SUP-761 sbd_flush_data_cache() call against closed zvol results in NULL pointer deref in zil_commit() call further down the stack
NEX-1635 Codenomicon: SMB2 TC: 157974 Panic in smb2_create/smb_decode_sd
SUP-761 sbd_flush_data_cache() call against closed zvol results in NULL pointer deref in zil_commit() call further down the stack