Commits
Andy Lutomirski committed 92f8c688b2c
selftests/x86/sigreturn/32: Invalidate DS and ES when abusing the kernel commit 4d2fa82d98d2d296043a04eb517d7dbade5b13b8 upstream. If the kernel accidentally uses DS or ES while the user values are loaded, it will work fine for sane userspace. In the interest of simulating maximally insane userspace, make sigreturn_32 zero out DS and ES for the nasty parts so that inadvertent use of these segments will crash. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>