* bug#74902: 31.0.50; Segfault when deleting frames
@ 2024-12-15 22:01 Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-12-16 15:50 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2024-12-15 22:01 UTC (permalink / raw)
To: 74902
I use EXWM and, Emacs very occasionally seems to crash when closing
floating windows. Specifically, it crashes when deleting the frame
wrapping the floating window. Unfortunately, I don't have a great way to
reproduce it with a minimal setup or to reproduce it reliably enough to
grab a trace with GDB.
As far as I can tell, this is because `delete-frame' calls `delq' (from
C) which then handles a signal (not sure what signal) via the
`FOR_EACH_TAIL' macro while deleting the frame. Unfortunately, that
eventually calls `gobble_input' which operates on frames.
Backtrace:
/usr/bin/emacs(emacs_backtrace+0x4e) [0x61e77935447e]
/usr/bin/emacs(terminate_due_to_signal+0xaf) [0x61e7791a4c5d]
/usr/bin/emacs(+0x5e062) [0x61e7791a6062]
/usr/lib/libc.so.6(+0x42150) [0x7e3a544dc150]
/usr/bin/emacs(+0xeff78) [0x61e779237f78]
/usr/bin/emacs(+0x19a564) [0x61e7792e2564]
/usr/bin/emacs(+0x19a829) [0x61e7792e2829]
/usr/bin/emacs(+0x1a1c58) [0x61e7792e9c58]
/usr/bin/emacs(+0x1b0bb8) [0x61e7792f8bb8]
/usr/bin/emacs(gobble_input+0x272) [0x61e77933f3a2]
/usr/bin/emacs(probably_quit+0xc6) [0x61e7793ec666]
/usr/bin/emacs(Fdelq+0xb6) [0x61e77940c196]
/usr/bin/emacs(delete_frame+0x2d4) [0x61e7791d77b4]
/usr/bin/emacs(Fdelete_frame+0x17) [0x61e7791d8a07]
/usr/bin/../lib/emacs/31.0.50/native-lisp/31.0.50-9789f41c/preloaded/window-0d1b8b93-5fc421c3.eln(F77696e646f772d2d64656c657465_window__delete_0+0xf6) [0x7e3a500879e6]
/usr/bin/emacs(Ffuncall+0x107) [0x61e7793fb617]
/usr/bin/../lib/emacs/31.0.50/native-lisp/31.0.50-9789f41c/preloaded/window-0d1b8b93-5fc421c3.eln(F7265706c6163652d6275666665722d696e2d77696e646f7773_replace_buffer_in_windows_0+0x2fb) [0x7e3a5008893b]
/usr/bin/emacs(Ffuncall+0x107) [0x61e7793fb617]
/usr/bin/emacs(Fkill_buffer+0x179) [0x61e779367229]
/home/steb/.config/emacs/eln-cache/31.0.50-9789f41c/exwm-manage-481a2a54-f343330e.eln(F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_20+0x72) [0x7e3a48615462]
/usr/bin/emacs(Ffuncall+0x107) [0x61e7793fb617]
/usr/bin/emacs(Fapply+0x464) [0x61e7793ec0f4]
/usr/bin/emacs(Ffuncall+0x107) [0x61e7793fb617]
/usr/bin/../lib/emacs/31.0.50/native-lisp/31.0.50-9789f41c/preloaded/timer-3ee7cfd9-4017b895.eln(F74696d65722d6576656e742d68616e646c6572_timer_event_handler_0+0x408) [0x7e3a4fa48468]
/usr/bin/emacs(Ffuncall+0x107) [0x61e7793fb617]
/usr/bin/emacs(timer_check+0x4de) [0x61e779331bce]
/usr/bin/emacs(+0x3d325b) [0x61e77951b25b]
/usr/bin/emacs(read_char+0x1c8f) [0x61e779339e0f]
/usr/bin/emacs(+0x3c4c9e) [0x61e77950cc9e]
/usr/bin/emacs(+0x1e60e3) [0x61e77932e0e3]
/usr/bin/emacs(internal_condition_case+0x77) [0x61e7793eb237]
/usr/bin/emacs(command_loop_2+0x2f) [0x61e77932d45f]
/usr/bin/emacs(internal_catch+0x46) [0x61e7793eb176]
/usr/bin/emacs(+0x1e58cb) [0x61e77932d8cb]
/usr/bin/emacs(recursive_edit_1+0xf6) [0x61e77932da86]
/usr/bin/emacs(Frecursive_edit+0x110) [0x61e77932dd30]
/usr/bin/emacs(main+0x298b) [0x61e7791b9ecb]
/usr/lib/libc.so.6(+0x2618e) [0x7e3a544c018e]
/usr/lib/libc.so.6(__libc_start_main+0x8a) [0x7e3a544c024a]
/usr/bin/emacs(_start+0x25) [0x61e7791ba695]
In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, cairo version
1.18.2) of 2024-12-07 built on Laptop
Repository revision: 6f6b641975e4828f96913b29b1476c6323c952d8
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101014
System Description: Arch Linux
Configured using:
'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
--localstatedir=/var --mandir=/usr/share/man --with-gameuser=:games
