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-rw-r--r--tools/testing/selftests/bpf/prog_tests/test_global_funcs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c
index 25b068591e9a..193002b14d7f 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c
@@ -19,7 +19,7 @@ static int libbpf_debug_print(enum libbpf_print_level level,
log_buf = va_arg(args, char *);
if (!log_buf)
goto out;
- if (strstr(log_buf, err_str) == 0)
+ if (err_str && strstr(log_buf, err_str) == 0)
found = true;
out:
printf(format, log_buf);