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help / color / mirror / Atom feedFrom: Alvaro Herrera <[email protected]>
To: Michael Paquier <[email protected]>
Cc: Kyotaro Horiguchi <[email protected]>
Cc: [email protected]
Cc: [email protected]
Subject: Re: NULL pointer dereference in syslogger with load_libraries() and -DEXEC_BACKEND at startup
Date: Tue, 26 May 2026 13:09:13 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 2026-May-26, Michael Paquier wrote:
> This issue is different, it is a Postgres logic bug, so adding an
> exception like the one you are suggesting is just a shortcut hiding
> the real issue: the log file is not ready yet, but the syslogger is
> invoked at a point when it thinks the log file exists.
I think we can solve this easily by flipping a new Boolean value at the
same point were MyBackendType was previously set. The attached POC
fixes the scenario you described; can you confirm? It needs some
additional comments, of course.
(There is one more place in elog.c where we check that MyBackendType is
_not_ B_LOGGER, but I think that one is correct as-is; and I'm wondering
if that would behave correctly before 0c8e082fba8d.)
--
Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/
“Cuando no hay humildad las personas se degradan” (A. Christie)
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To: [email protected]
Cc: [email protected], [email protected], [email protected], [email protected], [email protected]
Subject: Re: NULL pointer dereference in syslogger with load_libraries() and -DEXEC_BACKEND at startup
In-Reply-To: <[email protected]>
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