Package: emacs;
Reported by: Eval EXEC <execvy <at> gmail.com>
Date: Sun, 18 Aug 2024 08:31:01 UTC
Severity: normal
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
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From: help-debbugs <at> gnu.org (GNU bug Tracking System) To: Eli Zaretskii <eliz <at> gnu.org> Cc: tracker <at> debbugs.gnu.org Subject: bug#72692: closed (Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux (Linux 6.6.45 Kde Wayland)) Date: Sat, 24 Aug 2024 09:13:02 +0000
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Your message dated Sat, 24 Aug 2024 12:09:09 +0300 with message-id <867cc6nv7u.fsf <at> gnu.org> and subject line Re: bug#72692: Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux (Linux 6.6.45 Kde Wayland) has caused the debbugs.gnu.org bug report #72692, regarding Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux (Linux 6.6.45 Kde Wayland) to be marked as done. (If you believe you have received this mail in error, please contact help-debbugs <at> gnu.org.) -- 72692: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=72692 GNU Bug Tracking System Contact help-debbugs <at> gnu.org with problems
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From: Eval EXEC <execvy <at> gmail.com> To: bug-gnu-emacs <at> gnu.org Subject: Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux (Linux 6.6.45 Kde Wayland) Date: Sun, 18 Aug 2024 16:29:13 +0800Hello, I'm help to tesing Emacs master branch (commit: 40eecd594ac) on Linux. I compile emacs source code by: ```bash make extraclean ./autogen.sh \ && ./configure \ --prefix=$(realpath ../emacs-build/$(git branch --show-current | sed 's/\//_/g'))\ --with-imagemagick --with-xwidgets \ --with-modules --with-x-toolkit=gtk3 --without-compress-install \ --without-toolkit-scroll-bars --with-native-compilation --with-mailutils\ --with-tree-sitter --with-xinput2 \ --with-dbus --with-native-compilation=aot \ --with-file-notification=inotify\ && make -j30 install ``` When I using emacs, I got crash, the backtrace is : ``` line to your configuration file "/home/exec/.config/gdb/gdbinit". For more information about this security protection see the "Auto-loading safe path" section in the GDB manual. E.g., run from the shell: info "(gdb)Auto-loading safe path" warning: File "/nix/store/x47hg342iyiw50c1fhqjzz4n0rqy3dhh-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:/nix/store/40yjzm7r5ki59kkk9423dnwbm86x7pyd-gcc-13.2.0-lib". (gdb) c The program is not being run. (gdb) bt #0 0x00007f9eaeea2efc in __pthread_kill_implementation () from /nix/store/dbcw19dshdwnxdv5q2g6wldj6syyvq7l-glibc-2.39-52/lib/libc.so.6 #1 0x00007f9eaee52e86 in raise () from /nix/store/dbcw19dshdwnxdv5q2g6wldj6syyvq7l-glibc-2.39-52/lib/libc.so.6 #2 0x0000000000473791 in terminate_due_to_signal (sig=sig <at> entry=11, backtrace_limit=backtrace_limit <at> entry=40) at emacs.c:469 #3 0x0000000000473ccd in handle_fatal_signal (sig=sig <at> entry=11) at sysdep.c:1800 #4 0x00000000005c4bf8 in deliver_thread_signal (sig=sig <at> entry=11, handler=0x473cc2 <handle_fatal_signal>) at sysdep.c:1792 #5 0x00000000005c4c7c in deliver_fatal_thread_signal (sig=11) at sysdep.c:1812 #6 handle_sigsegv (sig=11, siginfo=<optimized out>, arg=<optimized out>) at sysdep.c:1950 #7 <signal handler called> #8 fontset_find_font (fontset=fontset <at> entry=0x0, c=c <at> entry=127802, face=face <at> entry=0x13fec610, charset_id=charset_id <at> entry=-1, fallback=fallback <at> entry=false) at /home/exec/Projects/git.savannah.gnu.org/git/emacs/src/lisp.h:2127 #9 0x00000000006dd64d in fontset_font (fontset=fontset <at> entry=0x0, c=c <at> entry=127802, face=face <at> entry=0x13fec610, id=-1) at fontset.c:793 #10 0x00000000006dddce in face_for_char (f=0x28b8ee0, face=face <at> entry=0x13fec610, c=127802, pos=<optimized out>, object=<optimized out>) at fontset.c:1031 #11 0x00000000004b503c in FACE_FOR_CHAR (object=<optimized out>, pos=<optimized out>, character=<optimized out>, face=0x13fec610, f=<optimized out>) at /home/exec/Projects/git.savannah.gnu.org/git/emacs/src/dispextern.h:1962 #12 get_next_display_element (it=it <at> entry=0x7ffe5294f4c0) at xdisp.c:8547 #13 0x00000000004c4258 in display_string (string=string <at> entry=0x0, lisp_string=lisp_string <at> entry=0x765cc214, face_string=face_string <at> entry=0x0, face_string_pos=face_string_pos <at> entry=0, start=<optimized out>, it=it <at> entry=0x7ffe5294f4c0, field_width=<optimized out>, precision=<optimized out>, max_x=496, multibyte=<optimized out>) at xdisp.c:29274 #14 0x00000000004c4d78 in display_mode_element (it=it <at> entry=0x7ffe5294f4c0, depth=<optimized out>, depth <at> entry=1, field_width=<optimized out>, field_width <at> entry=0, precision=<optimized out>, precision <at> entry=0, elt=<optimized out>, props=<optimized out>, risky=<optimized out>) at xdisp.c:27822 #15 0x00000000004c5210 in display_mode_element (it=it <at> entry=0x7ffe5294f4c0, depth=1, depth <at> entry=0, field_width=field_width <at> entry=0, precision=precision <at> entry=0, elt=<optimized out>, elt <at> entry=0xef4fb43, props=props <at> entry=0x0, risky=false) at xdisp.c:28007 #16 0x00000000004c7d00 in display_mode_line (w=w <at> entry=0x3064de10, face_id=MODE_LINE_INACTIVE_FACE_ID, format=0xef4fb43) at xdisp.c:27495 #17 0x00000000004c9fdd in display_mode_lines (w=w <at> entry=0x3064de10) at xdisp.c:27408 #18 0x00000000004dfb25 in redisplay_window (window=<optimized out>, just_this_one_p=just_this_one_p <at> entry=false) at xdisp.c:20981 #19 0x00000000004e372b in redisplay_window_0 (window=window <at> entry=0x3064de15) at xdisp.c:18070 #20 0x000000000063315c in internal_condition_case_1 (bfun=bfun <at> entry=0x4e3700 <redisplay_window_0>, arg=arg <at> entry=0x3064de15, handlers=<optimized out>, hfun=hfun <at> entry=0x49b6a0 <redisplay_window_error>) at eval.c:1637 #21 0x0000000000497ff9 in redisplay_windows (window=0x3064de15) at xdisp.c:18039 #22 0x000000000049801d in redisplay_windows (window=0x3064dbf5) at xdisp.c:18033 #23 0x00000000004cb2d3 in redisplay_internal () at xdisp.c:17438 #24 0x00000000004cc8d5 in redisplay () at xdisp.c:16613 #25 0x00000000005b3dfc in read_char (commandflag=1, map=map <at> entry=0x7650ab73, prev_event=0x0, used_mouse_menu=used_mouse_menu <at> entry=0x7ffe52955ecb, end_time=end_time <at> entry=0x0) at keyboard.c:2678 #26 0x00000000005b6f34 in read_key_sequence (keybuf=keybuf <at> entry=0x7ffe52956050, prompt=prompt <at> entry=0x0, dont_downcase_last=dont_downcase_last <at> entry=false, can_return_switch_frame=can_return_switch_frame <at> entry=true, fix_current_buffer=fix_current_buffer <at> entry=true, prevent_redisplay=prevent_redisplay <at> entry=false, disable_text_conversion_p=false) at keyboard.c:10736 #27 0x00000000005b8fd8 in command_loop_1 () at keyboard.c:1429 #28 0x00000000006330cf in internal_condition_case (bfun=bfun <at> entry=0x5b8e00 <command_loop_1>, handlers=handlers <at> entry=0x90, hfun=hfun <at> entry=0x5a8e20 <cmd_error>) at eval.c:1613 #29 0x00000000005a3fb6 in command_loop_2 (handlers=handlers <at> entry=0x90) at keyboard.c:1168 #30 0x0000000000632ff3 in internal_catch (tag=tag <at> entry=0x12450, func=func <at> entry=0x5a3f90 <command_loop_2>, arg=arg <at> entry=0x90) at eval.c:1292 #31 0x00000000005a3f51 in command_loop () at keyboard.c:1146 #32 0x00000000005a898a in recursive_edit_1 () at keyboard.c:754 #33 0x00000000005a8d0f in Frecursive_edit () at keyboard.c:837 #34 0x000000000047ca5a in main (argc=1, argv=<optimized out>) at emacs.c:2624 ``` I believe the crash is related to the font, but I can't reproduce it. It happens about once a day. What information should I provide to help investigate this bug? And my OS info is: ``` ❯ nix-info -m - system: `"x86_64-linux"` - host os: `Linux 6.6.45, NixOS, 24.05 (Uakari), 24.05.20240813.4a92571` - multi-user?: `yes` - sandbox: `yes` - version: `nix-env (Nix) 2.18.5` - channels(exec): `""` - channels(root): `""` - nixpkgs: `/nix/store/qszplw617r895nbcprgyj139c9a3r0xs-source` ``` Thank you!
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From: Eli Zaretskii <eliz <at> gnu.org> To: pipcet <at> protonmail.com Cc: execvy <at> gmail.com, 72692-done <at> debbugs.gnu.org Subject: Re: bug#72692: Emacs 31.05 (40eecd594ac) get SIGSEGV on Linux (Linux 6.6.45 Kde Wayland) Date: Sat, 24 Aug 2024 12:09:09 +0300> Cc: execvy <at> gmail.com, 72692 <at> debbugs.gnu.org > Date: Mon, 19 Aug 2024 19:49:03 +0300 > From: Eli Zaretskii <eliz <at> gnu.org> > > > Date: Mon, 19 Aug 2024 16:34:59 +0000 > > From: Pip Cet <pipcet <at> protonmail.com> > > Cc: execvy <at> gmail.com, 72692 <at> debbugs.gnu.org > > > > "Eli Zaretskii" <eliz <at> gnu.org> writes: > > > > > Thanks, but I'd also like to see the callers which call > > > free_realized_face in a way that causes the latter to call > > > free_face_fontset. That's why I asked for backtraces from those > > > calls, but I don't think you sent such backtraces. What you sent was > > > > Just for the record, you asked: > > > > > So can you show a backtrace from the call to free_realized_faces > > > (supposedly called by realize_basic_faces?) which causes these > > > printfs: > > > > fontset 103 used for face 0x117cca0 > > > > fontset 103 used for face 0x2a7a3c0 > > > > fontset 103 used for face 0x117cca0 > > > > fontset 103 used for face 0x2a62860 > > > > ... which I misunderstood. Sorry. > > Sorry for being unclear. > > > Is this what you want? > > Yes, recompute_basic_faces was the prime suspect. I think we added > several calls to it over the last years, to fix problems with face > cache being emptied at some unexpected times. > > > Indeed, I can report that the bug doesn't seem to occur after this > > simple change: > > > > diff --git a/src/xfaces.c b/src/xfaces.c > > index 684b6ccfac7..a4ac9c0787a 100644 > > --- a/src/xfaces.c > > +++ b/src/xfaces.c > > @@ -736,6 +736,7 @@ recompute_basic_faces (struct frame *f) > > clear_face_cache (false); > > if (!realize_basic_faces (f)) > > emacs_abort (); > > + f->face_change = true; > > } > > } > > > > > > So something like that (though moving the call down into > > realize_basic_faces or even further would be good) would probably work > > for the OP, and emacs-30? > > I think setting the flag in recompute_basic_faces should be enough. > Let me think about it some more. I decided to go with this change only, and installed it on the emacs-30 release branch. Let's hope it makes this tricky problem go away. I'm closing this bug. If the problem resurfaces, we can reopen it.
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