1 files changed, 15 insertions, 9 deletions

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 3cbb0dcf1f1d..f0e5a320e2ec 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -283,7 +283,7 @@ char *task_show_regs(struct task_struct *task, char *buffer)
         return buffer;
 }
 
-DEFINE_SPINLOCK(die_lock);
+static DEFINE_SPINLOCK(die_lock);
 
 void die(const char * str, struct pt_regs * regs, long err)
 {
@@ -364,8 +364,7 @@ void __kprobes do_single_step(struct pt_regs *regs)
                 force_sig(SIGTRAP, current);
 }
 
-asmlinkage void
-default_trap_handler(struct pt_regs * regs, long interruption_code)
+static void default_trap_handler(struct pt_regs * regs, long interruption_code)
 {
         if (regs->psw.mask & PSW_MASK_PSTATE) {
                 local_irq_enable();
@@ -376,7 +375,7 @@ default_trap_handler(struct pt_regs * regs, long interruption_code)
 }
 
 #define DO_ERROR_INFO(signr, str, name, sicode, siaddr) \
-asmlinkage void name(struct pt_regs * regs, long interruption_code) \
+static void name(struct pt_regs * regs, long interruption_code) \
 { \
         siginfo_t info; \
         info.si_signo = signr; \
@@ -442,7 +441,7 @@ do_fp_trap(struct pt_regs *regs, void __user *location,
                 "floating point exception", regs, &si);
 }
 
-asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
+static void illegal_op(struct pt_regs * regs, long interruption_code)
 {
         siginfo_t info;
         __u8 opcode[6];
@@ -491,8 +490,15 @@ asmlinkage void illegal_op(struct pt_regs * regs, long interruption_code)
 #endif
                 } else
                         signal = SIGILL;
-        } else
-                signal = SIGILL;
+        } else {
+                /*
+                 * If we get an illegal op in kernel mode, send it through the
+                 * kprobes notifier. If kprobes doesn't pick it up, SIGILL
+                 */
+                if (notify_die(DIE_BPT, "bpt", regs, interruption_code,
+                               3, SIGTRAP) != NOTIFY_STOP)
+                        signal = SIGILL;
+        }
 
 #ifdef CONFIG_MATHEMU
         if (signal == SIGFPE)
@@ -585,7 +591,7 @@ DO_ERROR_INFO(SIGILL, "specification exception", specification_exception,
               ILL_ILLOPN, get_check_address(regs));
 #endif
 
-asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
+static void data_exception(struct pt_regs * regs, long interruption_code)
 {
         __u16 __user *location;
         int signal = 0;
@@ -675,7 +681,7 @@ asmlinkage void data_exception(struct pt_regs * regs, long interruption_code)
         }
 }
 
-asmlinkage void space_switch_exception(struct pt_regs * regs, long int_code)
+static void space_switch_exception(struct pt_regs * regs, long int_code)
 {
         siginfo_t info;