Re: truss -f timeout 2 sleep 10 causes breakage

Mateusz Guzik <mjguzik@gmail.com> writes:
> Top of main, but I reproduced it on stable/14-e64d827d3 as well.

Confirmed on 14.0-RELEASE-p5.

> Mere "timeout 2 sleep 10" correctly times out.
>
> Running "truss -f timeout 2 sleep 10" prevents timeout from killing
> sleep

This is sort of expected as truss(1) uses ptrace(2) which breaks the
parent-child relationship, so you should never use `truss -f` with a
command that expects to control its children.

> and the entire thing refuses to exit, truss has to be killed off
> with SIGKILL.

This, however, is not expected.

> Here is the best part: after doing the above, going back to mere
> "timeout 2 sleep 10" (without truss!) no longer works

Neither is this.

DES
-- 
Dag-Erling Smørgrav - des@FreeBSD.org