* bug#8162: 23.3; Crash with invalid default-process-coding-system value
@ 2011-03-03 10:20 YAMAMOTO Mitsuharu
2011-03-03 11:25 ` Eli Zaretskii
0 siblings, 1 reply; 8+ messages in thread
From: YAMAMOTO Mitsuharu @ 2011-03-03 10:20 UTC (permalink / raw)
To: 8162
Steps to reproduce:
1. $ emacs -Q
2. M-x shell RET
3. M-: (setq default-process-coding-system '(dummy . utf-8-unix)) RET
4. C-u M-x shell RET RET
5. RET (in the *shell*<2> buffer)
Result:
Crash with SIGSEGV at process.c:5737
Vlast_coding_system_used = CODING_ID_NAME (coding->id);
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
In GNU Emacs 23.3.1 (i686-pc-linux-gnu, GTK+ Version 2.20.1)
of 2011-03-03 on mituharu-laptop
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
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: ja_JP.UTF-8
value of $XMODIFIERS: @im=ibus
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
(gdb) bt full
#0 0x0822a0f7 in send_process (proc=143844101, buf=0x8a2677c "\n", len=1,
object=142046297)
at /home/mituharu/src/bzr/emacs/emacs-23/src/process.c:5737
p = 0x892e300
rv = -1073750152
coding = 0x0
gcpro1 = {
next = 0x0,
var = 0x0,
nvars = 0
}
old_sigpipe = 0x860c85c
#1 0x0822ab06 in Fprocess_send_string (process=143844101, string=142046297)
at /home/mituharu/src/bzr/emacs/emacs-23/src/process.c:6039
proc = 143844101
#2 0x081dd068 in Ffuncall (nargs=3, args=0xbfffe040)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3034
fun = 138439245
original_fun = 138885578
funcar = 140560476
numargs = 2
lisp_numargs = 0
val = 135772097
backtrace = {
next = 0xbfffe2ac,
function = 0xbfffe040,
args = 0xbfffe044,
nargs = 2,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffe044
i = 288
#3 0x0821e3e4 in Fbyte_code (bytestr=144666305, vector=144667301, maxdepth=12)
at /home/mituharu/src/bzr/emacs/emacs-23/src/bytecode.c:680
count = 17
op = 2
vectorp = 0x89f72a8
bytestr_length = 37
stack = {
pc = 0x8915ab4 "\207",
top = 0xbfffe048,
bottom = 0xbfffe040,
byte_string = 144666305,
byte_string_start = 0x8915a90 "\b\203\035",
constants = 144667301,
next = 0xbfffe34c
}
top = 0xbfffe040
result = 144860984
#4 0x081dd870 in funcall_lambda (fun=144623045, nargs=2,
arg_vector=0xbfffe314)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3220
val = 138746354
syms_left = 138746354
next = 138786730
count = 15
i = 2
optional = 0
rest = 0
#5 0x081dd26d in Ffuncall (nargs=3, args=0xbfffe310)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3077
fun = 144623045
original_fun = 144070570
funcar = -1073747004
numargs = 2
lisp_numargs = -1073749256
val = 138746354
backtrace = {
next = 0xbfffe57c,
function = 0xbfffe310,
args = 0xbfffe314,
nargs = 2,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffebc4
i = -1073748508
#6 0x0821e3e4 in Fbyte_code (bytestr=144102945, vector=144104117, maxdepth=12)
at /home/mituharu/src/bzr/emacs/emacs-23/src/bytecode.c:680
count = 14
op = 2
vectorp = 0x896dab8
bytestr_length = 32
stack = {
pc = 0x8915910 "\210)\b\205\037",
top = 0xbfffe318,
bottom = 0xbfffe310,
byte_string = 144102945,
byte_string_start = 0x8915900 "\b\203\b",
constants = 144104117,
next = 0xbfffe63c
}
top = 0xbfffe310
result = 138746354
#7 0x081dd870 in funcall_lambda (fun=144104261, nargs=2,
arg_vector=0xbfffe5e4)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3220
val = 138746354
syms_left = 138746354
next = 138786730
count = 12
i = 2
optional = 0
rest = 0
#8 0x081dd26d in Ffuncall (nargs=3, args=0xbfffe5e0)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3077
fun = 144104261
original_fun = 144075690
funcar = 144075666
numargs = 2
lisp_numargs = -1073748536
val = 224
backtrace = {
next = 0xbfffe86c,
function = 0xbfffe5e0,
args = 0xbfffe5e4,
