Solved Digikam segfaults with "Address not mapped to object"

T

tOsYZYny

I had run an older version of digikam in the past (on a dedicated system, not in a jail) with no issues, but am presently running 8.1.0 and getting segfaults just opening the application. Upon looking at the error message (with the help of gdb), I figured that ASLR might be to blame, so I had disabled that. I got a little bit further and was able to load an image, but then it crashed again with the exact same error. When I set the sysctls, I stopped and restarted the jail.

gdb -c digikam.core

Code: 
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Core was generated by `digikam'.
Program terminated with signal SIGSEGV, Segmentation fault.
Address not mapped to object.
#0  0x00000008044077b4 in ?? ()
[Current thread is 1 (LWP 552309)]

I am running digikam in a jail and for reference, all of my other X11 stuff seems to work fine. I'm not sure if it is jail-related or what.

Any ideas? I shouldn't have to restart the host to completely disable ASLR, right? I've had issues in the past with some go applications and merely relaunching those after changing the sysctl allowed those to run just fine.
 
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I have since upgraded to FreeBSD 14 (fresh install) and am running into the same problem.

Code: 
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--Type <RET> for more, q to quit, c to continue without paging--
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Core was generated by `digikam'.
Program terminated with signal SIGSEGV, Segmentation fault.
Address not mapped to object.

Is anyone else having this issue or just me? I am running digikam in a jail and prior to that, it did work fine.
 
FWIW, I use digikam now and again (not in a Jail) and have not experienced any problems. FreeBSD 14.0. digikam 8.2.0_1 from quarterly packages.
 
Thanks for sharing, so it must be something on my end.

I just reverted back to using it outside of a jail and it still segfaults for me. I am trying to import my collection which is about 300G of images and videos, and would imagine digikam can handle as many images and videos as you want to throw at it. I don't believe the digikam database files were corrupt because I think I started anew anyways, but will check that again.
 
After clearing out my digikam database files and trying anew:

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--Type <RET> for more, q to quit, c to continue without paging--
Core was generated by `digikam'.
Program terminated with signal SIGSEGV, Segmentation fault.
Address not mapped to object.
#0 0x00000008043c5064 in ?? ()
[Current thread is 1 (LWP 117916)]
Click to expand...

Prior to that, there were some errors trying to read a gimp file.

I am using git annex to manage my files if that makes any difference (all files end up getting stored under .git and the original files are replaced with symlinks). I don't believe it should, but perhaps it does.
 
I am trying to run digikam 8.2.0 on FreeBSD 14 p5 and still getting segfaults. I have disabled aslr settings, but it still segfaults. It produces the same output as earlier, address not mapped to object. By disabling, I have set all aslr settings off and restarted digikam, but it still segfaults.

Are you doing anything in particular? Do you have any suggestions?

I shouldn't need to reboot with the ASLR settings disabled, correct?
 
Sorry, can't offer any advice. It just works for me - it's a completely stock installation. Just updated to 14.0-RELEASE-p5 and digikam 8.2.0_2 and everything still OK. The PC is 10+ years old so no issues with new hardware compatibility.
 
Ok, I too am on hardware that is 10+ years old :). I changed my aslr settings in my /boot/loader.conf and rebooted, but still encountered a segfault. This is the output when running digikam from a console:

Code: 
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
[ALSOFT] (EE) Failed to set real-time priority for thread: Operation not permitted (1)
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.xmlgui: Unhandled container to remove :  Digikam::DigikamApp
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
kf.sonnet.core: No language dictionaries for the language: "en_US"
zsh: segmentation fault (core dumped)  digikam

I am wondering if that perhaps it is related to the dictionary / language message?
 
Here's my working console output:

Code: 
QKqueueFileSystemWatcherEngine::addPaths: open: No such file or directory
kf.solid.backends.udisks2: Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
 "Not connected to D-Bus server"
kf.solid.backends.udisks2: Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
 "Not connected to D-Bus server"
kf.solid.backends.udisks2: Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
 "Not connected to D-Bus server"
kf.solid.backends.udisks2: Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
 "Not connected to D-Bus server"
digikam.metaengine: ExifTool process cannot be started ( "" )
[ALSOFT] (EE) Failed to set real-time priority for thread: Operation not permitted (1)
kf.solid.backends.udisks2: Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
 "Not connected to D-Bus server"
kf.solid.backends.udisks2: Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
 "Not connected to D-Bus server"
kf.xmlgui: Unhandled container to remove :  Digikam::DigikamApp
 
Lots of those messages are just useless noise that the developer should only output with a "verbose" option.

[ALSOFT] (EE) Failed to set real-time priority for thread: Operation not permitted (1)
Click to expand...

That one looks fairly bad.

From your gdb loading the core does 'backtrace' give anything useful?
Can you run digikam in gdb?
 
Running 'backtrace' doesn't produce anything useful, I'm running the stock version of digikam and I suppose I need to build it with debug symbols to get something useful. I tried building digikam, but haven't got the patience to build and replace a bunch of stock programs. The only other possibility is that I still see some ASLR settings set to 1 even though I didn't set them in my loader.conf. I will explicitly set those to 0, reboot and test. Setting those via sysctl and rerunning digikam didn't change anything.
 
Something has changed - I decided to try digikam today, using 8.4.0, the current version provided in packages and was able to scan my image collection and am in the process of detecting and labeling faces. I am presently running my workstation in a jail, so digikam appears to be happy in a jailed context. I scanned my entire image collection and had it detect faces and am working through that, so it is much more stable with this new version.

FYI, I also closed my original bug report.
 
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