I can recreate this bug in emacs -Q. Here is my build info. Emacs version: GNU Emacs 25.0.93.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.23) of 2016-05-02, built using commit ec554d7741d2ff2828ecaa437cc26a6e615f1319. ./configure options: --with-modules --prefix=/home/kmodi/usr_local/apps/6/emacs/emacs-25 'CPPFLAGS=-fgnu89-inline -I/home/kmodi/usr_local/6/include -I/usr/include/freetype2 -I/usr/include' 'CFLAGS=-ggdb3 -O0' 'CXXFLAGS=-ggdb3 -O0' 'LDFLAGS=-L/home/kmodi/usr_local/6/lib -L/home/kmodi/usr_local/6/lib64 -ggdb3' PKG_CONFIG_PATH=/home/kmodi/usr_local/6/lib/pkgconfig:/home/kmodi/usr_local/6/lib64/pkgconfig:/cad/adi/apps/gnu/linux/x86_64/6/lib/pkgconfig:/cad/adi/apps/gnu/linux/x86_64/6/lib64/pkgconfig:/usr/lib/pkgconfig:/usr/lib64/pkgconfig:/usr/share/pkgconfig:/lib/pkgconfig:/lib64/pkgconfig Features: XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK2 X11 MODULES I don't know exactly at what point the backtrace is useful. But here is the backtrace I got after I got control back in gdb after hitting C-g multiple times in emacs while it was frozen: Breakpoint 3, Fsignal (error_symbol=51600, data=27738611) at eval.c:1471 1471 = (NILP (error_symbol) ? Fcar (data) : error_symbol); (gdb) condition 3 error_symbol!=49824 && error_symbol!=51600 (gdb) c Continuing. Breakpoint 3, Fsignal (error_symbol=39024, data=0) at eval.c:1471 1471 = (NILP (error_symbol) ? Fcar (data) : error_symbol); (gdb) p error_symbol $5 = 39024 (gdb) xsymbol $6 = (struct Lisp_Symbol *) 0xc851a0 "quit" (gdb) bt #0 Fsignal (error_symbol=39024, data=0) at eval.c:1471 #1 0x00000000005f3372 in process_quit_flag () at eval.c:1446 #2 0x00000000005f5fc2 in Ffuncall (nargs=5, args=0x7fffffff7c70) at eval.c:2631 #3 0x00000000005f5df1 in call4 (fn=23280, arg1=19812949, arg2=44832, arg3=44832, arg4=44832) at eval.c:2577 #4 0x0000000000427f6c in frame_windows_min_size (frame=19812949, horizontal=44832, ignore=44832, pixelwise=44832) at frame.c:329 #5 0x0000000000428226 in adjust_frame_size (f=0x12e5250, new_width=1128, new_height=750, inhibit=5, pretend=false, parameter=13200) at frame.c:420 #6 0x0000000000425f3e in change_frame_size_1 (f=0x12e5250, new_width=1128, new_height=750, pretend=false, delay=false, safe=true, pixelwise=true) at dispnew.c:5513 #7 0x0000000000425f93 in change_frame_size (f=0x12e5250, new_width=1128, new_height=750, pretend=false, delay=false, safe=true, pixelwise=true) at dispnew.c:5545 #8 0x0000000000425d6f in do_pending_window_change (safe=true) at dispnew.c:5471 #9 0x000000000045a417 in redisplay_internal () at xdisp.c:13588 #10 0x000000000045bcb3 in redisplay_preserve_echo_area (from_where=12) at xdisp.c:14283 #11 0x0000000000649e83 in wait_reading_process_output (time_limit=30, nsecs=0, read_kbd=-1, do_display=true, wait_for_cell=0, wait_proc=0x0, just_wait_proc=0) at process.c:5066 #12 0x00000000004266ef in sit_for (timeout=122, reading=true, display_option=1) at dispnew.c:5762 #13 0x000000000055d9b3 in read_char (commandflag=1, map=29145331, prev_event=0, used_mouse_menu=0x7fffffff9a1f, end_time=0x0) at keyboard.c:2706 #14 0x000000000056a2d9 in read_key_sequence (keybuf=0x7fffffff9bd0, bufsize=30, prompt=0, dont_downcase_last=false, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:9055 #15 0x000000000055a8a9 in command_loop_1 () at keyboard.c:1357 #16 0x00000000005f2f86 in internal_condition_case (bfun=0x55a49f , handlers=19056, hfun=0x559c89 ) at eval.c:1309 #17 0x000000000055a1a7 in command_loop_2 (ignore=0) at keyboard.c:1099 #18 0x00000000005f28a6 in internal_catch (tag=46224, func=0x55a17e , arg=0) at eval.c:1074 #19 0x000000000055a147 in command_loop () at keyboard.c:1078 #20 0x0000000000559858 in recursive_edit_1 () at keyboard.c:684 #21 0x00000000005599eb in Frecursive_edit () at keyboard.c:755 #22 0x00000000005578aa in main (argc=2, argv=0x7fffffffa068) at emacs.c:1606 Lisp Backtrace: "redisplay_internal (C function)" (0x0) (gdb) -- -- Kaushal Modi