Frequent hangs with 21.3.1.

Frequent hangs with 21.3.1.

[Gaute Strokkenes]

I'm experiencing extremely frequent (hourly) hangs with emacs 21.3.1
on Redhat GNU/Linux 9.  I suspect the problem is fixed in mainline
with this patch:

  http://savannah.gnu.org/cgi-bin/viewcvs/emacs/emacs/src/alloc.c.diff?r1=1.328&r2=1.329

Can anyone confirm that this is the likely cause of the hangs?  I've
appended a gdb backtrace.  The session is still around in case anyone
is interested.

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This GDB was configured as "i686-pc-linux-gnu".
(gdb) attach 17086
Attaching to process 17086
Reading symbols from /med/cama03/local/store/cama03/.emacs/ver-21.3/bin/emacs@386linuxlibc63...done.
Reading symbols from /local/X11R6/lib/libXaw.so.7...done.
Loaded symbols for /local/X11R6/lib/libXaw.so.7
Reading symbols from /local/X11R6/lib/libXmu.so.6...done.
Loaded symbols for /local/X11R6/lib/libXmu.so.6
Reading symbols from /local/X11R6/lib/libXt.so.6...done.
Loaded symbols for /local/X11R6/lib/libXt.so.6
Reading symbols from /local/X11R6/lib/libSM.so.6...done.
Loaded symbols for /local/X11R6/lib/libSM.so.6
Reading symbols from /local/X11R6/lib/libICE.so.6...done.
Loaded symbols for /local/X11R6/lib/libICE.so.6
Reading symbols from /local/X11R6/lib/libXext.so.6...done.
Loaded symbols for /local/X11R6/lib/libXext.so.6
Reading symbols from /local/X11R6/lib/libXpm.so.4...done.
Loaded symbols for /local/X11R6/lib/libXpm.so.4
Reading symbols from /local/X11R6/lib/libX11.so.6...done.
Loaded symbols for /local/X11R6/lib/libX11.so.6
Reading symbols from /usr/lib/libncurses.so.5...done.
Loaded symbols for /usr/lib/libncurses.so.5
Reading symbols from /lib/tls/libm.so.6...done.
Loaded symbols for /lib/tls/libm.so.6
Reading symbols from /lib/tls/libc.so.6...done.
Loaded symbols for /lib/tls/libc.so.6
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libnss_compat.so.2...done.
Loaded symbols for /lib/libnss_compat.so.2
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libnss_nis.so.2...done.
Loaded symbols for /lib/libnss_nis.so.2
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /local/X11R6/lib/X11/locale/lib/common/xlcDef.so.2...done.
Loaded symbols for /local/X11R6/lib/X11/locale/lib/common/xlcDef.so.2
Reading symbols from /local/X11R6/lib/libXcursor.so.1.0...done.
Loaded symbols for /local/X11R6/lib/libXcursor.so.1.0
Reading symbols from /local/X11R6/lib/libXrender.so.1...done.
Loaded symbols for /local/X11R6/lib/libXrender.so.1
Reading symbols from /local/X11R6/lib/X11/locale/lib/common/ximcp.so.2...done.
Loaded symbols for /local/X11R6/lib/X11/locale/lib/common/ximcp.so.2
Reading symbols from /usr/lib/gconv/ISO8859-1.so...done.
Loaded symbols for /usr/lib/gconv/ISO8859-1.so
Reading symbols from /local/X11R6/lib/X11/locale/lib/common/xomGeneric.so.2...
done.
Loaded symbols for /local/X11R6/lib/X11/locale/lib/common/xomGeneric.so.2
Reading symbols from /lib/libnss_dns.so.2...done.
Loaded symbols for /lib/libnss_dns.so.2
Reading symbols from /lib/libresolv.so.2...done.
Loaded symbols for /lib/libresolv.so.2
0xffffe002 in ?? ()
(gdb) where
#0  0xffffe002 in ?? ()
#1  0x0810fa5b in emacs_blocked_malloc (size=28)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/alloc.c:732
#2  0x42073735 in malloc () from /lib/tls/libc.so.6
#3  0x40148e7a in _XRegisterFilterByType () from /local/X11R6/lib/libX11.so.6
#4  0x4047dc83 in _XimLocalSetFocus ()
   from /local/X11R6/lib/X11/locale/lib/common/ximcp.so.2
#5  0x401476b5 in XSetICFocus () from /local/X11R6/lib/libX11.so.6
#6  0x080b1f43 in XTread_socket (sd=0, bufp=0xbffd117c, numchars=4096, 
    expected=1)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/xterm.c:10697
#7  0x080d57e0 in read_avail_input (expected=1)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:6162
#8  0x080d5996 in input_available_signal (signo=29)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:6315
#9  <signal handler called>
#10 0x42074d33 in malloc_consolidate () from /lib/tls/libc.so.6
#11 0x42075c38 in mALLOPt () from /lib/tls/libc.so.6
#12 0x08110b25 in allocate_vectorlike (len=1108554272, type=MEM_TYPE_VECTOR)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/alloc.c:2226
#13 0x08110ba2 in allocate_vector (nslots=1)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/alloc.c:2254
#14 0x08110cbd in Fmake_vector (length=1, init=405207420)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/alloc.c:2350
#15 0x08110e17 in Fvector (nargs=1, args=0x8267d6c)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/alloc.c:2414
#16 0x080d0fe1 in read_char (commandflag=1, nmaps=5, maps=0xbfffd7b0, 
    prev_event=405207420, used_mouse_menu=0xbfffd808)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:2688
#17 0x080d7ba8 in read_key_sequence (keybuf=0xbfffd930, bufsize=30, 
    prompt=405207420, dont_downcase_last=0, can_return_switch_frame=1, 
    fix_current_buffer=1)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:8209
#18 0x080cf9eb in command_loop_1 ()
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:1451
#19 0x08122c16 in internal_condition_case (bfun=0x80cf814 <command_loop_1>, 
    handlers=405303764, hfun=0x80cf43c <cmd_error>)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/eval.c:1267
#20 0x080cf6ee in command_loop_2 ()
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:1245
#21 0x081227d1 in internal_catch (tag=33, func=0x80cf6d0 <command_loop_2>, 
    arg=405207420)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/eval.c:1030
#22 0x080cf6a4 in command_loop ()
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:1224
#23 0x080cf20c in recursive_edit_1 ()
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:950
#24 0x080cf328 in Frecursive_edit ()
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/keyboard.c:1006
#25 0x080cddbb in main (argc=1, argv=0xbfffdef4, envp=0xbfffdefc)
    at /local/store/storeslem/emacs/src-21.3-386linuxlibc63/src/emacs.c:1547
#26 0x42015704 in __libc_start_main () from /lib/tls/libc.so.6
(gdb) 