--with-modules --without-m17n-flt --without-selinux --without-pop
--without-gconf --disable-gc-mark-trace --enable-link-time-optimization
--with-native-compilation=yes --with-xinput2 --with-x-toolkit=no
--without-toolkit-scroll-bars --without-xft --without-xaw3d
--without-gsettings --with-cairo-xcb --with-sound=no --with-tree-sitter
--without-gpm --without-compress-install
'--program-transform-name=s/\([ec]tags\)/\1.emacs/'
'CFLAGS=-march=native -mtune=native -O3 -pipe -fno-plt -fexceptions
-Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security
-fstack-clash-protection -fcf-protection -fomit-frame-pointer
-fno-math-errno -fno-trapping-math -fno-math-errno -fno-trapping-math
-flto=auto' 'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed
-Wl,-z,relro -Wl,-z,now -Wl,-z,pack-relative-relocs -flto=auto''
Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS HARFBUZZ JPEG LCMS2 LIBOTF
LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY OLDXMENU PDUMPER
PNG RSVG SECCOMP SQLITE3 THREADS TIFF TREE_SITTER WEBP X11 XDBE XIM
XINPUT2 XPM ZLIB
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: journalctl
Minor modes in effect:
notmuch-bookmarks-mode: t
windmove-mode: t
global-atomic-chrome-edit-mode: t
iwd-agent-mode: t
i3bar-mode: t
ednc-mode: t
exwm-xsettings-mode: t
exwm-background-mode: t
exwm-systemtray-mode: t
exwm-randr-mode: t
auto-compile-on-load-mode: t
auto-compile-on-save-mode: t
save-place-mode: t
savehist-mode: t
openwith-mode: t
org-super-agenda-mode: t
global-org-modern-mode: t
eat-eshell-mode: t
magit-todos-mode: t
global-git-commit-mode: t
magit-auto-revert-mode: t
server-mode: t
recentf-mode: t
global-treesit-auto-mode: t
editorconfig-mode: t
yas-global-mode: t
yas-minor-mode: t
async-bytecomp-package-mode: t
sudo-edit-indicator-mode: t
global-auto-revert-mode: t
vertico-mode: t
corfu-popupinfo-mode: t
global-corfu-mode: t
corfu-mode: t
minibuffer-depth-indicate-mode: t
minibuffer-electric-default-mode: t
isearch-mb-mode: t
pixel-scroll-precision-mode: t
global-hl-todo-mode: t
all-the-icons-completion-mode: t
marginalia-mode: t
visual-replace-global-mode: t
global-jinx-mode: t
evil-goggles-mode: t
global-evil-surround-mode: t
evil-surround-mode: t
global-evil-collection-unimpaired-mode: t
evil-collection-unimpaired-mode: t
evil-mode: t
evil-local-mode: t
desktop-environment-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tab-bar-history-mode: t
tab-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
window-divider-mode: t
minibuffer-regexp-mode: t
column-number-mode: t
line-number-mode: t
visual-line-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
/home/steb/.cache/emacs/elpa/filechooser-0.2.1/filechooser hides /usr/share/emacs/site-lisp/filechooser
/home/steb/.cache/emacs/elpa/filechooser-0.2.1/filechooser-autoloads hides /usr/share/emacs/site-lisp/filechooser-autoloads
/home/steb/.cache/emacs/elpa/protobuf-mode-20240823.1417/protobuf-mode hides /usr/share/emacs/site-lisp/protobuf-mode
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch hides /usr/share/emacs/site-lisp/notmuch
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-wash hides /usr/share/emacs/site-lisp/notmuch-wash
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-tree hides /usr/share/emacs/site-lisp/notmuch-tree
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-tag hides /usr/share/emacs/site-lisp/notmuch-tag
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-show hides /usr/share/emacs/site-lisp/notmuch-show
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-query hides /usr/share/emacs/site-lisp/notmuch-query
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-print hides /usr/share/emacs/site-lisp/notmuch-print
