Hi Emacs devel, I got a crash apparently during garbage collection. Unfortunately, I was running on a stripped binary and I was not doing anything in particular during the crash, so I would have no idea how to reproduce the crash. The only thing I am left with is a core dump, from which I can get the stack trace below. I doubt that this information is very useful, but do let me know if you think there is more information I can extract from the core. Thanks, George Stack trace: (gdb) bt #0 0x00000000005cd260 in process_mark_stack () #1 0x00000000005ce033 in mark_discard_killed_buffers () #2 0x00000000005cda4d in process_mark_stack () #3 0x00000000005cd80d in process_mark_stack () #4 0x00000000005ce29f in mark_localized_symbol () #5 0x00000000005ccf2e in process_mark_stack () #6 0x00000000005cd80d in process_mark_stack () #7 0x00000000005ce29f in mark_localized_symbol () #8 0x00000000005ccf2e in process_mark_stack () #9 0x00000000005ce29f in mark_localized_symbol () #10 0x00000000005ccf2e in process_mark_stack () #11 0x00000000005cda02 in process_mark_stack () #12 0x00000000005cda02 in process_mark_stack () #13 0x00000000005cda02 in process_mark_stack () #14 0x00000000005cd9e9 in process_mark_stack () #15 0x00000000005ce29f in mark_localized_symbol () #16 0x00000000005ccf2e in process_mark_stack () #17 0x00000000005ce29f in mark_localized_symbol () #18 0x00000000005ccf2e in process_mark_stack () #19 0x00000000005ce184 in mark_char_table () #20 0x00000000005ce22e in mark_char_table () #21 0x00000000005cd50e in process_mark_stack () #22 0x00000000005ce29f in mark_localized_symbol () #23 0x00000000005ccf2e in process_mark_stack () #24 0x00000000005ce29f in mark_localized_symbol () #25 0x00000000005ccf2e in process_mark_stack () #26 0x00000000005ce29f in mark_localized_symbol () #27 0x00000000005ccf2e in process_mark_stack () #28 0x00000000005ce184 in mark_char_table () #29 0x00000000005ce24e in mark_char_table () #30 0x00000000005cd50e in process_mark_stack () #31 0x000000000066b852 in traverse_intervals_noorder () #32 0x00000000005cd3fa in process_mark_stack () #33 0x00000000005ce29f in mark_localized_symbol () #34 0x00000000005ccf2e in process_mark_stack () #35 0x00000000005ce29f in mark_localized_symbol () #36 0x00000000005ccf2e in process_mark_stack () #37 0x00000000005ce29f in mark_localized_symbol () #38 0x00000000005ccf2e in process_mark_stack () #39 0x00000000005ce29f in mark_localized_symbol () #40 0x00000000005ccf2e in process_mark_stack () #41 0x00000000005ce29f in mark_localized_symbol () #42 0x00000000005ccf2e in process_mark_stack () #43 0x00000000005ce29f in mark_localized_symbol () #44 0x00000000005ccf2e in process_mark_stack () #45 0x00000000005ce29f in mark_localized_symbol () #46 0x00000000005ccf2e in process_mark_stack () #47 0x00000000005cd80d in process_mark_stack () #48 0x000000000066b852 in traverse_intervals_noorder () #49 0x00000000005cd3fa in process_mark_stack () #50 0x00000000005ce184 in mark_char_table () #51 0x00000000005ce24e in mark_char_table () #52 0x00000000005cd50e in process_mark_stack () #53 0x00000000005ce29f in mark_localized_symbol () #54 0x00000000005ccf2e in process_mark_stack () #55 0x00000000005ce29f in mark_localized_symbol () #56 0x00000000005ccf2e in process_mark_stack () #57 0x000000000066b820 in traverse_intervals_noorder () #58 0x00000000005cd3fa in process_mark_stack () #59 0x00000000005ce29f in mark_localized_symbol () #60 0x00000000005ccf2e in process_mark_stack () #61 0x00000000005cd80d in process_mark_stack () #62 0x00000000005cda02 in process_mark_stack () #63 0x00000000005cda02 in process_mark_stack () #64 0x00000000005ccf2e in process_mark_stack () #65 0x00000000005cd80d in process_mark_stack () #66 0x00000000005ce296 in mark_localized_symbol () #67 0x00000000005ccf2e in process_mark_stack () #68 0x00000000005ce29f in mark_localized_symbol () #69 0x00000000005ccf2e in process_mark_stack () #70 0x00000000005ce29f in mark_localized_symbol () #71 0x00000000005ccf2e in process_mark_stack () #72 0x00000000005ce184 in mark_char_table () #73 0x00000000005ce24e in mark_char_table () #74 0x00000000005cd50e in process_mark_stack () #75 0x00000000005ce184 in mark_char_table () #76 0x00000000005ce24e in mark_char_table () #77 0x00000000005cd50e in process_mark_stack () #78 0x00000000005ce29f in mark_localized_symbol () #79 0x00000000005ccf2e in