Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH 3/3] perf sort: Check return value of strdup() | Date | Wed, 6 Feb 2013 14:57:17 +0900 |
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From: Namhyung Kim <namhyung.kim@lge.com>
When setup_sorting() is called, 'str' is passed to strtok_r() but it's not checked to have a valid pointer. As strtok_r() accepts NULL pointer on a first argument and use the third argument in that case, it can cause a trouble since our third argument, tmp, is not initialized.
Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Stephane Eranian <eranian@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/util/sort.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index d8b48827a17e..d41926cb9e3f 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -570,6 +570,11 @@ int setup_sorting(void) char *tmp, *tok, *str = strdup(sort_order); int ret = 0; + if (str == NULL) { + error("Not enough memory to setup sort keys"); + return -ENOMEM; + } + for (tok = strtok_r(str, ", ", &tmp); tok; tok = strtok_r(NULL, ", ", &tmp)) { ret = sort_dimension__add(tok); -- 1.7.11.7
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