memory leak in do_shmat Report: has C repro

#	Log	Report	Time	Tag
4	log	report	2022/10/13 06:01
3	log	report	2022/07/24 18:02
2	log	report	2022/07/10 16:10
1	log	report	2022/06/14 01:31
0	log	report	2022/05/12 17:09