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bug#17753: Cygwin emacs-X11 core dump
From: |
markus . hoenicka |
Subject: |
bug#17753: Cygwin emacs-X11 core dump |
Date: |
Sat, 14 Jun 2014 00:53:04 +0200 |
Eli Zaretskii writes:
> > Date: Wed, 11 Jun 2014 08:16:39 +0200
> > From: Markus Hoenicka <markus.hoenicka@mhoenicka.de>
> > Cc: 17753@debbugs.gnu.org
> >
> > > Are you sure you were in the right thread when you collected the
> > > backtrace?
> > >
> >
> > No, I'm not sure at all. How do I find out?
>
> "info threads" will display all the threads. "thread apply all bt"
> will produce a backtrace for every thread.
Ok, here goes:
(gdb) info threads
Id Target Id Frame
9 Thread 0xe14 0x0004003300001f80 in ?? ()
8 Thread 0xb48 0x9e84003300001f80 in ?? ()
7 Thread 0x8fc 0x0005003300001f80 in ?? ()
6 Thread 0xc20 0x0005003300001f80 in ?? ()
5 Thread 0x8dc 0x0000003300001f80 in ?? ()
4 Thread 0xf34 0x0000003300001f80 in ?? ()
3 Thread 0xda0 0x0000003300001f80 in ?? ()
2 Thread 0x64c 0x0000003300001f80 in ?? ()
* 1 Thread 0x6d8 0x0000003300001fa4 in ?? ()
(gdb) thread apply all bt
Thread 9 (Thread 0xe14):
#0 0x0004003300001f80 in ?? ()
#1 0x0000000000000000 in ?? ()
Thread 8 (Thread 0xb48):
#0 0x9e84003300001f80 in ?? ()
#1 0x000007fefd5410dc in ?? ()
#2 0x0000000000000000 in ?? ()
Thread 7 (Thread 0x8fc):
#0 0x0005003300001f80 in ?? ()
#1 0x000007fefd5410dc in ?? ()
#2 0x0000000000000000 in ?? ()
Thread 6 (Thread 0xc20):
#0 0x0005003300001f80 in ?? ()
#1 0x000007fefd5410dc in ?? ()
#2 0x0000000000000000 in ?? ()
Thread 5 (Thread 0x8dc):
#0 0x0000003300001f80 in ?? ()
#1 0x000007fefd5411a2 in ?? ()
---Type <return> to continue, or q <return> to quit---
#2 0x00000000035caba8 in ?? ()
#3 0x0000000600042280 in ?? ()
#4 0x0000000000000003 in ?? ()
#5 0x00000001802de988 in ?? ()
#6 0x00000000000000c6 in ?? ()
#7 0x000000018010bc01 in ?? ()
#8 0x0000000000000048 in ?? ()
#9 0x0000000000000001 in ?? ()
#10 0x0000000000000000 in ?? ()
Thread 4 (Thread 0xf34):
#0 0x0000003300001f80 in ?? ()
Cannot access memory at address 0xffffc458
(gdb) thread apply 3 bt
Thread 3 (Thread 0xda0):
#0 0x0000003300001f80 in ?? ()
#1 0x00000000774fb037 in ?? ()
#2 0x0000000000000002 in ?? ()
#3 0x0000000000000000 in ?? ()
(gdb) thread apply 2 bt
Thread 2 (Thread 0x64c):
#0 0x0000003300001f80 in ?? ()
#1 0x000007fefd541a7a in ?? ()
#2 0x000000000042ce00 in ?? ()
#3 0x0000000100629773 in run_timers ()
at /usr/src/debug/emacs-24.3.90-1/src/atimer.c:364
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb) thread apply 1 bt
Thread 1 (Thread 0x6d8):
#0 0x0000003300001fa4 in ?? ()
#1 0x0000000100a49832 in bss_sbrk_buffer ()
#2 0x000000000042ccf0 in ?? ()
#3 0x0000000000000004 in ?? ()
#4 0x0000000101013c48 in bss_sbrk_buffer ()
#5 0x0000000000425170 in ?? ()
#6 0x000000010052b64d in CHAR_TABLE_REF (
ct=<error reading variable: Cannot access memory at address
0x4251a000000010>,
ct@entry=<error reading variable: Cannot access memory at address
0x4251a000000008>,
idx=<error reading variable: Cannot access memory at address
0x4251a000000018>) at /usr/src/debug/emacs-24.3.90-1/src/lisp.h:1468
As for thread 2 I'd like to mention that there were several hints on
the Cygwin list that 64 bit Emacs has a timer-related problem, see
e.g. the thread around this post:
https://cygwin.com/ml/cygwin/2014-05/msg00419.html
In brief, I've noticed several error messages in a previous version of
64 bit Cygwin Emacs that did not cause Emacs to crash but indicated
timer-related malfunctions anyway:
Args out of range: [t 21335 39727 373923 0.5 blink-cursor-timer-function nil
nil 100000], 4
Invalid function: #[(timer) "^H >^H
^[\211^203^Q^@Ã^H \"^Q^K\203^Z^@Ã^H
\"^R^L\206^_^@^K*\207" [timer timer-list timer-idle-list cell2 cell1 delq] 4
2245674]
timer-relative-time: Wrong type argument: vectorp, [t1 time high low micro pico
nil 3 0 2 ...]
I've never noticed any of these messages on the other 64 bit platforms
that I use Emacs on, i.e. FreeBSD 10 and Debian testing.
Hope this helps
Markus
--
Markus Hoenicka
http://www.mhoenicka.de
AQ score 38