I am actually amazed this bug still exists in Bitdefender. It's been years and I keep seeing it, so maybe it's time to actually document it.
It's impossible to show/explain with a small dump, so can you do two things for me?
1 (do first!). Get me the kernel dump from C:\Windows (MEMORY.DMP). Upload it to a site of your choice and paste the link in your next reply (reply with link before following #2).
2. After #1 is done (remember, do #1 first), enable Driver Verifier so it will catch Bitdefender and I can explain it even further. Follow step #1 again to give me the verifier enabled kernel dump after the system crashes with verifier enabled.
The reason for doing #1 first is by default, kernel dumps are overwritten after each crash. It's best to keep it that way, and that's why it's important to do #1 first, so I also have a non-verifier enabled kernel dump to compare. With both a normal kernel dump/verifier enabled kernel dump, I can explain in as much detail to you as I can as to what is going wrong, and maybe even tell Bitdefender to fix their damn software.