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This is the latest version from PPA. Similar crashes have been happening to me over several last months. Though I cannot promise it is the same spot.
On some nights it is going solidly. On others, with the same config, it's tripping multiple times. Last night it crashed after 3 hours of running. I restarted it and it crashed again in 2 hours.
INDI server and drivers keep running after crash, it's only KStars itself gets a segfault.

See the log, the focusing is just started. It is likely starting an exposure or receiving the image.

File Attachment:

File Name: log_00-51-28.txt.gz
File Size: 58 KB

Here is the stack from coredump. I can't see more details despite the kstars-bleeding-dbg package is installed.

#0  __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:131
#1  0x00005644b84ca49f in INDI::BaseDevice::setBLOB(_IBLOBVectorProperty*, xml_ele_*, char*) ()
#2  0x00005644b84caf37 in INDI::BaseDevice::setValue(xml_ele_*, char*) ()
#3  0x00005644b84ceed7 in INDI::BaseClientPrivate::dispatchCommand(xml_ele_*, char*) ()
#4  0x00005644b84cfe4c in INDI::BaseClientPrivate::listenINDI() ()
#5  0x00005644b84d01c9 in std::thread::_State_impl<std::thread::_Invoker<std::tuple<std::_Bind<void (INDI::BaseClientPrivate::*(INDI::BaseClientPrivate*))()> > > >::_M_run() ()
#6  0x00007fd6742f52b3 in std::execute_native_thread_routine (__p=0x5644bf908640) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:82
#7  0x00007fd673f7cb43 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:442
#8  0x00007fd67400ea00 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

I have a guess from my overall experience. I focus at 2x2 binning (and align at 4x4) to speed up things on my slow computer. Main capture is with no binning. So, Ekos has to switch binning back and forth. Occasionally I see an image with wrong resolution in some module. Like CCD get binned image or Focus gets an unbinned one. Furthermore, sometimes focus images get into main Ekos preview or even trigger a FITS viewer pop up, even though that is disabled. So, there may be some races that are mostly benign, unless it is around changing binning...

I should perhaps enable more logs for capture and focus next night.

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