Обсуждение: Shouldn't execParallel.c null-terminate query_string in the parallel DSM?

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Shouldn't execParallel.c null-terminate query_string in the parallel DSM?

От
Thomas Munro
Дата:
Hi hackers,

I just saw some trailing garbage in my log file emanating from a
parallel worker when my query happened to be a BUFFERALIGNed length
(in this case 64 characters).  Did commit 4c728f382970 forget to make
sure the null terminator is copied?  See attached proposed fix.

-- 
Thomas Munro
http://www.enterprisedb.com

Вложения

Re: Shouldn't execParallel.c null-terminate query_string in theparallel DSM?

От
Rafia Sabih
Дата:


On Wed, Dec 20, 2017 at 7:58 AM, Thomas Munro <thomas.munro@enterprisedb.com> wrote:
Hi hackers,

I just saw some trailing garbage in my log file emanating from a
parallel worker when my query happened to be a BUFFERALIGNed length
(in this case 64 characters).  Did commit 4c728f382970 forget to make
sure the null terminator is copied?  See attached proposed fix.

Yes, I missed that.
Your patch looks good to me, thanks. 

--
Regards,
Rafia Sabih

Re: Shouldn't execParallel.c null-terminate query_string in theparallel DSM?

От
Robert Haas
Дата:
On Wed, Dec 20, 2017 at 2:03 AM, Rafia Sabih
<rafia.sabih@enterprisedb.com> wrote:
> On Wed, Dec 20, 2017 at 7:58 AM, Thomas Munro
> <thomas.munro@enterprisedb.com> wrote:
>> I just saw some trailing garbage in my log file emanating from a
>> parallel worker when my query happened to be a BUFFERALIGNed length
>> (in this case 64 characters).  Did commit 4c728f382970 forget to make
>> sure the null terminator is copied?  See attached proposed fix.
>>
> Yes, I missed that.
> Your patch looks good to me, thanks.

Sigh.  I missed that too.  Committed and back-patched to v10.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company