segv in indi gui

Hy Murveit murveit at gmail.com
Fri Sep 10 02:32:16 BST 2021 

Using the latest HEAD, 2e36eb8322d8f8490c0419f64f86e1152127fb94 including
"check for nullptr..." I got this segv
by starting ekos, and disconnecting right away (repeated 3 times), on my
RPi4 running ubuntu 21.04.

Hy

(gdb) bt
#0  0x0000aaaaab4a1508 in INDI::BaseDevice::getDeviceName() const ()
#1  0x0000aaaaaae795fc in operator() (__closure=0xffffb40bef30)
    at /home/hy/Projects/kstars/kstars/indi/clientmanager.cpp:111
#2  QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>,
void, ClientManager::newProperty(INDI::Property*)::<lambda()> >::call
(arg=<optimized out>, f=...)
    at /usr/include/aarch64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:146
#3
 QtPrivate::Functor<ClientManager::newProperty(INDI::Property*)::<lambda()>,
0>::call<QtPrivate::List<>, void> (arg=<optimized out>, f=...)
    at /usr/include/aarch64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:256
#4
 QtPrivate::QFunctorSlotObject<ClientManager::newProperty(INDI::Property*)::<lambda()>,
0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *,
QObject *, void **, bool *)
    (which=1, this_=0xffffb40bef20, r=<optimized out>, a=<optimized out>,
ret=<optimized out>) at
/usr/include/aarch64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:443
#5  0x0000fffff52ef6d4 in QObject::event(QEvent*) ()
    at /lib/aarch64-linux-gnu/libQt5Core.so.5
#6  0x0000fffff5d369b0 in QApplicationPrivate::notify_helper(QObject*,
QEvent*) ()
    at /lib/aarch64-linux-gnu/libQt5Widgets.so.5
#7  0x0000fffff52bdb60 in QCoreApplication::notifyInternal2(QObject*,
QEvent*) ()
    at /lib/aarch64-linux-gnu/libQt5Core.so.5
#8  0x0000fffff52c0f48 in
QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
at /lib/aarch64-linux-gnu/libQt5Core.so.5
#9  0x0000fffff531e9e8 in  () at /lib/aarch64-linux-gnu/libQt5Core.so.5
#10 0x0000fffff4257578 in g_main_context_dispatch ()
    at /lib/aarch64-linux-gnu/libglib-2.0.so.0
#11 0x0000fffff42ad188 in  () at /lib/aarch64-linux-gnu/libglib-2.0.so.0
#12 0x0000fffff4254ac4 in g_main_context_iteration ()
    at /lib/aarch64-linux-gnu/libglib-2.0.so.0
#13 0x0000fffff531de94 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /lib/aarch64-linux-gnu/libQt5Core.so.5
#14 0x0000fffff52bc04c in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/aarch64-linux-gnu/libQt5Core.so.5
#15 0x0000fffff52c514c in QCoreApplication::exec() ()
    at /lib/aarch64-linux-gnu/libQt5Core.so.5
#16 0x0000aaaaaab927cc in main(int, char**) (argc=<optimized out>,
argv=<optimized out>)
    at /home/hy/Projects/kstars/kstars/main.cpp:393
(gdb)



On Thu, Sep 9, 2021 at 10:48 AM Hy Murveit <murveit at gmail.com> wrote:

