bug#66127: 28.2; emacs crash after single C-g

bug#66127: 28.2; emacs crash after single C-g

[tom]

Sorry I do not have a minimal test case.

Since a long time ago, single C-g crashes emacs for me so when there is
something long running blocking emacs, it is not possible to reliably
interrupt it.

I observe this behaviour often when using the notmuch email client and
trying to display a long thread.  When notmuch block emacs for ages and
I press single C-g, sometimes I get the following crash:

Fatal error 11: Segmentation fault
Backtrace:
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5251c8]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x41f4e6]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x41f9e8]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x523398]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x52341c]
/nix/store/46m4xx889wlhsdj72j38fnlyyvvvvbyb-glibc-2.37-8/lib/libc.so.6(+0x38d60)[0x7f6e33852d60]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5efcba]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5eff11]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/../lib/emacs/28.2/native-lisp/28.2-d1746297/preloaded/jit-lock-8a988e43-703cd7fb.eln(F6a69742d6c6f636b2d666f6e746966792d6e6f77_jit_lock_fontify_now_0+0x2d2)[0x7f6e316b0172]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/../lib/emacs/28.2/native-lisp/28.2-d1746297/preloaded/jit-lock-8a988e43-703cd7fb.eln(F6a69742d6c6f636b2d66756e6374696f6e_jit_lock_function_0+0x232)[0x7f6e316afaf2]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588981]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x43e5f4]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x44d95c]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x44daf8]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x452fd6]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x458788]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4566b5]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x458ae0]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x45ac77]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x455876]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x47c514]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4814ab]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x58865c]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x441149]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x441105]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x46b751]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x46d705]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4289ee]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
/nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/native-lisp/28.2-d1746297/notmuch-show-482175f2-4dd38a29.eln(F6e6f746d7563682d73686f772d636f6d6d616e642d686f6f6b_notmuch_show_command_hook_0+0x71)[0x7f6e2f742971]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5895f8]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588981]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x50a9c1]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588c6d]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x50e318]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x51b00b]
/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5885cf]
...
Segmentation fault (core dumped)

Does this help?

Thanks in advance.



In GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw3d scroll bars)
System Description: NixOS 23.05 (Stoat)

Configured using:
 'configure
 --prefix=/nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2
 --disable-build-details --with-modules --with-x-toolkit=lucid
 --with-xft --with-cairo --with-native-compilation'

Configured features:
CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG JSON
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS
X11 XAW3D XDBE XIM XPM LUCID ZLIB

Important settings:
  value of $EMACSLOADPATH: 
  value of $EMACSNATIVELOADPATH: /nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/native-lisp::
  value of $LANG: en_GB.UTF-8
  value of $XMODIFIERS: @im=fcitx
  locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
  eev-mode: t
  global-git-commit-mode: t
  magit-auto-revert-mode: t
  shell-dirtrack-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
~/git/emacs-unoffice/junk hides ~/git/emacs-pdf/junk
~/git/emacs-unoffice/junk hides ~/git/emacs-framebuffer/junk
/run/current-system/sw/share/emacs/site-lisp/site-start hides /nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/site-lisp/site-start
/run/current-system/sw/share/emacs/site-lisp/site-start hides /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/share/emacs/site-lisp/site-start
/nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/site-lisp/elpa/transient-20230602.2121/transient hides /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/share/emacs/28.2/lisp/transient
/nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/site-lisp/elpa/let-alist-1.0.6/let-alist hides /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/share/emacs/28.2/lisp/emacs-lisp/let-alist

