Horton

Re: Strange failure in LWLock on skink in REL9_5_STABLE

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2018-09-21T02:59:29Z
Lists: pgsql-hackers 
Thomas Munro <thomas.munro@enterprisedb.com> writes:
> Andres pinged me off-list to point out this failure after my commit fb389498be:

> ! FATAL:  semop(id=332464133) failed: Invalid argument

I was just looking at that, and my guess is that it was caused by
something doing an ipcrm or equivalent, and is unrelated to your patch.
Especially since skink has succeeded with that patch in several other
branches.

If it's repeatable, then it would be time to get excited.

			regards, tom lane

Commits

  1. Remove some remaining traces of dsm_resize().

  2. Remove dsm_resize() and dsm_remap().

  3. Allow DSM allocation to be interrupted.