Re: strange valgrind reports about wrapper_handler on 64-bit arm

From: Nathan Bossart <nathandbossart(at)gmail(dot)com>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Tomas Vondra <tomas(at)vondra(dot)me>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: strange valgrind reports about wrapper_handler on 64-bit arm
Date: 2025-03-07 16:36:35
Message-ID: Z8sgkxMDlXVENIHb@nathan
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Fri, Mar 07, 2025 at 11:32:28AM -0500, Andres Freund wrote:
> Is it possible that the signal number we're getting called for is above
> PG_NSIG? That'd explain why the source value is something fairly random?
>
> ISTM that we should add an Assert() to wrapper_handler() that ensures that the
> signal arg is below PG_NSIG.

We have such an assertion in pqsignal() before we install wrapper_handler
for anything. Is there another way it could be getting called with a
different signo?

--
nathan

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Andres Freund 2025-03-07 16:38:13 Re: [PATCH] pg_stat_activity: make slow/hanging authentication more visible
Previous Message Andres Freund 2025-03-07 16:32:28 Re: strange valgrind reports about wrapper_handler on 64-bit arm