tracing/hist: Fix wrong return value in parse_action_params()
When number of synth fields is more than SYNTH_FIELDS_MAX,
parse_action_params() should return -EINVAL.
Link: https://lore.kernel.org/linux-trace-kernel/20221207034635.2253990-1-zhengyejian1@huawei.com
Cc: <mhiramat@kernel.org>
Cc: <zanussi@kernel.org>
Cc: stable@vger.kernel.org
Fixes: c282a386a3
("tracing: Add 'onmatch' hist trigger action support")
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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@ -3609,6 +3609,7 @@ static int parse_action_params(struct trace_array *tr, char *params,
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while (params) {
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if (data->n_params >= SYNTH_FIELDS_MAX) {
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hist_err(tr, HIST_ERR_TOO_MANY_PARAMS, 0);
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ret = -EINVAL;
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goto out;
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}
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