SIGBUS in Vim 7.4

I am on Ubuntu 16.04 and Vim gets killed fairly regularly (maybe once
a week?) Last time it happened I went through the effort of setting
up vim to dump core instead of just leaving me with an empty console
after crashing. I now have the coredump!

The vim version is reported as:

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Apr 08 2016 11:38:28) [25/1416]
Included patches: 1-1689
Modified by pkg-vim-maintainers@lists.alioth.debian.org
Compiled by pkg-vim-maintainers@lists.alioth.debian.org
Huge version with GTK2-GNOME GUI. Features included (+) or not (-):
+acl +farsi +mouse_netterm +tag_binary
+arabic +file_in_path +mouse_sgr +tag_old_static
+autocmd +find_in_path -mouse_sysmouse -tag_any_white
+balloon_eval +float +mouse_urxvt +tcl
+browse +folding +mouse_xterm +terminfo
++builtin_terms -footer +multi_byte +termresponse
+byte_offset +fork() +multi_lang +textobjects
+channel +gettext -mzscheme +timers
+cindent -hangul_input +netbeans_intg +title
+clientserver +iconv +packages +toolbar
+clipboard +insert_expand +path_extra +user_commands
+cmdline_compl +job +perl +vertsplit
+cmdline_hist +jumplist +persistent_undo +virtualedit
+cmdline_info +keymap +postscript +visual
+comments +langmap +printer +visualextra
+conceal +libcall +profile +viminfo
+cryptv +linebreak -python +vreplace
+cscope +lispindent +python3 +wildignore
+cursorbind +listcmds +quickfix +wildmenu
+cursorshape +localmap +reltime +windows
+dialog_con_gui +lua +rightleft +writebackup
+diff +menu +ruby +X11
+digraphs +mksession +scrollbind -xfontset
+dnd +modify_fname +signs +xim
-ebcdic +mouse +smartindent +xsmp_interact
+emacs_tags +mouseshape +startuptime +xterm_clipboard
+eval +mouse_dec +statusline -xterm_save
+ex_extra +mouse_gpm -sun_workshop +xpm
+extra_search -mouse_jsbterm +syntax
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
2nd user vimrc file: "~/.vim/vimrc"
user exrc file: "$HOME/.exrc"
system gvimrc file: "$VIM/gvimrc"
user gvimrc file: "$HOME/.gvimrc"
2nd user gvimrc file: "~/.vim/gvimrc"
system menu file: "$VIMRUNTIME/menu.vim"
fall-back for $VIM: "/usr/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK -pthread -I/usr/include/gtk-2.0
-I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo
-I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I
/usr/include/libpng12 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng12 -I/usr/include/pang
o-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/x86_6
4-linux-gnu/glib-2.0/include -I/usr/include/freetype2 -D_REENTRANT -DORBIT2=1 -pthread -I/usr/i
nclude/libgnomeui-2.0 -I/usr/include/gnome-keyring-1 -I/usr/include/libbonoboui-2.0 -I/usr/incl
ude/libxml2 -I/usr/include/libgnome-2.0 -I/usr/include/libbonobo-2.0 -I/usr/include/bonobo-acti
vation-2.0 -I/usr/include/orbit-2.0 -I/usr/include/libgnomecanvas-2.0 -I/usr/include/gail-1.0 -
I/usr/include/libart-2.0 -I/usr/include/gtk-2.0 -I/usr/lib/x86_64-linux-gnu/gtk-2.0/include -I/
usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/atk-1.0
-I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/libpng12 -I/usr/include/pango-1.0 -
I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/include/gdk-pix
buf-2.0 -I/usr/include/libpng12 -I/usr/include/gnome-vfs-2.0 -I/usr/lib/x86_64-linux-gnu/gnome-
vfs-2.0/include -I/usr/include/gconf/2 -I/usr/include/dbus-1.0 -I/usr/lib/x86_64-linux-gnu/dbus
-1.0/include -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -Wdate-time
-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -U_FORTIFY_SOURCE -D_FOR
TIFY_SOURCE=1
Linking: gcc -L. -Wl,-Bsymbolic-functions -Wl,-z,relro -fstack-protector -rdynamic -Wl,-expor
t-dynamic -Wl,-E -Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -
o vim -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2
.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lfontconfig -lfreetype -lgnomeui-2 -lS
M -lICE -lbonoboui-2 -lgnome-2 -lpopt -lbonobo-2 -lbonobo-activation -lORBit-2 -lgnomecanvas-2
-lart_lgpl_2 -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgio-2.0 -lpangoft
2-1.0 -lpango-1.0 -lfontconfig -lfreetype -lgdk_pixbuf-2.0 -lgnomevfs-2 -lgconf-2 -lgthread-2.0
-lgmodule-2.0 -lgobject-2.0 -lglib-2.0 -lSM -lICE -lXpm -lXt -lX11 -lXdmcp -lSM -lICE -lm -lt
info -lnsl -lselinux -lacl -lattr -lgpm -ldl -L/usr/lib -llua5.2 -Wl,-E -fstack-protector-s
trong -L/usr/local/lib -L/usr/lib/x86_64-linux-gnu/perl/5.22/CORE -lperl -ldl -lm -lpthread -l
crypt -L/usr/lib/python3.5/config-3.5m-x86_64-linux-gnu -lpython3.5m -lpthread -ldl -lutil -lm
-L/usr/lib/x86_64-linux-gnu -ltcl8.6 -ldl -lz -lpthread -lieee -lm -lruby-2.3 -lpthread -lgmp
-ldl -lcrypt -lm

Here is the backtrace from the coredump:

Program terminated with signal SIGBUS, Bus error.
#0 0x00007fa650515757 in kill () at ../sysdeps/unix/syscall-template.S:84
84 ../sysdeps/unix/syscall-template.S: No such file or directory.
[Current thread is 1 (Thread 0x7fa65557ca80 (LWP 38810))]
(gdb) bt
#0 0x00007fa650515757 in kill () at ../sysdeps/unix/syscall-template.S:84
#1 0x0000555fad98c273 in may_core_dump () at os_unix.c:3297
#2 0x0000555fad98dd20 in may_core_dump () at os_unix.c:3266
#3 mch_exit (r=1) at os_unix.c:3263
#4 <signal handler called>
#5 in_id_list (cur_si=<optimized out>, cur_si@entry=0x555fb0591700, list=0x6578655f3931313e,
ssp=ssp@entry=0x555faf7497a0, contained=0) at syntax.c:6193
#6 0x0000555fad9fb902 in syn_current_attr (syncing=syncing@entry=0,
displaying=displaying@entry=0, can_spell=can_spell@entry=0x0,
keep_state=keep_state@entry=0) at syntax.c:2090
#7 0x0000555fad9fc1b4 in syn_finish_line (syncing=syncing@entry=0) at syntax.c:1781
#8 0x0000555fad9fcd3f in syn_finish_line (syncing=0) at syntax.c:758
#9 syntax_start (wp=0x555faf633720, lnum=3250) at syntax.c:536
#10 0x0000555fad9fcf45 in syn_get_foldlevel (wp=0x555faf633720, lnum=lnum@entry=3250)
at syntax.c:6546
#11 0x0000555fad9167e9 in foldlevelSyntax (flp=0x7ffe2b90beb0) at fold.c:3222
#12 0x0000555fad917fe8 in foldUpdateIEMSRecurse (gap=gap@entry=0x555faf633828,
level=level@entry=1, startlnum=startlnum@entry=1, flp=flp@entry=0x7ffe2b90beb0,
getlevel=getlevel@entry=0x555fad9167a0 <foldlevelSyntax>, bot=bot@entry=7532, topflags=2)
at fold.c:2652
#13 0x0000555fad918dbf in foldUpdateIEMS (bot=7532, top=1, wp=0x555faf633720) at fold.c:2292
#14 foldUpdate (wp=wp@entry=0x555faf633720, top=top@entry=1, bot=bot@entry=2147483647)
at fold.c:835
#15 0x0000555fad919123 in checkupdate (wp=wp@entry=0x555faf633720) at fold.c:1187
#16 0x0000555fad91936a in checkupdate (wp=0x555faf633720) at fold.c:217
#17 hasFoldingWin (win=0x555faf633720, lnum=5591, firstp=0x555faf633798,
lastp=lastp@entry=0x0, cache=cache@entry=1, infop=infop@entry=0x0) at fold.c:158
#18 0x0000555fad91942e in hasFolding (lnum=<optimized out>, firstp=<optimized out>,
lastp=lastp@entry=0x0) at fold.c:133
#19 0x0000555fad959c3e in update_topline () at move.c:291
#20 0x0000555fad9118ee in buf_reload (buf=buf@entry=0x555faf25e210,
orig_mode=orig_mode@entry=33204) at fileio.c:7155
#21 0x0000555fad911d0c in buf_check_timestamp (buf=buf@entry=0x555faf25e210,
focus=focus@entry=1) at fileio.c:6997
#22 0x0000555fad912422 in check_timestamps (focus=1) at fileio.c:6664
#23 0x0000555fada1091b in ui_focus_change (in_focus=<optimized out>) at ui.c:3203
#24 0x0000555fad91fd96 in vgetc () at getchar.c:1670
#25 0x0000555fad920019 in safe_vgetc () at getchar.c:1801
#26 0x0000555fad96e775 in normal_cmd (oap=0x7ffe2b90c440, toplevel=1) at normal.c:627
#27 0x0000555fada5d665 in main_loop (cmdwin=0, noexmode=0) at main.c:1359
#28 0x0000555fad88d21d in main (argc=<optimized out>, argv=<optimized out>) at main.c:1051

I am willing to attempt building a newer Vim, but in my experience
that can be a bit of a bear, and if any of my many, many plugins stop
working, I expect that I won't be able to keep going on with it.

I am happy to run gdb commands on the coredump, but I cannot send it
as I was editing work code at the time, and besides it's 125 megs.

Let me know how to proceed.

--
fREW Schmidt
https://blog.afoolishmanifesto.com

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