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

[Jean Louis]

* Eli Zaretskii <eliz@gnu.org> [2020-11-23 23:32]:
> > Date: Mon, 23 Nov 2020 23:18:13 +0300
> > From: Jean Louis <bugs@gnu.support>
> > Cc: Eli Zaretskii <eliz@gnu.org>, fweimer@redhat.com,
> >   43389@debbugs.gnu.org, dj@redhat.com, michael_heerdegen@web.de,
> >   trevor@trevorbentley.com
> > 
> > Thread 1 (Thread 0x7f6b049e9100 (LWP 25584)):
> > #0  0x00007f6afd4765dc in pselect () at /lib/libc.so.6
> > #1  0x00000000005cf500 in really_call_select (arg=0x7ffc16edfa80) at 
> > thread.c:592
> > #2  0x00000000005d006e in flush_stack_call_func (arg=0x7ffc16edfa80, 
> > func=0x5cf4b0 <really_call_select>) at lisp.h:3791
> > #3  0x00000000005d006e in thread_select (func=<optimized out>, 
> > max_fds=max_fds@entry=19, rfds=rfds@entry=0x7ffc16edfb60, 
> > wfds=wfds@entry=0x7ffc16edfbe0, efds=efds@entry=0x0, 
> > timeout=timeout@entry=0x7ffc16ee0170, sigmask=0x0) at thread.c:624
> > #4  0x00000000005eb023 in xg_select (fds_lim=19, 
> > rfds=rfds@entry=0x7ffc16ee02a0, wfds=0x7ffc16ee0320, efds=<optimized out>, 
> > timeout=<optimized out>, sigmask=<optimized out>) at xgselect.c:131
> > #5  0x00000000005aeab4 in wait_reading_process_output 
> > (time_limit=time_limit@entry=30, nsecs=nsecs@entry=0, read_kbd=-1, 
> > do_display=do_display@entry=true, wait_for_cell=wait_for_cell@entry=0x0, 
> > wait_proc=wait_proc@entry=0x0, just_wait_proc=0) at process.c:5604
> > #6  0x00000000004253f8 in sit_for (timeout=timeout@entry=0x7a, 
> > reading=reading@entry=true, display_option=display_option@entry=1) at 
> > dispnew.c:6111
> > #7  0x00000000004fe415 in read_char (commandflag=commandflag@entry=1, 
> > map=map@entry=0x3184a63, p---Type <return> to continue, or q <return> to 
> > quit---
> > rev_event=<optimized out>, 
> > used_mouse_menu=used_mouse_menu@entry=0x7ffc16ee0b5b, 
> > end_time=end_time@entry=0x0) at keyboard.c:2742
> > #8  0x0000000000500841 in read_key_sequence 
> > (keybuf=keybuf@entry=0x7ffc16ee0c50, prompt=prompt@entry=0x0, 
> > dont_downcase_last=dont_downcase_last@entry=false, 
> > can_return_switch_frame=can_return_switch_frame@entry=true, 
> > fix_current_buffer=fix_current_buffer@entry=true, 
> > prevent_redisplay=prevent_redisplay@entry=false) at keyboard.c:9546
> > #9  0x0000000000502040 in command_loop_1 () at keyboard.c:1354
> > #10 0x000000000056a40e in internal_condition_case (bfun=bfun@entry=0x501e30 
> > <command_loop_1>, handlers=handlers@entry=0x90, hfun=hfun@entry=0x4f8da0 
> > <cmd_error>) at eval.c:1359
> 
> This says Emacs is simply waiting for input.
> 
> Are you saying Emacs doesn't respond to keyboard input in this state?

Yes. But once I could kill it straight with C-x c without any
questions or something.

It happens during eww call, not immediately but during. I could do 3
times C-g and get the error and then after nothing, I could not kill
buffer, could not quit, nothing but xkill

Now, last 3 attempts I can interrupt and I get keyboard control, I can
see half page loaded. And I can kill buffer.

I was thinking maybe ivy, but I turned it off, it is not ivy.

So if I just interrupt it during loading, I have no keyboard control,
but if I continue interrupting with C-g then half page appears and I
get keyboard control.