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bug#17753: Cygwin emacs-X11 core dump


From: markus . hoenicka
Subject: bug#17753: Cygwin emacs-X11 core dump
Date: Mon, 7 Jul 2014 23:31:11 +0200

Ken Brown writes:
 > On 7/4/2014 5:21 PM, address@hidden wrote:
 > > I'm aware that you won't be able to do much unless I provide a recipe
 > > to reproduce the bug. This looks impossible to me. The second crash
 > > occurred roughly 4 weeks after the first one. I run Cygwin Emacs
 > > roughly 10 h a day, so I experience one crash in like 200 h. Also, as
 > > I have to use Emacs productively at my dayjob, I won't be able to run
 > > emacs-x11 -Q for weeks in order to see if any of my customizations
 > > interfere.
 > >
 > > Please let me know if I can pull any additional knowledge from these
 > > coredumps.
 > 
 > I don't see anything that we can get from this, but please keep 
 > reporting the crashes.  Maybe we'll eventually get a backtrace that 
 > makes sense or a recipe for producing the crash.
 > 
 > Ken

Ok. My Emacs suffered from a bad hair day today - two crashes in a
row. Crash #1 happened while I was marking a region, I pressed the
down arrow key repeatedly when Emacs died. Crash #2 happened after I
published my planner pages to xhtml, the output page was written
ok. Crash #1 resulted in the familiar backtrace. Crash #2 was
different but I'm afraid the backtrace is even less informative.

regards,
Markus

Crash #1
(gdb) info threads
  Id   Target Id         Frame
  9    Thread 0x264      0x0004003300001f80 in ?? ()
  8    Thread 0x1090     0x9e84003300001f80 in ?? ()
  7    Thread 0x1174     0x0005003300001f80 in ?? ()
  6    Thread 0x116c     0x0005003300001f80 in ?? ()
  5    Thread 0x1168     0x0000003300001f80 in ?? ()
  4    Thread 0x1164     0x0000003300001f80 in ?? ()
  3    Thread 0x1160     0x0000003300001f80 in ?? ()
  2    Thread 0x115c     0x0000003300001f80 in ?? ()
* 1    Thread 0x1124     0x0000003300001fa4 in ?? ()
(gdb) thread apply all bt

Thread 9 (Thread 0x264):
#0  0x0004003300001f80 in ?? ()
#1  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x1090):
#0  0x9e84003300001f80 in ?? ()
#1  0x000007fefd0610dc in ?? ()
#2  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x1174):
#0  0x0005003300001f80 in ?? ()
#1  0x000007fefd0610dc in ?? ()
#2  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x116c):
#0  0x0005003300001f80 in ?? ()
#1  0x000007fefd0610dc in ?? ()
#2  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x1168):
#0  0x0000003300001f80 in ?? ()
#1  0x000007fefd061203 in ?? ()
#2  0x000000000310aba8 in ?? ()
#3  0x0000000600042280 in ?? ()
#4  0x0000000000000003 in ?? ()
#5  0x00000001802de988 in ?? ()
#6  0xfffffffffffe7960 in ?? ()
#7  0x000000000310ab10 in ?? ()
#8  0x0000000000000048 in ?? ()
#9  0x0000000000000001 in ?? ()
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x1164):
#0  0x0000003300001f80 in ?? ()
Cannot access memory at address 0xffffc458

(gdb) thread apply 3 bt

Thread 3 (Thread 0x1160):
#0  0x0000003300001f80 in ?? ()
#1  0x0000000076f7b037 in ?? ()
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()
(gdb) thread apply 2 bt

Thread 2 (Thread 0x115c):
#0  0x0000003300001f80 in ?? ()
#1  0x000007fefd061a7a 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 0x1124):
#0  0x0000003300001fa4 in ?? ()
#1  0x0000000000430000 in ?? ()
#2  0x000000010097a38c in ?? ()
#3  0xffffffff0000e118 in ?? ()
#4  0x00000000005a6e30 in ?? ()
#5  0x0000000000424760 in ?? ()
#6  0x000000010052c737 in set_string_intervals (
    s=<error reading variable: Cannot access memory at address 
0x42a84000000010>,
    address@hidden<error reading variable: Cannot access memory at address 
0x42a84000000008>,
    i=<error reading variable: Cannot access memory at address 
0x42a84000000018>) at /usr/src/debug/emacs-24.3.90-1/src/lisp.h:3278


Crash #2
(gdb) info threads
  Id   Target Id         Frame
  9    Thread 0x538      0x0004003300001f80 in ?? ()
  8    Thread 0x17e8     0x2948003300001f80 in ?? ()
  7    Thread 0x15d4     0x0000003300001f80 in ?? ()
  6    Thread 0xca4      0x0000003300001f80 in ?? ()
  5    Thread 0x388      0x0000003300001f80 in ?? ()
  4    Thread 0x1314     0x0000003300001f80 in ?? ()
  3    Thread 0x172c     0x0000003300001f80 in ?? ()
  2    Thread 0xbc0      0x0000003300001f80 in ?? ()
* 1    Thread 0x1454     0x0000003300001fa4 in ?? ()
(gdb) thread apply all bt

Thread 9 (Thread 0x538):
#0  0x0004003300001f80 in ?? ()
#1  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x17e8):
#0  0x2948003300001f80 in ?? ()
#1  0x000007fefd0610dc in ?? ()
#2  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x15d4):
#0  0x0000003300001f80 in ?? ()
#1  0x000007fefd0610dc in ?? ()
#2  0x0000000000000000 in ?? ()

Thread 6 (Thread 0xca4):
#0  0x0000003300001f80 in ?? ()
#1  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x388):
#0  0x0000003300001f80 in ?? ()
#1  0x000007fefd061203 in ?? ()
#2  0x000000000357aba8 in ?? ()
#3  0x0000000600042280 in ?? ()
#4  0x0000000000000003 in ?? ()
#5  0x00000001802de618 in ?? ()
#6  0xfffffffffffe7960 in ?? ()
#7  0x000000000357ab10 in ?? ()
#8  0x0000000000000048 in ?? ()
#9  0x0000000000000001 in ?? ()
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x1314):
#0  0x0000003300001f80 in ?? ()
Cannot access memory at address 0xffffc458
(gdb) thread apply 3 bt

Thread 3 (Thread 0x172c):
#0  0x0000003300001f80 in ?? ()
#1  0x0000000076f7b037 in ?? ()
#2  0x0000000000000002 in ?? ()
#3  0x0000000000000000 in ?? ()
(gdb) thread apply 2 bt

Thread 2 (Thread 0xbc0):
#0  0x0000003300001f80 in ?? ()
#1  0x000007fefd061a7a in ?? ()
#2  0x000000000042ce00 in ?? ()
#3  0x000000018006f5c0 in ?? ()
#4  0x00000001802dc938 in ?? ()
#5  0x0000000000000000 in ?? ()
(gdb) thread apply 1 bt

Thread 1 (Thread 0x1454):
#0  0x0000003300001fa4 in ?? ()
#1  0x000007fefd061203 in ?? ()
#2  0x0000000000425308 in ?? ()
#3  0x00000000004253c0 in ?? ()
#4  0x0000000000425428 in ?? ()
#5  0x0000000000000001 in ?? ()
#6  0xffffffffffffd8f0 in ?? ()
#7  0x0000000000425270 in ?? ()
#8  0x0000000000000048 in ?? ()
#9  0x0000000000000001 in ?? ()
#10 0x0000000000000000 in ?? ()

-- 
Markus Hoenicka
http://www.mhoenicka.de
AQ score 38





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