Messages in this thread | | | Subject | Re: kill task in TASK_UNINTERRUPTIBLE | From | Robert Love <> | Date | 08 May 2002 09:43:30 -0700 |
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On Wed, 2002-05-08 at 13:23, Denis Vlasenko wrote: > On 8 May 2002 12:01, Amol Lad wrote: > > Hi, > > Is there any way i can kill a task in > > TASK_UNINTERRUPTIBLE state ? > > No. Everytime you see hung task in this state > you see kernel bug. > > Somebody correct me if I am wrong.
Generally correct. Of course, what is "hung" ?
If it is just sitting in uninterruptible sleep, it could legitimately be waiting for an event. More than likely, however, after some sane period of time something is broken.
So, yah, it is a kernel bug.
I'll expand on your answer too - _why_ can't we kill it? Same argument we had over saving the futexes if a process bails. You hold a semaphore because you are entering a critical section. If you die in the middle, who knows the state the data is in and you do _not_ want to reenter it.
Robert Love
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