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| author |   Namhyung Kim <namhyung@kernel.org> | 2024-06-21 10:05:27 -0700 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-06-25 11:06:20 -0700 |
| commit | 0eb739d87f1b4780af0168e479d87627a33b6e3d (patch) | |
| tree | 30f54be0a1b6dff33ed6bba906a0577f315088b3 /tools | |
| parent | perf symbol: Simplify kernel module checking (diff) | |
| download | wireguard-linux-0eb739d87f1b4780af0168e479d87627a33b6e3d.tar.xz wireguard-linux-0eb739d87f1b4780af0168e479d87627a33b6e3d.zip | |
perf tools: Fix a compiler warning of NULL pointer
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
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/dsos.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/dsos.c b/tools/perf/util/dsos.c index 846828ea1f00..5e5e05f86dd3 100644 --- a/tools/perf/util/dsos.c +++ b/tools/perf/util/dsos.c @@ -164,6 +164,9 @@ static struct dso *__dsos__find_by_longname_id(struct dsos *dsos, }; struct dso **res; + if (dsos->dsos == NULL) + return NULL; + if (!dsos->sorted) { if (!write_locked) { struct dso *dso; |