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Date: Tue, 30 Jun 2020 14:00:13 -0700
From: Hydro Flask <>
Cc: Rich Felker <>
Subject: Re: Potential deadlock in pthread_kill()

On 2020-06-30 12:54, Rich Felker wrote:
> Note that for fixing this issue, it won't suffice just to make
> pthread_kill block signals. The other places that use the killlock
> also need to block signals, to make the lock fully AS-safe.
> Rich

Rich did you see the issue I was talking about in the example in my 
previous email? Does it make sense?

I do not mind submitting a patch for this issue if you don't currently 
have the spare cycles, just let me know if we are in agreement in terms 
of understanding the issue and I can submit a patch that blocks "app 
signals" in every place that uses the killlock.

Probably could also remove the pthread_self() special case that you 
referenced earlier in the thread but that would be a second patch.

Thank you,

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