Commit-ID: 11db4e29bb50442ecef2173f325b7be4e7790025
Gitweb: http://git.kernel.org/tip/11db4e29bb50442ecef2173f325b7be4e7790025
Author: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
AuthorDate: Tue, 10 May 2016 14:47:44 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 10 May 2016 11:57:52 -0300
perf pmu: Make pmu_formats_string to check return value of strbuf
Make pmu_formats_string() to check return value of strbuf APIs so that
it can detect errors in it.
Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20160510054744.6158.37810.stgit@devbox
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/pmu.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index bf34468..ddb0261 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -643,20 +643,20 @@ static int pmu_resolve_param_term(struct parse_events_term *term,
static char *pmu_formats_string(struct list_head *formats)
{
struct perf_pmu_format *format;
- char *str;
- struct strbuf buf;
+ char *str = NULL;
+ struct strbuf buf = STRBUF_INIT;
unsigned i = 0;
if (!formats)
return NULL;
- strbuf_init(&buf, 0);
/* sysfs exported terms */
list_for_each_entry(format, formats, list)
- strbuf_addf(&buf, i++ ? ",%s" : "%s",
- format->name);
+ if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0)
+ goto error;
str = strbuf_detach(&buf, NULL);
+error:
strbuf_release(&buf);
return str;
--
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