为什么性能测试“对象代码读取”失败？

如何解决为什么性能测试“对象代码读取”失败？

当我运行 perf test 时，一个在 Ubuntu 21.04 Docker 容器中失败但在其 Ubuntu 21.04 主机上成功的测试是 26: Object code reading。似乎它可能与容器中的某些性能问题有关，例如dwarf 展开根本不起作用。

详细输出是

26: Object code reading                                             :
--- start ---
test child forked,pid 92383
maps__set_modules_path_dir: cannot open /lib/modules/5.11.0-22-generic dir
Problems setting modules path maps,continuing anyway...
maps__set_modules_path_dir: cannot open /lib/modules/5.11.0-22-generic dir
Problems setting modules path maps,continuing anyway...
Looking at the vmlinux_path (8 entries long)
Failed to open /proc/kcore. Note /proc/kcore requires CAP_SYS_RAWIO capability to access.
/proc/{kallsyms,modules} inconsistency while looking for "[bpf]" module!
/proc/{kallsyms,modules} inconsistency while looking for "[bpf]" module!
Using /proc/kallsyms for symbols
Parsing event 'cycles:u'
mmap size 528384B
Reading object code for memory address: 0x7fd8f3dececb
File is: /usr/lib/x86_64-linux-gnu/libc-2.33.so
On file address is: 0x10decb
test child finished with -1
---- end ----
Object code reading: Failed!

测试究竟测试什么，为什么它在容器内失败？我正在使用 --privileged 运行 Docker。