FWIW, I also get this crash when opening one of my folders (nnimap) using Gnus that is shipped with Emacs. A more complete backtrace can be found below.
/Simon Fatal error 6: Aborted Thread 1 "emacs" received signal SIGABRT, Aborted. raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 50 ../sysdeps/unix/sysv/linux/raise.c: Filen eller katalogen finns inte. (gdb) bt #0 raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 0x00000000004f6f37 in terminate_due_to_signal (sig=sig@entry=6, backtrace_limit=backtrace_limit@entry=40) at ./debian/build-src/src/emacs.c:394 #2 0x0000000000511643 in emacs_abort () at ./debian/build-src/src/sysdep.c:2426 #3 0x00000000004574ea in redisplay_internal () at ./debian/build-src/src/lisp.h:2797 #4 0x0000000000459c22 in redisplay_preserve_echo_area (from_where=from_where@entry=13) at ./debian/build-src/src/xdisp.c:14630 #5 0x00000000005ab860 in Fdelete_process (process=61304133) at ./debian/build-src/src/process.c:1078 #6 0x00000000005b35f5 in kill_buffer_processes (buffer=buffer@entry=0) at ./debian/build-src/src/process.c:7836 #7 0x00000000004f6dfa in shut_down_emacs (sig=sig@entry=6, stuff=stuff@entry=0) at ./debian/build-src/src/lisp.h:855 #8 0x00000000004f6f63 in terminate_due_to_signal (sig=sig@entry=6, backtrace_limit=backtrace_limit@entry=40) at ./debian/build-src/src/lisp.h:855 #9 0x0000000000511643 in emacs_abort () at ./debian/build-src/src/sysdep.c:2426 #10 0x00000000004574ea in redisplay_internal () at ./debian/build-src/src/lisp.h:2797 #11 0x0000000000459c22 in redisplay_preserve_echo_area (from_where=from_where@entry=13) at ./debian/build-src/src/xdisp.c:14630 #12 0x00000000005ab860 in Fdelete_process (process=59467093) at ./debian/build-src/src/process.c:1078 #13 0x00000000005b35f5 in kill_buffer_processes (buffer=buffer@entry=0) at ./debian/build-src/src/process.c:7836 #14 0x00000000004f6d34 in shut_down_emacs (sig=sig@entry=0, stuff=stuff@entry=0) at ./debian/build-src/src/lisp.h:855 #15 0x00000000004c3efd in x_connection_closed (dpy=dpy@entry=0x2ae86c0, error_message=<optimized out>, error_message@entry=0x7fffffff5880 "X protocol error: BadLength (poly request too large or internal Xlib length error) on protocol request 139", ioerror=ioerror@entry=false) at ./debian/build-src/src/lisp.h:855 #16 0x00000000004c7d49 in x_error_quitter (display=0x2ae86c0, event=<optimized out>, event=<optimized out>) at ./debian/build-src/src/xterm.c:9904 #17 0x00000000004c7dcb in x_error_handler (display=0x2ae86c0, event=0x7fffffff5a40) at ./debian/build-src/src/xterm.c:9874 #18 0x00007ffff684b11a in _XError () from /lib/x86_64-linux-gnu/libX11.so.6 #19 0x00007ffff6848077 in ?? () from /lib/x86_64-linux-gnu/libX11.so.6 #20 0x00007ffff684811d in ?? () from /lib/x86_64-linux-gnu/libX11.so.6 #21 0x00007ffff6848a55 in _XEventsQueued () from /lib/x86_64-linux-gnu/libX11.so.6 #22 0x00007ffff683a7b7 in XPending () from /lib/x86_64-linux-gnu/libX11.so.6 #23 0x00007ffff70e420d in ?? () from /lib/x86_64-linux-gnu/libgdk-3.so.0 #24 0x00007ffff6bbd669 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #25 0x00007ffff6bbe06b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #26 0x00007ffff6bbe207 in g_main_context_pending () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #27 0x00007ffff73b2b9d in gtk_events_pending () from /lib/x86_64-linux-gnu/libgtk-3.so.0 #28 0x00000000004c4917 in XTread_socket (terminal=<optimized out>, hold_quit=0x7fffffff5d40) at ./debian/build-src/src/xterm.c:9142 #29 0x00000000004fe1c9 in gobble_input () at ./debian/build-src/src/keyboard.c:6910 #30 0x00000000004fe875 in handle_async_input () at ./debian/build-src/src/keyboard.c:7146 #31 process_pending_signals () at ./debian/build-src/src/keyboard.c:7160 #32 0x00000000005d8dd7 in xftfont_open (f=<optimized out>, entity=70284725, pixel_size=15) at ./debian/build-src/src/xftfont.c:391 #33 0x0000000000586aa4 in font_open_entity (f=0x1010c80 <bss_sbrk_buffer+6280288>, entity=70284725, pixel_size=15) at ./debian/build-src/src/font.c:2903 #34 0x00000000005db72a in fontset_find_font (fontset=fontset@entry=59386213, c=c@entry=9200, face=face@entry=0x41b9720, charset_id=charset_id@entry=-1, fallback=fallback@entry=true) at ./debian/build-src/src/lisp.h:855 #35 0x00000000005db9b1 in fontset_font (fontset=fontset@entry=59386213, c=c@entry=9200, face=face@entry=0x41b9720, id=-1) at ./debian/build-src/src/fontset.c:788 #36 0x00000000005dbcbc in face_for_char (f=0x1010c80 <bss_sbrk_buffer+6280288>, face=face@entry=0x41b9720, c=9200, pos=<optimized out>, object=<optimized out>) at ./debian/build-src/src/fontset.c:990 #37 0x0000000000448473 in FACE_FOR_CHAR (object=<optimized out>, pos=<optimized out>, character=<optimized out>, face=0x41b9720, f=<optimized out>) at ./debian/build-src/src/dispextern.h:1818 #38 get_next_display_element (it=it@entry=0x7fffffff87f0) at ./debian/build-src/src/xdisp.c:7303 #39 0x000000000044f698 in display_line (it=it@entry=0x7fffffff87f0, cursor_vpos=cursor_vpos@entry=0) at ./debian/build-src/src/xdisp.c:21409 #40 0x000000000045450b in try_window (window=window@entry=16919605, pos=..., flags=flags@entry=1) at ./debian/build-src/src/xdisp.c:17627 #41 0x0000000000467cdb in redisplay_window (window=16919605, just_this_one_p=just_this_one_p@entry=false) at ./debian/build-src/src/xdisp.c:17074 #42 0x000000000046ab7b in redisplay_window_0 (window=window@entry=16919605) at ./debian/build-src/src/xdisp.c:14831 #43 0x000000000056ce36 in internal_condition_case_1 (bfun=bfun@entry=0x46ab50 <redisplay_window_0>, arg=16919605, handlers=<optimized out>, hfun=hfun@entry=0x42f9b0 <redisplay_window_error>) at ./debian/build-src/src/eval.c:1356 #44 0x00000000004346c2 in redisplay_windows (window=16919605) at ./debian/build-src/src/xdisp.c:14811 #45 0x0000000000457d35 in redisplay_internal () at ./debian/build-src/src/xdisp.c:14300 #46 0x0000000000459bc5 in redisplay () at ./debian/build-src/src/xdisp.c:13518 #47 0x0000000000500ecf in read_char (commandflag=commandflag@entry=1, map=map@entry=69116419, prev_event=0, used_mouse_menu=used_mouse_menu@entry=0x7fffffffdd8b, end_time=end_time@entry=0x0) at ./debian/build-src/src/keyboard.c:2480 #48 0x00000000005049a0 in read_key_sequence (keybuf=keybuf@entry=0x7fffffffde80, prompt=prompt@entry=0, dont_downcase_last=dont_downcase_last@entry=false, can_return_switch_frame=can_return_switch_frame@entry=true, fix_current_buffer=fix_current_buffer@entry=true, prevent_redisplay=prevent_redisplay@entry=false, bufsize=30) at ./debian/build-src/src/keyboard.c:9147 --Type <RET> for more, q to quit, c to continue without paging-- Quit (gdb) q
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