On Wed, 8 Jan 2025 11:11:30 +0900
"Masami Hiramatsu (Google)" <mhira...@kernel.org> wrote:
> @@ -1234,24 +1223,26 @@ static int __trace_fprobe_create(int argc, const char
> *argv[])
> trace_probe_log_err(0, BAD_PROBE_ADDR);
> else if (ret != -ENOMEM && ret != -EEXIST)
> trace_probe_log_err(0, FAIL_REG_PROBE);
> - goto error;
> - }
> + ret = -EINVAL;
> + } else
> + /* 'tf' is successfully registered. To avoid freeing, assign
> NULL. */
> + tf = NULL;
>
> -out:
> - if (tp_mod)
> - module_put(tp_mod);
> + return ret;
> +}
> +
Hmm, the above could probably be simplified as:
ret = register_trace_fprobe(tf);
if (ret) {
trace_probe_log_set_index(1);
if (ret == -EILSEQ)
trace_probe_log_err(0, BAD_INSN_BNDRY);
else if (ret == -ENOENT)
trace_probe_log_err(0, BAD_PROBE_ADDR);
else if (ret != -ENOMEM && ret != -EEXIST)
trace_probe_log_err(0, FAIL_REG_PROBE);
return -EINVAL;
}
/* 'tf' is successfully registered. To avoid freeing, assign NULL. */
tf = NULL;
return 0;
}
-- Steve
