aarch64 linux 4.4.1 Frozen screen

[haiyiyang007]

make android-arm KDIR=/lib/modules/uname -r/build HOOKRW=1 insmod suterusu.ko phenomenon: Frozen screen, dmesg --clear && dmesg --follow have not any output.

analyze: inline void arm_write_hook ( void *target, char *code ) { memcpy(target, code, HIJACK_SIZE); cacheflush(target, HIJACK_SIZE); } memcpy is root cause. I am comfused, Would you help me to fix it?