linux-kernel - [PATCH 1/2] perf-tool: Don't process samples with no valid machine object

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Date:	Thu, 9 Feb 2012 17:07:38 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
CC:	<linux-kernel@...r.kernel.org>, David Ahern <dsahern@...il.com>,
	Jason Wang <jasowang@...hat.com>,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 1/2] perf-tool: Don't process samples with no valid machine object

The perf sample processing code relies on a valid machine
object. Make sure that this path is only entered when such a
object exists.

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 tools/perf/builtin-top.c  |    2 +-
 tools/perf/util/session.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index dd162aa..7c81d1d 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -805,7 +805,7 @@ static void perf_top__mmap_read_idx(struct perf_top *top, int idx)
 		}
 
 
-		if (event->header.type == PERF_RECORD_SAMPLE) {
+		if (event->header.type == PERF_RECORD_SAMPLE && machine != NULL) {
 			perf_event__process_sample(&top->tool, event, evsel,
 						   &sample, machine);
 		} else if (event->header.type < PERF_RECORD_MAX) {
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index b5ca2558..c9593c7 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -792,7 +792,7 @@ static int perf_session_deliver_event(struct perf_session *session,
 	switch (event->header.type) {
 	case PERF_RECORD_SAMPLE:
 		dump_sample(session, event, sample);
-		if (evsel == NULL) {
+		if (evsel == NULL || machine == NULL) {
 			++session->hists.stats.nr_unknown_id;
 			return -1;
 		}
-- 
1.7.5.4


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