This is a note to let you know that I've just added the patch titled s390/mm: Add NULL pointer check to crst_table_free() base_crst_free() to the 6.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: s390-mm-add-null-pointer-check-to-crst_table_free-base_crst_free.patch and it can be found in the queue-6.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it.