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SubjectRe: [PATCH] oom: skip frozen tasks
Michal Hocko wrote:
> On Fri 26-08-11 14:03:17, Konstantin Khlebnikov wrote:
>> Michal Hocko wrote:
>>
>>> @@ -450,6 +459,10 @@ static int oom_kill_task(struct task_struct *p, struct mem_cgroup *mem)
>>> pr_err("Kill process %d (%s) sharing same memory\n",
>>> task_pid_nr(q), q->comm);
>>> task_unlock(q);
>>> +
>>> + if (frozen(q))
>>> + thaw_process(q);
>>> +
>>
>> We must thaw task strictly after sending SIGKILL.
>
> Sounds reasonable.
>
>> But anyway I think this is a bad idea.
>
> Why?

Refrigerator may be used for digging in task's internal structures,
so such digger may be very surprised if somebody suddenly thaws this task.

>
>>
>>> force_sig(SIGKILL, q);
>>> }
>>>
>



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