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

From: Tejun Heo <[email-masked]>
Date: Mon, 31 Oct 2022 07:52:53 -1000

On Mon, Oct 31, 2022 at 01:23:31PM +1100, Stephen Rothwell wrote:
> 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.

Sorry about that. Fix patch added to the branch. Should be okay now.

Thanks.

-- 
tejun