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-parser hides /usr/share/emacs/site-lisp/notmuch-parser
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-mua hides /usr/share/emacs/site-lisp/notmuch-mua
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-message hides /usr/share/emacs/site-lisp/notmuch-message
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-maildir-fcc hides /usr/share/emacs/site-lisp/notmuch-maildir-fcc
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-lib hides /usr/share/emacs/site-lisp/notmuch-lib
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-jump hides /usr/share/emacs/site-lisp/notmuch-jump
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-hello hides /usr/share/emacs/site-lisp/notmuch-hello
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-draft hides /usr/share/emacs/site-lisp/notmuch-draft
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-crypto hides /usr/share/emacs/site-lisp/notmuch-crypto
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-compat hides /usr/share/emacs/site-lisp/notmuch-compat
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-company hides /usr/share/emacs/site-lisp/notmuch-company
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/notmuch-address hides /usr/share/emacs/site-lisp/notmuch-address
/home/steb/.cache/emacs/elpa/notmuch-20240816.2039/coolj hides /usr/share/emacs/site-lisp/coolj
/home/steb/.cache/emacs/elpa/modus-themes-4.6.0/theme-loaddefs hides /usr/share/emacs/31.0.50/lisp/theme-loaddefs
Features:
(shadow sort mail-extr emacsbug mule-util tramp-cmds cc-mode cc-fonts
cc-guess cc-menus cc-cmds consult-xref evil-collection-eglot eglot
external-completion jsonrpc evil-collection-ert ert ewoc
evil-collection-debug debug backtrace rainbow-delimiters vc
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bindat let-alist iwd i3bar ednc filechooser dbus exwm-xsettings
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eieio-core cl-macs password-cache json subr-x map byte-opt gv bytecomp
byte-compile url-vars cus-edit pp cus-load icons wid-edit 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 dbusbind inotify lcms2 dynamic-setting font-render-setting cairo
xinput2 x multi-tty move-toolbar make-network-process native-compile
emacs)
Memory information:
((conses 16 1395639 980414) (symbols 48 71688 3) (strings 32 377983 67952) (string-bytes 1 11865296)
(vectors 16 132134) (vector-slots 8 1522623 421201) (floats 8 742 4321) (intervals 56 43580 33010)
(buffers 992 35))
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#74902: 31.0.50; Segfault when deleting frames
2024-12-15 22:01 bug#74902: 31.0.50; Segfault when deleting frames Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2024-12-16 15:50 ` Eli Zaretskii
2024-12-16 16:12 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
0 siblings, 1 reply; 7+ messages in thread
From: Eli Zaretskii @ 2024-12-16 15:50 UTC (permalink / raw)
To: Steven Allen; +Cc: 74902
> Date: Sun, 15 Dec 2024 14:01:17 -0800
> From: Steven Allen via "Bug reports for GNU Emacs,
> the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>
>
> I use EXWM and, Emacs very occasionally seems to crash when closing
> floating windows. Specifically, it crashes when deleting the frame
> wrapping the floating window. Unfortunately, I don't have a great way to
> reproduce it with a minimal setup or to reproduce it reliably enough to
> grab a trace with GDB.
>
> As far as I can tell, this is because `delete-frame' calls `delq' (from
> C) which then handles a signal (not sure what signal) via the
> `FOR_EACH_TAIL' macro while deleting the frame. Unfortunately, that
> eventually calls `gobble_input' which operates on frames.
