| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com>, Alexander Lakhin <exclusion(at)gmail(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>, Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com> |
| Subject: | Re: BUG #17255: Server crashes in index_delete_sort_cmp() due to race condition with vacuum |
| Date: | 2021-11-19 02:55:08 |
| Message-ID: | CAH2-WznCt0mCuKw2j6_2AGibV1dqmPOM9DGmM34rEbe=SvnVJg@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Thu, Nov 18, 2021 at 4:36 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> Attached is such an isolationtest. In an unmodified HEAD it ends up with
> without amcheck detecting corruption at that point:(.
The best way to teach amcheck to detect this kind of thing is bound to
be verification of HOT chains themselves:
It would also be nice to teach verify_nbtree.c to look out for the
presence of index tuples that shouldn't be there during heapallindexed
verification, but that's significantly harder.
--
Peter Geoghegan
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