store_client assertion in 2.7STABLE3

I've got a user who's saw this assertion:

assertion failed: store_client.c:172: "!EBIT_TEST(e->flags,
ENTRY_ABORTED)"

in 2.7STABLE3.

I'm still waiting to get some more details from him, but I'm wondering
if maybe there's a race condition in there somewhere? He only saw it
once in a large deployment of pretty busy caches.

Cheers,

--
Mark Nottingham       mnot_at_yahoo-inc.com