Re: perf: perf_fuzzer lockup in perf_cgroup_attach

2016-09-15 Thread Vince Weaver
On Wed, 14 Sep 2016, Stephane Eranian wrote: > I would think there is a way to disable KASLR for this kind of testing! yes, it's just I hadn't realized I had it enabled until I couldn't figure out why addr2line wasn't working. > Which of your fuzzer scripts are you using? fast_repro99.sh? yes.

Re: perf: perf_fuzzer lockup in perf_cgroup_attach

2016-09-15 Thread Vince Weaver
On Thu, 15 Sep 2016, Peter Zijlstra wrote: > On Wed, Sep 14, 2016 at 10:43:29PM -0400, Vince Weaver wrote: > > > > so the skylake that was fuzzing finally is mostly locked up. > > > > Really hard to tell what's going, especially as KASLR made looking up the > > addresses a big pain. > > > > Th

Re: perf: perf_fuzzer lockup in perf_cgroup_attach

2016-09-15 Thread Josh Poimboeuf
On Thu, Sep 15, 2016 at 09:24:25AM +0200, Peter Zijlstra wrote: > On Wed, Sep 14, 2016 at 10:35:49PM -0700, Stephane Eranian wrote: > > On Wed, Sep 14, 2016 at 7:43 PM, Vince Weaver > > wrote: > > > > > > so the skylake that was fuzzing finally is mostly locked up. > > > > > > Really hard to tell

Re: perf: perf_fuzzer lockup in perf_cgroup_attach

2016-09-15 Thread Peter Zijlstra
On Wed, Sep 14, 2016 at 10:35:49PM -0700, Stephane Eranian wrote: > On Wed, Sep 14, 2016 at 7:43 PM, Vince Weaver > wrote: > > > > so the skylake that was fuzzing finally is mostly locked up. > > > > Really hard to tell what's going, especially as KASLR made looking up the > > addresses a big pai

Re: perf: perf_fuzzer lockup in perf_cgroup_attach

2016-09-15 Thread Peter Zijlstra
On Wed, Sep 14, 2016 at 10:43:29PM -0400, Vince Weaver wrote: > > so the skylake that was fuzzing finally is mostly locked up. > > Really hard to tell what's going, especially as KASLR made looking up the > addresses a big pain. > > The best I can tell things are getting wedged somehow in > pe

Re: perf: perf_fuzzer lockup in perf_cgroup_attach

2016-09-14 Thread Stephane Eranian
On Wed, Sep 14, 2016 at 7:43 PM, Vince Weaver wrote: > > so the skylake that was fuzzing finally is mostly locked up. > > Really hard to tell what's going, especially as KASLR made looking up the > addresses a big pain. > I would think there is a way to disable KASLR for this kind of testing! Whi