Thanks! A couple more follow-on fixes for sg race conditions are now
in the linux-next tree (via linux-scsi), in case it's appropriate to
also queue these for linux-stable trees now or after 4.14 release:
commit 8d26f491116feaa0b16de370b6a7ba40a40fa0b4
Author: Todd Poynor [off-list ref]
Date: Tue Aug 15 21:48:43 2017 -0700
scsi: sg: recheck MMAP_IO request length with lock held
commit 6a8dadcca81fceff9976e8828cceb072873b7bd5
Author: Todd Poynor [off-list ref]
Date: Tue Aug 15 22:41:08 2017 -0700
scsi: sg: protect against races between mmap() and SG_SET_RESERVED_SIZE
Todd