From: Tom Lane <tgl@sss.pgh.pa.us>
To: Peter Geoghegan <pg@bowt.ie>
cc: sireesha <sireesha.padmini@gmail.com>, pgsql-admin@lists.postgresql.org
Subject: Re: Mutex error 22 - Postgres version 14
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Comments: In-reply-to Peter Geoghegan <pg@bowt.ie>
	message dated "Wed, 01 Feb 2023 16:14:21 -0800"
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Date: Wed, 01 Feb 2023 19:18:55 -0500
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Peter Geoghegan <pg@bowt.ie> writes:
> On Wed, Feb 1, 2023 at 3:02 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>>> 2023-01-24 02:35:45.833 PST [3424807] LOG:  PID 0 in cancel request di=
d not
>>> match any process
>>> *Error locking mutex 22*

> I wonder if 22 might be EINVAL, which is one possible error code used
> by pthread_mutex_lock().

Maybe, but we still don't know what's reporting the error.

I tried searching for "Error locking mutex" in Debian Code Search,
and got several hits, but none of them match this exactly --- the
ones that offer any additional info present it as a string not a
number.

			regards, tom lane