Re: BUG #15420: Server crash. Segmentation fault when parsing xml file

From: Andrey Borodin <x4mmm(at)yandex-team(dot)ru>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: sergey(at)mirvoda(dot)com, borodin(at)octonica(dot)com, Michael Paquier <michael(at)paquier(dot)xyz>, pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #15420: Server crash. Segmentation fault when parsing xml file
Date: 2018-10-04 11:43:29
Message-ID: B0545593-712F-45D5-B24C-EF43AF37A793@yandex-team.ru
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> 4 окт. 2018 г., в 16:38, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> написал(а):
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> Actually we found this error in very fresh intatallation of Ubuntu 16.04 and postgres 10.5
> After that we checked every configuration we have.
> And only postgres 9.4 works as expected.
>
> This issue is related to libxml2 limits - and it cannot to work with modern libxml2 libraries.
Yes, root cause is inside libxml2 code.

Can we protect postmaster from crashing from libxml2 error? There is a bunch of PG_TRY there, but it does not help.

Best regards, Andrey Borodin.

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