Re: intermittent bsdtar/jemalloc failures

On Thu, Oct 07, 2021 at 03:28:44PM -0400, Michael Butler via freebsd-current wrote:
> While building a local release bundle, I sometimes get bsdtar failing (and
> dumping core) as follows below. Worse, as can be seen below, it doesn't stop
> the build unless I happen to notice and it yields an incomplete package.
> 
> a usr/src/sys/netgraph/ng_checksum.h
> a usr/src/sys/netgraph/ng_message.h
> a usr/src/sys/netgraph/ng_echo.c
> a usr/src/sys/netgraph/ng_gif.h
> <jemalloc>: jemalloc_arena.c:747: Failed assertion:
> "nstime_compare(&decay->epoch, &time) <= 0"
> Abort trap (core dumped)
> sh /usr/src/release/scripts/make-manifest.sh *.txz > MANIFEST
> 
> What causes this? Build machine is a 2x4-core Intel box with ZFS
> file-systems all around. I tried stopping NTPD temporarily but the failures
> persist .. sometimes :-(
> 
> I've seen this at different points in the archiving process so it doesn't
> seem specific to building kernel.txz.

What timecounter do you use? Perhaps show the whole output from
sysctl kern.timecounter.