Keepassxc: Endless Storing when drive is removed

[0xpr03]

Expected Behavior

Program errors out and can be exited normally.

Current Behavior

Program shows "Couldn't save file, backup was saved under /temp/XXX" and interates in the XXX filename every half second. (Endless backup store)

Possible Solution

Worked in pre 2.4 Keepass

Steps to Reproduce

1. Open Keepass DB in a container (Veracrypt)
2. Unmount container
3. Try closing keepass

Context

KeePass has to be killed (-9), as it won't close otherwise.

Debug Info

KeePassXC - Version 2.4.1
Revision: 7bafe65

Qt 5.9.5
Debugging mode is disabled.

Operating system: Ubuntu 18.04.2 LTS
CPU architecture: x86_64
Kernel: linux 4.15.0-47-generic

Enabled extensions:

• Auto-Type
• Browser Integration
• SSH Agent
• KeeShare (only unsigned sharing)
• YubiKey

Cryptographic libraries:
libgcrypt 1.8.1

[droidmonkey]

When you are exiting KeePassXC, is there an asterisk next to the file name? (ie, there are pending changes to be saved)

[0xpr03]

Yes, although I don't change anything knowingly.

[0xpr03]

Could be the browser Plugin or anything like that, I'm only using the entries, not editing.

[droidmonkey]

You should be able to use safe file saves, please try enabling that in settings and see if that works for you.

[0xpr03]

Hey, I'm currently trying to find that option.
I've made a video showing the bug live (and invested a little time editing it correctly ^^). When recording I also realized that the bug only triggers if you have a second database open at the same time and then try to close the first one.
The zip file contains the video as github apparently doesn't like mp4 but .zip..
keepass_bug_save_disk_removal.zip

[0xpr03]

Just to clarify: I don't expect keepass to save in that situation. The bug is that it starts creating a huge amount of /tmp/XXX files and consumes the CPU when I just want to close the tab. Also you can't close it anymore via the X-Button.

[droidmonkey]

OK found the problem.

[owlnical]

Thanks for fixing this bug, and for keeping this software up to date. I use it everyday. Will download the latest release ASAP!