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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-05-07 06:04:06 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2024-05-07 18:44:02 +0300 |
| commit | 07fde75306667f60b5cee6f10c4115efbc719b96 (patch) | |
| tree | 56691656527f3e75bf314fd3e25296b783551125 /tools/perf/builtin-kwork.c | |
| parent | 54ef362e4daa4a4ecfa2abdc251b21564d27784e (diff) | |
| download | linux-07fde75306667f60b5cee6f10c4115efbc719b96.tar.xz | |
perf kwork: Use zfree() to avoid possibly accessing dangling pointers
When freeing a->b it is good practice to set a->b to NULL using
zfree(&a->b) so that when we have a bug where a reference to a freed 'a'
pointer is kept somewhere, we can more quickly cause a segfault if some
code tries to use a->b.
Convert one such case in the 'perf kwork' codebase.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/lkml/Zjmc5EiN6zmWZj4r@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-kwork.c')
| -rw-r--r-- | tools/perf/builtin-kwork.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/builtin-kwork.c b/tools/perf/builtin-kwork.c index 0092b9b39611..56e3f3a5e03a 100644 --- a/tools/perf/builtin-kwork.c +++ b/tools/perf/builtin-kwork.c @@ -2230,7 +2230,7 @@ static int perf_kwork__top(struct perf_kwork *kwork) perf_kwork__top_report(kwork); out: - free(kwork->top_stat.cpus_runtime); + zfree(&kwork->top_stat.cpus_runtime); return ret; } |