On Tue, Apr 05, 2022 at 04:04:56AM -0700, Chang S. Bae wrote:
From: Yang Zhong yang.zhong@intel.com
This is backport for 5.16
Upstream commit 063452fd94d153d4eb38ad58f210f3d37a09cca4
ARCH_REQ_XCOMP_PERM is supposed to add the requested feature to the permission bitmap of thread_group_leader()->fpu. But the code overwrites the bitmap with the requested feature bit only rather than adding it.
Fix the code to add the requested feature bit to the master bitmask.
Fixes: db8268df0983 ("x86/arch_prctl: Add controls for dynamic XSTATE components") Signed-off-by: Yang Zhong yang.zhong@intel.com Signed-off-by: Chang S. Bae chang.seok.bae@intel.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Cc: Paolo Bonzini bonzini@gnu.org Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220129173647.27981-2-chang.seok.bae@intel.com [chang: Backport for 5.16] Signed-off-by: Chang S. Bae chang.seok.bae@intel.com
arch/x86/kernel/fpu/xstate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Now queued up, thanks.
greg k-h