Commit-ID: eb099e5bc5457c42043e57cf0f4ce574669b9697 Gitweb: http://git.kernel.org/tip/eb099e5bc5457c42043e57cf0f4ce574669b9697 Author: Dave Hansen <[email protected]> AuthorDate: Sun, 7 Jun 2015 11:37:02 -0700 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 9 Jun 2015 12:24:31 +0200
x86/mpx: Restrict the mmap() size check to bounds tables The comment and code here are confusing. We do not currently allocate the bounds directory in the kernel. Signed-off-by: Dave Hansen <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Dave Hansen <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]> --- arch/x86/mm/mpx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index 47e4a856..d6e02f3 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -46,8 +46,8 @@ static unsigned long mpx_mmap(unsigned long len) vm_flags_t vm_flags; struct vm_area_struct *vma; - /* Only bounds table and bounds directory can be allocated here */ - if (len != MPX_BD_SIZE_BYTES && len != MPX_BT_SIZE_BYTES) + /* Only bounds table can be allocated here */ + if (len != MPX_BT_SIZE_BYTES) return -EINVAL; down_write(&mm->mmap_sem); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
