Re: PANIC in heap_delete during ALTER TABLE

Jeff Davis <pgsql@j-davis.com>

From: Jeff Davis <pgsql@j-davis.com>

To: Robins Tharakan <tharakan@gmail.com>

Cc: pgsql-bugs@postgresql.org

Date: 2022-09-22T18:47:06Z

Lists: pgsql-bugs

On Wed, 2022-09-21 at 20:48 +0930, Robins Tharakan wrote:
> Thanks Jeff for picking this up.
> 
> > I plan to commit something close to this patch in about 48 hours
> > and
> > backport to 12, like 5f12bc94dc was.
> > 
> Using the repro provided, I can confirm that the patch works on
> master
> (6bcda4a7212) and thus also +1 on going ahead with pushing this.

Committed.

-- 
Jeff Davis
PostgreSQL Contributor Team - AWS

Commits

Fix race condition where heap_delete() fails to pin VM page.
- cab72f0fd08c 12.13 landed
- 410c422b75ac 13.9 landed
- 21934612d86a 14.6 landed
- dd6070bc8173 15.0 landed
- 163b0993a162 16.0 landed
Avoid improbable PANIC during heap_update.
- 5f12bc94dcc6 12.7 cited
Remove tupgone special case from vacuumlazy.c.
- 8523492d4e34 14.0 cited