linux-next: build failure after merge of the cgroup tree

[Stephen Rothwell]

Hi all,

After merging the cgroup tree, today's linux-next build (x86_64
allmodconfig) failed like this:

ERROR: modpost: "css_tryget" [arch/x86/kvm/kvm-amd.ko] undefined!
ERROR: modpost: "css_put" [arch/x86/kvm/kvm-amd.ko] undefined!
ERROR: modpost: "css_put" [fs/btrfs/btrfs.ko] undefined!
ERROR: modpost: "css_get" [fs/btrfs/btrfs.ko] undefined!
ERROR: modpost: "css_put" [drivers/block/loop.ko] undefined!
ERROR: modpost: "css_get" [drivers/block/loop.ko] undefined!
ERROR: modpost: "css_put" [net/netfilter/xt_cgroup.ko] undefined!

Caused by commit

  6ab428604f72 ("cgroup: Implement DEBUG_CGROUP_REF")

I have used the cgroup tree from next-20221028 for today.

-- 
Cheers,
Stephen Rothwell

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