 02:21:56 jet kernel: pid 36351 (conftest), jid 29, uid 65534: exited on signal 11 (core dumped)
> 

I am not 100% sure, but I believe conftest is something from the build 
system, most likely autotools.  Autotools (and possibly others) work by 
compiling, and I guess sometimes running, small code snippets to figure 
out things about the host system.
This is just a guess, but looking at 
https://ftp.gnu.org/old-gnu/Manuals/autoconf-2.57/html_chapter/autoconf_6.html 
and 
https://lists.freebsd.org/pipermail/freebsd-questions/2007-July/154070.html 
seem to agree with me.
Regards
-- 
Niclas