nargs = 2,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffebc4
i = 224
#9 0x0821e3e4 in Fbyte_code (bytestr=144552785, vector=144495917, maxdepth=40)
at /home/mituharu/src/bzr/emacs/emacs-23/src/bytecode.c:680
count = 6
op = 2
vectorp = 0x89cd530
bytestr_length = 374
stack = {
pc = 0x8915288 "\210)\016.\203o\001\016/\204o\001\016*\016)Z\036\060\332\b!\203\066\001\016*\016\060\\dV\203\066\001\333\334\313\016)d\016\060Z\313\016*d&\006!\204\023\001\016*\016\060\\dX\203n\001\333\334\313\016)\016*\313\016*\211\016\060\\&\006!\203n\001\316\036\061\016*\211\016\060\\|\210\016\062\203m\001\212\016*b\210\335 \210)))\322\336\337\",)\207",
top = 0xbfffe5e8,
bottom = 0xbfffe5e0,
byte_string = 144552785,
byte_string_start = 0x8915188 "\306p!\211\030\204\016",
constants = 144495917,
next = 0x0
}
top = 0xbfffe5e0
result = 139111386
#10 0x081dd870 in funcall_lambda (fun=144626981, nargs=0,
arg_vector=0xbfffe904)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3220
val = 138746354
syms_left = 138746354
next = 143807898
count = 4
i = 0
optional = 1
rest = 0
#11 0x081dd26d in Ffuncall (nargs=1, args=0xbfffe900)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3077
fun = 144626981
original_fun = 144091866
funcar = 138746354
numargs = 0
lisp_numargs = 0
val = 0
backtrace = {
next = 0xbfffeb5c,
function = 0xbfffe900,
args = 0xbfffe904,
nargs = 0,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffebc4
i = 108
#12 0x081dcb06 in apply1 (fn=144091866, arg=138746354)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:2772
ret_ungc_val = 0
gcpro1 = {
next = 0x84519f2,
var = 0xbfffe8f8,
nvars = -1931403520
}
#13 0x081d6fc1 in Fcall_interactively (function=144091866,
record_flag=138746354, keys=138780461)
at /home/mituharu/src/bzr/emacs/emacs-23/src/callint.c:396
input = 138746354
args = 0x0
visargs = 0x0
specs = 138746354
filter_specs = 138746354
teml = 0
up_event = 138746354
enable = 138746354
speccount = 3
next_event = 0
prefix_arg = 138746354
string = 0x0
tem = 0x0
varies = 0x0
i = 108
j = 108
count = 0
foo = 0
prompt1 = '\000' <repeats 53 times>, " ", '\000' <repeats 45 times>
tem1 = 0x0
arg_from_tty = 0
gcpro1 = {
next = 0x84c619a,
var = 0x84519f2,
nvars = 138746354
}
gcpro2 = {
next = 0x0,
var = 0x0,
nvars = 3
}
gcpro3 = {
next = 0x81e5088,
var = 0x8544a76,
nvars = 0
}
gcpro4 = {
next = 0x3,
var = 0x84519f2,
nvars = 16
}
gcpro5 = {
next = 0x0,
var = 0xbfffe8a8,
nvars = 136173701
}
key_count = 1
record_then_fail = 0
save_this_command = 144091866
save_last_command = 139904170
save_this_original_command = 144091866
save_real_this_command = 144091866
#14 0x081dd092 in Ffuncall (nargs=4, args=0xbfffebc0)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3037
fun = 138432677
original_fun = 138866674
funcar = 0
numargs = 3
lisp_numargs = 0
val = 0
backtrace = {
next = 0x0,
function = 0xbfffebc0,
args = 0xbfffebc4,
nargs = 3,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffebc4
i = 136145913
#15 0x081dcc09 in call3 (fn=138866674, arg1=144091866, arg2=138746354,
arg3=138746354) at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:2857
ret_ungc_val = 144626981
gcpro1 = {
next = 0x84519f2,
var = 0x8459282,
nvars = 4
}
args = {138866674, 144091866, 138746354, 138746354}
#16 0x08169279 in Fcommand_execute (cmd=144091866, record_flag=138746354,
keys=138746354, special=138746354)
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:10562
final = 144626981
tem = 138746354
prefixarg = 138746354
#17 0x0815b6d1 in command_loop_1 ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1906
scount = 2
cmd = 144091866
lose = -1208090024
keybuf = {52, 136813638, -1073746928, 136817849, 1, 138746354,
138746354, 136813641, 138838586, -1931403520, -1208090624,
