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In-Reply-To: <DC203E71-0319-4832-8079-C8EE2260531C@yesql.se>
From: Ayush Tiwari <ayushtiwari.slg01@gmail.com>
Date: Mon, 20 Apr 2026 11:38:49 +0530
Message-ID: 
 <CAJTYsWUuCY+xeTyF_J5APNhCKkbJs2AdYUSuJRN4F_8YZfJ_8g@mail.gmail.com>
Subject: Re: [BUG] Race in online checksums launcher_exit()
To: Daniel Gustafsson <daniel@yesql.se>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
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Hi,

On Mon, 20 Apr 2026 at 01:47, Daniel Gustafsson <daniel@yesql.se> wrote:

> > On 19 Apr 2026, at 22:09, Ayush Tiwari <ayushtiwari.slg01@gmail.com>
> wrote:
> >
> > Hi hackers,
> >
> > While using the pg_enable_data_checksums() feature, I found a likely
> bug, a race condition in  datachecksum_state.c's launcher_exit().
>
> Thanks for your report.  Tomas and I have worked over the past couple of
> days
> on a fixup series due to a rare race condition which was found after
> extensive
> longrunning testing.  While hacking on that we identified what I believe
> is the
> same bug you found and we have a fix for that, the patchset will be shared
> very
> shortly (we am literally putting the final touches on it as I write this).
> I'll compare notes and will if applicable incorporate your patch into it.
>
> --
> Daniel Gustafsson
>
>
Thanks Daniel! Glad to hear it's being addressed. I would be happy to
test the patchset when it's posted.

Regards,
Ayush

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<div dir=3D"ltr"><div dir=3D"ltr">Hi,</div><br><div class=3D"gmail_quote gm=
ail_quote_container"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, 20 Apr 2=
026 at 01:47, Daniel Gustafsson &lt;<a href=3D"mailto:daniel@yesql.se">dani=
el@yesql.se</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex">&gt; On 19 Apr 2026, at 22:09, Ayush Tiwari &lt;<a href=3D"mailt=
o:ayushtiwari.slg01@gmail.com" target=3D"_blank">ayushtiwari.slg01@gmail.co=
m</a>&gt; wrote:<br>
&gt; <br>
&gt; Hi hackers,<br>
&gt; <br>
&gt; While using the pg_enable_data_checksums() feature, I found a likely b=
ug, a race condition in=C2=A0 datachecksum_state.c&#39;s launcher_exit().<b=
r>
<br>
Thanks for your report.=C2=A0 Tomas and I have worked over the past couple =
of days<br>
on a fixup series due to a rare race condition which was found after extens=
ive<br>
longrunning testing.=C2=A0 While hacking on that we identified what I belie=
ve is the<br>
same bug you found and we have a fix for that, the patchset will be shared =
very<br>
shortly (we am literally putting the final touches on it as I write this).<=
br>
I&#39;ll compare notes and will if applicable incorporate your patch into i=
t.<br>
<br>
--<br>
Daniel Gustafsson<br>
<br></blockquote><div><br></div>Thanks Daniel! Glad to hear it&#39;s being =
addressed.=C2=A0I would be happy to<br><div>test the patchset when it&#39;s=
 posted.=C2=A0<br><br>Regards,<br>Ayush</div></div></div>

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