Can you describe what you were doing at the time of the crash?
Please show the details of 'v'. Like this:
(gdb) frame 0
(gdb) p v
(gdb) p/x v->header
Also, you've elided the part where GDB says what fatal signal was
delivered. I'm guessing it was SIGSEGV, but please show that part of
what GDB displayed when it kicked in.
Please keep the crashed session inside GDB in case we want you to look
around and report more data.
Unfortunately, I don't have the program running (because I foolishly thought I could continue from the crash). I do have the core however, here is what you both asked for:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 vector_marked_p (v=v@entry=0x4000000023000008) at alloc.c:4273
warning: 4273 alloc.c: No such file or directory
[Current thread is 1 (LWP 691035)]
warning: File "/nix/store/ji2c308n46lfvpi9jpr3ma8rqq42wx3p-glib-2.82.4/lib/libgobject-2.0.so.0.8200.4-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
warning: File "/nix/store/ji2c308n46lfvpi9jpr3ma8rqq42wx3p-glib-2.82.4/lib/libglib-2.0.so.0.8200.4-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
warning: File "/nix/store/8ryr50ic059w32djkygs1g1kxdpj7dgx-isl-0.20/lib/libisl.so.19.1.0-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
warning: File "/nix/store/fjyh571wr8ifsw1h6j2nx22fmjj91b6y-gcc-14-20241116-lib/lib/libstdc++.so.6.0.33-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
(gdb) frame 0
#0 vector_marked_p (v=v@entry=0x4000000023000008) at alloc.c:4273
4273 in alloc.c
(gdb) p v
$1 = (const struct Lisp_Vector *) 0x4000000023000008
(gdb) p/x v->header
Cannot access memory at address 0x4000000023000008
(gdb) set print elements 0
(gdb) p last_marked
$2 = {0x15554ea7b163, 0x1f3eb0, 0x15554ea7b153, 0x15554ea7b113, 0x10710, 0x15554ea7b103, 0xe344f4, 0x2237643, 0x10da0, 0x2237633, 0x15554de36280, 0xc64485 <Sselected_window+5>, 0x15554de5d268, 0x13ff3ad, 0x2, 0x1d373234, 0x46ddbcd, 0x15554de5d450, 0x15554df5c948, 0x60, 0x0, 0x15554ec524dd, 0x15554eb23723, 0x0, 0x15554eb24c65, 0x0, 0x0, 0xa, 0x10710, 0x15554df5c8b8, 0x60, 0x0, 0x0, 0x0, 0x3e10, 0x15554e014d50, 0x60, 0x0,
0x15554ed0a8e5, 0x15554eb2b183, 0x0, 0x15554eb73b0d, 0x0, 0x0, 0x16, 0x7842613, 0x1d54f9e4, 0x31d4a, 0x9839b1d, 0x1818f8b3, 0x9540, 0x1818f873, 0x1818f893, 0x3d80, 0x1818f883, 0x30, 0x1818f853, 0x30, 0x0, 0x1ce4e9ad, 0x1be0b704, 0x18505ee3, 0x18505f03, 0xdc20, 0xa, 0x18505eb3, 0x18505ec3, 0xdb90, 0x2, 0x18505e43, 0x18505e93, 0x96c0, 0x18505e83, 0x3a, 0x18505e73, 0xa, 0x18505e53, 0x6, 0x4d533dd, 0x20ccaced, 0x1818fc43,