Features:
(shadow emacsbug find-dired dired-aux dictcc org-element avl-tree ol-eww
ol-rmail ol-mhe ol-irc ol-info ol-gnus nnselect gnus-search eieio-opt
speedbar ezimage dframe gnus-art mm-uu mml2015 gnus-sum gnus-group
gnus-undo gnus-start gnus-dbus dbus gnus-cloud nnimap nnmail mail-source
utf7 netrc nnoo gnus-spec gnus-int gnus-range gnus-win ol-docview
doc-view jka-compr image-mode exif ol-bibtex ol-bbdb ol-w3m ol-doi
org-link-doi mule-util rfc2104 tramp-cmds tramp-cache tramp-sh tramp
tramp-loaddefs trampver tramp-integration files-x tramp-compat
parse-time ls-lisp mailalias sendmail feedmail qp sort mail-extr
misearch multi-isearch gnutls network-stream url-http url-gw nsm
url-cache url-auth term/xterm xterm elm-mode elm-interactive
elm-font-lock elm-indent-simple elm-indent elm-imenu elm-format
reformatter elm-tags elm-util pulse color let-alist f f-shortdoc
shortdoc elm-defuns bmenu watch term2 shell2 vc-git vc-dispatcher
emacs-btap ffap emacs-unoffice view org ob ob-tangle ob-ref ob-lob
ob-table ob-exp org-macro org-footnote org-src ob-comint org-pcomplete
org-list org-faces org-entities org-version ob-emacs-lisp ob-core
ob-eval org-table oc-basic bibtex iso8601 ol org-keys oc org-compat
org-macs org-loaddefs find-func emacs-pdf printing ps-print
ps-print-loaddefs ps-def lpr emacs-framebuffer eev-beginner eev-load
eev-rcirc eev-videolinks eev-audiovideo eev-wconfig eev-rstdoc
eev-helpful eev-kla eev-testblocks eev-edit eev-pdflike eejump eev-brxxx
eev-code eev-hlinks eev-tlinks eev-wrap eev-env eev-elinks eev-plinks
eev-blinks eev-template0 eev-anchors eev-codings eepitch disp-table
eev-mode eev-eval eev-multiwindow eev-flash eev-intro dumb-jump popup s
email-eww cltl clhs notmuch notmuch-tree notmuch-jump notmuch-hello
notmuch-show notmuch-print notmuch-crypto notmuch-mua notmuch-message
notmuch-draft notmuch-maildir-fcc notmuch-address notmuch-company
notmuch-parser notmuch-wash coolj goto-addr icalendar diary-lib
diary-loaddefs cal-menu calendar cal-loaddefs notmuch-tag notmuch-lib
notmuch-compat hl-line mm-view mml-smime smime dig eww-lnum eww xdg
url-queue shr kinsoku svg xml dom mm-url gnus nnheader wid-edit
magit-submodule magit-blame magit-stash magit-reflog magit-bisect
magit-push magit-pull magit-fetch magit-clone magit-remote magit-commit
magit-sequence magit-notes magit-worktree magit-tag magit-merge
magit-branch magit-reset magit-files magit-refs magit-status magit
magit-repos magit-apply magit-wip magit-log which-func imenu magit-diff
smerge-mode diff git-commit log-edit message rmc puny dired
dired-loaddefs rfc822 mml mml-sec epa derived epg rfc6068 epg-config
gnus-util rmail rmail-loaddefs 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 magit-core
magit-autorevert autorevert filenotify magit-margin magit-transient
magit-process with-editor comp comp-cstr warnings rx shell pcomplete
server magit-mode transient cl-extra help-mode magit-git magit-base
magit-section format-spec cursor-sensor crm dash compat compat-29
diff-mode paredit slime-asdf grep slime-fancy slime-indentation
slime-cl-indent cl-indent slime-trace-dialog slime-fontifying-fu
slime-package-fu slime-references slime-compiler-notes-tree advice
slime-scratch slime-presentations bridge slime-macrostep macrostep
slime-mdot-fu slime-enclosing-context slime-fancy-trace
slime-fancy-inspector slime-fuzzy slime-c-p-c slime-autodoc
slime-editing-commands slime-repl slime-parse slime apropos compile
text-property-search etags fileloop generator xref project arc-mode
archive-mode noutline outline pp comint ansi-color ring hyperspec
thingatpt picolisp tsm easy-mmode edmacro kmacro pcase slime-autoloads
info package browse-url url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util mailcap url-handlers
url-parse auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json subr-x map url-vars seq byte-opt gv bytecomp
byte-compile cconv cl-loaddefs cl-lib iso-transl tooltip eldoc paren
electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/x-win x-win term/common-win x-dnd 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 cl-generic 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 simple abbrev obarray cl-preloaded nadvice
button loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote threads dbusbind inotify
dynamic-setting system-font-setting font-render-setting cairo x-toolkit
x multi-tty make-network-process native-compile emacs)

