Re: gnus makes emacs lose response

[Kim F. Storm]

Here is an interesting backtrace from Leon:

It is hanging (C-g not working) with gnus-demon called
from a timer.  

So I suppose he is using gnus-asynchronous.

Would someone pls. investigate this.


On Sun, 03/09/06 22:19 +0100, Kim F. Storm wrote:

> leon <address@hidden> writes:
>
>> I have applied the patch to the latest emacs-unicode-2 branch. I see no
>> difference.

The patch in question is this tiny patch from Stefan:

    --- orig/src/process.c
    +++ mod/src/process.c
    @@ -4255,6 +4256,9 @@
       FD_ZERO (&Connecting);
    #endif
    
    +  if (time_limit == 0 && PROCESSP (read_kbd) && !NILP (Vinhibit_quit))
    +    error ("Blocking call to accept-process-output with quit inhibited!!");
    +
       /* If wait_proc is a process to watch, set wait_channel accordingly.  */
       if (wait_proc != NULL)
         wait_channel = XINT (wait_proc->infd);
    

>> emacs still loses reponse and won't be able to restore to normal.
>
> And it doesn't respond to C-g ??

No.

>
>> I have compiled emacs with --enable-debug so if you need more debug info,
>> let me know.
>
> Can you run it under GDB and interrupt it when it is hanging and then
> look at a backtrace to see where it is hanging.

