内核：Linux g2-alive-hz-03 4.19.91-26.an8.x86_64 #1 SMP Tue May 24 13:10:09 CST 2022 x86_64 x86_64 x86_64 GNU/Linux
AnolisOS 8.4 ANCK内核，8.6也一样。
crun开发者的回复：
I am fine to add a workaround, but I'd like to understand what is going on.
What system are you running?
It seems your kernel has support for pidfd_open but not for pidfd_send_signal.
pidfd_open was added to Linux v5.3 while pidfd_send_signal to v5.1
是否是ANCK内核添加了5.3的特性又没有添加5.1的特性呢？
