lkml.org 
[lkml]   [2017]   [Jan]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 3/4] perf tools: Check NULL after zalloc() and Use zfree() instead of free() in parse-events.c
Date
Currently there are several parts not checking NULL
after allocating with zalloc() or asigning NULL value
to a pointer variable after doing free().

So I fill in code checking NULL and
use zfree() instead of free().

Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
tools/perf/util/parse-events.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 3c876b8..87a3e5a 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -211,6 +211,8 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
closedir(evt_dir);
closedir(sys_dir);
path = zalloc(sizeof(*path));
+ if (!path)
+ return NULL;
path->system = malloc(MAX_EVENT_LENGTH);
if (!path->system) {
free(path);
@@ -252,8 +254,7 @@ struct tracepoint_path *tracepoint_name_to_path(const char *name)
if (path->system == NULL || path->name == NULL) {
zfree(&path->system);
zfree(&path->name);
- free(path);
- path = NULL;
+ zfree(&path);
}

return path;
@@ -1477,10 +1478,9 @@ static void perf_pmu__parse_cleanup(void)

for (i = 0; i < perf_pmu_events_list_num; i++) {
p = perf_pmu_events_list + i;
- free(p->symbol);
+ zfree(&p->symbol);
}
- free(perf_pmu_events_list);
- perf_pmu_events_list = NULL;
+ zfree(&perf_pmu_events_list);
perf_pmu_events_list_num = 0;
}
}
@@ -1563,7 +1563,7 @@ perf_pmu__parse_check(const char *name)
r = bsearch(&p, perf_pmu_events_list,
(size_t) perf_pmu_events_list_num,
sizeof(struct perf_pmu_event_symbol), comp_pmu);
- free(p.symbol);
+ zfree(&p.symbol);
return r ? r->type : PMU_EVENT_SYMBOL_ERR;
}

@@ -1710,8 +1710,8 @@ static void parse_events_print_error(struct parse_events_error *err,
fprintf(stderr, "%*s\\___ %s\n", idx + 1, "", err->str);
if (err->help)
fprintf(stderr, "\n%s\n", err->help);
- free(err->str);
- free(err->help);
+ zfree(&err->str);
+ zfree(&err->help);
}

fprintf(stderr, "Run 'perf list' for a list of valid events\n");
@@ -2406,7 +2406,7 @@ void parse_events_terms__purge(struct list_head *terms)

list_for_each_entry_safe(term, h, terms, list) {
if (term->array.nr_ranges)
- free(term->array.ranges);
+ zfree(&term->array.ranges);
list_del_init(&term->list);
free(term);
}
@@ -2422,7 +2422,7 @@ void parse_events_terms__delete(struct list_head *terms)

void parse_events__clear_array(struct parse_events_array *a)
{
- free(a->ranges);
+ zfree(&a->ranges);
}

void parse_events_evlist_error(struct parse_events_evlist *data,
--
2.7.4
\
 
 \ /
  Last update: 2017-01-31 12:41    [W:0.068 / U:17.532 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site