Re: perf stat crashes with latest download (git clone -b perf/core)

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Thu, Nov 09, 2017 at 11:30:24AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Nov 09, 2017 at 03:23:43PM +0100, Thomas-Mich Richter escreveu:
> > I have downloaded this code some days ago
> > 
> >     git clone -b perf/core git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux acme
> > 
> > and run into this issue which I reproduce on my KVM virtual machine on intel and s390x.
> > 
> > [root@localhost perf]# ./perf stat  -e '{cpu-clock,instructions}' kill
> > kill: not enough arguments
> > Segmentation fault (core dumped)
> > [root@localhost perf]# 
> > 
> > When I debug this further using gdb I get this error:
> 
> Trying with today's acme/perf/core:
> 
> Yeah,
> 
> [acme@jouet linuxdev-br]$ perf stat  -e '{cpu-clock,instructions}' kill
> kill: not enough arguments
> Segmentation fault (core dumped)
> [acme@jouet linuxdev-br]$
> 
> Trying to bisect it now, thanks for the report!

Additional data point, this is happening only with perf/core, not
perf/urgent.

- Arnaldo