GNU bug report logs - #66151
29.1.50; daemon crashing after X forwarding disconnects

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From: George P <georgepanagopo <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>
Cc: 66151 <at> debbugs.gnu.org
Subject: bug#66151: 29.1.50; daemon crashing after X forwarding disconnects
Date: Thu, 11 Apr 2024 22:03:06 -0400

Here is the new trace:

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x0000000000537fb2 in realize_default_face (f=0x9ff1650) at xfaces.c:5864
5864          XSETFONT (font_object, FRAME_FONT (f));
Missing separate debuginfos, use: dnf debuginfo-install
GConf2-3.2.6-22.el8.x86_64 bzip2-libs-1.0.6-26.el8.x86_64
cairo-1.15.12-6.el8.x86_64 dbus-glib-0.110-2.el8.x86_64
dbus-libs-1.12.8-26.el8.x86_64 dconf-0.28.0-4.el8.x86_64
expat-2.2.5-11.el8.x86_64 fontconfig-2.13.1-4.el8.x86_64
freetype-2.9.1-9.el8.x86_64 glib2-2.56.4-161.el8.x86_64
gmp-6.1.2-10.el8.x86_64 gnutls-3.6.16-8.el8_9.1.x86_64
graphite2-1.3.10-10.el8.x86_64 harfbuzz-1.7.5-3.el8.x86_64
jbigkit-libs-2.1-14.el8.x86_64 libICE-1.0.9-15.el8.x86_64
libSM-1.2.3-1.el8.x86_64 libX11-1.6.8-6.el8.x86_64
libX11-xcb-1.6.8-6.el8.x86_64 libXau-1.0.9-3.el8.x86_64
libXaw-1.0.13-10.el8.x86_64 libXcomposite-0.4.4-14.el8.x86_64
libXcursor-1.1.15-3.el8.x86_64 libXfixes-5.0.3-7.el8.x86_64
libXi-1.7.10-1.el8.x86_64 libXinerama-1.1.4-1.el8.x86_64
libXmu-1.1.3-1.el8.x86_64 libXpm-3.5.12-9.el8_7.x86_64
libXrandr-1.5.2-1.el8.x86_64 libXrender-0.9.10-7.el8.x86_64
libXt-1.1.5-12.el8.x86_64 libacl-2.2.53-1.el8.x86_64
libattr-2.4.48-3.el8.x86_64 libblkid-2.32.1-43.el8.x86_64
libcap-2.48-6.el8_9.x86_64 libffi-3.1-24.el8.x86_64
libgcrypt-1.8.5-7.el8_6.x86_64 libgpg-error-1.31-1.el8.x86_64
libjpeg-turbo-1.5.3-12.el8.x86_64 libmount-2.32.1-43.el8.x86_64
libpng-1.6.34-5.el8.x86_64 libselinux-2.9-8.el8.x86_64
libtasn1-4.13-4.el8_7.x86_64 libtiff-4.0.9-29.el8_8.x86_64
libunistring-0.9.9-3.el8.x86_64 libuuid-2.32.1-43.el8.x86_64
libwebp-1.0.0-9.el8_9.1.x86_64 libxcb-1.13.1-1.el8.x86_64
libxml2-2.9.7-9.el8.11.deshaw.x86_64 lz4-libs-1.8.3-3.el8_4.x86_64
nettle-3.4.1-7.el8.x86_64 p11-kit-0.23.22-1.el8.x86_64
pcre-8.42-6.el8.x86_64 pcre2-10.32-3.el8_6.x86_64
sqlite-libs-3.26.0-19.el8_9.x86_64 systemd-libs-239-78.el8.x86_64
zlib-1.2.11-25.el8.x86_64
(gdb) where
#0  0x0000000000537fb2 in realize_default_face (f=0x9ff1650) at xfaces.c:5864
#1  0x0000000000537c3e in realize_basic_faces (f=0x9ff1650) at xfaces.c:5798
#2  0x000000000052aced in recompute_basic_faces (f=0x9ff1650) at xfaces.c:719
#3  0x000000000071d794 in free_realized_fontsets (base=0x7fffec5a731d)
at fontset.c:1372
#4  0x000000000071ebf7 in Fset_fontset_font (fontset=0x30,
characters=0x7fffeb3b7bc3, font_spec=0x15e66cd, frame=0xf3a095,
add=0x0) at fontset.c:1720
#5  0x000000000066ba2f in eval_sub (form=0x7fffeb3b7be3) at eval.c:2539
#6  0x000000000066b1d3 in Feval (form=0x7fffeb3b7be3, lexical=0x30) at
eval.c:2389
#7  0x000000000066d170 in funcall_subr (subr=0xce3580 <Seval>,
numargs=2, args=0x7fffebd4c1b0) at eval.c:3092
#8  0x00000000006bf470 in exec_byte_code (fun=0x7fffec2b86e5,
