Re: [PATCH v2 1/2] rtmutex Real-Time Linux: Fixing kernel BUG at kernel/locking/rtmutex.c:997!

From: Thavatchai Makphaibulchoke
Date: Thu Apr 09 2015 - 18:57:42 EST

On 04/08/2015 02:50 AM, Thomas Gleixner wrote:
> Don't even try to get this working. Taking the lock in idle/interrupt
> context is just plain wrong.

Thanks for the comments.

Could you please confirm you meant rt_mutex as it can go to sleep.

> The proper solution is to get rid of the locking requirement and that
> needs some thought on the timer wheel code.

Yes, I agree fixing the problem in the timer code is the proper
solution. BTW, once the code is fixed, I think we should add
WARN_ON(in_irq()); to the function spin_do_trylock() to prevent any
invalid future usage.


> Thanks,
> tglx

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