Andres Freund <andres@2ndquadrant.com> writes:
>> This is my first test like this against 9.3 development though, so the cause
>> could be an earlier commit. I'm just starting with the most recent work as
>> the first suspect. Next I think I'll try autovacuum=off and see if the
>> crash goes away. Other ideas are welcome.
> Something like the (untested) debug message below might be helpful:
It might also be interesting to know if there is more than one
still-pinned buffer --- that is, if you're going to hack the code, fix
it to elog(LOG) each pinned buffer and then panic after completing the
loop.
regards, tom lane