args_template=513, nargs=2, args=0x7fffebd4c4c0) at bytecode.c:814
#9  0x000000000066d76e in funcall_lambda (fun=0x2c39e95, nargs=0,
arg_vector=0x7fffffffba60) at eval.c:3194
#10 0x000000000066cc24 in funcall_general (fun=0x2c39e95, numargs=0,
args=0x7fffffffba60) at eval.c:2972
#11 0x000000000066cea9 in Ffuncall (nargs=1, args=0x7fffffffba58) at eval.c:3022
#12 0x0000000000665f0c in call0 (fn=0x2c39e95) at lisp.h:3503
#13 0x0000000000668dcb in Fhandler_bind_1 (nargs=3,
args=0x7fffebd4c128) at eval.c:1403
#14 0x000000000066d369 in funcall_subr (subr=0xce3440
<Shandler_bind_1>, numargs=3, args=0x7fffebd4c128) at eval.c:3113
#15 0x00000000006bf470 in exec_byte_code (fun=0x7fffec2b17e5,
args_template=1025, nargs=4, args=0x7fffffffc2c0) at bytecode.c:814
#16 0x000000000066d76e in funcall_lambda (fun=0x7fffec2b17e5, nargs=4,
arg_vector=0x7fffffffc2a0) at eval.c:3194
#17 0x000000000066cc24 in funcall_general (fun=0x7fffec2b17e5,
numargs=4, args=0x7fffffffc2a0) at eval.c:2972
#18 0x000000000066cea9 in Ffuncall (nargs=5, args=0x7fffffffc298) at eval.c:3022
#19 0x0000000000662c69 in Ffuncall_interactively (nargs=5,
args=0x7fffffffc298) at callint.c:250
#20 0x000000000066d369 in funcall_subr (subr=0xce2cc0
<Sfuncall_interactively>, numargs=5, args=0x7fffffffc298) at
eval.c:3113
#21 0x000000000066cbd8 in funcall_general (fun=0xce2cc5
<Sfuncall_interactively+5>, numargs=5, args=0x7fffffffc298) at
eval.c:2968
#22 0x000000000066cea9 in Ffuncall (nargs=6, args=0x7fffffffc290) at eval.c:3022
#23 0x000000000066c358 in Fapply (nargs=3, args=0x7fffffffc3d0) at eval.c:2693
#24 0x0000000000663085 in Fcall_interactively
(function=0x7fffeb5542f0, record_flag=0x0, keys=0x70ae4a5) at
callint.c:342
#25 0x000000000066d19f in funcall_subr (subr=0xce2d00
<Scall_interactively>, numargs=3, args=0x7fffebd4c070) at eval.c:3094
#26 0x00000000006bf470 in exec_byte_code (fun=0x7fffec92a33d,
args_template=1025, nargs=1, args=0x7fffffffcda0) at bytecode.c:814
#27 0x000000000066d76e in funcall_lambda (fun=0x7fffec92a33d, nargs=1,
arg_vector=0x7fffffffcd98) at eval.c:3194
#28 0x000000000066cc24 in funcall_general (fun=0x7fffec92a33d,
numargs=1, args=0x7fffffffcd98) at eval.c:2972
#29 0x000000000066cea9 in Ffuncall (nargs=2, args=0x7fffffffcd90) at eval.c:3022
#30 0x00000000005aac1f in command_loop_1 () at keyboard.c:1549
#31 0x0000000000669463 in internal_condition_case (bfun=0x5aa419
<command_loop_1>, handlers=0x90, hfun=0x5a99e3 <cmd_error>) at
eval.c:1537
#32 0x00000000005aa088 in command_loop_2 (handlers=0x90) at keyboard.c:1167
#33 0x000000000066897e in internal_catch (tag=0x10c20, func=0x5aa065
<command_loop_2>, arg=0x90) at eval.c:1217
#34 0x00000000005aa020 in command_loop () at keyboard.c:1145
#35 0x00000000005a9592 in recursive_edit_1 () at keyboard.c:753
#36 0x00000000005a973a in Frecursive_edit () at keyboard.c:836
#37 0x00000000005a5c81 in main (argc=2, argv=0x7fffffffd1e8) at emacs.c:2618
(gdb) print f->output_data
$1 = {tty = 0x0, x = 0x0, w32 = 0x0, ns = 0x0, pgtk = 0x0, haiku =
0x0, android = 0x0}

