linux-kernel - Re: [RFC][PATCH 00/12] various perf fixes

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Message-ID: <20160215164145.GK6357@twins.programming.kicks-ass.net>
Date:	Mon, 15 Feb 2016 17:41:45 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Dmitry Vyukov <dvyukov@...gle.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>, vince@...ter.net,
	Andi Kleen <andi@...stfloor.org>, jolsa@...hat.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...radead.org>
Subject: Re: [RFC][PATCH 00/12] various perf fixes

On Mon, Feb 15, 2016 at 05:35:51PM +0100, Dmitry Vyukov wrote:
> > root@...-ep:~/gopath/src/github.com/google/syzkaller# bin/syz-manager -config perf.cfg -v 1 -debug
> > 2016/02/15 17:12:50 bad config syzkaller param: can't find bin/syz-execprog
> >
> > And its right, no such thing as bin/syz-execprog
> 
> 
> Please also do:
> 
> $ make execprog
> 
> And replace:
> 
>         "nocover": true,
>         "nodropprivs": true,
> 
> in config file with:
> 
>         "cover": false,
>         "dropprivs": false,
> 
> (that's changed since I wrote the instructions).

OK, now I have syz-fuzzer at ~950% CPU time and a gazillion syz-executor
tasks running.

No splats yet, I'll leave it running for a while.


In order to get coverage support, I have to apply that one patch to my
local kernel, right?