(In reply to Nate Gallaher from comment #4) > Created attachment 7250 [details] > Trusty Tahr Reproduction Recipe
On glibc master the test does not produce a SIGSEGV and can be continued and exits normally.
It would really help if you could describe in detail what you think is the race condition between malloc_trim and the fastbin implementation?
(In reply to Nate Gallaher from comment #4)
> Created attachment 7250 [details]
> Trusty Tahr Reproduction Recipe
On glibc master the test does not produce a SIGSEGV and can be continued and exits normally.
It would really help if you could describe in detail what you think is the race condition between malloc_trim and the fastbin implementation?