>
>
> Backtrace:
>
> /usr/bin/emacs(emacs_backtrace+0x4e) [0x61e77935447e]
> /usr/bin/emacs(terminate_due_to_signal+0xaf) [0x61e7791a4c5d]
> /usr/bin/emacs(+0x5e062) [0x61e7791a6062]
> /usr/lib/libc.so.6(+0x42150) [0x7e3a544dc150]
> /usr/bin/emacs(+0xeff78) [0x61e779237f78]
> /usr/bin/emacs(+0x19a564) [0x61e7792e2564]
> /usr/bin/emacs(+0x19a829) [0x61e7792e2829]
> /usr/bin/emacs(+0x1a1c58) [0x61e7792e9c58]
> /usr/bin/emacs(+0x1b0bb8) [0x61e7792f8bb8]
> /usr/bin/emacs(gobble_input+0x272) [0x61e77933f3a2]
> /usr/bin/emacs(probably_quit+0xc6) [0x61e7793ec666]
> /usr/bin/emacs(Fdelq+0xb6) [0x61e77940c196]
> /usr/bin/emacs(delete_frame+0x2d4) [0x61e7791d77b4]
> /usr/bin/emacs(Fdelete_frame+0x17) [0x61e7791d8a07]
This is less useful than a backtrace could be. Can you run Emacs
under GDB, and when it crashes, type
(gdb) thread apply all bt
and post here everything GDB produces as result?
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#74902: 31.0.50; Segfault when deleting frames
2024-12-16 15:50 ` Eli Zaretskii
@ 2024-12-16 16:12 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-12-16 17:20 ` Robert Pluim
0 siblings, 1 reply; 7+ messages in thread
From: Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2024-12-16 16:12 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 74902
Eli Zaretskii <eliz@gnu.org> writes:
>> Date: Sun, 15 Dec 2024 14:01:17 -0800
>> From: Steven Allen via "Bug reports for GNU Emacs,
>> the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>>
>>
>> I use EXWM and, Emacs very occasionally seems to crash when closing
>> floating windows. Specifically, it crashes when deleting the frame
>> wrapping the floating window. Unfortunately, I don't have a great way to
>> reproduce it with a minimal setup or to reproduce it reliably enough to
>> grab a trace with GDB.
>>
>> As far as I can tell, this is because `delete-frame' calls `delq' (from
>> C) which then handles a signal (not sure what signal) via the
>> `FOR_EACH_TAIL' macro while deleting the frame. Unfortunately, that
>> eventually calls `gobble_input' which operates on frames.
>>
>>
>> Backtrace:
>>
>> /usr/bin/emacs(emacs_backtrace+0x4e) [0x61e77935447e]
>> /usr/bin/emacs(terminate_due_to_signal+0xaf) [0x61e7791a4c5d]
>> /usr/bin/emacs(+0x5e062) [0x61e7791a6062]
>> /usr/lib/libc.so.6(+0x42150) [0x7e3a544dc150]
>> /usr/bin/emacs(+0xeff78) [0x61e779237f78]
>> /usr/bin/emacs(+0x19a564) [0x61e7792e2564]
>> /usr/bin/emacs(+0x19a829) [0x61e7792e2829]
>> /usr/bin/emacs(+0x1a1c58) [0x61e7792e9c58]
>> /usr/bin/emacs(+0x1b0bb8) [0x61e7792f8bb8]
>> /usr/bin/emacs(gobble_input+0x272) [0x61e77933f3a2]
>> /usr/bin/emacs(probably_quit+0xc6) [0x61e7793ec666]
>> /usr/bin/emacs(Fdelq+0xb6) [0x61e77940c196]
>> /usr/bin/emacs(delete_frame+0x2d4) [0x61e7791d77b4]
>> /usr/bin/emacs(Fdelete_frame+0x17) [0x61e7791d8a07]
>
> This is less useful than a backtrace could be. Can you run Emacs
> under GDB, and when it crashes, type
>
> (gdb) thread apply all bt
>
> and post here everything GDB produces as result?
