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* BUG #17998: Postgres crashes when executing WorkTableScan.
@ 2023-06-26 03:47 PG Bug reporting form <noreply@postgresql.org>
2023-06-26 08:43 ` Re: BUG #17998: Postgres crashes when executing WorkTableScan. Heikki Linnakangas <hlinnaka@iki.fi>
0 siblings, 1 reply; 2+ messages in thread
From: PG Bug reporting form @ 2023-06-26 03:47 UTC (permalink / raw)
To: pgsql-bugs@lists.postgresql.org; +Cc: chenglin-liang@outlook.com
The following bug has been logged on the website:
Bug reference: 17998
Logged by: Jerry
Email address: chenglin-liang@outlook.com
PostgreSQL version: Unsupported/Unknown
Operating system: Ubuntu 18.04.6
Description:
I developed a fuzzing tool that skips the optimizer and directly uses the
correct physical plan to fuzz postgres, and found a crash caused by
executing WorkTableScan.
For detailed steps to reproduce, see the
link:https://github.com/chenglinLiang/pg-report.
-- Environment --
PG version: 10.23
Platform: Ubuntu 18.04.6
Kernel: Linux 5.15.0-75-generic
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: BUG #17998: Postgres crashes when executing WorkTableScan.
2023-06-26 03:47 BUG #17998: Postgres crashes when executing WorkTableScan. PG Bug reporting form <noreply@postgresql.org>
@ 2023-06-26 08:43 ` Heikki Linnakangas <hlinnaka@iki.fi>
0 siblings, 0 replies; 2+ messages in thread
From: Heikki Linnakangas @ 2023-06-26 08:43 UTC (permalink / raw)
To: chenglin-liang@outlook.com; pgsql-bugs@lists.postgresql.org
On 26/06/2023 06:47, PG Bug reporting form wrote:
> I developed a fuzzing tool that skips the optimizer and directly uses the
> correct physical plan to fuzz postgres, and found a crash caused by
> executing WorkTableScan.
> For detailed steps to reproduce, see the
> link:https://github.com/chenglinLiang/pg-report.
You need to provide some evidence that the plan your fuzzer generated is
valid, ie. something that could be produced by the planner. At a quick
glance, you have a WorkTableScan with no RecursiveUnion, which is bogus.
--
Heikki Linnakangas
Neon (https://neon.tech)
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2023-06-26 03:47 BUG #17998: Postgres crashes when executing WorkTableScan. PG Bug reporting form <noreply@postgresql.org>
2023-06-26 08:43 ` Heikki Linnakangas <hlinnaka@iki.fi>
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