Package: emacs;
Reported by: Óscar Fuentes <oscarfv <at> eclipso.eu>
Date: Mon, 14 Jul 2025 11:17:02 UTC
Severity: normal
Found in version 31.0.50
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Óscar Fuentes <oscarfv <at> eclipso.eu> To: bug-gnu-emacs <at> gnu.org Subject: 31.0.50; igc: infinite loop Date: Mon, 14 Jul 2025 13:15:43 +0200
On a long-lived emacs session (two weeks of intensive use), while
reverting a versioned file with C-x v u (something that I did multiple
times before on the same session) Emacs entered an infinite loop using
100% CPU, ignoring C-g and SIGUSR2 and had to be killed eventually after
attaching gdb and obtaining the backtraces below.
#0 truncate_undo_list (b=b <at> entry=0x7fb33b464b18) at ../../emacs/src/lisp.h:1534
list = <optimized out>
prev = <optimized out>
next = <optimized out>
last_boundary = 0x0
size_so_far = 20445947
count = {bytes = <optimized out>}
undo_outer_limit = <optimized out>
#1 0x00005596d35701d9 in compact_buffer (buffer=buffer <at> entry=0x7fb33b464b18)
at ../../emacs/src/buffer.c:1874
#2 0x00005596d36669e2 in buffer_step (it=<synthetic pointer>) at ../../emacs/src/igc.c:4051
buf = 0x7fb33b464b1d
b = 0x7fb33b464b18
#3 igc_on_idle () at ../../emacs/src/igc.c:4083
work_done = <optimized out>
clock = {expire = <optimized out>}
buffer_it = {alist = <optimized out>, buf = <optimized out>}
#4 0x00005596d354f2b5 in timer_check_2 (timers=<optimized out>, idle_timers=<optimized out>)
at ../../emacs/src/keyboard.c:4722
now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idleness_now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idleness_now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
funcall = <optimized out>
chosen_timer = <optimized out>
timer = <optimized out>
idle_timer = <optimized out>
--Type <RET> for more, q to quit, c to continue without paging--
difference = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
timer_difference = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idle_timer_difference = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
ripe = <optimized out>
timer_ripe = <optimized out>
idle_timer_ripe = <optimized out>
timer_time = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idle_timer_time = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
count = {bytes = <optimized out>}
old_deactivate_mark = <optimized out>
#5 timer_check () at ../../emacs/src/keyboard.c:4891
nexttime = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
timers = 0x7fb256c7dc73
idle_timers = <optimized out>
tem = <optimized out>
#6 0x00005596d354f7e5 in readable_events (flags=flags <at> entry=3) at ../../emacs/src/keyboard.c:3618
#7 0x00005596d354f9c0 in get_input_pending (flags=flags <at> entry=3) at ../../emacs/src/keyboard.c:8007
#8 0x00005596d354fad5 in Finput_pending_p (check_timers=0x38) at ../../emacs/src/keyboard.c:11799
#9 0x00007fb32f4ed5b2 in F7369742d666f72_sit_for_0 ()
at /home/oscar/dev/emacs/igc/build/src/../native-lisp/31.0.50-61e73da1/preloaded/subr-13adf6a6-dbedbcf7.eln
#10 0x00005596d35d6a0c in Ffuncall (nargs=2, args=0x7fff3751ec00) at ../../emacs/src/eval.c:3195
count = {bytes = <optimized out>}
val = <optimized out>
#11 0x00007fb32e40648e in F646973706c61792d7761726e696e67_display_warning_0 ()
at /home/oscar/.emacs.d/eln-cache/31.0.50-61e73da1/warnings-28e75f4d-f0ade81c.eln
#12 0x00005596d35d6a0c in Ffuncall (nargs=4, args=0x7fff3751ee00) at ../../emacs/src/eval.c:3195
--Type <RET> for more, q to quit, c to continue without paging--
count = {bytes = <optimized out>}
val = <optimized out>
#13 0x00007fb32f243db7 in F756e646f2d6f757465722d6c696d69742d7472756e63617465_undo_outer_limit_truncate_0
()
at /home/oscar/dev/emacs/igc/build/src/../native-lisp/31.0.50-61e73da1/preloaded/simple-fab5b0cf-9e866eaa.eln
#14 0x00005596d35d6a0c in Ffuncall (nargs=nargs <at> entry=2, args=args <at> entry=0x7fff3751ee80)
at ../../emacs/src/eval.c:3195
count = {bytes = <optimized out>}
val = <optimized out>
#15 0x00005596d35ae9ed in truncate_undo_list (b=b <at> entry=0x7fb33b464b18) at ../../emacs/src/undo.c:366
tem = <optimized out>
list = <optimized out>
prev = <optimized out>
next = <optimized out>
last_boundary = 0x0
size_so_far = <optimized out>
count = {bytes = <optimized out>}
undo_outer_limit = <optimized out>
#16 0x00005596d35701d9 in compact_buffer (buffer=buffer <at> entry=0x7fb33b464b18)
at ../../emacs/src/buffer.c:1874
