bug#43389: 28.0.50; Emacs memory leaks using hard disk all time

[Jean Louis]

* Carlos O'Donell <carlos@redhat.com> [2020-11-23 22:37]:
> > 
> > # MTRACE_CTL_VERBOSE=1
> > MTRACE_CTL_FILE=/home/data1/protected/tmp/mtraceEMACS.mtr 
> > LD_PRELOAD=/home/data1/protected/Programming/git/glibc-malloc-trace-utils/libmtrace.so
> >  emacs >> $DEBUG 2>&1
> > 
> > I have tried like above and it will block as soon as eww is loads some
> > page with the same error as previously.
> 
> That's interesting. Are you able to attach gdb and get a backtrace to see
> what the process is blocked on?

I can do C-g one time to interrupt something going on, then I get error

(gdb) continue
Continuing.
[New Thread 0x7f10ed01fc00 (LWP 25293)]
[New Thread 0x7f10ed007c00 (LWP 25294)]
[New Thread 0x7f10ecfefc00 (LWP 25295)]
[New Thread 0x7f10ecfd7c00 (LWP 25296)]
[Thread 0x7f10ed01fc00 (LWP 25293) exited]
[Thread 0x7f10ed007c00 (LWP 25294) exited]
[Thread 0x7f10ecfd7c00 (LWP 25296) exited]
[Thread 0x7f10ecfefc00 (LWP 25295) exited]
HERE I cannot do anything with GDB prompt, there is no prompt, I can
C-c and I get:

gdb) continue
Continuing.
[New Thread 0x7f10ed01fc00 (LWP 25293)]
[New Thread 0x7f10ed007c00 (LWP 25294)]
[New Thread 0x7f10ecfefc00 (LWP 25295)]
[New Thread 0x7f10ecfd7c00 (LWP 25296)]
[Thread 0x7f10ed01fc00 (LWP 25293) exited]
[Thread 0x7f10ed007c00 (LWP 25294) exited]
[Thread 0x7f10ecfd7c00 (LWP 25296) exited]
[Thread 0x7f10ecfefc00 (LWP 25295) exited]

continue
^C
Thread 1 "emacs" received signal SIGINT, Interrupt.
0x00007f10fe08fe7d in read () from /lib/libpthread.so.0