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Re: [BUG] PostgreSQL crashes with ThreadSanitizer during early initialization

Quan Zongliang <quanzongliang@yeah.net>

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From: Quan Zongliang <quanzongliang@yeah.net>
To: Emmanuel Sibi <emmanuelsibi.mec@gmail.com>
Cc: Aleksander Alekseev <aleksander@tigerdata.com>, pgsql-hackers@lists.postgresql.org
Date: 2025-09-23T03:08:47Z
Lists: pgsql-hackers 

On 9/15/25 11:19 PM, Emmanuel Sibi wrote:
> Hi Quan, Thanks for testing the patch! I'm glad it resolves the startup crash.
> 
> Fast shutdown:
> 2025-09-15 20:20:07.454 IST [28229] LOG: received fast shutdown request
> [...]
> 2025-09-15 20:20:07.574 IST [28229] LOG: database system is shut down
> Smart shutdown:
> 2025-09-15 20:28:14.271 IST [31263] LOG: received smart shutdown request
> [...]
> 2025-09-15 20:28:14.399 IST [31263] LOG: database system is shut down
> 
> All modes complete within seconds with the final "database system is
> shut down" message, unlike the hang you're experiencing.
> The patch only moves __ubsan_default_options() to a separate
> compilation unit to avoid TSan initialization issues during startup.
> It doesn't modify any shutdown logic or signal handling code.
> My Environment: Ubuntu 24.04.1, clang 18, PostgreSQL 17.2.
> 
Great! My OS is macOS 15.6.1. I will continue to test to confirm if 
there are any other issues. If so, I will create a separate patch.

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Avoid possible crash within libsanitizer.