Re: CVE-2017-7484-induced bugs, or, btree cmp functions are notleakproof?

On 2018/11/01 20:34, Dilip Kumar wrote:
> On Mon, Oct 29, 2018 at 2:53 PM Amit Langote wrote:
>> Anyway, why don't we just use the child table's AppendRelInfo to get the
>> parent's version of varattno instead of creating a new function?  It can
>> be done as shown in the attached revised version of the portion of the
>> patch changing selfuncs.c.  Please take a look.
> 
> +1

Okay, here are two patches:

0001 adds a new RelOptInfo member inh_root_parent that's set for
inheritance child otherrels and contains the RT index of the inheritance
parent table mentioned in the query from which they originated.

0002 is your patch that modifies examine_variable, etc. to use the
permissions granted on parent before reading stats on otherrel inheritance
child tables. I've added your name as the author in the 2nd patch.

Thanks,
Amit