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Re: Fix bug of clearing of waitStart in ProcWakeup()

Chao Li <li.evan.chao@gmail.com>

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From: Chao Li <li.evan.chao@gmail.com>
To: Fujii Masao <masao.fujii@gmail.com>
Cc: ji xu <thanksgreed@gmail.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-02-24T22:03:14Z
Lists: pgsql-hackers

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> On Feb 24, 2026, at 23:41, Fujii Masao <masao.fujii@gmail.com> wrote:
> 
> On Tue, Feb 24, 2026 at 4:31 PM ji xu <thanksgreed@gmail.com> wrote:
>> 
>> 
>> Chao Li <li.evan.chao@gmail.com> 于2026年2月24日周二 14:29写道：
>>> 
>>> 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.
>>> 
>>> As written, it will incorrectly clear the caller’s waitStart instead of the awakened backend’s, potentially leaving a stale waitStart value in the target PGPROC.
> 
> Thanks for the report!
> 

I just realized that I forgot to attach the patch file. Anyway, that’s just a one-line change.

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

Commits

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  1. Fix ProcWakeup() resetting wrong waitStart field.