-1073807358, -1073746760, 135634595, 143989358, 138746402,
-1073746726, 138855394, -1073746644, 1150886, 0, 142379896, 0,
-1073745120, -1073746664, 135634150, 143989358, -1073746726, 0,
138746354}
i = 1
prev_modiff = 1
prev_buffer = 0x8a00910
already_adjusted = 0
#18 0x081daa0f in internal_condition_case (bfun=0x815a22f <command_loop_1>,
handlers=138784170, hfun=0x8159bed <cmd_error>)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:1492
val = 138993790
c = {
tag = 138746354,
val = 138746354,
next = 0xbfffee58,
gcpro = 0x0,
jmp = {{
__jmpbuf = {0, -1073745556, -1073745852, -1073746408,
-2108170138, 1189008137},
__mask_was_saved = 0,
__saved_mask = {
__val = {0, 0, 0, 3221220396, 13729485, 0, 13319968, 0,
3221220880, 3221220808, 3221220820, 134547493, 1231096, 0,
3086877272, 3221159938, 134546495, 134545765, 3086905992,
1228788, 13285836, 37, 3221220588, 1150886, 138668800,
138668928, 3221221124, 13303296, 3086906080, 2, 4294967295,
1228788}
}
}},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 1,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
h = {
handler = 138784170,
var = 138746354,
chosen_clause = 138746402,
tag = 0xbfffed30,
next = 0x0
}
#19 0x08159f85 in command_loop_2 ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1362
val = 0
#20 0x081da51b in internal_catch (tag=138781242,
func=0x8159f60 <command_loop_2>, arg=138746354)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:1228
c = {
tag = 138781242,
val = 138746354,
next = 0x0,
gcpro = 0x0,
jmp = {{
__jmpbuf = {-1073745120, -1073745556, -1073745852, -1073746136,
-2108612506, 1187494153},
__mask_was_saved = 0,
__saved_mask = {
__val = {0 <repeats 16 times>, 13719982, 0, 0, 0, 138911483,
3221221160, 136078979, 138913674, 138911483, 138746354,
138772064, 141188884, 136754599, 14, 22, 192}
}
}},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 1,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
#21 0x08159f3e in command_loop ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1341
No locals.
#22 0x0815980c in recursive_edit_1 ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:956
count = 1
val = -1073745992
#23 0x08159977 in Frecursive_edit ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1018
count = 0
buffer = 138746354
#24 0x08158155 in main (argc=2, argv=0xbffff3c4)
at /home/mituharu/src/bzr/emacs/emacs-23/src/emacs.c:1833
dummy = -1073745128
stack_bottom_variable = 8 '\b'
do_initial_setlocale = 1
skip_args = 0
rlim = {
rlim_cur = 8388608,
rlim_max = 18446744073709551615
}
no_loadup = 0
junk = 0x0
dname_arg = 0x0
Lisp Backtrace:
"process-send-string" (0xbfffe044)
"comint-send-string" (0xbfffe314)
"comint-simple-send" (0xbfffe5e4)
"comint-send-input" (0xbfffe904)
"call-interactively" (0xbfffebc4)
^ permalink raw reply [flat|nested] 8+ messages in thread* bug#8162: 23.3; Crash with invalid default-process-coding-system value
2011-03-03 10:20 bug#8162: 23.3; Crash with invalid default-process-coding-system value YAMAMOTO Mitsuharu
@ 2011-03-03 11:25 ` Eli Zaretskii
2011-03-03 12:38 ` Kenichi Handa
0 siblings, 1 reply; 8+ messages in thread
From: Eli Zaretskii @ 2011-03-03 11:25 UTC (permalink / raw)
To: YAMAMOTO Mitsuharu; +Cc: 8162
> Date: Thu, 03 Mar 2011 19:20:15 +0900
> From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
> Cc:
>
> Steps to reproduce:
>
> 1. $ emacs -Q
> 2. M-x shell RET
> 3. M-: (setq default-process-coding-system '(dummy . utf-8-unix)) RET
> 4. C-u M-x shell RET RET
> 5. RET (in the *shell*<2> buffer)
>
> Result:
>
> Crash with SIGSEGV at process.c:5737
Don't you see an error message regarding an invalid coding-system,
before you type the last RET (which causes the crash)?