0x9540, 0x1818fc33, 0x0, 0x1818fc13, 0xe460, 0x0, 0x1ce4e9ad, 0x0, 0x0, 0x30, 0x20ccad45, 0x179dfc73, 0x9540, 0x179dfc63, 0x0, 0x179dfc03, 0x179dfc53, 0x15554de617c0, 0x179dfc13, 0x1bb24600, 0x60, 0x18502db3, 0x95a0, 0x18502dc3, 0x18502f33, 0x0, 0x18502f43, 0x466b42d, 0x406, 0x1d49ebc4, 0x46cfcd5, 0x15554e0bd5c8 <F756e6971756966792d726174696f6e616c697a65_uniquify_rationalize_0+744>, 0x60, 0x1475f63, 0x95a0, 0x1475f53,
0x2242473, 0x248c664, 0x2242433, 0x1475f03, 0x4290, 0x1475ef3, 0x103f8b4, 0x1475ee3, 0x103f8d4, 0x1475ed3, 0x0, 0x1475ec3, 0x0, 0x1475f43, 0x0, 0x1475f33, 0x15554edb315b, 0x4290, 0x15554edb316b, 0x15554eb8d5fc, 0x15554edb317b, 0x15554edb318c, 0x15554eb2c6b3, 0x24b5b4d, 0x0, 0x0, 0x245d955, 0x0, 0x0, 0x15554e0bd578 <F756e6971756966792d726174696f6e616c697a65_uniquify_rationalize_0+664>, 0x60, 0x2242523, 0x15554de31ee0,
0x2242513, 0x24b5c25, 0x15554de31ee0, 0x15554e0bd578 <F756e6971756966792d726174696f6e616c697a65_uniquify_rationalize_0+664>, 0x2242b13, 0x2242ad3, 0x2242753, 0x15554dfd07e8, 0x127db30, 0x2242b23, 0x15554ece9985, 0x15554de35860, 0x15554dff3f28, 0x15554ece9985, 0x15554ece9abb, 0x10140, 0x15554ece9acb, 0x30, 0x0, 0x192, 0x15554ece9a15, 0x606, 0x15554ece9a6c, 0x15554ece9a45, 0x15554de35288, 0x15554ece9a5b, 0x15554dfd0818,
0x16, 0x15554eb2b3a4, 0x15554ece99b5, 0x606, 0x15554ece99f4, 0x15554ece99e5, 0x7b60, 0x12, 0x15554eb2b2d4, 0x2242ac3, 0x15554eb2b275, 0x22429d3, 0x2242993, 0x2, 0x222be93, 0x15554f00ebbd, 0x2242983, 0x15554eb2b275, 0x2220813, 0x251724d, 0x15554de323b8, 0x22207c3, 0x1ee26a3, 0x15554e3190c8 <top_level_run+728>, 0x1ee26b3, 0xa49d00 <pure+3488800>, 0x60, 0x226e9d3, 0x15554de5a568, 0x226e9c3, 0x1f73c54, 0x226ea63,
0x15554de5ec50, 0x226ea53, 0x226ea83, 0x1eea8c3, 0x15554e26ab80 <F7363726f6c6c2d6261722d746f6f6c6b69742d7363726f6c6c_scroll_bar_toolkit_scroll_0+1136>, 0x60, 0x42c7a73, 0x13e60, 0x42c7a63, 0x42c7a53, 0x15554def15c8, 0x42c7a43, 0xc197c0 <pure+5388000>, 0x42c7a33, 0x36df2c0, 0x60, 0x0, 0x43f78f5, 0x42caeb3, 0x0, 0x4384d5d, 0x0, 0x0, 0x42c7a93, 0x15554dea8fb0, 0x42c7a83, 0x43d4c94, 0x0, 0x1eea8d3, 0x15554de48168,
0x1eea8e3, 0x1f73cf4, 0x1eea8f3, 0x1f73d14, 0x226ea73, 0x1eea873, 0x1253d0, 0x1eea883, 0x15554de48168, 0x1eea893, 0x1f73cb4, 0x1eea8a3, 0x1f73cd4, 0x226ea43, 0x1eea7f3, 0x1253d0, 0x1eea813, 0x15554de48168, 0x1eea823, 0x1f73c74, 0x1eea833, 0x1f73c94, 0x226eba3, 0x15554de30d68, 0x226eb93, 0x226eb83, 0x226eb73, 0xb0eba0 <pure+4295360>, 0x15554dfc0740, 0x60, 0x1f652493, 0x15554de32c08, 0x1f6524a3, 0x124f290, 0x60, 0x0,
