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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Sat, 19 Feb 2022 08:55:35 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     kernel test robot <lkp@...el.com>,
        Vipin Sharma <vipinsh@...gle.com>, 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 2/19/22 01:30, Sean Christopherson wrote:
> 
> So I think this can be:
> 
> 	rcu_read_lock();
> 	parent = rcu_dereference(current->real_parent);
> 	get_task_struct(parent);
> 	rcu_read_unlock();
> 
> 	(void)cgroup_attach_task_all(parent, current);
>          put_task_struct(parent);

Yes, I agree.

Paolo