064de0b7cd
"nsenter -a" doesn't migrate the specified process into the target cgroup (it really should). Thus the cgroup will remain in a cgroup that is (due to cgroup ns) outside our visibility. The kernel will report the cgroup path of such cgroups as starting with "/../". Detect that and print a reasonably error message instead of trying to resolve that. (cherry picked from commit f6793bbcf0e3f0a6daa77add96183b88d5ec2117) (cherry picked from commit 38e0f618ee26d1030a61884db3ba5c317ece3122)
System and Service Manager
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