Re: [patch 0/2] locking/rtmutex: Cure two subtle bugs

[Peter Zijlstra]

On Wed, Aug 25, 2021 at 12:33:11PM +0200, Thomas Gleixner wrote:
> The recent updates to rtmutex introduced two subtle bugs:
> 
>   1) The spinwait mechanism added a UAF which triggers a BUG_ON()
> 
>   2) The ww_mutex addition leaves a waiter queued in the error exit path
>      resulting in rb tree corruption
> 
> The fixes are straight forward, but the rtmutex based ww_mutex
> implementation still has some more rough egdes which need to be ironed out.

Thanks!