set-process-coding-system signals an error when it sees the `dummy'
part, but comint.el does nothing about that. It should kill the shell
buffer it just created, IMO.
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#8162: 23.3; Crash with invalid default-process-coding-system value
2011-03-03 11:25 ` Eli Zaretskii
@ 2011-03-03 12:38 ` Kenichi Handa
2011-03-03 13:14 ` Eli Zaretskii
2011-03-05 20:17 ` Chong Yidong
0 siblings, 2 replies; 8+ messages in thread
From: Kenichi Handa @ 2011-03-03 12:38 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 8162
In article <E1Pv6fH-0003zX-AI@fencepost.gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:
> > Date: Thu, 03 Mar 2011 19:20:15 +0900
> > From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
> > Cc:
> >
> > Steps to reproduce:
> >
> > 1. $ emacs -Q
> > 2. M-x shell RET
> > 3. M-: (setq default-process-coding-system '(dummy . utf-8-unix)) RET
> > 4. C-u M-x shell RET RET
> > 5. RET (in the *shell*<2> buffer)
> >
> > Result:
> >
> > Crash with SIGSEGV at process.c:5737
> Don't you see an error message regarding an invalid coding-system,
> before you type the last RET (which causes the crash)?
> set-process-coding-system signals an error when it sees the `dummy'
> part, but comint.el does nothing about that. It should kill the shell
> buffer it just created, IMO.
But, at least, a process associated with the shell buffer
must be killed when an error occurs in Fstart_process.
Actually, that function has this code:
/* If an error occurs and we can't start the process, we want to
remove it from the process list. This means that each error
check in create_process doesn't need to call remove_process
itself; it's all taken care of here. */
record_unwind_protect (start_process_unwind, proc);
and the "Invalid coding system" error is caused in
create_process called near the end of Fstart_process.
The reason why start_process_unwind doesn't kill the process
is that create_process sets XPROCESS (process)->pid to -1
too late; i.e. after set_process_coding_system (which
signals an error) is called.
The attached patch (against emacs-23 branch) will fix this
bug. Perhaps "XPROCESS (process)->pid = -1" should be done
much earlier because an error may be signaled before, but,
I'm not sure. deactivate_process may not handle such
situation well.
By the way, as Emacs 23.2 also had this bug, strictly
speaking, the fix is not for regression. Should I install
it for emacs-23 or for emacs-24?
---
Kenichi Handa
handa@m17n.org
2011-03-03 Kenichi Handa <handa@m17n.org>
* process.c (create_process): Call setup_process_coding_systems
after the pid of the process is set to -1.
=== modified file 'src/process.c'
--- src/process.c 2011-01-02 23:50:46 +0000
+++ src/process.c 2011-03-03 12:30:28 +0000
@@ -1999,7 +1999,6 @@
XPROCESS (process)->pty_flag = pty_flag;
XPROCESS (process)->status = Qrun;
- setup_process_coding_systems (process);
/* Delay interrupts until we have a chance to store
the new fork's pid in its process structure */
@@ -2046,6 +2045,10 @@
processes to get their return values scrambled. */
XPROCESS (process)->pid = -1;
+ /* This must be called after the above line because it may signal an
+ error. */
+ setup_process_coding_systems (process);
+
BLOCK_INPUT;
{
^ permalink raw reply [flat|nested] 8+ messages in thread* bug#8162: 23.3; Crash with invalid default-process-coding-system value
2011-03-03 12:38 ` Kenichi Handa
@ 2011-03-03 13:14 ` Eli Zaretskii
2011-03-04 0:33 ` YAMAMOTO Mitsuharu
2011-03-04 0:37 ` Kenichi Handa
2011-03-05 20:17 ` Chong Yidong
1 sibling, 2 replies; 8+ messages in thread
From: Eli Zaretskii @ 2011-03-03 13:14 UTC (permalink / raw)
To: Kenichi Handa; +Cc: 8162
> From: Kenichi Handa <handa@m17n.org>
> Cc: mituharu@math.s.chiba-u.ac.jp, 8162@debbugs.gnu.org
> Date: Thu, 03 Mar 2011 21:38:52 +0900
>
> > set-process-coding-system signals an error when it sees the `dummy'
> > part, but comint.el does nothing about that. It should kill the shell
> > buffer it just created, IMO.
