Bug: running lib.getGenlFamily in container CentOS using Docker

[renanbastos93]

So I am using image FROM centos:7 but when I to try to execute code, it broke and to generate panic. But when was tried in a VM or UNIX directly it success executing.

Error reference in two lines below:

• https://github.com/uber-common/cpustat/blob/79c1ebd00ceaea633e818915edc51fc11cbcb67a/lib/netlink.go#L211
• https://github.com/uber-common/cpustat/blob/79c1ebd00ceaea633e818915edc51fc11cbcb67a/lib/netlink.go#L224

Traceback:

panic: Netlink error code -2 getting TASKSTATS family id

goroutine 1 [running]:
github.com/uber-common/cpustat/lib.getGenlFamily(0xc0000960a0, 0x50da20)
	/root/go/src/github.com/uber-common/cpustat/lib/netlink.go:274 +0x8e
github.com/uber-common/cpustat/lib.NLInit(0x4f04df)
	/root/go/src/github.com/uber-common/cpustat/lib/netlink.go:328 +0x1f3
main.main()
	/test.go:11 +0x34

[vinigfer]

Could you describe which OS was running on the VM, and the host OS running Unix?

[renanbastos93]

Yep, I testing in a VM using CentOS 7 on MacOS Catalina, but the problem is in docker