Package: emacs;
Reported by: Yegor Timoshenko <yegortimoshenko <at> gmail.com>
Date: Tue, 9 Jan 2018 17:38:02 UTC
Severity: important
Tags: fixed
Merged with 30874, 31547, 31758, 31801, 31936
Found in versions 25.3, 27.0.50, 26.1
Fixed in version 26.2
Done: Robert Pluim <rpluim <at> gmail.com>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: Yegor Timoshenko <yegortimoshenko <at> gmail.com> To: 30045 <at> debbugs.gnu.org Subject: bug#30045: Emoji causing Emacs (GTK+3 backend) to crash Date: Tue, 9 Jan 2018 17:37:33 +0000
Here is the Unicode symbol that causes Emacs to crash: ✅ Reproduced on the following Emacs/GTK versions: GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.26) of 2018-01-05 GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.26) of 2017-12-20 Error log: X protocol error: BadLength (poly request too large or internal Xlib length error) on protocol request 139 When compiled with GTK, Emacs cannot recover from X disconnects. This is a GTK bug: https://bugzilla.gnome.org/show_bug.cgi?id=85715 For details, see etc/PROBLEMS. Fatal error 6: Aborted (-emacs-wrapped:24344): GLib-WARNING **: g_main_context_prepare() called recursively from within a source's check() or prepare() member. (-emacs-wrapped:24344): GLib-WARNING **: g_main_context_check() called recursively from within a source's check() or prepare() member. Backtrace: /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x509e5c] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4efa6b] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x509a63] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c359b] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c3896] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c391b] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(_XError+0x11d)[0x7effd711a13d] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(+0x42047)[0x7effd7117047] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(+0x42105)[0x7effd7117105] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(_XEventsQueued+0x55)[0x7effd7117a05] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(XFlush+0x1a)[0x7effd70f953a] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(+0x61aae)[0x7effd7136aae] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(XDestroyIC+0x12)[0x7effd7124a62] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4d41ac] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4cbeab] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4cc2fb] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4253a7] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c360b] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c3896] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c391b] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(_XError+0x11d)[0x7effd711a13d] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(+0x42047)[0x7effd7117047] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(+0x42105)[0x7effd7117105] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(_XEventsQueued+0x55)[0x7effd7117a05] /nix/store/x4cqrnzcvcc1lqvz41cp0dxqbnvsmhfk-libX11-1.6.5/lib/libX11.so.6(XPending+0x57)[0x7effd7109697] /nix/store/v2n1kfxk63p6ypwv3yi9yjp676hcsdyj-gtk+3-3.22.26/lib/libgdk-3.so.0(+0x683ae)[0x7effd8f7f3ae] /nix/store/ciz98qjymi65iaq535nylgi36mx9m6jl-glib-2.54.2/lib/libglib-2.0.so.0(g_main_context_prepare+0x15d)[0x7effd78846fd] /nix/store/ciz98qjymi65iaq535nylgi36mx9m6jl-glib-2.54.2/lib/libglib-2.0.so.0(+0x4a15b)[0x7effd788515b] /nix/store/ciz98qjymi65iaq535nylgi36mx9m6jl-glib-2.54.2/lib/libglib-2.0.so.0(g_main_context_pending+0x27)[0x7effd7885307] /nix/store/v2n1kfxk63p6ypwv3yi9yjp676hcsdyj-gtk+3-3.22.26/lib/libgtk-3.so.0(gtk_events_pending+0xd)[0x7effd943336d] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4c374f] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4f8c09] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x4f8ff5] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x5cbb87] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x57cbe4] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x5cdd04] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x5cdfab] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x5ceada] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x441507] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x44c848] /nix/store/4znykvnf1xyflhq9z7albfb910xpl4i4-emacs-25.3/bin/.emacs-wrapped[0x44f538] ... aborted All software that Emacs 25.3.1 depends on, with versions: glibc-2.26-75 util-linux-2.31 libffi-3.2.1 lz4-131 xz-5.2.3 libgpg-error-1.27 libgcrypt-1.8.1 libcap-2.25-lib systemd-234-lib bash-4.4-p12 libICE-1.0.9 libSM-1.2.2 libXau-1.0.8 libXdmcp-1.1.2 libxcb-1.12 libX11-1.6.5 dbus-1.10.24-lib gcc-6.4.0-lib zlib-1.2.11 pcre-8.41 glib-2.54.2 expat-2.2.5 libdaemon-0.14 avahi-0.7 gmp-6.1.2 ncurses-6.0-20171125 gobject-introspection-1.54.1 libXfixes-5.0.2 libXrender-0.9.10 libXcursor-1.1.15 nettle-3.4 openssl-1.0.2n libevent-2.1.8 unbound-1.6.7-lib libtasn1-4.12 dns-root-data-2017-10-24 libunistring-0.9.8 p11-kit-0.23.7 gnutls-3.6.1 libXpm-3.5.12 gsettings-desktop-schemas-3.24.1 dejavu-fonts-minimal-2.37 bzip2-1.0.6.0.1 libpng-apng-1.6.34 freetype-2.7.1 fontconfig-2.12.1-lib atk-2.26.1 libXft-2.3.2 libXext-1.3.3 libXinerama-1.1.3 libXrandr-1.5.1 libjpeg-turbo-1.5.3 libtiff-4.0.8 libxml2-2.9.7 wayland-1.14.0 graphite2-1.3.6 libpciaccess-0.14 libdrm-2.4.88 libXxf86vm-1.1.4 libXdamage-1.1.4 libxshmfence-1.2 mesa-noglu-17.2.7 pixman-0.34.0 harfbuzz-1.7.1 cairo-1.14.10 pango-1.40.14 dconf-0.26.1-lib libcroco-0.6.12 jasper-2.0.14 gdk-pixbuf-2.36.7 librsvg-2.40.19 libungif-4.1.4 gettext-0.19.8 epoxy-1.3.1 recordproto-1.14.2 libXi-1.7.9 libXtst-1.2.3 at-spi2-core-2.26.2 at-spi2-atk-2.26.1 libXcomposite-0.4.4 xkeyboard-config-2.22 libxkbcommon-0.7.2 cups-2.2.6-lib gtk+3-3.22.26 libselinux-2.4 emacs-25.3 --- I also have Noto Emoji font installed, not sure if that changes the issue. Perhaps this is only ever reproducible when there is some font containing the glyph. I'm not sure if I should file this against GNOME bug tracker, but the fact that there is a symbol that causes Emacs to crash might be used as a denial of service attack in some contexts (e.g. sending someone an email, knowing that recipient uses Gnus), and knowing that seems to be important. Recompiling Emacs without GTK+3 fixes the issue: GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, Xaw scroll bars) of 2018-01-09
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