linux-kernel - Re: [PATCH v3] KVM: Move VM's worker kthreads back to the original cgroup before exiting.

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Date:   Thu, 17 Feb 2022 17:05:45 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     kernel test robot <lkp@...el.com>,
        Vipin Sharma <vipinsh@...gle.com>, seanjc@...gle.com
Cc:     kbuild-all@...ts.01.org, mkoutny@...e.com, tj@...nel.org,
        lizefan.x@...edance.com, hannes@...xchg.org, dmatlack@...gle.com,
        jiangshanlai@...il.com, kvm@...r.kernel.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] KVM: Move VM's worker kthreads back to the original
 cgroup before exiting.

On 2/17/22 13:34, kernel test robot wrote:
>> 5859		reattach_err = cgroup_attach_task_all(current->real_parent, current);

This needs to be within rcu_dereference().

Paolo

>    5860		if (reattach_err) {
>    5861			kvm_err("%s: cgroup_attach_task_all failed on reattach with err %d\n",
>    5862				__func__, reattach_err);
>    5863		}
>    5864		return err;
>    5865	}
>    5866	
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>