#17 0x00005596d36669e2 in buffer_step (it=<synthetic pointer>) at ../../emacs/src/igc.c:4051
buf = 0x7fb33b464b1d
b = 0x7fb33b464b18
#18 igc_on_idle () at ../../emacs/src/igc.c:4083
work_done = <optimized out>
clock = {expire = <optimized out>}
--Type <RET> for more, q to quit, c to continue without paging--
buffer_it = {alist = <optimized out>, buf = <optimized out>}
#19 0x00005596d354f2b5 in timer_check_2 (timers=<optimized out>, idle_timers=<optimized out>)
at ../../emacs/src/keyboard.c:4722
now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idleness_now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idleness_now = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
funcall = <optimized out>
chosen_timer = <optimized out>
timer = <optimized out>
idle_timer = <optimized out>
difference = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
timer_difference = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idle_timer_difference = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
ripe = <optimized out>
timer_ripe = <optimized out>
idle_timer_ripe = <optimized out>
timer_time = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
idle_timer_time = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
count = {bytes = <optimized out>}
old_deactivate_mark = <optimized out>
#20 timer_check () at ../../emacs/src/keyboard.c:4891
nexttime = {tv_sec = <optimized out>, tv_nsec = <optimized out>}
timers = 0x7fb256c795b3
idle_timers = <optimized out>
tem = <optimized out>
(gdb) xbacktrace
"sit-for" (0x3751ec08)
"display-warning" (0x3751ee08)
"undo-outer-limit-truncate" (0x3751ee88)
"sit-for" (0x3751f1c8)
"display-warning" (0x3751f3c8)
"undo-outer-limit-truncate" (0x3751f448)
"sit-for" (0x3751f788)
"display-warning" (0x3751f988)
"undo-outer-limit-truncate" (0x3751fa08)
"sit-for" (0x3751fd48)
"display-warning" (0x3751ff48)
"undo-outer-limit-truncate" (0x3751ffc8)
"sit-for" (0x37520308)
"display-warning" (0x37520508)
"undo-outer-limit-truncate" (0x37520588)
"sit-for" (0x375208c8)
"display-warning" (0x37520ac8)
"undo-outer-limit-truncate" (0x37520b48)
"sit-for" (0x37520e88)
"display-warning" (0x37521088)
"undo-outer-limit-truncate" (0x37521108)
"sit-for" (0x37521448)
"display-warning" (0x37521648)
"undo-outer-limit-truncate" (0x375216c8)
"sit-for" (0x37521a08)
"display-warning" (0x37521c08)
"undo-outer-limit-truncate" (0x37521c88)
In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
version 1.18.4) of 2025-06-29 built on zen
Repository revision: 1c19182e28e90b619a4c3d5553e3b5ae03eccd12
Repository branch: feature/igc
Windowing system distributor 'The X.Org Foundation', version 11.0.12101016
System Description: Debian GNU/Linux 13 (trixie)
Configured using:
'configure 'CPPFLAGS=-O2 -fno-omit-frame-pointer -g3'
CPPFLAGS=-I/home/oscar/dev/include/mps
LDFLAGS=-L/home/oscar/dev/other/mps/code --with-native-compilation
--with-tree-sitter --without-toolkit-scroll-bars --with-x-toolkit=lucid
--with-modules --without-imagemagick --with-mps=yes'
Configured features:
CAIRO FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG LIBOTF
LIBSELINUX LIBXML2 MODULES MPS NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG
RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TREE_SITTER WEBP X11 XAW3D XDBE
XIM XPM LUCID ZLIB
Important settings:
value of $LANG: C
locale-coding-system: nil
Major mode: Lisp Interaction
Minor modes in effect:
window-highlight-mode: t
xterm-mouse-mode: t
treemacs-filewatch-mode: t
treemacs-follow-mode: t
treemacs-git-mode: t
treemacs-fringe-indicator-mode: t
org-roam-db-autosync-mode: t
fancy-compilation-mode: t
diff-hl-flydiff-mode: t
diff-hl-mode: t
difftastic-bindings-mode: t
global-git-commit-mode: t
pulsar-global-mode: t
pulsar-mode: t
evil-owl-mode: t
enhanced-evil-paredit-mode: t
evil-local-mode: t
key-chord-mode: t
paredit-mode: t
server-mode: t
display-fill-column-indicator-mode: t
vertico-multiform-mode: t
marginalia-mode: t
vertico-mode: t
which-key-mode: t
global-anzu-mode: t
anzu-mode: t
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
minibuffer-regexp-mode: t
column-number-mode: t
line-number-mode: t
indent-tabs-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
/home/oscar/elisp/singles/flx hides /home/oscar/.emacs.d/elpa/flx-20240205.356/flx
/home/oscar/elisp/magit/lisp/magit-section hides /home/oscar/.emacs.d/elpa/magit-section-20250704.2300/magit-section
/home/oscar/elisp/singles/which-key hides /home/oscar/dev/emacs/igc/emacs/lisp/which-key
