[KDE 4] hardy, krunner crashed (SIGSEGV)

[Alexander Rødseth]

Steps to reproduce:
1. alt+f2
2. type "kdesudo synaptic" and press enter

Backtrace:
(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb4f4b740 (LWP 7591)]
[New Thread 0xb0a94b90 (LWP 8341)]
[New Thread 0xb1a97b90 (LWP 8322)]
[New Thread 0xb2298b90 (LWP 8321)]
[New Thread 0xb2a99b90 (LWP 8320)]
[New Thread 0xb329ab90 (LWP 8319)]
[KCrash handler]
#6 0xb7e178ac in memcpy () from /lib/tls/i686/cmov/libc.so.6
#7 0xb7b51ee8 in QIODevice::read () from /usr/lib/libQtCore.so.4
#8 0xb7b3c2e6 in QDataStream::operator>> () from /usr/lib/libQtCore.so.4
#9 0xb7a30ed9 in KSycoca::findEntry (this=0x81df7b8, offset=1285809,
    type=@0xb2297f84)
    at /build/buildd/kde4libs-4.0.1/kdecore/sycoca/ksycoca.cpp:330
#10 0xb79b7205 in KServiceFactory::createEntry (this=0x81b1340,
    offset=1285809)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicefactory.cpp:181
#11 0xb79b6e3a in KServiceFactory::serviceOffers (this=0x81b1340,
    serviceTypeOffset=17337, serviceOffersOffset=<value optimized out>)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicefactory.cpp:269
#12 0xb79c6354 in KServiceTypeTrader::defaultOffers (this=0x81e13b0,
    serviceType=@0xb2298100, constraint=@0xb229810c)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypetrader.cpp:125
#13 0xb79c63e0 in KServiceTypeTrader::query (this=0x81e13b0,
    serviceType=@0xb2298100, constraint=@0xb229810c)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypetrader.cpp:141
#14 0xb7f2ff7a in ?? () from /usr/lib/kde4/lib/libkdeinit4_krunner.so
#15 0xb2298104 in ?? ()
#16 0x081e13b0 in ?? ()
#17 0xb2298100 in ?? ()
#18 0xb229810c in ?? ()
#19 0xb2298118 in ?? ()
#20 0xb2298118 in ?? ()
#21 0xb22980f8 in ?? ()
#22 0xb7af0090 in QReadWriteLock::unlock () from /usr/lib/libQtCore.so.4
#23 0xb7ccf0ef in Plasma::AbstractRunner::performMatch ()
   from /usr/lib/kde4/lib/libplasma.so.1
#24 0xb7f2a6b7 in ?? () from /usr/lib/kde4/lib/libkdeinit4_krunner.so
#25 0x081d2488 in ?? ()
#26 0x08123374 in ?? ()
#27 0xb22981d8 in ?? ()
#28 0x00000000 in ?? ()

Thread 3 (Thread 0xb1a97b90 (LWP 8322)):
#0 0xb7f46410 in __kernel_vsyscall ()
#1 0xb7aa4aa5 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7e8776d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3 0xb7af4904 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4 0xb7a8cedd in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x81e36b0, th=0x81a36c8)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/WeaverImpl.cpp:365
#5 0xb7a916ac in ThreadWeaver::WorkingHardState::waitForAvailableJob (
    this=0x8231a18, th=0x81a36c8)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/WorkingHardState.cpp:80
#6 0xb7a8c59b in ThreadWeaver::WeaverImpl::waitForAvailableJob (
    this=0x81e36b0, th=0x81a36c8)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/WeaverImpl.cpp:356
#7 0xb7a917cf in ThreadWeaver::WorkingHardState::applyForWork (
    this=0x8231a18, th=0x81a36c8)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/WorkingHardState.cpp:71
#8 0xb7a8d103 in ThreadWeaver::WeaverImpl::applyForWork (this=0x81e36b0,
    th=0x81a36c8, previous=0x8484a58)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/WeaverImpl.cpp:351
#9 0xb7a8f9cd in ThreadWeaver::ThreadRunHelper::run (this=0xb1a972c0,
    parent=0x81e36b0, th=0x81a36c8)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/Thread.cpp:87
#10 0xb7a8faf5 in ThreadWeaver::Thread::run (this=0x81a36c8)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/Thread.cpp:142
#11 0xb7af4037 in ?? () from /usr/lib/libQtCore.so.4
#12 0x081a36c8 in ?? ()
#13 0x00000000 in ?? ()

Thread 2 (Thread 0xb0a94b90 (LWP 8341)):
#0 0xb7f46410 in __kernel_vsyscall ()
#1 0xb7e73311 in select () from /lib/tls/i686/cmov/libc.so.6
#2 0xb7b8dc67 in ?? () from /usr/lib/libQtCore.so.4
#3 0x0000000c in ?? ()
#4 0xb0a94248 in ?? ()
#5 0x00000000 in ?? ()