>
> But, at least, a process associated with the shell buffer
> must be killed when an error occurs in Fstart_process.
Killing the buffer will also kill the process, won't it?
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#8162: 23.3; Crash with invalid default-process-coding-system value
2011-03-03 13:14 ` Eli Zaretskii
@ 2011-03-04 0:33 ` YAMAMOTO Mitsuharu
2011-03-04 0:37 ` Kenichi Handa
1 sibling, 0 replies; 8+ messages in thread
From: YAMAMOTO Mitsuharu @ 2011-03-04 0:33 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 8162
>>>>> On Thu, 03 Mar 2011 08:14:48 -0500, Eli Zaretskii <eliz@gnu.org> said:
>>> set-process-coding-system signals an error when it sees the
>>> `dummy' part, but comint.el does nothing about that. It should
>>> kill the shell buffer it just created, IMO.
>>
>> But, at least, a process associated with the shell buffer must be
>> killed when an error occurs in Fstart_process.
> Killing the buffer will also kill the process, won't it?
Without Handa-san's patch, killing the *shell*<2> buffer caused
another crash.
1. $ emacs -Q
2. M-x shell RET
3. M-: (setq default-process-coding-system '(dummy . utf-8-unix)) RET
4. C-u M-x shell RET RET
5. C-x k RET yes RET
(2-4 can be replaced with:
2'. (setq explicit-shell-file-name "/bin/csh") C-j
3'. (setq default-process-coding-system '(dummy . utf-8-unix)) C-j
4'. M-x shell RET
)
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
(gdb) bt full
#0 0x0012d422 in __kernel_vsyscall ()
No symbol table info available.
#1 0x00cd2926 in kill () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2 0x0822ae30 in process_send_signal (process=144646877, signo=1,
current_group=138746354, nomsg=1)
at /home/mituharu/src/bzr/emacs/emacs-23/src/process.c:6325
proc = 144646877
p = 0x0
gid = 0
no_pgrp = 0
#3 0x0822baba in kill_buffer_processes (buffer=144655189)
at /home/mituharu/src/bzr/emacs/emacs-23/src/process.c:6704
tail = 143990254
proc = 144646877
#4 0x0817aa9a in Fkill_buffer (buffer_or_name=142030913)
at /home/mituharu/src/bzr/emacs/emacs-23/src/buffer.c:1541
buffer = 144655189
b = 0x89f4350
tem = 138772069
m = 0x8457e65
gcpro1 = {
next = 0x87d0ce5,
var = 0x7,
nvars = 0
}
#5 0x081dd047 in Ffuncall (nargs=2, args=0xbfffe8e0)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3031
fun = 136797749
original_fun = 138864746
funcar = 135633819
numargs = 1
lisp_numargs = -1073747848
val = -1073745852
backtrace = {
next = 0xbfffeb5c,
function = 0xbfffe8e0,
args = 0xbfffe8e4,
nargs = 1,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffe8e4
i = 2
#6 0x081d889d in Fcall_interactively (function=138864746,
record_flag=138746354, keys=138780461)
at /home/mituharu/src/bzr/emacs/emacs-23/src/callint.c:869
val = 0
args = 0xbfffe8e0
visargs = 0xbfffe8c0
specs = 142037121
filter_specs = 142037121
teml = 138746354
up_event = 138746354
enable = 138746354
speccount = 3
next_event = 2
prefix_arg = 138746354
string = 0xbfffe900 "bKill buffer: "
tem = 0x8269994 ""
varies = 0xbfffe8a0
i = 2
j = 2
count = 1
foo = 0
prompt1 = "Kill buffer: ", '\000' <repeats 86 times>
tem1 = 0x0
arg_from_tty = 1
gcpro1 = {
next = 0x84c619a,
var = 0x84519f2,
nvars = 138746354
}
gcpro2 = {
next = 0x0,
var = 0x0,
nvars = 3
}
gcpro3 = {
next = 0x0,
var = 0x0,
nvars = 2
}
gcpro4 = {
next = 0x3,
var = 0x84519f2,
nvars = 2
}
gcpro5 = {
next = 0x0,
var = 0xbfffe8a8,
