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List: kde-kimageshop
Subject: Re: Randomly timeouting test
From: Cyrille Berger Skott <cberger () cberger ! net>
Date: 2011-03-23 10:50:19
Message-ID: 201103231150.20155.cberger () cberger ! net
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On Wednesday 23 March 2011, Cyrille Berger Skott wrote:
> Hi,
>
> Since March 20, on http://my.cdash.org/index.php?project=Calligra , I get
> plenty of random test failure, they seem to lock at exit time, for
> instance:
>
> http://my.cdash.org/testDetails.php?test=5447865&build=170134
> http://my.cdash.org/testDetails.php?test=5440894&build=169866
>
> Before anyone ask, it is a clean build :) (fully clean, I have clean ccache
> as well) And, I have a strong suspicion that the culprit is:
> http://quickgit.kde.org/?p=calligra.git&a=commit&h=21b3d21808ae4d24f611acd9
> a8f0dd1adbbfc66d
I did a bit more investigation. It is very difficult to get the deadlock if
the machine is not under load. In attachement I have put the backtraces for
the deadlock.
--
Cyrille Berger Skott
["exitdeadlock.txt" (text/plain)]
(gdb) info threads
3 Thread 0x7f6b6f906700 (LWP 15287) pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 2 Thread \
0x7f6b6f105700 (LWP 15288) pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
* 1 Thread 0x7f6b816b17a0 (LWP 15270) pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 (gdb) thread 1
[Switching to thread 1 (Thread 0x7f6b816b17a0 (LWP 15270))]#0 \
pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 162 in \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (gdb) bt
#0 pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f6b7bee672b \
in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4 #2 \
0x00007f6b7bee5814 in QThread::wait(unsigned long) () from /usr/lib/libQtCore.so.4 #3 \
0x00007f6b80a310f1 in ~KisTileDataStore (this=0x25be32c, __in_chrg=<value optimized \
out>) at /home/cyrille/src/calligra/krita/image/tiles3/kis_tile_data_store.cc:81 #4 \
0x00007f6b80a31817 in destroy () at \
/home/cyrille/src/calligra/krita/image/tiles3/kis_tile_data_store.cc:100 #5 \
0x00007f6b7ac56262 in __run_exit_handlers (status=0) at exit.c:78 #6 *__GI_exit \
(status=0) at exit.c:100 #7 0x00007f6b7ac3bc54 in __libc_start_main (main=<value \
optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value \
optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, \
stack_end=0x7fff939bd5e8) at libc-start.c:258 #8 0x0000000000402e29 in _start ()
(gdb) thread 2
[Switching to thread 2 (Thread 0x7f6b6f105700 (LWP 15288))]#0 \
pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 162 in \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (gdb) bt
#0 pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f6b7bee672b \
in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4 #2 \
0x00007f6b7bee2511 in QSemaphore::tryAcquire(int, int) () from \
/usr/lib/libQtCore.so.4 #3 0x00007f6b80a6382a in KisTileDataSwapper::run \
(this=0x25be138) at /home/cyrille/src/calligra/krita/image/tiles3/swap/kis_tile_data_swapper.cpp:90
#4 0x00007f6b7bee5775 in ?? () from /usr/lib/libQtCore.so.4
#5 0x00007f6b7bc559ca in start_thread (arg=<value optimized out>) at \
pthread_create.c:300 #6 0x00007f6b7ad0370d in clone () at \
../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #7 0x0000000000000000 in ?? ()
(gdb) thread 3
[Switching to thread 3 (Thread 0x7f6b6f906700 (LWP 15287))]#0 \
pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 162 in \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S (gdb) bt
#0 pthread_cond_wait@@GLIBC_2.3.2 () at \
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007f6b7bee672b \
in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4 #2 \
0x00007f6b7bee2680 in QSemaphore::acquire(int) () from /usr/lib/libQtCore.so.4 #3 \
0x00007f6b80a3221e in KisTileDataPooler::waitForWork (this=0x25be100) at \
/home/cyrille/src/calligra/krita/image/tiles3/kis_tile_data_pooler.cc:160 #4 \
0x00007f6b80a32718 in KisTileDataPooler::run (this=0x25be100) at \
/home/cyrille/src/calligra/krita/image/tiles3/kis_tile_data_pooler.cc:182 #5 \
0x00007f6b7bee5775 in ?? () from /usr/lib/libQtCore.so.4 #6 0x00007f6b7bc559ca in \
start_thread (arg=<value optimized out>) at pthread_create.c:300 #7 \
0x00007f6b7ad0370d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 \
0x0000000000000000 in ?? ()
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