Yeah, I agree. I'll do that if I can find a reliable way to reproduce
it. At the moment it happens once every few months.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#74902: 31.0.50; Segfault when deleting frames
2024-12-16 16:12 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2024-12-16 17:20 ` Robert Pluim
2024-12-28 11:35 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Robert Pluim @ 2024-12-16 17:20 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: Steven Allen, 74902
>>>>> On Mon, 16 Dec 2024 08:12:46 -0800, Steven Allen via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org> said:
Steven> Eli Zaretskii <eliz@gnu.org> writes:
>>> As far as I can tell, this is because `delete-frame' calls `delq' (from
>>> C) which then handles a signal (not sure what signal) via the
>>> `FOR_EACH_TAIL' macro while deleting the frame. Unfortunately, that
>>> eventually calls `gobble_input' which operates on frames.
>>>
>>>
>>> Backtrace:
>>>
>>> /usr/bin/emacs(emacs_backtrace+0x4e) [0x61e77935447e]
>>> /usr/bin/emacs(terminate_due_to_signal+0xaf) [0x61e7791a4c5d]
>>> /usr/bin/emacs(+0x5e062) [0x61e7791a6062]
>>> /usr/lib/libc.so.6(+0x42150) [0x7e3a544dc150]
>>> /usr/bin/emacs(+0xeff78) [0x61e779237f78]
>>> /usr/bin/emacs(+0x19a564) [0x61e7792e2564]
>>> /usr/bin/emacs(+0x19a829) [0x61e7792e2829]
>>> /usr/bin/emacs(+0x1a1c58) [0x61e7792e9c58]
>>> /usr/bin/emacs(+0x1b0bb8) [0x61e7792f8bb8]
>>> /usr/bin/emacs(gobble_input+0x272) [0x61e77933f3a2]
>>> /usr/bin/emacs(probably_quit+0xc6) [0x61e7793ec666]
>>> /usr/bin/emacs(Fdelq+0xb6) [0x61e77940c196]
>>> /usr/bin/emacs(delete_frame+0x2d4) [0x61e7791d77b4]
>>> /usr/bin/emacs(Fdelete_frame+0x17) [0x61e7791d8a07]
>>
>> This is less useful than a backtrace could be. Can you run Emacs
>> under GDB, and when it crashes, type
>>
>> (gdb) thread apply all bt
>>
>> and post here everything GDB produces as result?
Steven> Yeah, I agree. I'll do that if I can find a reliable way to reproduce
Steven> it. At the moment it happens once every few months.
If you do find a reproducer, then based on the trace above I think the
following should fix it:
diff --git a/src/frame.c b/src/frame.c
index f6053fca3ef..ff9e1d24ea1 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -2281,7 +2281,9 @@ delete_frame (Lisp_Object frame, Lisp_Object force)
delete_all_child_windows (f->root_window);
fset_root_window (f, Qnil);
+ block_input();
Vframe_list = Fdelq (frame, Vframe_list);
+ unblock_input();
SET_FRAME_VISIBLE (f, 0);
/* Allow the vector of menu bar contents to be freed in the next
Robert
--
^ permalink raw reply related [flat|nested] 7+ messages in thread
* bug#74902: 31.0.50; Segfault when deleting frames
2024-12-16 17:20 ` Robert Pluim
@ 2024-12-28 11:35 ` Eli Zaretskii
2024-12-28 23:23 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
0 siblings, 1 reply; 7+ messages in thread
From: Eli Zaretskii @ 2024-12-28 11:35 UTC (permalink / raw)
To: Robert Pluim; +Cc: steven, 74902
> From: Robert Pluim <rpluim@gmail.com>
> Cc: Steven Allen <steven@stebalien.com>, 74902@debbugs.gnu.org
> Date: Mon, 16 Dec 2024 18:20:34 +0100
>
> >>>>> On Mon, 16 Dec 2024 08:12:46 -0800, Steven Allen via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org> said:
>
> Steven> Eli Zaretskii <eliz@gnu.org> writes:
> >>> As far as I can tell, this is because `delete-frame' calls `delq' (from
> >>> C) which then handles a signal (not sure what signal) via the
> >>> `FOR_EACH_TAIL' macro while deleting the frame. Unfortunately, that
> >>> eventually calls `gobble_input' which operates on frames.
