jemalloc coring in je_bitmap_set

Paul Marquess Paul.Marquess at
Tue Aug 18 08:49:11 PDT 2015

> From: Jason Evans [mailto:jasone at] 
> On Aug 18, 2015, at 5:14 AM, Paul Marquess <Paul.Marquess at> 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?


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