Re: Cancelling parallel query leads to segfault

On Sat, Jan 27, 2018 at 10:45 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> Hi Peter (and others who mucked around with related code),
>
> While testing another patch I found that cancelling a parallel query on
> master segfaults the leader in an interesting manner:
...
> It's clearly not OK to recurse back into the executing query after a
> failure, even less so if resources like the underlying DSM segment have
> already been freed.
>
> I suspect this is largely the fault of
>
> commit 8561e4840c81f7e345be2df170839846814fa004
> Author: Peter Eisentraut <peter_e(at)gmx(dot)net>
> Date: 2018-01-22 08:30:16 -0500
>
> Transaction control in PL procedures

Yeah, I think this must be the fault of that commit, and I think your
diagnosis is accurate.

--
Robert Haas
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