(gdb) bt
#0  0x00b79248 in ___newselect_nocancel () from /lib/libc.so.6
#1  0x08194325 in select_wrapper (n=-514, rfd=0x0, wfd=0xbfcbe478, xfd=0x0, 
    tmo=0xbfcbe5a8) at process.c:4188
#2  0x081975e3 in wait_reading_process_output (time_limit=0, microsecs=100000, 
    read_kbd=0, do_display=0, wait_for_cell=137562313, wait_proc=0xac4b208, 
    just_wait_proc=0) at process.c:4560
#3  0x08199535 in Faccept_process_output (process=180662796, seconds=0, 
    millisec=800, just_this_one=137562313) at process.c:3929
#4  0x081660a1 in Ffuncall (nargs=4, args=0xbfcbe6a0) at eval.c:2992
#5  0x0819103a in Fbyte_code (bytestr=178229091, vector=178231668, maxdepth=56)
    at bytecode.c:679
#6  0x08165aea in funcall_lambda (fun=178231796, nargs=1, 
    arg_vector=0xbfcbe7d4) at eval.c:3169
#7  0x08165ef1 in Ffuncall (nargs=2, args=0xbfcbe7d0) at eval.c:3039
#8  0x0819103a in Fbyte_code (bytestr=180188931, vector=180193340, maxdepth=40)
    at bytecode.c:679
#9  0x08165aea in funcall_lambda (fun=180193524, nargs=1, 
    arg_vector=0xbfcbe904) at eval.c:3169
#10 0x08165ef1 in Ffuncall (nargs=2, args=0xbfcbe900) at eval.c:3039
#11 0x0819103a in Fbyte_code (bytestr=180188979, vector=180193588, maxdepth=48)
    at bytecode.c:679
#12 0x08165aea in funcall_lambda (fun=180193756, nargs=0, 
    arg_vector=0xbfcbea34) at eval.c:3169
#13 0x08165ef1 in Ffuncall (nargs=1, args=0xbfcbea30) at eval.c:3039
#14 0x0819103a in Fbyte_code (bytestr=180130171, vector=180131756, maxdepth=64)
    at bytecode.c:679
#15 0x081655a5 in Feval (form=178650061) at eval.c:2319
#16 0x08164bda in internal_catch (tag=137879609, func=0x81651e0 <Feval>, 
    arg=178650061) at eval.c:1210
#17 0x08190213 in Fbyte_code (bytestr=180130155, vector=180132140, maxdepth=16)
    at bytecode.c:854
#18 0x081655a5 in Feval (form=178650021) at eval.c:2319
#19 0x08167b5f in internal_lisp_condition_case (var=137562313, 
    bodyform=178650021, handlers=178726805) at eval.c:1414
#20 0x0819032d in Fbyte_code (bytestr=180130123, vector=180132268, maxdepth=32)
    at bytecode.c:869
#21 0x081655a5 in Feval (form=178649109) at eval.c:2319
#22 0x08164bda in internal_catch (tag=180098369, func=0x81651e0 <Feval>, 
    arg=178649109) at eval.c:1210
#23 0x08190213 in Fbyte_code (bytestr=180126643, vector=180132356, maxdepth=24)
    at bytecode.c:854
#24 0x08165aea in funcall_lambda (fun=180132548, nargs=2, 
    arg_vector=0xbfcbf124) at eval.c:3169
#25 0x08165ef1 in Ffuncall (nargs=3, args=0xbfcbf120) at eval.c:3039
#26 0x0819103a in Fbyte_code (bytestr=171316339, vector=177631276, maxdepth=56)
    at bytecode.c:679
#27 0x08165aea in funcall_lambda (fun=142210388, nargs=2, 
    arg_vector=0xbfcbf254) at eval.c:3169
#28 0x08165ef1 in Ffuncall (nargs=3, args=0xbfcbf250) at eval.c:3039
#29 0x0819103a in Fbyte_code (bytestr=140306195, vector=139585188, maxdepth=48)
    at bytecode.c:679
#30 0x08165aea in funcall_lambda (fun=139585356, nargs=2, 
    arg_vector=0xbfcbf384) at eval.c:3169
#31 0x08165ef1 in Ffuncall (nargs=3, args=0xbfcbf380) at eval.c:3039
#32 0x0819103a in Fbyte_code (bytestr=141543491, vector=139584628, maxdepth=72)
    at bytecode.c:679
#33 0x08165aea in funcall_lambda (fun=139585124, nargs=2, 
    arg_vector=0xbfcbf460) at eval.c:3169
#34 0x08165ce6 in apply_lambda (fun=139585124, args=171439901, eval_flag=1)
    at eval.c:3093
#35 0x081653c2 in Feval (form=170540757) at eval.c:2355
#36 0x08167b5f in internal_lisp_condition_case (var=137562313, 
    bodyform=170540757, handlers=170540085) at eval.c:1414
#37 0x0819032d in Fbyte_code (bytestr=141543811, vector=177674908, maxdepth=40)
    at bytecode.c:869
#38 0x08165aea in funcall_lambda (fun=177675100, nargs=0, 
    arg_vector=0xbfcbf764) at eval.c:3169
#39 0x08165ef1 in Ffuncall (nargs=1, args=0xbfcbf760) at eval.c:3039
#40 0x0819103a in Fbyte_code (bytestr=140992715, vector=140994924, maxdepth=24)
    at bytecode.c:679
#41 0x08165aea in funcall_lambda (fun=142487924, nargs=0, 
    arg_vector=0xbfcbf884) at eval.c:3169
#42 0x08165ef1 in Ffuncall (nargs=1, args=0xbfcbf880) at eval.c:3039
#43 0x0819103a in Fbyte_code (bytestr=181723363, vector=182785316, maxdepth=8)
    at bytecode.c:679
#44 0x081655a5 in Feval (form=181649869) at eval.c:2319
#45 0x08167b5f in internal_lisp_condition_case (var=137562313, 
    bodyform=181649869, handlers=181649645) at eval.c:1414
#46 0x0819032d in Fbyte_code (bytestr=181723379, vector=146709364, maxdepth=64)
    at bytecode.c:869
#47 0x08165aea in funcall_lambda (fun=146709548, nargs=0, 
    arg_vector=0xbfcbfc48) at eval.c:3169
#48 0x08165ef1 in Ffuncall (nargs=1, args=0xbfcbfc44) at eval.c:3039
#49 0x08167768 in Fapply (nargs=2, args=0xbfcbfc44) at eval.c:2411
#50 0x08166215 in Ffuncall (nargs=3, args=0xbfcbfc40) at eval.c:2963
#51 0x0819103a in Fbyte_code (bytestr=136629355, vector=136629380, maxdepth=32)
    at bytecode.c:679
#52 0x081655a5 in Feval (form=136629341) at eval.c:2319
#53 0x08167b5f in internal_lisp_condition_case (var=137562313, 
    bodyform=136629341, handlers=136629413) at eval.c:1414
#54 0x0819032d in Fbyte_code (bytestr=136629211, vector=136629228, maxdepth=40)
    at bytecode.c:869
#55 0x08165aea in funcall_lambda (fun=136629172, nargs=1, 
    arg_vector=0xbfcbff74) at eval.c:3169
#56 0x08165ef1 in Ffuncall (nargs=2, args=0xbfcbff70) at eval.c:3039
#57 0x08167359 in call1 (fn=137591681, arg1=146720244) at eval.c:2767
#58 0x08106aa6 in timer_check (do_it_now=1) at keyboard.c:4519
#59 0x08106cb9 in readable_events (flags=1) at keyboard.c:3544
#60 0x08106d27 in get_input_pending (addr=0x831e320, flags=1)
    at keyboard.c:6638
#61 0x08106e00 in detect_input_pending_run_timers (do_display=1)
    at keyboard.c:10014
#62 0x081971a6 in wait_reading_process_output (time_limit=0, microsecs=0, 
    read_kbd=-1, do_display=1, wait_for_cell=137562313, wait_proc=0x0, 
    just_wait_proc=0) at process.c:4663
#63 0x0810a1f5 in read_char (commandflag=1, nmaps=7, maps=0xbfcc05d0, 
    prev_event=137562313, used_mouse_menu=0xbfcc0688, end_time=0x0)
    at keyboard.c:3980
#64 0x0810c726 in read_key_sequence (keybuf=0xbfcc0734, bufsize=30, 
    prompt=137562313, dont_downcase_last=0, can_return_switch_frame=1, 
    fix_current_buffer=1) at keyboard.c:8917
#65 0x0810e1e3 in command_loop_1 () at keyboard.c:1538
#66 0x08164b22 in internal_condition_case (bfun=0x810e050 <command_loop_1>, 
    handlers=137600937, hfun=0x8108c90 <cmd_error>) at eval.c:1469
#67 0x081080b3 in command_loop_2 () at keyboard.c:1329
#68 0x08164bda in internal_catch (tag=137594921, 
    func=0x8108090 <command_loop_2>, arg=137562313) at eval.c:1210
#69 0x08108acc in command_loop () at keyboard.c:1308
#70 0x08108e6a in recursive_edit_1 () at keyboard.c:1006
#71 0x08108f57 in Frecursive_edit () at keyboard.c:1067
#72 0x080fefe2 in main (argc=3, argv=0xbfcc0e34) at emacs.c:1814

