Bug 412165

Summary: Discover crashed whilst installing snap app that required protection turning off.
Product: [Applications] Discover Reporter: Dan Dart <kde>
Component: discoverAssignee: Dan Leinir Turthra Jensen <leinir>
Status: RESOLVED WAITINGFORINFO    
Severity: crash CC: aleixpol
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.16.5   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Dan Dart 2019-09-21 16:11:04 UTC 
Application: plasma-discover (5.16.5)

Qt Version: 5.12.2
Frameworks Version: 5.62.0
Operating System: Linux 5.0.0-29-generic x86_64
Distribution: Ubuntu 19.04

-- Information about the crash:
- What I was doing when the application crashed:

Searched for Skype
Pressed Install
Tried to confirm the snap question to whether protections should be turned off
Segfaulted

-- Backtrace:
Application: Discover (plasma-discover), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9a309a5940 (LWP 23609))]

Thread 10 (Thread 0x7f9a06ffd700 (LWP 23729)):
#0  0x00007f9a34bb0fb4 in __GI___libc_read (nbytes=16, buf=0x7f9a06ffca40, fd=20) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f9a34bb0fb4 in __GI___libc_read (fd=20, buf=0x7f9a06ffca40, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f9a339d3410 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9a3398c6cf in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9a3398cba0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f9a35137063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9a34f2d2c6 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f9a077fe700 (LWP 23658)):
#0  0x00007f9a343543bb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f71f024734) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9a343543bb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f71f0246e0, cond=0x55f71f024708) at pthread_cond_wait.c:502
#2  0x00007f9a343543bb in __pthread_cond_wait (cond=0x55f71f024708, mutex=0x55f71f0246e0) at pthread_cond_wait.c:655
#3  0x00007f9a34f34733 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9a34f34819 in QWaitCondition::wait(QMutex*, unsigned long) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9a36bd65d9 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f9a36bd683a in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f9a07fff700 (LWP 23656)):
#0  0x00007f9a34bb5729 in __GI___poll (fds=0x7f99fc044a20, nfds=1, timeout=90329) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9a3398cbf6 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9a35137063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9a34f2d2c6 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f9a16224700 (LWP 23646)):
#0  0x00007f9a3398c515 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f9a3398cba0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9a35137063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9a34f2d2c6 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f9a16dfc700 (LWP 23643)):
#0  0x00007f9a34bb5729 in __GI___poll (fds=0x7f9a100018e0, nfds=1, timeout=9330) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9a3398cbf6 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9a35137063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9a34f2d2c6 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f9a1df7b700 (LWP 23622)):
#0  0x00007f9a343543bb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f71e3dcc58) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f9a343543bb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f71e3dcc08, cond=0x55f71e3dcc30) at pthread_cond_wait.c:502
#2  0x00007f9a343543bb in __pthread_cond_wait (cond=0x55f71e3dcc30, mutex=0x55f71e3dcc08) at pthread_cond_wait.c:655
#3  0x00007f9a1e56d36b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f9a1e56d0d7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f9a2cfca700 (LWP 23613)):
#0  0x00007f9a37276a06 in  () at /lib64/ld-linux-x86-64.so.2
#1  0x00007f9a3727c448 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2
#2  0x00007f9a34f2d996 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f9a35136f3a in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f9a3398c129 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9a3398cb2b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f9a35137063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f9a34f2d2c6 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f9a3590bef5 in  () at /lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f9a2e1db700 (LWP 23612)):
#0  0x00007f9a34bb0fb4 in __GI___libc_read (nbytes=16, buf=0x7f9a2e1daa10, fd=7) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f9a34bb0fb4 in __GI___libc_read (fd=7, buf=0x7f9a2e1daa10, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f9a339d3410 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9a3398c6cf in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9a3398cba0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f9a35137063 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f9a34f2d2c6 in QThread::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f9a35ab3565 in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#12 0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f9a2f701700 (LWP 23611)):
#0  0x00007f9a34bb5729 in __GI___poll (fds=0x7f9a2f700b68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9a338ae917 in  () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f9a338b053a in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f9a302ed6a8 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f9a34f2e612 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f9a3434e182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f9a34bc1b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f9a309a5940 (LWP 23609)):
[KCrash Handler]
#6  0x00007f9a1745f53d in QSnapdInstallRequest::handleResult(void*, void*) () at /lib/x86_64-linux-gnu/libsnapd-qt.so.1
#7  0x00007f9a173edbd2 in  () at /lib/x86_64-linux-gnu/libsnapd-glib.so.1
#8  0x00007f9a3398c898 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f9a3398cc88 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f9a3398cd1c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f9a35137047 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f9a350e25bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f9a350ea5e2 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x000055f71dd77e1a in  ()
#15 0x00007f9a34acab6b in __libc_start_main (main=0x55f71dd777a0, argc=1, argv=0x7ffcf94a8068, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcf94a8058) at ../csu/libc-start.c:308
#16 0x000055f71dd783ba in _start ()
[Inferior 1 (process 23609) detached]

Reported using DrKonqi
Comment 1 Aleix Pol 2019-10-28 18:19:37 UTC 
Works fine on 19.10. It would be useful if you could provide the backtrace with debug symbols.