nvars = 136173701
}
key_count = 2
record_then_fail = 0
save_this_command = 138864746
save_last_command = 139904170
save_this_original_command = 138864746
save_real_this_command = 138864746
#7 0x081dd092 in Ffuncall (nargs=4, args=0xbfffebc0)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:3037
fun = 138432677
original_fun = 138866674
funcar = 0
numargs = 3
lisp_numargs = 0
val = 0
backtrace = {
next = 0x0,
function = 0xbfffebc0,
args = 0xbfffebc4,
nargs = 3,
evalargs = 0 '\000',
debug_on_exit = 0 '\000'
}
internal_args = 0xbfffebc4
i = 136145913
#8 0x081dcc09 in call3 (fn=138866674, arg1=138864746, arg2=138746354,
arg3=138746354) at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:2857
ret_ungc_val = 136797749
gcpro1 = {
next = 0x85498be,
var = 0x8459282,
nvars = 4
}
args = {138866674, 138864746, 138746354, 138746354}
#9 0x08169279 in Fcommand_execute (cmd=138864746, record_flag=138746354,
keys=138746354, special=138746354)
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:10562
final = 136797749
tem = 138746354
prefixarg = 138746354
#10 0x0815b6d1 in command_loop_1 ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1906
scount = 2
cmd = 138864746
lose = -1208090024
keybuf = {96, 428, -1073746928, 136817849, 1, 138746354, 138746354,
136813641, 138838586, -1096495616, -1208090624, -1073807358,
-1073746760, 135634595, 143990150, 138746402, -1073746726,
138855394, -1073746644, 1150886, 0, 142413024, 0, -1073745120,
-1073746664, 135634150, 143990150, -1073746726, 0, 138746354}
i = 2
prev_modiff = 1
prev_buffer = 0x89f4350
already_adjusted = 0
#11 0x081daa0f in internal_condition_case (bfun=0x815a22f <command_loop_1>,
handlers=138784170, hfun=0x8159bed <cmd_error>)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:1492
val = 138993790
c = {
tag = 138746354,
val = 138746354,
next = 0xbfffee58,
gcpro = 0x0,
jmp = {{
__jmpbuf = {0, -1073745556, -1073745852, -1073746408, 453675397,
-545015062},
__mask_was_saved = 0,
__saved_mask = {
__val = {0, 0, 0, 3221220396, 13729485, 0, 13319968, 0,
3221220880, 3221220808, 3221220820, 134547493, 1231096, 0,
3086877272, 3221159938, 134546495, 134545765, 3086905992,
1228788, 13285836, 37, 3221220588, 1150886, 138668800,
138668928, 3221221124, 13303296, 3086906080, 2, 4294967295,
1228788}
}
}},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 1,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
h = {
handler = 138784170,
var = 138746354,
chosen_clause = 138746402,
tag = 0xbfffed30,
next = 0x0
}
#12 0x08159f85 in command_loop_2 ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1362
val = 0
#13 0x081da51b in internal_catch (tag=138781242,
func=0x8159f60 <command_loop_2>, arg=138746354)
at /home/mituharu/src/bzr/emacs/emacs-23/src/eval.c:1228
c = {
tag = 138781242,
val = 138746354,
next = 0x0,
gcpro = 0x0,
jmp = {{
__jmpbuf = {-1073745120, -1073745556, -1073745852, -1073746136,
453790085, -543502102},
__mask_was_saved = 0,
__saved_mask = {
__val = {0 <repeats 16 times>, 13719982, 0, 0, 0, 138911483,
3221221160, 136078979, 138913674, 138911483, 138746354,
138772064, 141188884, 136754599, 14, 22, 192}
}
}},
backlist = 0x0,
handlerlist = 0x0,
lisp_eval_depth = 0,
pdlcount = 2,
poll_suppress_count = 1,
interrupt_input_blocked = 0,
byte_stack = 0x0
}
#14 0x08159f3e in command_loop ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1341
No locals.