Lisp Backtrace:
"accept-process-output" (0xac4b20c)
"nnheader-accept-process-output" (0xac4b20c)
"nntp-accept-process-output" (0xac4b20c)
"nntp-accept-response" (0x350)
"byte-code" (0xabc917b)
"byte-code" (0xabc916b)
"byte-code" (0xabc914b)
"nntp-retrieve-groups" (0xad3bc7d)
"gnus-retrieve-groups" (0xad3bc7d)
"gnus-read-active-file-2" (0xad3bc7d)
"gnus-read-active-file-1" (0xa69d4fd)
"gnus-read-active-file" (0x83308c9)
"gnus-group-get-new-news" (0x2a)
"byte-code" (0xad4e0e3)
"gnus-demon" (0x83308c9)
"apply" (0xabbfc71)
"byte-code" (0x824cc6b)
"timer-event-handler" (0x8bec5f4)
(gdb)

(gdb) bt full
#0  0x00b79248 in ___newselect_nocancel () from /lib/libc.so.6
No symbol table info available.
#1  0x08194325 in select_wrapper (n=-514, rfd=0x0, wfd=0xbfcbe478, xfd=0x0, 
    tmo=0xbfcbe5a8) at process.c:4188
No locals.
#2  0x081975e3 in wait_reading_process_output (time_limit=0, microsecs=100000, 
    read_kbd=0, do_display=0, wait_for_cell=137562313, wait_proc=0xac4b208, 
    just_wait_proc=0) at process.c:4560
        usecs = <value optimized out>
        timeout_reduced_for_timers = 0
        channel = 0
        nfds = 0
        Available = {
  fds_bits = {389248, 0 <repeats 31 times>}
}
        Connecting = {
  fds_bits = {0 <repeats 32 times>}
}
        check_connect = 0
        check_delay = 0
        no_avail = 0
        xerrno = 0
        proc = <value optimized out>
        timeout = {
  tv_sec = 0, 
  tv_usec = 40000
}
        end_time = {
  tv_sec = 1157323517, 
  tv_usec = 457274
}
        wait_channel = 12
        got_some_input = 0
#3  0x08199535 in Faccept_process_output (process=180662796, seconds=0, 
    millisec=800, just_this_one=137562313) at process.c:3929
        carry = <value optimized out>
        secs = 0
        usecs = 100000
#4  0x081660a1 in Ffuncall (nargs=4, args=0xbfcbe6a0) at eval.c:2992
        fun = <value optimized out>
        original_fun = 4
        funcar = <value optimized out>
        numargs = 3
        val = <value optimized out>
        backtrace = {
  next = 0xbfcbe798, 
  function = 0xbfcbe6a0, 
  args = 0xbfcbe6a4, 
  nargs = 3, 
  evalargs = 0 '\0', 
  debug_on_exit = 0 '\0'
}
        internal_args = (Lisp_Object *) 0xbfcbe630
        i = <value optimized out>
#5  0x0819103a in Fbyte_code (bytestr=178229091, vector=178231668, maxdepth=56)
    at bytecode.c:679
        v1 = <value optimized out>
        v2 = <value optimized out>
        op = dwarf2_read_address: Corrupted DWARF expression.

Lisp Backtrace:
"accept-process-output" (0xac4b20c)
"nnheader-accept-process-output" (0xac4b20c)
"nntp-accept-process-output" (0xac4b20c)
"nntp-accept-response" (0x350)
"byte-code" (0xabc917b)
"byte-code" (0xabc916b)
"byte-code" (0xabc914b)
"nntp-retrieve-groups" (0xad3bc7d)
"gnus-retrieve-groups" (0xad3bc7d)
"gnus-read-active-file-2" (0xad3bc7d)
"gnus-read-active-file-1" (0xa69d4fd)
"gnus-read-active-file" (0x83308c9)
"gnus-group-get-new-news" (0x2a)
"byte-code" (0xad4e0e3)
"gnus-demon" (0x83308c9)
"apply" (0xabbfc71)
"byte-code" (0x824cc6b)
"timer-event-handler" (0x8bec5f4)
(gdb)