Bug#1100604: Acknowledgement (PANIC: assert failed at source3/smbd/smb2_oplock.c(156): sconn->oplocks.exclusive_open>=0)

[Andre Heider]

Same issue here, it's crashing and restarting all the time upon 
accessing a share...

But it seems v4.21 is gone from the archive for sid, where can I get 
that now?

Cheers,
Andre