1 files changed, 20 insertions, 3 deletions

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 6807cb1e76d..4ef9f0d04e5 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -25,7 +25,7 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/cacheflush.h>
 #include <asm/system.h>
 #include <asm/unistd.h>
@@ -355,9 +355,24 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
         pc = (void __user *)instruction_pointer(regs);
 
         if (processor_mode(regs) == SVC_MODE) {
-                instr = *(u32 *) pc;
+#ifdef CONFIG_THUMB2_KERNEL
+                if (thumb_mode(regs)) {
+                        instr = ((u16 *)pc)[0];
+                        if (is_wide_instruction(instr)) {
+                                instr <<= 16;
+                                instr |= ((u16 *)pc)[1];
+                        }
+                } else
+#endif
+                        instr = *(u32 *) pc;
         } else if (thumb_mode(regs)) {
                 get_user(instr, (u16 __user *)pc);
+                if (is_wide_instruction(instr)) {
+                        unsigned int instr2;
+                        get_user(instr2, (u16 __user *)pc+1);
+                        instr <<= 16;
+                        instr |= instr2;
+                }
         } else {
                 get_user(instr, (u32 __user *)pc);
         }
@@ -451,7 +466,9 @@ do_cache_op(unsigned long start, unsigned long end, int flags)
                 if (end > vma->vm_end)
                         end = vma->vm_end;
 
-                flush_cache_user_range(vma, start, end);
+                up_read(&mm->mmap_sem);
+                flush_cache_user_range(start, end);
+                return;
         }
         up_read(&mm->mmap_sem);
 }