MIME-Version: 1.0
From: Daria Shanina <vilensipkdm@gmail.com>
Date: Thu, 25 Jun 2026 17:54:46 +0300
Message-ID: 
 <CAMp4U1d177Jf9ZJwXGKom6APx3LSFATa=Z-M=N5kLzvTUcxutw@mail.gmail.com>
Subject: Set huge_page_size on 32bit system
To: pgsql-bugs@lists.postgresql.org
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Hi all,

I found an error: on 32bit system (I tested on Debian 6.1.0-32-686-pae #1
SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) i686 GNU/Linux) when we
set huge_page_size =3D 1 TB postgres process fails with signal SIGFPE when
calculated hugepagesize_local =3D (Size) huge_page_size * 1024; the value
exceeds max for unsigned int =3D (2^32 =E2=80=93 1).
I attached a full backtrace and one small fix.

What do you think about this?
Thank you for your attention!

--
Best regards,
Daria Shanina

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<div dir=3D"ltr"><div><span style=3D"background-color:transparent">Hi all,<=
/span></div><div><br>I found an error: on 32bit system (I tested on Debian =
6.1.0-32-686-pae #1 SMP PREEMPT_DYNAMIC Debian 6.1.129-1 (2025-03-06) i686 =
GNU/Linux) when we set huge_page_size =3D 1 TB postgres process fails with =
signal SIGFPE when calculated hugepagesize_local =3D (Size) huge_page_size =
* 1024; the value exceeds max for unsigned int =3D (2^32 =E2=80=93 1).<br>I=
 attached a full backtrace and one small fix.<br><br>What do you think abou=
t this?<br>Thank you for your attention!<br><br>--<br>Best regards,<br>Dari=
a Shanina</div><br></div>

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