-- 
Gaute Strokkenes

Re: Frequent hangs with 21.3.1.

[Jan D.]

> I'm experiencing extremely frequent (hourly) hangs with emacs 21.3.1
> on Redhat GNU/Linux 9.  I suspect the problem is fixed in mainline
> with this patch:
>
>    
> http://savannah.gnu.org/cgi-bin/viewcvs/emacs/emacs/src/alloc.c.diff? 
> r1=1.328&r2=1.329
>
> Can anyone confirm that this is the likely cause of the hangs?  I've
> appended a gdb backtrace.  The session is still around in case anyone
> is interested.

It looks to be the same problem, i.e. mallopt => signal handler =>  
malloc.
You can close the session.  I guess you have to patch the source  
yourself,
or run CVS latest, since the scope of the next release is under  
discussion.

	Jan D.

Re: Frequent hangs with 21.3.1.

[Gaute B Strokkenes]

On 13 apr 2004, jan.h.d@swipnet.se wrote:

>> I'm experiencing extremely frequent (hourly) hangs with emacs
>> 21.3.1 on Redhat GNU/Linux 9.  I suspect the problem is fixed in
>> mainline with this patch:
>>
>> http://savannah.gnu.org/cgi-bin/viewcvs/emacs/emacs/src/alloc.c.diff?r1=1.328&r2=1.329
>>
>> Can anyone confirm that this is the likely cause of the hangs?
>> I've appended a gdb backtrace.  The session is still around in case
>> anyone is interested.
>
> It looks to be the same problem, i.e. mallopt => signal handler =>
> malloc.  You can close the session.  I guess you have to patch the
> source yourself, or run CVS latest, since the scope of the next
> release is under discussion.

Thanks.  I'll start nagging the relevant people at work at once (I
use CVS with mtty at home.)

-- 
Gaute Strokkenes                        http://www.srcf.ucam.org/~gs234/
..  he dominates the DECADENT SUBWAY SCENE.