[Samba] Coredump when copying .docx file (4.15.1)

[Sen Haerens]

I'm copying from a Macbook (Big Sur 11.6) to an Arch Linux system (kernel
5.14.15), tested with Samba 4.15 and 4.15.1.

The copying hangs on the client and the share is unmounted. After
remounting the share it appears the file has been successfully copied. I do
not have access to Bugzilla, so posting here.

Here is the backtrace:
https://gist.github.com/SenH/2a611b30b8ed9ef7c234b7d14d75d074