jemalloc coring in je_bitmap_set

[Paul Marquess]

> From: Jason Evans [mailto:jasone at canonware.com] 
> 
> On Aug 18, 2015, at 5:14 AM, Paul Marquess <Paul.Marquess at owmobility.com> wrote:
> > I see a reference to a fix for arena_tcache_fill_small and corruption in the 4.0 ChangeLog. Any chance it could be the root cause for this issue?
> 
> It's possible, but the failure mode for that bug depends on failing to map memory (i.e. extreme memory pressure).

Thanks Jason, 

do you mean a failure in the call to mmap? Assume that isn't necessarily catastrophic (otherwise I assume you would assert straight away).

Is there anything in jemalloc (or other tools) I can do to root cause why that is happening?

cheers
Paul