Features:
(shadow sort mail-extr emacsbug help-fns radix-tree vertico-directory
mule-util vertico-sort fussy window-highlight
solarized-selenized-dark-theme solarized-selenized-light-theme
solarized-palettes solarized solarized-faces xt-mouse term/xterm xterm
meteo-radar lsp-dart lsp-dart-commands lsp-dart-flutter-widget-guide
lsp-dart-flutter-fringe-colors lsp-dart-flutter-colors lsp-dart-outline
lsp-dart-code-lens lsp-lens lsp-dart-test-tree lsp-treemacs
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treemacs-header-line treemacs-compatibility treemacs-mode
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treemacs-filewatch-mode treemacs-follow-mode treemacs-rendering
treemacs-annotations treemacs-async treemacs-workspaces treemacs-dom
treemacs-visuals treemacs-fringe-indicator treemacs-faces treemacs-icons
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reveal evil-jumps evil-command-window evil-types evil-search evil-ex
evil-macros evil-repeat evil-states evil-core evil-common rect evil-vars
mini-echo mini-echo-segments let-alist hide-mode-line face-remap wgrep
grep ag vc-svn find-dired s dash key-chord comp comp-cstr comp-run
comp-common cmake-mode rx rst compile comint ansi-osc ansi-color
paredit-menu paredit edmacro kmacro server yasnippet lisp-mnt psvn
wid-edit log-edit message sendmail yank-media puny rfc822 mml mml-sec
epa derived epg rfc6068 epg-config gnus-util text-property-search
time-date mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047
rfc2045 mm-util ietf-drums mail-prsvr mailabbrev mail-utils gmm-utils
mailheader pcvs-util add-log diff-mode track-changes pp elp ediff-merg
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dired-loaddefs display-fill-column-indicator vertico-multiform
marginalia vertico flx-rs-core flx-rs flx goto-chg avy ring
highlight-parentheses ws-butler which-key diminish cl anzu easy-mmode
thingatpt tmr pcase compat solar cal-dst cal-menu calendar cal-loaddefs
finder-inf advice cl-extra help-mode warnings disp-table
apropospriate-theme-autoloads company-posframe-autoloads
company-autoloads consult-flycheck-autoloads consult-lsp-autoloads
consult-org-roam-autoloads corfu-autoloads deadgrep-autoloads
diff-hl-autoloads eat-autoloads ellama-autoloads
embark-consult-autoloads consult-autoloads embark-autoloads
flutter-autoloads flycheck-autoloads fussy-autoloads flx-autoloads
groovy-mode-autoloads llm-autoloads lsp-dart-autoloads
dart-mode-autoloads dap-mode-autoloads bui-autoloads
lsp-docker-autoloads lsp-treemacs-autoloads lsp-ui-autoloads
lsp-mode-autoloads f-autoloads marginalia-autoloads
markdown-mode-autoloads org-roam-autoloads magit-section-autoloads
llama-autoloads emacsql-autoloads plz-event-source-autoloads
plz-media-type-autoloads plz-autoloads pomm-autoloads alert-autoloads
log4e-autoloads gntp-autoloads spinner-autoloads swiper-autoloads
ivy-autoloads symbol-overlay-autoloads treemacs-autoloads cfrs-autoloads
posframe-autoloads ht-autoloads hydra-autoloads lv-autoloads
pfuture-autoloads ace-window-autoloads avy-autoloads s-autoloads info
dash-autoloads vertico-autoloads wgrep-ag-autoloads
wgrep-deadgrep-autoloads wgrep-autoloads yaml-autoloads package
browse-url xdg url url-proxy url-privacy url-expand url-methods
url-history url-cookie generate-lisp-file url-domsuf url-util mailcap
url-handlers url-parse auth-source cl-seq eieio eieio-core cl-macs icons
password-cache json subr-x map byte-opt gv bytecomp byte-compile
url-vars cl-loaddefs cl-lib rmc iso-transl tooltip cconv eldoc paren
electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/x-win x-win term/common-win x-dnd touch-screen tool-bar dnd fontset
image regexp-opt fringe tabulated-list replace newcomment text-mode
lisp-mode prog-mode register page tab-bar menu-bar rfn-eshadow isearch
easymenu timer select scroll-bar mouse jit-lock font-lock syntax
font-core term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads inotify dynamic-setting
system-font-setting font-render-setting cairo x-toolkit x multi-tty
move-toolbar make-network-process tty-child-frames native-compile mps
emacs)
Memory information:
((conses 24 0 0) (symbols 56 0 0) (strings 40 0 0) (string-bytes 1 0)
(vectors 24 0) (vector-slots 8 0 0) (floats 24 0 0)
(intervals 64 0 0) (buffers 1072 0))
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Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.