Crash during garbage collection

Crash during garbage collection

[George P]

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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
<repeats 28 times>}, _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

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Re: Crash during garbage collection

[Eli Zaretskii]

> From: George P <georgepanagopo@gmail.com>
> Date: Mon, 25 Nov 2024 22:47:42 -0500
> 
> 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.

It's indeed not very useful.