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From: Alexander Korotkov <[email protected]>
To: Noah Misch <[email protected]>
Cc: Dmitry Koval <[email protected]>
Cc: [email protected]
Subject: Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
Date: Fri, 9 Aug 2024 01:43:11 +0300
Message-ID: <CAPpHfdtgj4+QO2AuA144XxFgD1TkUDTx+ssL5euBt83knaygjg@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <171085360143.2046436.7217841141682511557.pgcf@coridan.postgresql.org>
	<171085858750.2046434.12246066729700037354.pgcf@coridan.postgresql.org>
	<[email protected]>
	<CAPpHfdsVQwnZPxaQPwcu1g_01F0d-o=ECRcf14X3CmavJB6vSQ@mail.gmail.com>
	<[email protected]>
	<CAPpHfdsCCV8DOv0Ovu4dTSnuWXiEz_AjuW-J6TPj++tcfEGvRw@mail.gmail.com>
	<[email protected]>
	<CAPpHfduNYkMVuUSxZjD6u4tZG6aKdhgQcmhr-K9OQfeg56MNww@mail.gmail.com>
	<[email protected]>
	<CAPpHfdtj7YsPaASoVPN+N3H4_Ct+kQw8QY1d_9u7FPnbghkicw@mail.gmail.com>
	<[email protected]>

On Thu, Aug 8, 2024 at 8:14 PM Noah Misch <[email protected]> wrote:
> On Sun, Apr 07, 2024 at 01:22:51AM +0300, Alexander Korotkov wrote:
> > I've pushed 0001 and 0002
>
> The partition MERGE (1adf16b8f) and SPLIT (87c21bb94) v17 patches introduced
> createPartitionTable() with this code:
>
>         createStmt->relation = newPartName;
> ...
>         wrapper->utilityStmt = (Node *) createStmt;
> ...
>         ProcessUtility(wrapper,
> ...
>         newRel = table_openrv(newPartName, NoLock);
>
> This breaks from the CVE-2014-0062 (commit 5f17304) principle of not repeating
> name lookups.  The attached demo uses this defect to make one partition have
> two parents.

Thank you for a valuable report.  I will dig into and fix that.

------
Regards,
Alexander Korotkov
Supabase






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  Subject: Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
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