> >>>
> >>>
> >>> Backtrace:
> >>>
> >>> /usr/bin/emacs(emacs_backtrace+0x4e) [0x61e77935447e]
> >>> /usr/bin/emacs(terminate_due_to_signal+0xaf) [0x61e7791a4c5d]
> >>> /usr/bin/emacs(+0x5e062) [0x61e7791a6062]
> >>> /usr/lib/libc.so.6(+0x42150) [0x7e3a544dc150]
> >>> /usr/bin/emacs(+0xeff78) [0x61e779237f78]
> >>> /usr/bin/emacs(+0x19a564) [0x61e7792e2564]
> >>> /usr/bin/emacs(+0x19a829) [0x61e7792e2829]
> >>> /usr/bin/emacs(+0x1a1c58) [0x61e7792e9c58]
> >>> /usr/bin/emacs(+0x1b0bb8) [0x61e7792f8bb8]
> >>> /usr/bin/emacs(gobble_input+0x272) [0x61e77933f3a2]
> >>> /usr/bin/emacs(probably_quit+0xc6) [0x61e7793ec666]
> >>> /usr/bin/emacs(Fdelq+0xb6) [0x61e77940c196]
> >>> /usr/bin/emacs(delete_frame+0x2d4) [0x61e7791d77b4]
> >>> /usr/bin/emacs(Fdelete_frame+0x17) [0x61e7791d8a07]
> >>
> >> This is less useful than a backtrace could be. Can you run Emacs
> >> under GDB, and when it crashes, type
> >>
> >> (gdb) thread apply all bt
> >>
> >> and post here everything GDB produces as result?
>
> Steven> Yeah, I agree. I'll do that if I can find a reliable way to reproduce
> Steven> it. At the moment it happens once every few months.
>
> If you do find a reproducer, then based on the trace above I think the
> following should fix it:
>
> diff --git a/src/frame.c b/src/frame.c
> index f6053fca3ef..ff9e1d24ea1 100644
> --- a/src/frame.c
> +++ b/src/frame.c
> @@ -2281,7 +2281,9 @@ delete_frame (Lisp_Object frame, Lisp_Object force)
> delete_all_child_windows (f->root_window);
> fset_root_window (f, Qnil);
>
> + block_input();
> Vframe_list = Fdelq (frame, Vframe_list);
> + unblock_input();
> SET_FRAME_VISIBLE (f, 0);
>
> /* Allow the vector of menu bar contents to be freed in the next
Robert, I think you should install this on the master branch.
Thanks.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#74902: 31.0.50; Segfault when deleting frames
2024-12-28 11:35 ` Eli Zaretskii
@ 2024-12-28 23:23 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-12-29 6:50 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2024-12-28 23:23 UTC (permalink / raw)
To: Eli Zaretskii, Robert Pluim; +Cc: 74902
[-- Attachment #1: Type: text/plain, Size: 102 bytes --]
I was able to get a GDB backtrace after some button mashing. Let me know
if you need anything else.
[-- Attachment #2: GDB Backtrace --]
[-- Type: text/plain, Size: 5052 bytes --]
#0 format_mode_line_unwind_data (target_frame=target_frame@entry=0x58a7d5394680, obuf=<optimized out>, owin=<optimized out>, save_proptrans=save_proptrans@entry=false) at ../../src/xdisp.c:13716
#1 0x000058a7c8feb3c6 in gui_consider_frame_title (frame=XIL(0x58a7d5394685)) at ../../src/xdisp.c:13910
#2 0x000058a7c90d6b89 in SET_FRAME_ICONIFIED (f=0x58a7d5394680, i=1) at ../../src/frame.h:1468
#3 handle_one_xevent (dpyinfo=<optimized out>, event=<optimized out>, finish=0x7ffe4f3c8c3c, hold_quit=<optimized out>) at ../../src/xterm.c:20090
#4 0x000058a7c90e40b8 in XTread_socket (terminal=<optimized out>, hold_quit=0x7ffe4f3c8d60) at ../../src/xterm.c:25738
#5 0x000058a7c912a962 in gobble_input () at ../../src/keyboard.c:7922
#6 0x000058a7c91d7da6 in handle_async_input () at ../../src/keyboard.c:8161
#7 process_pending_signals () at ../../src/keyboard.c:8175
#8 probably_quit () at ../../src/eval.c:1788
