systemtest unstable because of rcu issue

[enkerewpo]

The PR that added system tests for hvisor passed all CI checks, including the system tests themselves. However, after merging into the dev branch, the CI failed. The report indicates that the system test is unstable and may pass on a retry. This instability could be related to a previous RCU issue (noted by Honghao Cheng).

[enkerewpo]

...
[INFO  0] (hvisor::memory::mm:97) region.start: 0x8000004000
[INFO  0] (hvisor::zone:210) zone cpu_set: 0b1100
[INFO  2] (hvisor::event:100) cpu 2 wakeup
[INFO  2] (hvisor::arch::aarch64::cpu:155) cpu 2 started
00:00:02 WARN  virtio_console.c:107: char device redirected to /dev/pts/0
Script started, file is /dev/null
# bash
root@(none):/home/arm64# dmesg | tail -n 3 | awk -F ']' '{print $2}' > ./test/tes
stresult/test_zone1_start.txt
root@(none):/home/arm64# [    5.515636] random: fast init done
./test/textract_dmesg.sh ./test/testresult/test_zone1_st
tart.txt
root@(none):/home/arm64# ./screen_linux2.sh
00:00:02 WARN  virtio_console.c:107: char device redirected to /dev/pts/0
/dev/pts/0
�
bash
# bash: cannot set terminal process group (-1): Inappropriate ioctl for device
bash: no job control in this shell
root@(none):/# cd /home/arm64
root@(none):/home/arm64# ls | grep zone1.txt
zone1.txt
root@(none):/home/arm64# 
[detached from 196.screen_linux2]
root@(none):/home/arm64# echo "zone1.txt" > ./test/testresult/test_zone1_ls.txt
root@(none):/home/arm64# ./hvisor zone list > ./test/testresult/test_zone_list2.t
txt
root@(none):/home/arm64# ./hvisor zone shutdown -id 1
[INFO  0] (hvisor::hypercall:240) handle hvc zone shutdown, id=1
[INFO  3] (hvisor::arch::aarch64::cpu:168) cpu 3 idle
[INFO  3] (hvisor::arch::aarch64::cpu:189) cpu 3 started from parking

(stuck forever)

[CHonghaohao]

Stuck Log Information：

Normal Log Information：

[enkerewpo]

I suggest we temporarily disable the problematic subtests and keep this issue open until we fixed related problem in hvisor.