Re: BUG #2769: "invalid memory alloc request size <n>" on startup

"Chris Jones" <chris(at)cjones(dot)org> writes:
> After several uncontrolled reboots of the server, one of my hosted sites'
> databases is giving an error on any attempt to connect to the DB. Trying to
> distill this down to the simplest case possible, I stopped the postmaster
> and ran postgres in standalone mode, with just that database. Setting the
> debug level didn't seem to accomplish anything:

> pgsql(at)maxine$ postgres -D data -d 5 drupal_dearslut
> FATAL: invalid memory alloc request size 1095237632

This looks like a problem of corrupt data in one of the system catalogs
or its indexes, but there's not enough info here to guess where.

> I used to be decent with gdb, so let me know if there's anything I can do as
> far as backtraces, etc.

Try setting a breakpoint at errfinish() and backtracing from there.

regards, tom lane