From: David Ahern <dsahern@gmail.com>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung.kim@lge.com>,
LKML <linux-kernel@vger.kernel.org>, Jiri Olsa <jolsa@redhat.com>,
Sonny Rao <sonnyrao@chromium.org>
Subject: Re: [PATCH] perf session: Fix infinite loop on invalid perf.data file
Date: Mon, 30 Sep 2013 07:49:59 -0600 [thread overview]
Message-ID: <52498187.10900@gmail.com> (raw)
In-Reply-To: <1380529188-27193-1-git-send-email-namhyung@kernel.org>
On 9/30/13 2:19 AM, Namhyung Kim wrote:
> From: Namhyung Kim <namhyung.kim@lge.com>
>
> perf-record updates the header in the perf.data file at termination.
> Without this update perf-report (and other processing built-ins) it
> caused an infinite loop when perf report (or something like) called.
>
> This is because the algorithm in __perf_session__process_events()
> depends on the data_size which is read from file header. Use file
> size directly instead in this case to do the best-effort processing.
>
> Cc: David Ahern <dsahern@gmail.com>
> Cc: Sonny Rao <sonnyrao@chromium.org>
> Signed-off-by: David Ahern <dsahern@gmail.com>
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
worked ok for me. Sonny can you verify?
David
next prev parent reply other threads:[~2013-09-30 13:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-30 8:19 [PATCH] perf session: Fix infinite loop on invalid perf.data file Namhyung Kim
2013-09-30 13:49 ` David Ahern [this message]
2013-10-01 0:28 ` Sonny Rao
2013-10-01 7:16 ` Ingo Molnar
2013-10-01 13:24 ` David Ahern
2013-10-01 14:21 ` Ingo Molnar
2013-10-01 14:43 ` David Ahern
2013-10-01 15:33 ` Ingo Molnar
2013-10-01 16:54 ` Arnaldo Carvalho de Melo
2013-10-01 16:59 ` David Ahern
2013-10-04 15:25 ` Arnaldo Carvalho de Melo
2013-10-04 15:33 ` David Ahern
2013-10-01 18:06 ` Ingo Molnar
2013-10-08 10:41 ` [tip:perf/urgent] " tip-bot for Namhyung Kim
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