Memory information:
((conses 16 762649 88295)
 (symbols 48 38472 4)
 (strings 32 167813 17195)
 (string-bytes 1 6590820)
 (vectors 16 79801)
 (vector-slots 8 2074030 115067)
 (floats 8 835 381)
 (intervals 56 28595 5312)
 (buffers 992 34))

bug#66127: 28.2; emacs crash after single C-g

[Eli Zaretskii]

> From: tom@logand.com
> Date: Wed, 20 Sep 2023 21:59:45 +0200
> 
> 
> Sorry I do not have a minimal test case.
> 
> Since a long time ago, single C-g crashes emacs for me so when there is
> something long running blocking emacs, it is not possible to reliably
> interrupt it.
> 
> I observe this behaviour often when using the notmuch email client and
> trying to display a long thread.  When notmuch block emacs for ages and
> I press single C-g, sometimes I get the following crash:
> 
> Fatal error 11: Segmentation fault
> Backtrace:
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5251c8]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x41f4e6]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x41f9e8]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x523398]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x52341c]
> /nix/store/46m4xx889wlhsdj72j38fnlyyvvvvbyb-glibc-2.37-8/lib/libc.so.6(+0x38d60)[0x7f6e33852d60]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5efcba]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5eff11]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/../lib/emacs/28.2/native-lisp/28.2-d1746297/preloaded/jit-lock-8a988e43-703cd7fb.eln(F6a69742d6c6f636b2d666f6e746966792d6e6f77_jit_lock_fontify_now_0+0x2d2)[0x7f6e316b0172]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/../lib/emacs/28.2/native-lisp/28.2-d1746297/preloaded/jit-lock-8a988e43-703cd7fb.eln(F6a69742d6c6f636b2d66756e6374696f6e_jit_lock_function_0+0x232)[0x7f6e316afaf2]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588981]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x43e5f4]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x44d95c]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x44daf8]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x452fd6]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x458788]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4566b5]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x458ae0]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x45ac77]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x455876]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x47c514]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4814ab]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x58865c]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x441149]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x441105]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x46b751]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x46d705]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4289ee]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
> /nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/native-lisp/28.2-d1746297/notmuch-show-482175f2-4dd38a29.eln(F6e6f746d7563682d73686f772d636f6d6d616e642d686f6f6b_notmuch_show_command_hook_0+0x71)[0x7f6e2f742971]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5895f8]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588981]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x50a9c1]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588c6d]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x50e318]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x51b00b]
> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5885cf]
> ...
> Segmentation fault (core dumped)
> 
> Does this help?

Only a little.  Those addresses in the backtrace can only be
interpreted on your system.  The node "Crashing" in the Emacs user
manual explains how to convert them to human-readable list of files,
functions, and line numbers, so please do that and post the results.
For even better results, run Emacs under GDB, and when it crashes,
type at the GDB prompt:

  (gdb) thread apply all bt

and post the results.

All of the above assumes your Emacs was not stripped of debug info; if
it was, there's no way of getting symbolic backtraces, and I would
recommend to download the symbols or rebuild Emacs without stripping,
before doing any of the above.