> I just got another segv, and it happened when I clicked "Disconnect"
> trying to disconnect indi.
> Here's the backtrace:
>
> (gdb) bt
> #0  0x0000aaaaaae8af88 in INDI_E::syncSwitch() (this=0xaaaab3f2ebc0) at
> /home/hy/Projects/kstars/kstars/indi/indielement.cpp:209
> #1  0x0000aaaaaae84968 in INDI_D::updateSwitchGUI(_ISwitchVectorProperty*)
> (this=<optimized out>, svp=<optimized out>)
>     at /home/hy/Projects/kstars/kstars/indi/indidevice.cpp:188
> #2  0x0000fffff52ef6d4 in QObject::event(QEvent*) () at
> /lib/aarch64-linux-gnu/libQt5Core.so.5
> #3  0x0000fffff5d369b0 in QApplicationPrivate::notify_helper(QObject*,
> QEvent*) () at /lib/aarch64-linux-gnu/libQt5Widgets.so.5
> #4  0x0000fffff52bdb60 in QCoreApplication::notifyInternal2(QObject*,
> QEvent*) () at /lib/aarch64-linux-gnu/libQt5Core.so.5
> #5  0x0000fffff52c0f48 in
> QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
>     at /lib/aarch64-linux-gnu/libQt5Core.so.5
> #6  0x0000fffff531e9e8 in  () at /lib/aarch64-linux-gnu/libQt5Core.so.5
> #7  0x0000fffff4257578 in g_main_context_dispatch () at
> /lib/aarch64-linux-gnu/libglib-2.0.so.0
> #8  0x0000fffff42ad188 in  () at /lib/aarch64-linux-gnu/libglib-2.0.so.0
> #9  0x0000fffff4254ac4 in g_main_context_iteration () at
> /lib/aarch64-linux-gnu/libglib-2.0.so.0
> #10 0x0000fffff531de94 in
> QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
> ()
>     at /lib/aarch64-linux-gnu/libQt5Core.so.5
> #11 0x0000fffff52bc04c in
> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
> /lib/aarch64-linux-gnu/libQt5Core.so.5
> #12 0x0000fffff52c514c in QCoreApplication::exec() () at
> /lib/aarch64-linux-gnu/libQt5Core.so.5
> #13 0x0000aaaaaab927cc in main(int, char**) (argc=<optimized out>,
> argv=<optimized out>)
>     at /home/hy/Projects/kstars/kstars/main.cpp:393
> (gdb)
>
> I was running from HEAD through and including "use modern
> connect" a100fa1664e028460a348303365caf983e06eda3
>
> Hy
>
>
> On Mon, Sep 6, 2021 at 10:45 PM Jasem Mutlaq <mutlaqja at ikarustech.com>
> wrote:
>
>> Hello Hy,
>>
>> I think I submitted a refactor of the INDI Control Panel in KStars
>> that should fix such crash-on-disconnection issues. This commit has
>> the fix: 678c5e360c7651060c65133ed97b074c0b24bc40
>>
>> However, we must thoroughly test KStars now for stability issues.
>> Robert reported crashes on the MacOS client with INDI, so this needs
>> to be investigated. The due date for 3.5.5 was planned for September
>> 6th (Yesterday) but I really think we should delay perhaps for a few
>> days until we ensure stability issues are addressed. Hopefully more
>> users would try the beta to report back. Keep using KStars with *real*
>> equipment under real conditions to catch some of these elusive bugs.
>>
>> --
>> Best Regards,
>> Jasem Mutlaq
>>
>> On Tue, Sep 7, 2021 at 1:19 AM Hy Murveit <murveit at gmail.com> wrote:
>> >
>> > Thread 1 "kstars" received signal SIGSEGV, Segmentation fault.
>> >
>> > 0x0000aaaaaae88bb8 in INDI_E::syncSwitch (this=0xaaaab0179940)
>> >     at /home/hy/Projects/kstars/kstars/indi/indielement.cpp:225
>> > 225                if (sp->svp->p == IP_RO)
>> > (gdb)
>> > (gdb) bt
>> > #0  0x0000aaaaaae88bb8 in INDI_E::syncSwitch() (this=0xaaaab0179940)
>> >     at /home/hy/Projects/kstars/kstars/indi/indielement.cpp:225
>> > #1  0x0000aaaaaae82448 in
>> INDI_D::updateSwitchGUI(_ISwitchVectorProperty*)
>> >     (this=<optimized out>, svp=<optimized out>)
>> >     at /home/hy/Projects/kstars/kstars/indi/indidevice.cpp:186
>> > #2  0x0000fffff52ef6d4 in QObject::event(QEvent*) ()
>> >     at /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #3  0x0000fffff5d369b0 in QApplicationPrivate::notify_helper(QObject*,
>> QEvent*)
>> >     () at /lib/aarch64-linux-gnu/libQt5Widgets.so.5
>> > #4  0x0000fffff52bdb60 in QCoreApplication::notifyInternal2(QObject*,
>> QEvent*)
>> >     () at /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #5  0x0000fffff52c0f48 in
>> QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
>> at /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #6  0x0000fffff531e9e8 in  () at /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #7  0x0000fffff4257578 in g_main_context_dispatch ()
>> >     at /lib/aarch64-linux-gnu/libglib-2.0.so.0
>> > #8  0x0000fffff42ad188 in  () at /lib/aarch64-linux-gnu/libglib-2.0.so.0
>> > #9  0x0000fffff4254ac4 in g_main_context_iteration ()
>> >     at /lib/aarch64-linux-gnu/libglib-2.0.so.0
>> > #10 0x0000fffff531de94 in
>> QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
>> () at /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #11 0x0000fffff52bc04c in
>> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
>> /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #12 0x0000fffff52c514c in QCoreApplication::exec() ()
>> >     at /lib/aarch64-linux-gnu/libQt5Core.so.5
>> > #13 0x0000aaaaaab917cc in main(int, char**)
>> >     (argc=<optimized out>, argv=<optimized out>)
>> >     at /home/hy/Projects/kstars/kstars/main.cpp:39
>> >
>> >
>>
>
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