Re: [PATCH v19 19/25] mm: Re-introduce vm_flags to do_mmap()
From: Kees Cook <hidden>
Date: 2021-02-04 20:31:59
Also in:
linux-arch, linux-doc, linux-mm, lkml
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