Re: dsa_allocate() faliure

Hi,

On Mon, Nov 26, 2018 at 09:52:07AM -0600, Justin Pryzby wrote:
> Hi, thanks for following through.
> 
> On Mon, Nov 26, 2018 at 04:38:35PM +0100, Jakub Glapa wrote:
> > I had a look at dmesg and indeed I see something like:
> > 
> > postgres[30667]: segfault at 0 ip 0000557834264b16 sp 00007ffc2ce1e030
> > error 4 in postgres[557833db7000+6d5000]
> 
> That's useful, I think "at 0" means a null pointer dereferenced.

Thomas fixed several bugs in DSA, which will be in next release, postgres 10.8
and 11.3.

However that doesn't explain the segfault you saw, and I don't see anything
which looks relevant changed since in 10.5.

If you still see that using the latest minor release (10.7), please try to
capture a core file and send a backtrace with a new thread on pgsql-hackers.

Thanks,
Justin