mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 03:10:12 +00:00
x86/vdso: Set VM_MAYREAD for the vvar vma
The VVAR area can, obviously, be read; that is kind of the point. AFAIK this has no effect whatsoever unless x86 suddenly turns into a nommu architecture. Nonetheless, not setting it is suspicious. Reported-by: Nathan Lynch <Nathan_Lynch@mentor.com> Signed-off-by: Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/e4c8bf4bc2725bda22c4a4b7d0c82adcd8f8d9b8.1406330779.git.luto@amacapital.net Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
parent
da861e18ec
commit
ac379835e8
1 changed files with 1 additions and 1 deletions
|
@ -138,7 +138,7 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr)
|
|||
vma = _install_special_mapping(mm,
|
||||
addr,
|
||||
-image->sym_vvar_start,
|
||||
VM_READ,
|
||||
VM_READ|VM_MAYREAD,
|
||||
&vvar_mapping);
|
||||
|
||||
if (IS_ERR(vma)) {
|
||||
|
|
Loading…
Reference in a new issue