diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-07-04 18:06:20 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-07-09 16:13:27 +0300 |
| commit | d8f9da240495b50766239410f9b0c715ca506a67 (patch) | |
| tree | a9fb3abcc48a72cd34a9299f081aab497325711f /tools/perf/util/metricgroup.c | |
| parent | 7f7c536f23e6afaa5d5d4b0e0958b0be8922491f (diff) | |
| download | linux-d8f9da240495b50766239410f9b0c715ca506a67.tar.xz | |
perf tools: Use zfree() where applicable
In places where the equivalent was already being done, i.e.:
free(a);
a = NULL;
And in placs where struct members are being freed so that if we have
some erroneous reference to its struct, then accesses to freed members
will result in segfaults, which we can detect faster than use after free
to areas that may still have something seemingly valid.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-jatyoofo5boc1bsvoig6bb6i@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/metricgroup.c')
| -rw-r--r-- | tools/perf/util/metricgroup.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index d8164574cb16..0d8c840f88c0 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -18,6 +18,7 @@ #include "strlist.h" #include <assert.h> #include <linux/ctype.h> +#include <linux/zalloc.h> struct metric_event *metricgroup__lookup(struct rblist *metric_events, struct perf_evsel *evsel, @@ -235,7 +236,7 @@ static struct rb_node *mep_new(struct rblist *rl __maybe_unused, goto out_name; return &me->nd; out_name: - free((char *)me->name); + zfree(&me->name); out_me: free(me); return NULL; @@ -263,7 +264,7 @@ static void mep_delete(struct rblist *rl __maybe_unused, struct mep *me = container_of(nd, struct mep, nd); strlist__delete(me->metrics); - free((void *)me->name); + zfree(&me->name); free(me); } @@ -489,8 +490,8 @@ static void metricgroup__free_egroups(struct list_head *group_list) list_for_each_entry_safe (eg, egtmp, group_list, nd) { for (i = 0; i < eg->idnum; i++) - free((char *)eg->ids[i]); - free(eg->ids); + zfree(&eg->ids[i]); + zfree(&eg->ids); free(eg); } } |