1 files changed, 14 insertions, 3 deletions

diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index bd8601601afa..7543ddbdadb2 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -135,7 +135,7 @@ asmlinkage int lookup_fault(unsigned long pc, unsigned long ret_pc,
 
         default:
                 break;
-        };
+        }
 
         memset(&regs, 0, sizeof (regs));
         regs.pc = pc;
@@ -240,11 +240,10 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
          * only copy the information from the master page table,
          * nothing more.
          */
+        code = SEGV_MAPERR;
         if (!ARCH_SUN4C && address >= TASK_SIZE)
                 goto vmalloc_fault;
 
-        code = SEGV_MAPERR;
-
         /*
          * If we're in an interrupt or have no user
          * context, we must not take the fault..
@@ -539,6 +538,12 @@ do_sigbus:
         __do_fault_siginfo(BUS_ADRERR, SIGBUS, tsk->thread.kregs, address);
 }
 
+static void check_stack_aligned(unsigned long sp)
+{
+        if (sp & 0x7UL)
+                force_sig(SIGILL, current);
+}
+
 void window_overflow_fault(void)
 {
         unsigned long sp;
@@ -547,6 +552,8 @@ void window_overflow_fault(void)
         if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
                 force_user_fault(sp + 0x38, 1);
         force_user_fault(sp, 1);
+
+        check_stack_aligned(sp);
 }
 
 void window_underflow_fault(unsigned long sp)
@@ -554,6 +561,8 @@ void window_underflow_fault(unsigned long sp)
         if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
                 force_user_fault(sp + 0x38, 0);
         force_user_fault(sp, 0);
+
+        check_stack_aligned(sp);
 }
 
 void window_ret_fault(struct pt_regs *regs)
@@ -564,4 +573,6 @@ void window_ret_fault(struct pt_regs *regs)
         if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
                 force_user_fault(sp + 0x38, 0);
         force_user_fault(sp, 0);
+
+        check_stack_aligned(sp);
 }