From: Martin Krastev
Thanks for the catch. LGTM, with the following remarks:
1) Original design used erroneously pin_user_pages() in place of
pin_user_pages_fast(); you could just substitute pin_user_pages for
pin_user_pages_fast and call it a day, Please, consider that option
after readi
This patch includes changes below:
1) pin_user_pages() is unsafe without protection of mmap_lock,
fix it by calling mmap_read_lock() & mmap_read_unlock().
2) fix & refactor the incorrect exception handling procedure in
vmw_mksstat_add_ioctl().
Fixes: 7a7a933edd6c ("drm/vmwgfx: Introduce VMwa
