strange falures of lsfd checks

Hi.

I am just preparing util-linux-2.42 for the next SUSE product: Leap and 
SUSE Linux Enterprise 16.1.

I experienced a strange failures of several lsfd checks when running 
inside a qemu virtual machine and building in chroot. Surprisingly, 
problems are not consistently reproducible. It seems that parallel 
checksuite is more vulnerable to the failures. And the problem appears 
only in some build environments.

I cannot cleanly say it is a regression, as 2.41.2 fails on some build 
machines as well.

Did anybody experience similar problems?

Failing tests:

tests/ts/lsfd/option-hyperlink: Leaves a running task (tee?) and never 
finishes.

tests/ts/lsfd/option-inet:  Leaves a running task (tee?) and never finishes.

Note that the build environment is limited and does not support UDP 
networking.

-- Stanislav Brabec