Re: BUG #17655: crash postgres by query

Hi,

On Thu, Oct 20, 2022 at 02:16:55PM +0000, PG Bug reporting form wrote:
> The following bug has been logged on the website:
>
> Bug reference:      17655
> Logged by:          Kos Dav
> Email address:      kdavydenka@gmail.ru
> PostgreSQL version: 10.19
> Operating system:   Red Hat Enterprise Linux Server 7.8 (Maipo)
> Description:
>
> log from journalctl
> Oct 20 14:52:21 server1 kernel: show_signal_msg: 537 callbacks suppressed
> Oct 20 14:52:21 server1 kernel: postgres[9328]: segfault at 1e88ff3 ip
> 00007f55ad8414ff sp 00007fff0031e7f8 error 4 in
> libc-2.17.so[7f55ad6eb000+1c3000]
> Oct 20 14:52:21 server1 abrt-hook-ccpp[9329]: Process 35274(postgres) of
> user 26 killed by SIGSEGV - dumping core
>
>
> log from postgres
> server process (PID 35274) was terminated by signal 11: Segmentation fault
>  Failed process was running:
>     select customer_id, birth_place from last_golden_record lgr where
> birth_place like U&'%\000A%'

Unfortunately this isn't enough information to understand the problem.  However
a common cause for a SIGSEGV on a query like that is some corruption on the
table.

Could you try to get a stack trace?  See
https://wiki.postgresql.org/wiki/Getting_a_stack_trace_of_a_running_PostgreSQL_backend_on_Linux/BSD#Getting_a_trace_from_a_randomly_crashing_backend.