0x538cb05, 0x1f67b0c3, 0x9540, 0x1f67b093, 0x1f67b0b3, 0x30, 0x1f67b0a3, 0x30, 0x1f67b083, 0x30, 0x0, 0x1baba95d, 0x20bef7e4, 0x1f67e3e3, 0x1f67e3f3, 0xdc20, 0xa, 0x1f67e3c3, 0x1f67e3d3, 0xdb90, 0x2, 0x1f67e1d3, 0x1f67e3b3, 0x96c0, 0x1f67e3a3, 0x3a, 0x1f67e393, 0xa, 0x1f67e1e3, 0x6, 0x979f79d, 0x9492115, 0x1f67b4f3, 0x9540, 0x1f67b353, 0x1f67b393, 0x30, 0x1f67b383, 0x30, 0x1f67b373, 0x3d80, 0x1f67b363, 0x30,
0x1f67b343, 0x30, 0x0, 0x1baba95d, 0x0, 0x0, 0x30, 0x949216d, 0x1f67b323, 0x9540, 0x1f67b2e3, 0x1f67b313, 0x30, 0x1f67b303, 0x30, 0x1f67b2f3, 0x30, 0x1f67b2d3, 0x30, 0x0, 0x1baba95d, 0x0, 0x0, 0x30, 0x94921c5, 0x1f67b163, 0x9540, 0x1f67b153, 0x0, 0x1f67b0f3, 0xe460, 0x0, 0x1baba95d, 0x0, 0x0, 0x30, 0x949221d, 0x1f67b2b3, 0x9540, 0x1f67b2a3, 0x0, 0x1f67b263, 0x1f67b293, 0xafe0, 0x1f67b283, 0xa2, 0x1f67b273, 0xa2, 0x0,
0x1baba95d, 0x0, 0x0, 0x30, 0x9492275, 0x1f67b243, 0x9540, 0x1f67b233, 0x0, 0x1f67b203, 0x1f67b223, 0x15554de617c0, 0x1f67b213, 0x15554df1a3a0, 0x60, 0x1f641ba3, 0x95a0, 0x1f641bb3, 0x1f641bc3, 0x8ae5574, 0x1f641bd3, 0x15554ec0ff33, 0x4290, 0x15554ec0ff43, 0x15554ec0ff84, 0x15554ec0ff53, 0x15554ec0ff64, 0x15554eb2c6b3, 0x38294cd, 0x1f6463e3, 0x9540, 0x1f6463a3, 0x1f6463d3, 0x30, 0x1f6463c3, 0x3d50, 0x1f6463b3, 0x30,
0x1f646393, 0x30, 0x0, 0x98e7985, 0x8f680f4, 0x1f647ac3, 0x1f647ad3, 0xdc20, 0xa, 0x1f647aa3, 0x1f647ab3, 0xdb90, 0x2, 0x1f647a53, 0x1f647a93, 0x96c0, 0x1f647a83, 0x3a, 0x1f647a73, 0xa, 0x1f647a63, 0x6, 0x98e79dd, 0x98f1d0d, 0x0, 0x400000002300000d, 0x0, 0x27f62ad, 0x0, 0x0, 0x60, 0x2235443, 0x10da0, 0x2235433, 0x30, 0xc6d2a5 <Sactive_minibuffer_window+5>, 0x15554defbf98, 0x60, 0x15554ea7b0c3, 0x15554de5dc98,
0x15554ea7b0b3, 0xe33ed5, 0x606, 0xe34c84, 0xe33eb5, 0x15554de78758, 0x15554defbf98, 0xe33e85, 0x606, 0xe35054, 0xe33e6d, 0x10710, 0x60, 0x15554f053c7b, 0x7da0, 0x15554f053c8b, 0x11850, 0x60, 0x15554f4abdeb, 0x7da0, 0x15554f4abdfb, 0x11850, 0x15554f4abe0b, 0x7e00, 0x15554f4abe1b, 0x15554f4abeab, 0x11850, 0x15554f4abe2b, 0x7dd0, 0x15554f4abe3b, 0x15554f4abe8b, 0x11850, 0x15554f4abe9b, 0x2, 0x15554f4abe4b, 0xd530,
0x15554f4abe5b, 0x15554f4abe6b, 0x15554f4abe7b, 0x2, 0x11850, 0x0, 0x15554f053c9b, 0x7e00, 0x15554f053cab, 0x15554f053d3b, 0x10710, 0x15554f053cbb, 0x7dd0, 0x15554f053ccb, 0x15554f053d1b, 0x10710, 0x15554f053d2b, 0x2, 0x15554f053cdb, 0xd530, 0x15554f053ceb, 0x15554f053cfb, 0x15554f053d0b, 0x2, 0x10710, 0xc643c5 <Sselect_window+5>, 0x3de0, 0x1a, 0xe35074, 0x1e, 0xe35094}
(gdb) p last_marked_index
$3 = 431
This part seems to indicate you run something called
gcmh-idle-garbage-collect, which triggers GC from a timer function?