Thread 1 (Thread 0xb4f4b740 (LWP 7591)):
#0 0xb7f46410 in __kernel_vsyscall ()
#1 0xb7aa4aa5 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7e8776d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3 0xb7af4904 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4 0xb7af40de in QThread::wait () from /usr/lib/libQtCore.so.4
#5 0xb7b8e0ad in ?? () from /usr/lib/libQtCore.so.4
#6 0x0806dfb0 in ?? ()
#7 0xffffffff in ?? ()
#8 0xbfec03c8 in ?? ()
#9 0xb6a64d31 in operator delete () from /usr/lib/libstdc++.so.6
#10 0xb7b8cc26 in ?? () from /usr/lib/libQtCore.so.4
#11 0x0806dfb0 in ?? ()
#12 0xb7eeeff4 in ?? () from /lib/tls/i686/cmov/libc.so.6
#13 0xbfec0408 in ?? ()
#14 0xb7dd1f34 in exit () from /lib/tls/i686/cmov/libc.so.6
Backtrace stopped: frame did not save the PC
#0 0xb7f46410 in __kernel_vsyscall ()

[Rich Johnson (nixternal)]

Confirming due to similarities seen in other report, as well as I was able to reproduce this. However, after crashing it I tried to reproduce it, but it seems that if your password is in memory with kdesu/kdesudo, it will not crash again. So I have to wait 15 or so minutes to try again w/o logging in and out :) Thanks!

[Daniel Hahler (blueyed)]

Richard, you can use "sudo -k" to kill the cached sudo password.

[Rich Johnson (nixternal)]

sudo -k or -K doesn't do it, I had to kill it with kdesudo -s. However I can't get it to crash at all. I installed Synaptic to see if it was Synaptic only. I will continue messing around seeing if I can get it to crash, but right now it won't.

[Rich Johnson (nixternal)]

Well, I got it to crash by doing 'kdesudo kwrite' this time. Here is the crash report on it. I will search upstream a bit and see if I can find anything.
----------------------------------------

(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb5797720 (LWP 7260)]
[New Thread 0xb1c5db90 (LWP 23371)]
[New Thread 0xb245eb90 (LWP 17077)]
[New Thread 0xb2c5fb90 (LWP 17076)]
[New Thread 0xb3460b90 (LWP 17075)]
[New Thread 0xb3c61b90 (LWP 17074)]
[KCrash handler]
#6 0xb7afd1df in QIODevice::read () from /usr/lib/libQtCore.so.4
#7 0xb7ae82e6 in QDataStream::operator>> () from /usr/lib/libQtCore.so.4
#8 0xb7ae30ba in operator>> () from /usr/lib/libQtCore.so.4
#9 0xb795e638 in KServicePrivate::load (this=0x8399000, s=@0x81be7f0)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservice.cpp:304
#10 0xb795e7d1 in KService (this=0x8448cf0, _str=@0x81be7f0, _offset=1013809)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservice.cpp:370
#11 0xb7963301 in KServiceFactory::createEntry (this=0x8252ec0,
    offset=1013809)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicefactory.cpp:184
#12 0xb7962e3a in KServiceFactory::serviceOffers (this=0x8252ec0,
    serviceTypeOffset=19510, serviceOffersOffset=<value optimized out>)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicefactory.cpp:269
#13 0xb7972354 in KServiceTypeTrader::defaultOffers (this=0x814bbd0,
    serviceType=@0xb3c61120, constraint=@0xb3c6112c)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypetrader.cpp:125
#14 0xb79723e0 in KServiceTypeTrader::query (this=0x814bbd0,
    serviceType=@0xb3c61120, constraint=@0xb3c6112c)
    at /build/buildd/kde4libs-4.0.1/kdecore/services/kservicetypetrader.cpp:141
#15 0xb7edef7a in ?? () from /usr/lib/kde4/lib/libkdeinit4_krunner.so
#16 0xb3c61124 in ?? ()
#17 0x0814bbd0 in ?? ()
#18 0xb3c61120 in ?? ()
#19 0xb3c6112c in ?? ()
#20 0xb3c61138 in ?? ()
#21 0xb3c61138 in ?? ()
#22 0xb3c61118 in ?? ()
#23 0xb7a9c090 in QReadWriteLock::unlock () from /usr/lib/libQtCore.so.4
#24 0xb7c7b0ef in Plasma::AbstractRunner::performMatch ()
   from /usr/lib/kde4/lib/libplasma.so.1
#25 0xb7ed96b7 in ?? () from /usr/lib/kde4/lib/libkdeinit4_krunner.so
#26 0x08184b10 in ?? ()
#27 0x08138ddc in ?? ()
#28 0xb3c611f8 in ?? ()
#29 0x00000000 in ?? ()

Thread 5 (Thread 0xb3460b90 (LWP 17075)):
#0 0xb7ef5410 in __kernel_vsyscall ()
#1 0xb7a50aa5 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7e3376d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3 0xb7aa0904 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4 0xb7a38edd in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8185608, th=0x8236410)
    at /build/buildd/kde4libs-4.0.1/threadweaver/Weaver/WeaverImpl.cpp:365
#5 0xb7a3d6ac in ThreadWeaver::WorkingHardState::waitForAvailableJob (
...

[Rich Johnson (nixternal)]

Hey found an upstream report and found out the reason for a lot of the KLauncher crashes which look like their fixes will make it into 4.0.3, so that is good news. Now I need to go through and find all of the KRunner crashes that deal with threading and subscribe this bug to them as well. Thanks!

[Alexander Rødseth (alexanro)]

Thanks for your good bug-management, Richard.

[Rich Johnson (nixternal)]

No problem. Funny thing is, I hadn't had any issues with KRunner, or at least noticed them, until I started working on these KRunner reports :)

[Rich Johnson (nixternal)]

We should see this in the next couple of weeks make its way into Kubuntu!!!

[Alexander Rødseth (alexanro)]

Great work, thanks.