On Wed, Feb 03, 2021 at 02:55:41PM -0800, Yu-cheng Yu wrote:
There was no more caller passing vm_flags to do_mmap(), and vm_flags was
removed from the function's input by:
commit 45e55300f114 ("mm: remove unnecessary wrapper function do_mmap_pgoff()").
There is a new user now. Shadow stack allocation passes VM_SHSTK to
do_mmap(). Re-introduce vm_flags to do_mmap(), but without the old wrapper
do_mmap_pgoff(). Instead, make all callers of the wrapper pass a zero
vm_flags to do_mmap().
Signed-off-by: Yu-cheng Yu <redacted>
Reviewed-by: Kees Cook <redacted>
--
Kees Cook