If so, please describe what you do with this and show the relevant
code.
In general, please describe anything related to GC and timers that you
customized in your sessions, as that could be relevant to the nature
and the reasons of this bug.
(setq gcmh-idle-delay 'auto ; default is 15s
gcmh-auto-idle-delay-factor 10
gcmh-high-cons-threshold (* 64 1024 1024)) ; 64mb
I don't think that there is anything else GC related that I am using.
Also, what is the memory footprint of the crashed Emacs process?
Hard for me to say. I restored my session and this is the memory-report for that session. I would assume that the crashed session is 2-3 times larger:
Estimated Emacs Memory Usage
133 MiB Overall Object Memory Usage
83 MiB Total Buffer Memory Usage
40 MiB Reserved (But Unused) Object Memory
34 MiB Memory Used By Global Variables
13 MiB Memory Used By Symbol Plists
2.6 KiB Total Image Cache Size
Object Storage
49 MiB Conses
42 MiB Strings
25 MiB Vectors
11 MiB Intervals
5.2 MiB Symbols
359 KiB Buffer-Objects
54 KiB Floats
Largest Buffers
7.1 MiB REPL-useq
5.6 MiB alloc.c
4.4 MiB fish_history
3.3 MiB *code-conversion-work*
2.1 MiB vat.pdf
2 MiB VTerm ~/scratch
1.9 MiB ta.py
1.9 MiB loom.pdf
1.6 MiB REPL-9_useq<2>
1.6 MiB REPL-9_useq
1.6 MiB specification.py
1.5 MiB loom-oos.pdf
1.4 MiB REPL-jpeq
1.2 MiB uf.py
1.2 MiB xterm.c
1.2 MiB *Messages*
1.1 MiB REPL-peeq
1.1 MiB fc-monitor.py
865 KiB vat.tex
843 KiB VTerm /v/l/s/coredump
Largest Variables
3 MiB kill-ring
3 MiB kill-ring-yank-pointer
2.4 MiB undo-equiv-table
2.2 MiB package-lint-symbol-info
2.2 MiB load-history
2.2 MiB lsp--session
1.8 MiB lsp-modeline--diagnostics-wks->strings
813 KiB nerd-icons/mdicon-alist
709 KiB easy-menu-converted-items-table
707 KiB persp-buffer-props-hash
653 KiB *persp-hash*
652 KiB info-lookup-cache
625 KiB treemacs--themes
547 KiB treemacs--scope-storage
513 KiB face--new-frame-defaults
436 KiB centaur-tabs-display-hash
402 KiB file-notify-descriptors
389 KiB minor-mode-map-alist
388 KiB yank-menu
374 KiB centaur-tabs--buffers
Does this mean you run Emacs on a Red Hat system via the Cygwin X
implementation that runs on Windows?
Correct.
Anything else that is "unusual" in your sessions? Please don't save
us any such details, as they might be relevant, or provide important
clues as to where to look for the causes.
I am using doomemacs (
https://github.com/doomemacs/doomemacs) so my configuration is very large and mostly not written by me. I don't think there is anything particularly unusual with it though.
In particular, last_marked and last_marked_index would be very
interesting.
I have included that in the gdb trace above. Please, let me know if there is anything else I can dig out from the core.
Thanks!
George