[kvm-commits] [PATCH] s390: fixup for kvm

[Avi Kivity]

From: Carsten Otte <[EMAIL PROTECTED]>

Temporary commit, should appear in mainline shortly.

Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>

diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c
index 5efdfe9..d68b2ee 100644
--- a/arch/s390/lib/uaccess_pt.c
+++ b/arch/s390/lib/uaccess_pt.c
@@ -365,6 +365,9 @@ int futex_atomic_op_pt(int op, int __user *uaddr, int 
oparg, int *old)
 {
        int oldval = 0, newval, ret;
 
+       if (!current->mm)
+               return -EFAULT;
+
        spin_lock(&current->mm->page_table_lock);
        uaddr = (int __user *) __dat_user_addr((unsigned long) uaddr);
        if (!uaddr) {

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