#9 0x000058a7c91f7826 in maybe_quit () at ../../src/lisp.h:3956
#10 Fdelq (elt=XIL(0x58a7d5394685), list=<optimized out>) at ../../src/fns.c:2098
#11 0x000058a7c8fbd444 in delete_frame (frame=XIL(0x58a7d5394685), force=XIL(0)) at ../../src/frame.c:2500
#12 0x000058a7c8fbe6c7 in Fdelete_frame (frame=<optimized out>, force=<optimized out>) at ../../src/frame.c:2743
#13 0x000071768fefb9e6 in F77696e646f772d2d64656c657465_window__delete_0 () from /usr/bin/../lib/emacs/31.0.50/native-lisp/31.0.50-523952f2/preloaded/window-0d1b8b93-d9709ebc.eln
#14 0x000058a7c91e6d57 in Ffuncall (nargs=4, args=0x7ffe4f3c90f0) at ../../src/eval.c:3079
#15 0x000071768fefc93b in F7265706c6163652d6275666665722d696e2d77696e646f7773_replace_buffer_in_windows_0 () from /usr/bin/../lib/emacs/31.0.50/native-lisp/31.0.50-523952f2/preloaded/window-0d1b8b93-d9709ebc.eln
#16 0x000058a7c91e6d57 in Ffuncall (nargs=2, args=0x7ffe4f3c91b0) at ../../src/eval.c:3079
#17 0x000058a7c91528e9 in replace_buffer_in_windows (buffer=XIL(0x58a7d89b4565)) at ../../src/window.c:3647
#18 replace_buffer_in_windows (buffer=XIL(0x58a7d89b4565)) at ../../src/window.c:3642
#19 Fkill_buffer (buffer_or_name=<optimized out>) at ../../src/buffer.c:2012
#20 0x000071768b655462 in F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_20 () from /home/steb/.config/emacs/eln-cache/31.0.50-523952f2/exwm-manage-481a2a54-1f060da2.eln
#21 0x000058a7c91e6d57 in Ffuncall (nargs=2, args=0x7ffe4f3c9360) at ../../src/eval.c:3079
#22 0x000058a7c91d7834 in Fapply (nargs=2, args=0x7ffe4f3c9360) at ../../src/eval.c:2708
#23 0x000058a7c91e6d57 in Ffuncall (nargs=3, args=0x7ffe4f3c9358) at ../../src/eval.c:3079
#24 0x000071768e47b468 in F74696d65722d6576656e742d68616e646c6572_timer_event_handler_0 () from /usr/bin/../lib/emacs/31.0.50/native-lisp/31.0.50-523952f2/preloaded/timer-3ee7cfd9-4017b895.eln
#25 0x000058a7c91e6d57 in Ffuncall (nargs=2, args=0x7ffe4f3c94a0) at ../../src/eval.c:3079
#26 0x000058a7c911d1ce in timer_check_2 (timers=<optimized out>, idle_timers=<optimized out>) at ../../src/keyboard.c:4804
#27 timer_check () at ../../src/keyboard.c:4869
#28 0x000058a7c930661b in wait_reading_process_output.constprop.1 (time_limit=<optimized out>, nsecs=<optimized out>, read_kbd=-1, do_display=true, just_wait_proc=<optimized out>, wait_proc=<optimized out>, wait_for_cell=<optimized out>) at ../../src/process.c:5446
#29 0x000058a7c8fb60e0 in sit_for (timeout=<optimized out>, reading=<optimized out>, display_option=<optimized out>) at ../../src/dispnew.c:6889
#30 0x000058a7c9127880 in read_char (commandflag=1, map=XIL(0x58a7d5e4b153), prev_event=make_fixnum(27), used_mouse_menu=0x7ffe4f3ca0eb, end_time=0x0) at ../../src/keyboard.c:2925
#31 0x000058a7c92f837e in read_key_sequence.constprop.0 (keybuf=keybuf@entry=0x7ffe4f3ca270, prevent_redisplay=prevent_redisplay@entry=false, disable_text_conversion_p=<optimized out>, fix_current_buffer=<optimized out>, can_return_switch_frame=<optimized out>, dont_downcase_last=<optimized out>, prompt=<optimized out>) at ../../src/keyboard.c:10746
#32 0x000058a7c91196e3 in command_loop_1 () at ../../src/keyboard.c:1424
#33 0x000058a7c91d6977 in internal_condition_case (bfun=0x58a7c91194c0 <command_loop_1>, handlers=<optimized out>, hfun=0x58a7c91166e0 <cmd_error>) at ../../src/eval.c:1607
