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Date: Tue, 10 Mar 2015 11:03:31 +0100
From: Ingo Molnar <mingo@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: linux-kernel@vger.kernel.org, Adrian Hunter <adrian.hunter@intel.com>,
        Andi Kleen <ak@linux.intel.com>, Borislav Petkov <bp@suse.de>,
        David Ahern <david.ahern@oracle.com>, Don Zickus <dzickus@redhat.com>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        He Kuang <hekuang@huawei.com>, "H . Peter Anvin" <hpa@zytor.com>,
        Jiri Olsa <jolsa@redhat.com>, Kaixu Xia <xiakaixu@huawei.com>,
        Kan Liang <kan.liang@intel.com>,
        Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
        Namhyung Kim <namhyung@kernel.org>, Naohiro Aota <naota@elisp.net>,
        Peter Zijlstra <peterz@infradead.org>,
        Stephane Eranian <eranian@google.com>,
        "Suzuki K . Poulose" <suzuki.poulose@arm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: Re: [GIT PULL 00/20] perf/core improvements and fixes
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So I got this error today:


                                                                  ┌─Warning:───────────────────────────┐
                                                                  │The vmlinux file can't be used.     │
                                                                  │Kernel samples will not be resolved.│
                                                                  │                                    │
                                                                  │                                    │
                                                                  │Press any key...                    │
                                                                  └────────────────────────────────────┘

... and sadly perf is being passive-aggressive again: being negative 
but refusing to say why! :-)

Is there a way to figure out why it did not like the vmlinux?

Thanks,

	Ingo