#15 0x0815980c in recursive_edit_1 ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:956
count = 1
val = -1073745992
#16 0x08159977 in Frecursive_edit ()
at /home/mituharu/src/bzr/emacs/emacs-23/src/keyboard.c:1018
count = 0
buffer = 138746354
#17 0x08158155 in main (argc=2, argv=0xbffff3c4)
at /home/mituharu/src/bzr/emacs/emacs-23/src/emacs.c:1833
dummy = -1073745128
stack_bottom_variable = 8 '\b'
do_initial_setlocale = 1
skip_args = 0
rlim = {
rlim_cur = 8388608,
rlim_max = 18446744073709551615
}
no_loadup = 0
junk = 0x0
dname_arg = 0x0
Lisp Backtrace:
"kill-buffer" (0xbfffe8e4)
"call-interactively" (0xbfffebc4)
^ permalink raw reply [flat|nested] 8+ messages in thread* bug#8162: 23.3; Crash with invalid default-process-coding-system value
2011-03-03 13:14 ` Eli Zaretskii
2011-03-04 0:33 ` YAMAMOTO Mitsuharu
@ 2011-03-04 0:37 ` Kenichi Handa
1 sibling, 0 replies; 8+ messages in thread
From: Kenichi Handa @ 2011-03-04 0:37 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 8162
In article <E1Pv8Mi-0005w4-BM@fencepost.gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:
> > From: Kenichi Handa <handa@m17n.org>
> > Cc: mituharu@math.s.chiba-u.ac.jp, 8162@debbugs.gnu.org
> > Date: Thu, 03 Mar 2011 21:38:52 +0900
> >
> > > set-process-coding-system signals an error when it sees the `dummy'
> > > part, but comint.el does nothing about that. It should kill the shell
> > > buffer it just created, IMO.
> >
> > But, at least, a process associated with the shell buffer
> > must be killed when an error occurs in Fstart_process.
> Killing the buffer will also kill the process, won't it?
Killing the buffer tries to kill the process and that leads
to crash because the process is in insane state.
---
Kenichi Handa
handa@m17n.org
^ permalink raw reply [flat|nested] 8+ messages in thread
* bug#8162: 23.3; Crash with invalid default-process-coding-system value
2011-03-03 12:38 ` Kenichi Handa
2011-03-03 13:14 ` Eli Zaretskii
@ 2011-03-05 20:17 ` Chong Yidong
2011-08-14 17:51 ` Chong Yidong
1 sibling, 1 reply; 8+ messages in thread
From: Chong Yidong @ 2011-03-05 20:17 UTC (permalink / raw)
To: Stefan Monnier, Kenichi Handa; +Cc: 8162
Kenichi Handa <handa@m17n.org> writes:
> The attached patch (against emacs-23 branch) will fix this
> bug. Perhaps "XPROCESS (process)->pid = -1" should be done
> much earlier because an error may be signaled before, but,
> I'm not sure. deactivate_process may not handle such
> situation well.
>
> By the way, as Emacs 23.2 also had this bug, strictly
> speaking, the fix is not for regression. Should I install
> it for emacs-23 or for emacs-24?
This patch doesn't look at all safe. At the very least, if it's
included, we'd need another pretest. But I'm not inclined to include it
for 23.3. Although it's a crash, (i) both 23.1 and 23.2 have the same
bug, and (ii) the trigger seems quite unusual.
Stefan, WDYT?
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2011-08-14 17:51 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-03-03 10:20 bug#8162: 23.3; Crash with invalid default-process-coding-system value YAMAMOTO Mitsuharu
2011-03-03 11:25 ` Eli Zaretskii
2011-03-03 12:38 ` Kenichi Handa
2011-03-03 13:14 ` Eli Zaretskii
2011-03-04 0:33 ` YAMAMOTO Mitsuharu
2011-03-04 0:37 ` Kenichi Handa
2011-03-05 20:17 ` Chong Yidong
2011-08-14 17:51 ` Chong Yidong
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