#34 0x000058a7c9118a5f in command_loop_2 (handlers=handlers@entry=XIL(0x90)) at ../../src/keyboard.c:1163
#35 0x000058a7c91d68b6 in internal_catch (tag=<optimized out>, func=0x58a7c9118a30 <command_loop_2>, arg=XIL(0x90)) at ../../src/eval.c:1286
#36 0x000058a7c9118ecb in command_loop () at ../../src/keyboard.c:1141
#37 0x000058a7c9119086 in recursive_edit_1 () at ../../src/keyboard.c:749
#38 0x000058a7c9119330 in Frecursive_edit () at ../../src/keyboard.c:832
#39 0x000058a7c8fa3f8b in main (argc=<optimized out>, argv=<optimized out>) at ../../src/emacs.c:2625
Lisp Backtrace:
"window--delete" (0x4f3c90f8)
"replace-buffer-in-windows" (0x4f3c91b8)
0xcf2129c0 PVEC_SUBR
"apply" (0x4f3c9360)
"timer-event-handler" (0x4f3c94a8)
Detaching from program: /usr/bin/emacs-31.0.50, process 53461
[Inferior 1 (process 53461) detached]
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#74902: 31.0.50; Segfault when deleting frames
2024-12-28 23:23 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2024-12-29 6:50 ` Eli Zaretskii
0 siblings, 0 replies; 7+ messages in thread
From: Eli Zaretskii @ 2024-12-29 6:50 UTC (permalink / raw)
To: Steven Allen; +Cc: rpluim, 74902
> From: Steven Allen <steven@stebalien.com>
> Cc: 74902@debbugs.gnu.org
> Date: Sat, 28 Dec 2024 15:23:12 -0800
>
> I was able to get a GDB backtrace after some button mashing. Let me know
> if you need anything else.
>
> #0 format_mode_line_unwind_data (target_frame=target_frame@entry=0x58a7d5394680, obuf=<optimized out>, owin=<optimized out>, save_proptrans=save_proptrans@entry=false) at ../../src/xdisp.c:13716
> #1 0x000058a7c8feb3c6 in gui_consider_frame_title (frame=XIL(0x58a7d5394685)) at ../../src/xdisp.c:13910
> #2 0x000058a7c90d6b89 in SET_FRAME_ICONIFIED (f=0x58a7d5394680, i=1) at ../../src/frame.h:1468
> #3 handle_one_xevent (dpyinfo=<optimized out>, event=<optimized out>, finish=0x7ffe4f3c8c3c, hold_quit=<optimized out>) at ../../src/xterm.c:20090
> #4 0x000058a7c90e40b8 in XTread_socket (terminal=<optimized out>, hold_quit=0x7ffe4f3c8d60) at ../../src/xterm.c:25738
> #5 0x000058a7c912a962 in gobble_input () at ../../src/keyboard.c:7922
> #6 0x000058a7c91d7da6 in handle_async_input () at ../../src/keyboard.c:8161
> #7 process_pending_signals () at ../../src/keyboard.c:8175
> #8 probably_quit () at ../../src/eval.c:1788
> #9 0x000058a7c91f7826 in maybe_quit () at ../../src/lisp.h:3956
> #10 Fdelq (elt=XIL(0x58a7d5394685), list=<optimized out>) at ../../src/fns.c:2098
> #11 0x000058a7c8fbd444 in delete_frame (frame=XIL(0x58a7d5394685), force=XIL(0)) at ../../src/frame.c:2500
Thanks. I guess we also need a FRAME_LIVE_P test in
gui_consider_frame_title?
^ permalink raw reply [flat|nested] 7+ messages in thread
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2024-12-15 22:01 bug#74902: 31.0.50; Segfault when deleting frames Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-12-16 15:50 ` Eli Zaretskii
2024-12-16 16:12 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-12-16 17:20 ` Robert Pluim
2024-12-28 11:35 ` Eli Zaretskii
2024-12-28 23:23 ` Steven Allen via Bug reports for GNU Emacs, the Swiss army knife of text editors
2024-12-29 6:50 ` Eli Zaretskii
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