linux-kernel - [tip:perf/core] perf annotate: Handle ins parsing failures

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Message-ID: <tip-be81908c2289f405df75d2511ccf5da785945400@git.kernel.org>
Date:	Wed, 28 Jan 2015 07:00:48 -0800
From:	tip-bot for Rabin Vincent <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	peterz@...radead.org, tglx@...utronix.de, paulus@...ba.org,
	rabin@....in, linux-kernel@...r.kernel.org, mingo@...nel.org,
	acme@...hat.com, hpa@...or.com
Subject: [tip:perf/core] perf annotate: Handle ins parsing failures

Commit-ID:  be81908c2289f405df75d2511ccf5da785945400
Gitweb:     http://git.kernel.org/tip/be81908c2289f405df75d2511ccf5da785945400
Author:     Rabin Vincent <rabin@....in>
AuthorDate: Sun, 18 Jan 2015 20:00:20 +0100
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 21 Jan 2015 10:05:17 -0300

perf annotate: Handle ins parsing failures

Don't use the ins's ->sncprintf() if the parsing failed.

For example, this fixes the display of "imul %edx".  Without this patch:

       |      imul   (null),(null)

After this patch:

       |      imul   %edx

Signed-off-by: Rabin Vincent <rabin@....in>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/1421607621-15005-1-git-send-email-rabin@rab.in
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/annotate.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 79999ce..d5da1b8 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -183,8 +183,9 @@ static int lock__parse(struct ins_operands *ops)
 	if (!ops->locked.ins->ops)
 		return 0;
 
-	if (ops->locked.ins->ops->parse)
-		ops->locked.ins->ops->parse(ops->locked.ops);
+	if (ops->locked.ins->ops->parse &&
+	    ops->locked.ins->ops->parse(ops->locked.ops) < 0)
+		goto out_free_ops;
 
 	return 0;
 
@@ -531,8 +532,8 @@ static void disasm_line__init_ins(struct disasm_line *dl)
 	if (!dl->ins->ops)
 		return;
 
-	if (dl->ins->ops->parse)
-		dl->ins->ops->parse(&dl->ops);
+	if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
+		dl->ins = NULL;
 }
 
 static int disasm_line__parse(char *line, char **namep, char **rawp)
--
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