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Subject: Re: Fix bug of clearing of waitStart in ProcWakeup()
From: Chao Li <li.evan.chao@gmail.com>
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 <CAHGQGwEZJ-vo0gW0=kjbag2-UMk6j_qt58JV4x05f=kB5OrT1g@mail.gmail.com>
Date: Thu, 26 Feb 2026 09:04:01 +0800
Cc: ji xu <thanksgreed@gmail.com>,
 PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
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To: Fujii Masao <masao.fujii@gmail.com>
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 <https://www.postgresql.org/message-id/73B94181-ED28-4BFD-9FF4-20D236DCEBA4%40gmail.com>
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> On Feb 26, 2026, at 08:08, Fujii Masao <masao.fujii@gmail.com> wrote:
>=20
> On Wed, Feb 25, 2026 at 7:03=E2=80=AFAM Chao Li =
<li.evan.chao@gmail.com> wrote:
>>=20
>>=20
>>=20
>>> On Feb 24, 2026, at 23:41, Fujii Masao <masao.fujii@gmail.com> =
wrote:
>>>=20
>>> On Tue, Feb 24, 2026 at 4:31=E2=80=AFPM ji xu =
<thanksgreed@gmail.com> wrote:
>>>>=20
>>>>=20
>>>> Chao Li <li.evan.chao@gmail.com> =E4=BA=8E2026=E5=B9=B42=E6=9C=8824=E6=
=97=A5=E5=91=A8=E4=BA=8C 14:29=E5=86=99=E9=81=93=EF=BC=9A
>>>>>=20
>>>>> Since this function is clearly operating on the parameter proc, =
the only statement that touches MyProc looks suspicious. It should reset =
proc->waitStart, not MyProc->waitStart.
>>>>>=20
>>>>> As written, it will incorrectly clear the caller=E2=80=99s =
waitStart instead of the awakened backend=E2=80=99s, potentially leaving =
a stale waitStart value in the target PGPROC.
>>>=20
>>> Thanks for the report!
>>>=20
>>=20
>> I just realized that I forgot to attach the patch file. Anyway, =
that=E2=80=99s just a one-line change.
>=20
> I've pushed the patch. Thanks!
>=20
> Regards,
>=20
> --=20
> Fujii Masao

Hi Fujii-san, thank you very much for taking care of this patch.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/