> In GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw3d scroll bars)
> System Description: NixOS 23.05 (Stoat)

Any chance you could try Emacs 29.1 or the HEAD of the current
emacs-29 branch of the Emacs Git repository?  We will not be making
any more releases from the Emacs 28 branch, and it is possible that
the bug you are experiencing was already solved.

Thanks.

bug#66127: 28.2; emacs crash after single C-g

[Stefan Kangas]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: tom@logand.com
>> Date: Wed, 20 Sep 2023 21:59:45 +0200
>>
>>
>> Sorry I do not have a minimal test case.
>>
>> Since a long time ago, single C-g crashes emacs for me so when there is
>> something long running blocking emacs, it is not possible to reliably
>> interrupt it.
>>
>> I observe this behaviour often when using the notmuch email client and
>> trying to display a long thread.  When notmuch block emacs for ages and
>> I press single C-g, sometimes I get the following crash:
>>
>> Fatal error 11: Segmentation fault
>> Backtrace:
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5251c8]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x41f4e6]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x41f9e8]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x523398]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x52341c]
>> /nix/store/46m4xx889wlhsdj72j38fnlyyvvvvbyb-glibc-2.37-8/lib/libc.so.6(+0x38d60)[0x7f6e33852d60]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5efcba]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5eff11]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/../lib/emacs/28.2/native-lisp/28.2-d1746297/preloaded/jit-lock-8a988e43-703cd7fb.eln(F6a69742d6c6f636b2d666f6e746966792d6e6f77_jit_lock_fontify_now_0+0x2d2)[0x7f6e316b0172]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/../lib/emacs/28.2/native-lisp/28.2-d1746297/preloaded/jit-lock-8a988e43-703cd7fb.eln(F6a69742d6c6f636b2d66756e6374696f6e_jit_lock_function_0+0x232)[0x7f6e316afaf2]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588981]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x43e5f4]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x44d95c]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x44daf8]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x452fd6]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x458788]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4566b5]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x458ae0]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x45ac77]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x455876]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x47c514]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4814ab]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x58865c]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x441149]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x441105]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x46b751]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x46d705]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x4289ee]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
>> /nix/store/bvkjcb6pzd3d51q9j7yhf3bhljxlvb95-emacs-packages-deps/share/emacs/native-lisp/28.2-d1746297/notmuch-show-482175f2-4dd38a29.eln(F6e6f746d7563682d73686f772d636f6d6d616e642d686f6f6b_notmuch_show_command_hook_0+0x71)[0x7f6e2f742971]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5894c3]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5895f8]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588981]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x50a9c1]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x588c6d]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x50e318]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x51b00b]
>> /nix/store/5vx99s8cjzv8hcirly8g06alhjz0zaba-emacs-28.2/bin/emacs[0x5885cf]
>> ...
>> Segmentation fault (core dumped)
>>
>> Does this help?
>
> Only a little.  Those addresses in the backtrace can only be
> interpreted on your system.  The node "Crashing" in the Emacs user
> manual explains how to convert them to human-readable list of files,
> functions, and line numbers, so please do that and post the results.
> For even better results, run Emacs under GDB, and when it crashes,
> type at the GDB prompt:
>
>   (gdb) thread apply all bt
>
> and post the results.
>
> All of the above assumes your Emacs was not stripped of debug info; if
> it was, there's no way of getting symbolic backtraces, and I would
> recommend to download the symbols or rebuild Emacs without stripping,
> before doing any of the above.
>
>> In GNU Emacs 28.2 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw3d scroll bars)
>> System Description: NixOS 23.05 (Stoat)
>
> Any chance you could try Emacs 29.1 or the HEAD of the current
> emacs-29 branch of the Emacs Git repository?  We will not be making
> any more releases from the Emacs 28 branch, and it is possible that
> the bug you are experiencing was already solved.
>
> Thanks.

More information was requested, but none was given within 3 months, so
I'm closing this bug.  If this is still an issue, please reply to this
email (use "Reply to all" in your email client) and we can reopen the
bug report.