| From: | Anthonin Bonnefoy <anthonin(dot)bonnefoy(at)datadoghq(dot)com> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Gregory Burd <greg(at)burd(dot)me>, Matheus Alcantara <matheusssilv97(at)gmail(dot)com> |
| Subject: | Re: LLVM JITLink attempt II (WIP) |
| Date: | 2026-01-09 17:21:40 |
| Message-ID: | CAO6_Xqr5K1nqgWy9yyB1eX0C8mJ9WEb8PaA32kEfaXxfXzzHpw@mail.gmail.com |
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| Lists: | pgsql-hackers |
> Though if I try to perf inject the dumps, I have the following errors
> jitdump file contains invalid or unsupported flags 0xf5880666c26c
> 0x2b750 [0xa8]: failed to process type: 10 [Operation not permitted]
> But that might be an issue with my setup, I would need to test it
> further to understand the issue...
After some additional investigation, I think that's a LLVM issue: The
Flags field is never initialised so the JIT perf plugin was writing
random data in the JIT dump header.
I've opened a PR[0] to fix this.
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