This is using the master branch on commit
0fab2649e288c7a350018293443e709eba6b0fe2. Let me know if you want me
to do more digging in gdb.

On Wed, Apr 10, 2024 at 8:50 PM Po Lu <luangruo <at> yahoo.com> wrote:
>
> George P <georgepanagopo <at> gmail.com> writes:
>
> > This is the trace I get (similar to Ben's):
> >
> > Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
> > 0x0000000000506a94 in realize_basic_faces ()
> > (gdb) where
> > #0  0x0000000000506a94 in realize_basic_faces ()
> > #1  0x000000000050979d in recompute_basic_faces ()
> > #2  0x000000000068b172 in Fset_fontset_font ()
> > #3  0x00000000005ecdc6 in eval_sub ()
> > #4  0x00000000005eef49 in Feval ()
> > #5  0x00007ffff23830d8 in F6576616c2d65787072657373696f6e_eval_expression_0 ()
> >    from /nix/store/1db10dgbfwzb5q3m78f497arkpv34y21-emacs-29.1/bin/../lib/emacs/29.1/native-lisp/29.1-41778d84/preloaded/simple-fab5b0cf-a050dc2b.eln
> > #6  0x00000000005e8d61 in Ffuncall ()
> > #7  0x00000000005e4c41 in Ffuncall_interactively ()
> > #8  0x00000000005e8d61 in Ffuncall ()
> > #9  0x00000000005e8f80 in Fapply ()
> > #10 0x00000000005e65c3 in Fcall_interactively ()
> > #11 0x00007ffff23876dd in F636f6d6d616e642d65786563757465_command_execute_0 ()
> >    from /nix/store/1db10dgbfwzb5q3m78f497arkpv34y21-emacs-29.1/bin/../lib/emacs/29.1/native-lisp/29.1-41778d84/preloaded/simple-fab5b0cf-a050dc2b.eln
> > #12 0x00000000005e8d61 in Ffuncall ()
> > #13 0x000000000056c05c in command_loop_1 ()
> > #14 0x00000000005e75af in internal_condition_case ()
> > #15 0x0000000000556ec6 in command_loop_2 ()
> > #16 0x00000000005e7513 in internal_catch ()
> > #17 0x0000000000556e61 in command_loop ()
> > #18 0x000000000055b9eb in recursive_edit_1 ()
> > #19 0x000000000055bd6f in Frecursive_edit ()
> > #20 0x000000000042d184 in main ()
> >
> > This is probably not that useful without debug symbols though....
>
> Yes, please install them and generate a new backtrace.

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