Horton

Re: Strange failure on mamba

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Thomas Munro <thomas.munro@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2022-11-30T06:06:47Z
Lists: pgsql-hackers 
Hi,

On 2022-11-29 20:44:34 -0500, Tom Lane wrote:
> It's also strange that we're apparently running with signals enabled
> whereever it is that rtld_bind is getting called from.  Could it be that
> sigaction is failing to install the requested signal mask, so that one
> postmaster signal handler is interrupting another?

This made me look at pqsignal_pm() / pqsignal() and realize that we wouldn't
even notice if it failed, because they just return SIG_ERR and callers don't
check. I don't think that's a likely to be related, but theoretically it could
lead to some odd situations.

Greetings,

Andres Freund

Commits

  1. Provide options for postmaster to kill child processes with SIGABRT.

  2. On NetBSD, force dynamic symbol resolution at postmaster start.