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perf tools: Fix a compiler warning of NULL pointer

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A compiler warning on the second argument of bsearch() should not be
NULL, but there's a case we might pass it.  Let's return early if we
don't have any DSOs to search in __dsos__find_by_longname_id().

  util/dsos.c:184:8: runtime error: null pointer passed as argument 2, which is declared to never be null

Reported-by: kernel test robot <oliver.sang@intel.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Closes: https://lore.kernel.org/oe-lkp/202406180932.84be448c-oliver.sang@intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240621170528.608772-4-namhyung@kernel.org
This commit is contained in:
Namhyung Kim 2024-06-21 10:05:27 -07:00
parent e988a5b53e
commit 0eb739d87f
1 changed files with 3 additions and 0 deletions
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3
tools/perf/util/dsos.c
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@ -164,6 +164,9 @@ static struct dso *__dsos__find_by_longname_id(struct dsos *dsos,
}; };
struct dso **res; struct dso **res;
if (dsos->dsos == NULL)
return NULL;
if (!dsos->sorted) { if (!dsos->sorted) {
if (!write_locked) { if (!write_locked) {
struct dso *dso; struct dso *dso;