Re: BUG #14475: buffer overflow and segmentation fault

fabris(at)colliniconsulting(dot)it writes:
> Hi, not sure if the root cause is posgres or bulkload. All I have are lines
> of log
> The failed query runs ( usually ) regularly several time a day

Can't do anything about this with this level of detail, although I'd
suggest that the backtrace tends to point the finger at pg_bulkload:

> /lib64/libc.so.6(__fortify_fail+0x37)[0x7feb01837597]
> /lib64/libc.so.6(+0x10c750)[0x7feb01835750]
> /lib64/libc.so.6(+0x10e507)[0x7feb01837507]
> /usr/pgsql-9.6/lib/pg_bulkload.so(+0x15ef6)[0x7feaedc86ef6]
> /usr/pgsql-9.6/lib/pg_bulkload.so(+0x12b8b)[0x7feaedc83b8b]
> /usr/pgsql-9.6/lib/pg_bulkload.so(pg_bulkload+0x615)[0x7feaedc7f1a5]

If you can get a more symbolic trace it would doubtless help the
pg_bulkload crew analyze this. See advice about adding symbols at
https://wiki.postgresql.org/wiki/Getting_a_stack_trace_of_a_running_PostgreSQL_backend_on_Linux/BSD

regards, tom lane