[RFC] Propose fix for race conditions in pthread cancellation (bz#12683)

[Florian Weimer]

On 09/10/2014 11:47 PM, Adhemerval Zanella wrote:
> Anyway, now I would like comments about proposed solution and if the cases for
> new failures should not be allowed or if testcases now should be adjusted.

Will it be possible to use this mechanism to make selected lock-free 
algorithms inside glibc async-signal-safe?  I think rewinding to a 
previous address will be sufficient in many cases, but a more general 
approach which completes execution of a critical section in the signal 
handler could be desirable.

-- 
Florian Weimer / Red Hat Product Security