Guoqing Jiang focused on kernel driver safety and memory management in the geerlingguy/linux repository, addressing a critical bug in the Mediatek ASoC I2S driver. Using C and leveraging expertise in device drivers and kernel development, Guoqing corrected the private data size passed to the mt8365_dai_set_priv function, eliminating a potential KASAN global-out-of-bounds issue. This targeted fix improved audio-path stability and enforced proper memory allocation within the I2S/ASoC subsystem. The work demonstrated careful attention to low-level memory safety and contributed to more robust driver behavior, reducing the risk of memory errors in audio workloads for the project.