tidb:fuzzMarshalJSON: Crash with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=4966517563850752 Project: tidb Fuzzing Engine: libFuzzer Fuzz Target: fuzzMarshalJSON Job Type: libfuzzerasantidb Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x0000093dd944 Crash State: NULL Sanitizer: address ASAN Recommended...