1 files changed, 7 insertions, 0 deletions

diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c
index ed5c7acdca70..aec225b402ae 100644
--- a/arch/ppc/kernel/traps.c
+++ b/arch/ppc/kernel/traps.c
@@ -805,6 +805,13 @@ void AltivecAssistException(struct pt_regs *regs)
         if (regs->msr & MSR_VEC)
                 giveup_altivec(current);
         preempt_enable();
+        if (!user_mode(regs)) {
+                printk(KERN_ERR "altivec assist exception in kernel mode"
+                       " at %lx\n", regs->nip);
+                debugger(regs);
+                die("altivec assist exception", regs, SIGFPE);
+                return;
+        }
 
         err = emulate_altivec(regs);
         if (err == 0) {