Re: BUG #18503: Reproducible 'Segmentation fault' in 16.3 on ARM64

On Tue, Jun 11, 2024 at 10:08 PM PG Bug reporting form
<noreply@postgresql.org> wrote:

The query described in
https://www.postgresql.org/message-id/flat/18471-4e01d7601cedf1b0%40postgresql.org
is causing a reproducible 'Segmentation fault'.

Also on ARM?

yes, this is ARM (aarch64).

That other report said that memory is leaking and implies (?) the OOM
killer, but you're talking about a segmentation fault, so it seems
like a different symptom (even if the root cause is same), right?

when jit is disabled, the query runs ok in < 2 seconds.
when the issue happens, it takes > 30 seconds and then results in a 6GB core.

That situation is clearly reproducible, so we can help troubleshooting in
case you want to look into details.

Can you get a core file, and gdb backtrace?

find a core here:
https://my.hidrive.com/share/bz2zb2alkp

do you have instructions for the gdb backtrace?