malloc/free and priority inheritance?

Carlos O'Donell
Sat Apr 6 14:27:00 GMT 2013

On 04/05/2013 01:39 PM, Darren Hart wrote:
> On 04/04/2013 08:39 AM, Siddhesh Poyarekar wrote:
>> On 4 April 2013 20:39, Stanislav Meduna <> wrote:
>>> The first thing e.g. the __pthread_cond_broadcast (and most of the
>>> other functions as well) does is to grab lll_lock. Is the following
>>> scenario possible?
>> Yes this is possible.  I think there is a bug report that describes
>> this.  We need to convert the pthread_cond_t internal lock into a PI
>> one if the mutex guarding it is PI.  It's probably tricky to do
>> though; I haven't thought it through.
> I have patches out on the glibc alpha list that do this. It is on my
> plate to dust these off, reapply and test them, and try to push them
> again, I just haven't been able to get to it.
> Patches and test cases available here:


Thanks, and I assume you have copyright assignment through Intel
which is great.

As a community I think we're in a better place to review and
accept these kinds of patches.

Thanks for sticking around for 3 years to make sure these changes
get into glibc :-)


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