bug#9221: Memory leak

[Stefan Monnier]

I'm seeing some weird behavior linked to insane memory consumption.
E.g. my Gnus session tends to grow to more than 2GB and then become
unusage and unkillable (or close enough: in D state, "kill -9" isn't
enough to make it stop use CPU, tho I guess that CPU use is really due
to something like the OS being in the process of dumping the core file,
tho I don't see any left over core files).

I did manage to attach to it and get a few backtraces (with
a breakpoint on mmap) before it was too late, and bidi_shelve_cache
showed up in most of the backtraces (like 5 out of 8, maybe): not
a strong indictment, but at least a lead worth following until I get
more data.


        Stefan




In GNU Emacs 24.0.50.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2011-08-01 on ceviche
Windowing system distributor `The X.Org Foundation', version 11.0.11002000
configured using `configure  'CFLAGS=-Wall -Wno-pointer-sign 
-DUSE_LISP_UNION_TYPE -DSYNC_INPUT -DENABLE_CHECKING -DXASSERTS -DFONTSET_DEBUG 
-g -O1 -I/usr/include/GNUstep' '--enable-maintainer-mode' 
'--with-x-toolkit=lucid''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: fr_CH.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: InactiveMinibuffer

Minor modes in effect:
  shell-dirtrack-mode: t
  electric-pair-mode: t
  electric-indent-mode: t
  url-handler-mode: t
  global-reveal-mode: t
  reveal-mode: t
  auto-insert-mode: t
  savehist-mode: t
  minibuffer-electric-default-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
p C-e <left> <M-backspace> S e p C-a C-x C-s C-c C-c 
<return> <down> <left> <return> \ n e w c o M-/ SPC 
\ c h a p t e r <backspace> <backspace> <backspace> 
i t r e SPC { c h a p t e r C-e <return> \ n e w c 
o m m a n d SPC \ M a y SPC { M a y C-e C-a C-k C-y 
C-y <left> <left> <M-backspace> A u g <left> <left> 
<left> <left> <left> <M-backspace> A u g C-a C-p C-p 
C-k C-n C-n C-y C-x C-s C-c C-c <return> C-c C-c <return> 
<switch-frame> <switch-frame> <help-echo> <help-echo> 
<switch-frame> <switch-frame> <help-echo> <switch-frame> 
<switch-frame> <help-echo> <switch-frame> <switch-frame> 
<help-echo> <right> <right> <right> <right> <down> 
<down> <down> <down> <down> <down> <down> <down> <next> 
<next> <prior> <prior> <next> <next> <help-echo> <switch-frame> 
<switch-frame> <switch-frame> <switch-frame> <switch-frame> 
C-s \ J u n <right> <left> { } C-/ M-< <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <down> <down> <down> 
<down> <down> <down> <down> <down> <left> <left> ~ 
<down> <left> <down> <left> ~ <down> <down> <left> 
<left> ~ <down> <down> <left> <left> ~ <down> <down> 
<left> <left> ~ <down> <left> <right> M-f <right> C-s 
C-w C-s C-a C-x C-s C-c C-c <return> <switch-frame> 
<switch-frame> <switch-frame> <switch-frame> <switch-frame> 
<help-echo> <prior> <next> <prior> <prior> <prior> 
<next> <next> <next> <help-echo> <switch-frame> <switch-frame> 
<help-echo> <switch-frame> <switch-frame> <switch-frame> 
<switch-frame> <help-echo> <next> <next> <prior> <help-echo> 
<switch-frame> <switch-frame> <switch-frame> M-x l 
o - l i <tab> <return> a <tab> <return> s m i e <return> 
M-x <tab> C-g C-h f s m i e - r u <tab> <tab> C-g M-x 
r e p o <tab> r <tab> <return>

Recent messages:
Type C-c C-c to toggle between editing or viewing the document.
Warning: interactive-p is obsolete! [8 times]
Making completion list...
Loading smie...done
Making completion list...
Quit
Making completion list...
Quit
Warning: interactive-p is obsolete! [2 times]
Making completion list...

Load-path shadows:
None found.

Features:
(shadow sort mail-extr message rfc822 mml mml-sec mm-decode mm-bodies
mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev
mail-utils gmm-utils mailheader emacsbug smie cus-edit cus-start
cus-load wid-edit autorevert doc-view jka-compr image-mode dired dabbrev
multi-isearch format-spec reftex-vcr reftex-dcr reftex reftex-vars
tex-mode compile shell pcomplete comint ring latexenc executable
copyright vc-bzr filecache longlines server noutline outline easy-mmode
flyspell ispell eldoc checkdoc regexp-opt thingatpt help-mode view
prog-mode load-dir electric url-handlers url-parse auth-source warnings
eieio byte-opt bytecomp byte-compile cconv macroexp assoc gnus-util
password-cache url-vars mm-util mail-prsvr reveal autoinsert uniquify
advice help-fns advice-preload time-date savehist minibuf-eldef
disp-table cl cl-loaddefs all-autoloads company-autoloads
debbugs-autoloads epoch-view-autoloads js2-mode-autoloads
load-dir-autoloads markchars-autoloads minimap-autoloads muse-autoloads
info easymenu rainbow-mode-autoloads register-list-autoloads
sisu-mode-autoloads uni-confusables-autoloads windresize-autoloads
package tabulated-list proof-site proof-autoloads pg-vars bbdb-autoloads
agda2 tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
tool-bar dnd fontset image fringe lisp-mode register page newcomment
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face files text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote
make-network-process dbusbind dynamic-setting system-font-setting
font-render-setting x-toolkit x multi-tty emacs)