process_mark_stack () #80 0x00000000005ce29f in mark_localized_symbol () #81 0x00000000005ccf2e in process_mark_stack () #82 0x00000000005ce29f in mark_localized_symbol () #83 0x00000000005ccf2e in process_mark_stack () #84 0x00000000005ce29f in mark_localized_symbol () #85 0x00000000005ccf2e in process_mark_stack () #86 0x00000000005ce184 in mark_char_table () #87 0x00000000005ce22e in mark_char_table () #88 0x00000000005cd50e in process_mark_stack () #89 0x00000000005ce184 in mark_char_table () #90 0x00000000005ce22e in mark_char_table () #91 0x00000000005cd50e in process_mark_stack () #92 0x00000000005cd80d in process_mark_stack () #93 0x00000000005ce296 in mark_localized_symbol () #94 0x00000000005ccf2e in process_mark_stack () #95 0x00000000005ce29f in mark_localized_symbol () #96 0x00000000005ccf2e in process_mark_stack () #97 0x00000000005ce29f in mark_localized_symbol () #98 0x00000000005ccf2e in process_mark_stack () #99 0x00000000005ccf2e in process_mark_stack () #100 0x00000000005ce29f in mark_localized_symbol () #101 0x00000000005ccf2e in process_mark_stack () #102 0x00000000005ce29f in mark_localized_symbol () #103 0x00000000005ccf2e in process_mark_stack () #104 0x00000000005ce29f in mark_localized_symbol () #105 0x00000000005ccf2e in process_mark_stack () #106 0x000000000066b820 in traverse_intervals_noorder () #107 0x00000000005cd3fa in process_mark_stack () #108 0x00000000005ce29f in mark_localized_symbol () #109 0x00000000005ccf2e in process_mark_stack () #110 0x00000000005ce29f in mark_localized_symbol () #111 0x00000000005ccf2e in process_mark_stack () #112 0x00000000005cd80d in process_mark_stack () #113 0x00000000005ce296 in mark_localized_symbol () #114 0x00000000005ccf2e in process_mark_stack () #115 0x000000000066b820 in traverse_intervals_noorder () #116 0x00000000005cd3fa in process_mark_stack () #117 0x00000000005ce29f in mark_localized_symbol () #118 0x00000000005ccf2e in process_mark_stack () #119 0x00000000005cd80d in process_mark_stack () #120 0x00000000005ce29f in mark_localized_symbol () #121 0x00000000005ccf2e in process_mark_stack () #122 0x00000000005cd80d in process_mark_stack () #123 0x00000000005ce296 in mark_localized_symbol () #124 0x00000000005ccf2e in process_mark_stack () #125 0x00000000005cd80d in process_mark_stack () #126 0x00000000005ce296 in mark_localized_symbol () #127 0x00000000005ccf2e in process_mark_stack () #128 0x00000000005cd80d in process_mark_stack () #129 0x00000000005ce296 in mark_localized_symbol () #130 0x00000000005ccf2e in process_mark_stack () #131 0x00000000005ce29f in mark_localized_symbol () #132 0x00000000005ccf2e in process_mark_stack () #133 0x00000000005ce29f in mark_localized_symbol () #134 0x00000000005ccf2e in process_mark_stack () #135 0x00000000005ce29f in mark_localized_symbol () #136 0x00000000005ccf2e in process_mark_stack () #137 0x00000000005ce29f in mark_localized_symbol () #138 0x00000000005ccf2e in process_mark_stack () #139 0x00000000005ce29f in mark_localized_symbol () #140 0x00000000005ccf2e in process_mark_stack () #141 0x00000000005ce29f in mark_localized_symbol () #142 0x00000000005ccf2e in process_mark_stack () #143 0x00000000005ce29f in mark_localized_symbol () #144 0x00000000005ccf2e in process_mark_stack () #145 0x00000000005ce29f in mark_localized_symbol () #146 0x00000000005ccf2e in process_mark_stack () #147 0x00000000005cd80d in process_mark_stack () #148 0x00000000005ce296 in mark_localized_symbol () #149 0x00000000005ccf2e in process_mark_stack () #150 0x000000000066b820 in traverse_intervals_noorder () #151 0x00000000005cd3fa in process_mark_stack () #152 0x00000000005ce29f in mark_localized_symbol () #153 0x00000000005ccf2e in process_mark_stack () #154 0x00000000005ce29f in mark_localized_symbol () #155 0x00000000005ccf2e in process_mark_stack () #156 0x00000000005ce29f in mark_localized_symbol () #157 0x00000000005ccf2e in process_mark_stack () #158 0x000000000066b820 in traverse_intervals_noorder () #159 0x00000000005cd3fa in process_mark_stack () #160 0x00000000005ce29f in mark_localized_symbol () #161 0x00000000005ccf2e in process_mark_stack () #162 0x00000000005ce29f in mark_localized_symbol () #163 0x00000000005ccf2e in process_mark_stack () #164 0x00000000005ce29f in mark_localized_symbol () #165 0x00000000005ccf2e in process_mark_stack () #166 0x000000000066b820 in traverse_intervals_noorder () #167 0x00000000005cd3fa in process_mark_stack () #168 0x00000000005ce29f in mark_localized_symbol () #169 0x00000000005ccf2e in process_mark_stack () #170 0x00000000005ce29f in mark_localized_symbol () #171 0x00000000005ccf2e in process_mark_stack () #172 0x00000000005ce29f in mark_localized_symbol () #173 0x00000000005ccf2e in process_mark_stack () #174 0x00000000005ce29f in mark_localized_symbol () #175 0x00000000005ccf2e in process_mark_stack () #176 0x00000000005cda02 in process_mark_stack () #177 0x00000000005cda02 in process_mark_stack () #178 0x00000000005cd906 in process_mark_stack () #179 0x00000000005cda02 in process_mark_stack () #180 0x000000000066b820 in traverse_intervals_noorder () #181 0x00000000005cd3fa in process_mark_stack () #182 0x00000000005ce29f in mark_localized_symbol () #183 0x00000000005ccf2e in process_mark_stack () #184 0x00000000005cd80d in process_mark_stack () #185 0x00000000005ce296 in mark_localized_symbol () #186 0x00000000005ccf2e in process_mark_stack () #187 0x00000000005cd80d in process_mark_stack () #188 0x00000000005cd80d in process_mark_stack () #189 0x00000000005ce296 in mark_localized_symbol () #190 0x00000000005ccf2e in process_mark_stack () #191 0x00000000005cd80d in process_mark_stack () #192 0x00000000005ce296 in mark_localized_symbol () #193 0x00000000005ccf2e in process_mark_stack () #194 0x00000000005ccae9 in visit_static_gc_roots () #195 0x00000000005ce4be in garbage_collect () #196 0x00000000005cf12b in Fgarbage_collect () #197 0x00000000005f31d5 in Ffuncall () #198 0x00001520004965fa in F67636d682d69646c652d676172626167652d636f6c6c656374_gcmh_idle_garbage_collect_0 () from /u/panagopo/.config/emacs/.local/cache/eln/29.4-826ed2e1/gcmh-f09b0fce-70d70e65.eln #199 0x00000000005f31d5 in Ffuncall () #200 0x00000000005f35d8 in Fapply () #201 0x00000000005f31d5 in Ffuncall () #202 0x0000152016611f38 in F74696d65722d6576656e742d68616e646c6572_timer_event_handler_0 () from /nix/store/fn4cfyfxvql6bw0i938sk619w75kl4ph-emacs-29.4/bin/../lib/emacs/29.4/native-lisp/29.4-826ed2e1/preloaded/timer-3ee7cfd9-226b3dc9.eln #203 0x00000000005f31d5 in Ffuncall () #204 0x000000000056b44b in timer_check () #205 0x000000000056b7e5 in readable_events () #206 0x000000000056baf7 in get_input_pending () #207 0x000000000056bc47 in detect_input_pending_run_timers () #208 0x000000000065709d in wait_reading_process_output () #209 0x000000000056c457 in read_event_from_main_queue () #210 0x000000000056e95f in read_char () #211 0x0000000000570db8 in read_key_sequence () #212 0x0000000000572d97 in command_loop_1 () #213 0x00000000005f18a7 in internal_condition_case () #214 0x000000000055d646 in command_loop_2 () #215 0x00000000005f17e3 in internal_catch () #216 0x000000000055d5d9 in command_loop () #217 0x000000000056242b in recursive_edit_1 () #218 0x00000000005627cf in Frecursive_edit () #219 0x000000000042d1f5 in main () (gdb) print $_siginfo $1 = {si_signo = 11, si_errno = 0, si_code = 128, _sifields = {_pad = {0 }, _kill = {si_pid = 0, si_uid = 0}, _timer = {si_tid = 0, si_overrun = 0, si_sigval = {sival_int = 0, sival_ptr = 0x0}}, _rt = {si_pid = 0, si_uid = 0, si_sigval = {sival_int = 0, sival_ptr = 0x0}}, _sigchld = {si_pid = 0, si_uid = 0, si_status = 0, si_utime = 0, si_stime = 0}, _sigfault = { si_addr = 0x0, _addr_lsb = 0, _addr_bnd = {_lower = 0x0, _upper = 0x0}}, _sigpoll = {si_band = 0, si_fd = 0}, _sigsys = {_call_addr = 0x0, _syscall = 0, _arch = 0}}} (gdb) System Information: In GNU Emacs 29.4 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.18.0, Xaw3d scroll bars) Windowing system distributor 'The Cygwin/X Project', version 11.0.12000000 System Description: Red Hat Enterprise Linux 8.10 (Ootpa) Configured using: 'configure --prefix=/nix/store/fn4cfyfxvql6bw0i938sk619w75kl4ph-emacs-29.4 --disable-build-details --with-modules --with-x-toolkit=lucid --with-cairo --with-xft --with-compress-install --with-toolkit-scroll-bars --with-native-compilation --without-imagemagick --with-mailutils --without-small-ja-dic --with-tree-sitter --with-xinput2 --without-xwidgets --with-dbus --with-selinux' 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 SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XAW3D XDBE XIM XINPUT2 XPM LUCID ZLIB Important settings: value of $LC_COLLATE: C value of $LC_CTYPE: C.UTF-8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix