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bug#4078: 23.1; Forcibly breaking 'emacsclient -c' X connections can cra
|
From: |
Nelson Elhage |
|
Subject: |
bug#4078: 23.1; Forcibly breaking 'emacsclient -c' X connections can crash emacs. |
|
Date: |
Fri, 7 Aug 2009 18:50:14 -0400 (EDT) |
Steps to reproduce:
(1) Run 'emacs --daemon' or 'emacs -nw'
(2) M-x server-start
(3) Run 'emacsclient -c'
(4) Run 'xkill' and click on the Emacs X window
(5) Run 'emacsclient -c' again
Expected behavior:
Another emacs X window pops up.
Observed behavior:
* A window pops up, but remains blank and non-responsive.
* The 'emacs -nw' window outputs an infinite stream of
(process:11200): GLib-WARNING (recursed) **: g_main_context_prepare() called
recursively from within a source's check() or prepare() member
At this point, 'emacsclient -t' still works properly, and killing the
new '-c' session seems to usually stop the GLib spew.
I captured a backtrace of emacs, interrupted while it was spewing that
warning endlessly. I appear to have caught it while logging the error,
so hopefully the stack is relevant. This is 100% reproducible for me,
so I can happily provide other stack traces if they would be useful.
---------- CUT HERE ----------
#0 0xb7f32430 in __kernel_vsyscall ()
No symbol table info available.
#1 0xb776d053 in __write_nocancel () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#2 0xb77bc306 in write_string (fd=2, string=0x8de0360 "\n(emacs:19202):
GLib-WARNING **: g_main_context_check() called recursively from within a
source's check() or prepare() member.\n") at
/build/buildd/glib2.0-2.20.1/glib/gmessages.c:130
No locals.
#3 0xb77bc78c in IA__g_log_default_handler (log_domain=0xb77ecf06 "GLib",
log_level=<value optimized out>, message=0x8fbd018 "g_main_context_check()
called recursively from within a source's check() or prepare() member.",
unused_data=0x0) at /build/buildd/glib2.0-2.20.1/glib/gmessages.c:959
level_prefix = "WARNING
**\000\004\000\000\000(\ufffd\204\ufffd\ufffdW}\ufffd$\ufffd\204\ufffd\004*\177\ufffd\ufffd\ufffd\204\ufffd&\ufffd{\ufffd\030\ufffd\ufffd\b\ufffd\227\ufffd\b"
string = (gchar *) 0x8de0360 "\n(emacs:19202): GLib-WARNING **:
g_main_context_check() called recursively from within a source's check() or
prepare() member.\n"
gstring = (GString *) 0x8e1d5d0
fd = 2
#4 0xb77bcb3f in IA__g_logv (log_domain=0xb77ecf06 "GLib",
log_level=G_LOG_LEVEL_WARNING, format=0xb77f2a04 "g_main_context_check() called
recursively from within a source's check() or prepare() member.",
args1=0xbf84e2dc
"\ufffd\ufffd\202\ufffd\u0422Q\b`\ufffd[\b\030\ufffd\204\ufffd2E{\ufffd\234\ufffd\204\ufffd4\ufffd\204\ufffdo\ufffd9\ufffdTC{\ufffd\002")
at /build/buildd/glib2.0-2.20.1/glib/gmessages.c:483
depth = 1
domain = <value optimized out>
data = (gpointer) 0x0
log_func = (GLogFunc) 0xb77bc480 <IA__g_log_default_handler>
domain_fatal_mask = 5
test_level = G_LOG_LEVEL_WARNING
was_recursion = 0
i = <value optimized out>
#5 0xb77bcee6 in IA__g_log (log_domain=0xb77ecf06 "GLib",
log_level=G_LOG_LEVEL_WARNING, format=0xb77f2a04 "g_main_context_check() called
recursively from within a source's check() or prepare() member.") at
/build/buildd/glib2.0-2.20.1/glib/gmessages.c:526
No locals.
#6 0xb77b561e in IA__g_main_context_check (context=0x851a2d0,
max_priority=-1216652197, fds=0x8f62c00, n_fds=0) at
/build/buildd/glib2.0-2.20.1/glib/gmain.c:2264
source = <value optimized out>
pollrec = <value optimized out>
n_ready = <value optimized out>
i = <value optimized out>
#7 0xb77b5fdd in g_main_context_iterate (context=0x851a2d0, block=0,
dispatch=0, self=0x84f92e8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2445
max_priority = -1216652197
timeout = 0
some_ready = <value optimized out>
nfds = 0
allocated_nfds = <value optimized out>
fds = (GPollFD *) 0x8f62c00
__PRETTY_FUNCTION__ = "g_main_context_iterate"
#8 0xb77b6361 in IA__g_main_context_pending (context=0x851a2d0) at
/build/buildd/glib2.0-2.20.1/glib/gmain.c:2476
retval = <value optimized out>
#9 0xb7c936a1 in IA__gtk_events_pending () at
/build/buildd/gtk+2.0-2.16.1/gtk/gtkmain.c:1283
result = <value optimized out>
#10 0x080e1b25 in XTread_socket (terminal=0x85ba560, expected=1,
hold_quit=0xbf84e6f4) at xterm.c:7263
count = 0
#11 0x08124a0e in read_avail_input (expected=1) at keyboard.c:7093
nr = <value optimized out>
hold_quit = {
kind = NO_EVENT,
code = 0,
part = scroll_bar_above_handle,
modifiers = 0,
x = 0,
y = 0,
timestamp = 0,
padding = {0x0, 0x0},
frame_or_window = 0,
arg = 0
}
next = (struct terminal *) 0x85aaa60
nread = 0
err = 0
t = (struct terminal *) 0x85ba560
#12 0x08124b1a in handle_async_input () at keyboard.c:7335
nread = 126
#13 0x08124ce4 in process_pending_signals () at keyboard.c:7351
No locals.
#14 0x081c56ad in wait_reading_process_output (time_limit=30, microsecs=0,
read_kbd=-1, do_display=1, wait_for_cell=137932057, wait_proc=0x0,
just_wait_proc=0) at process.c:4566
timeout_reduced_for_timers = 0
channel = 6
nfds = 1
Available = {
fds_bits = {256, 0 <repeats 31 times>}
}
Connecting = {
fds_bits = {0 <repeats 32 times>}
}
check_connect = 0
check_delay = 0
no_avail = 6
xerrno = 4
proc = 0
timeout = {
tv_sec = 27,
tv_usec = 359730
}
end_time = {
tv_sec = 1249684951,
tv_usec = 389145
}
wait_channel = -1
got_some_input = 1
#15 0x08057908 in sit_for (timeout=240, reading=1, do_display=1) at
dispnew.c:6644
sec = 30
usec = 0
#16 0x08127477 in read_char (commandflag=1, nmaps=2, maps=0xbf84eda0,
prev_event=137932057, used_mouse_menu=0xbf84ee50, end_time=0x0) at
keyboard.c:2950
tem0 = <value optimized out>
delay_level = 30
buffer_size = <value optimized out>
c = 137932057
local_getcjmp = {{
__jmpbuf = {2, 138810852, 1, -1081807528, -837355840, -485490769},
__mask_was_saved = 0,
__saved_mask = {
__val = {1, 3756253275, 4294967295, 3213159564, 138845896, 3213159784,
135802329, 137961409, 8, 138845900, 0, 0, 0, 0, 0, 0, 0, 0, 139142245,
138270520, 138943313, 3213159656, 135762616, 138943313, 137932057, 137932057,
0, 0, 0, 0, 138943313, 138943313}
}
}}
save_jump = {{
__jmpbuf = {2, 138810852, 1, -1081807528, -837355840, -485490769},
__mask_was_saved = 0,
__saved_mask = {
__val = {1, 3756253275, 4294967295, 3213159564, 138845896, 3213159784,
135802329, 137961409, 8, 138845900, 3213159312, 3213159316, 3, 137887744,
3756253275, 137932057, 141166576, 138852921, 139142245, 138270520, 138943313,
3213159656, 135762616, 138943313, 137932057, 137932057, 0, 8192, 0, 0,
138943313, 138943313}
}
}}
key_already_recorded = 0
tem = 0
save = <value optimized out>
previous_echo_area_message = 137932057
also_record = 137932057
reread = 0
polling_stopped_here = <value optimized out>
orig_kboard = (struct kboard *) 0x85699d8
#17 0x08128a32 in read_key_sequence (keybuf=0xbf84ef04, bufsize=30,
prompt=137932057, dont_downcase_last=0, can_return_switch_frame=1,
fix_current_buffer=1) at keyboard.c:9460
interrupted_kboard = (KBOARD *) 0x85699d8
key = 137957916
used_mouse_menu = 0
echo_local_start = 0
last_real_key_start = 0
keys_local_start = 0
local_first_binding = 0
from_string = 137932057
count = 2
t = 0
echo_start = 0
keys_start = 0
nmaps = 2
nmaps_allocated = 2
defs = (Lisp_Object * volatile) 0xbf84ed80
submaps = (Lisp_Object * volatile) 0xbf84eda0
orig_local_map = 140836941
orig_keymap = 137932057
localized_local_map = 0
first_binding = 0
first_unbound = 31
mock_input = 0
fkey = {
parent = 138253677,
map = 138253677,
start = 0,
end = 0
}
keytran = {
parent = 137925501,
map = 137925501,
start = 0,
end = 0
}
indec = {
parent = 138253685,
map = 138253685,
start = 0,
end = 0
}
shift_translated = 0
delayed_switch_frame = 137932057
original_uppercase = 32
original_uppercase_position = -1
starting_buffer = (struct buffer *) 0x8391218
fake_prefixed_keys = 137932057
#18 0x0812a693 in command_loop_1 () at keyboard.c:1642
cmd = <value optimized out>
lose = 138474920
nonundocount = 0
keybuf = {137932105, -1081807034, 137932057, 0, 137932057, -1081806968,
135413816, 140940237, -1081807034, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1081807004,
-1081807168, 0, -65536, 137932057, 138888001, -538714021, 0, 138474920,
138474904, -538714021}
i = 138474920
prev_modiff = 0
prev_buffer = (struct buffer *) 0x0
already_adjusted = 0
#19 0x08188870 in internal_condition_case (bfun=0x812a4b0 <command_loop_1>,
handlers=137975193, hfun=0x8123f50 <cmd_error>) at eval.c:1512
val = <value optimized out>
c = {
tag = 137932057,
val = 137932057,
next = 0xbf84f0b0,
gcpro = 0x0,
jmp = {{
__jmpbuf = {0, 138474920, 138474904, -1081806728, -836790592,
-154085969},
__mask_was_saved = 0,
__saved_mask = {
__val = {3086286836, 3070294640, 30, 3213160180, 3086205101, 140035264,
3213160092, 3074280011, 3075268596, 3075273024, 3086270536, 3213160128,
3074295222, 276967387, 3076992320, 8655230, 59, 3213160784, 3213160492,
3213160784, 3213160632, 135485316, 2, 3213160644, 3213160492, 0, 0, 0, 0, 0, 0,
0}
}
}},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 1,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
h = {
handler = 137975193,
var = 137932057,
chosen_clause = 137932105,
tag = 0xbf84ef9c,
next = 0x0
}
#20 0x081234a5 in command_loop_2 () at keyboard.c:1359
val = 126
#21 0x0818894a in internal_catch (tag=137971217, func=0x8123480
<command_loop_2>, arg=137932057) at eval.c:1248
c = {
tag = 137971217,
val = 137932057,
next = 0x0,
gcpro = 0x0,
jmp = {{
__jmpbuf = {0, 138474920, 138474904, -1081806472, -836634944,
-153956945},
__mask_was_saved = 0,
__saved_mask = {
__val = {0, 0, 0, 0, 0, 3075273192, 3075152686, 3075159464, 3075146958,
3075146778, 0, 0, 0, 3075273080, 177, 22, 0, 1, 139572448, 0, 138172384,
138170690, 137957912, 3213160808, 135764507, 138172385, 138170690, 137932057,
137957912, 137932081, 138170688, 0}
}
}},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 1,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
#22 0x08123d9f in command_loop () at keyboard.c:1338
No locals.
#23 0x0812415b in recursive_edit_1 () at keyboard.c:953
val = <value optimized out>
#24 0x081242a4 in Frecursive_edit () at keyboard.c:1015
buffer = 137932057
#25 0x08119ee7 in main (argc=3, argv=0xbf84f584) at emacs.c:1852
dummy = 140221632
stack_bottom_variable = 8 '\b'
do_initial_setlocale = 1
skip_args = 1
rlim = {
rlim_cur = 8388608,
rlim_max = 18446744073709551615
}
no_loadup = 0
junk = 0x0
dname_arg = 0x0
---------- END CUT ----------
In GNU Emacs 23.1.1 (i686-pc-linux-gnu, GTK+ Version 2.16.1)
of 2009-07-30 on phanatique
Windowing system distributor `The X.Org Foundation', version 11.0.10600000
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default-enable-multibyte-characters: t
Major mode: Python
Minor modes in effect:
diff-auto-refine-mode: t
iswitchb-mode: t
shell-dirtrack-mode: t
display-battery-mode: t
display-time-mode: t
window-number-mode: t
tooltip-mode: t
mouse-wheel-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
global-auto-composition-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
column-number-mode: t
line-number-mode: t
Recent input:
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <down-mouse-4>
<mouse-4> <double-down-mouse-4> <double-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <help-echo> <down-mouse-4> <mouse-4>
<down-mouse-4> <mouse-4> <down-mouse-4> <mouse-4> <down-mouse-4>
<mouse-4> <double-down-mouse-4> <double-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <down-mouse-4> <mouse-4> <down-mouse-4>
<mouse-4> <down-mouse-4> <mouse-4> <double-down-mouse-4>
<double-mouse-4> <down-mouse-4> <mouse-4> <down-mouse-4>
<mouse-4> <double-down-mouse-4> <double-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <triple-down-mouse-4> <triple-mouse-4>
<triple-down-mouse-4> <triple-mouse-4> <triple-down-mouse-4>
<triple-mouse-4> <down-mouse-5> <mouse-5> <down-mouse-5>
<mouse-5> <down-mouse-4> <mouse-4> M-v C-c 3 M-v C-l
C-n C-n C-e C-p C-p C-p C-p C-p C-p C-p C-c 1 C-s r
e a d P l a n C-s C-n C-s r e a d I n i t P l a n C-s
C-g C-c 2 C-c 3 C-a C-e C-c ` C-g C-g C-c 1 M-v C-l
C-v C-c 3 C-v C-l <return> C-/ M-v C-v C-v C-v C-v
C-l <down-mouse-4> <mouse-4> <down-mouse-4> <mouse-4>
<down-mouse-4> <mouse-4> <double-down-mouse-4> <double-mouse-4>
<down-mouse-4> <mouse-4> <double-down-mouse-4> <double-mouse-4>
<down-mouse-4> <mouse-4> C-n C-n C-n C-c 1 M-< C-s
U p d a t e C-n C-c 2 C-x b m a <return> M-< C-s U
I <backspace> p d a t e C-s C-s C-s C-s C-s C-s C-s
C-s C-s C-s C-s C-s C-s C-s C-n C-x 0 C-x + M-x r e
p o r SPC b <backspace> e m <tab> b <tab> <return>
C-g M-x s e r v e r SPC s t <tab> <M-backspace> <M-backspace>
k i l l <tab> C-g M-p M-x M-p <return>
Recent messages:
Quit
Mark set [2 times]
Mark saved where search started [3 times]
Quit [3 times]
Undo!
Mark set
Mark saved where search started
Mark set
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