1 files changed, 1 insertions, 1 deletions

diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index 5d54f5f4e92..471bbaa65d1 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -202,7 +202,7 @@ sn2_global_tlb_purge(struct mm_struct *mm, unsigned long start,
                      unsigned long end, unsigned long nbits)
 {
         int i, opt, shub1, cnode, mynasid, cpu, lcpu = 0, nasid, flushed = 0;
-        int mymm = (mm == current->active_mm);
+        int mymm = (mm == current->active_mm && current->mm);
         volatile unsigned long *ptc0, *ptc1;
         unsigned long itc, itc2, flags, data0 = 0, data1 = 0, rr_value;
         short nasids[MAX_NUMNODES], nix;