[S390] Fix kprobes breakpoint handling.
In case of an illegal op the die notifier gets called with DIE_TRAP
instead of DIE_BPT first.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index aa0d7ee..f0e5a32 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -490,8 +490,15 @@
#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)