[PATCH] mISDN: correctly handling failed allocation in fsm

Since kzalloc can be failed in memory pressure,
NULL dereference can be happened.

Signed-off-by: Insu Yun <redacted>
---
 drivers/isdn/mISDN/fsm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c
index 26477d4..3c3ffb0 100644
--- a/drivers/isdn/mISDN/fsm.c
+++ b/drivers/isdn/mISDN/fsm.c

@@ -34,6 +34,8 @@ mISDN_FsmNew(struct Fsm *fsm,
 
 	fsm->jumpmatrix = kzalloc(sizeof(FSMFNPTR) * fsm->state_count *
 				  fsm->event_count, GFP_KERNEL);
+	if (!fsm->jumpmatrix)
+		return;
 
 	for (i = 0; i < fncount; i++)
 		if ((fnlist[i].state >= fsm->state_count) ||

-- 
1.9.1

From: Insu Yun <redacted>
Date: Tue, 29 Dec 2015 16:41:33 -0500

Since kzalloc can be failed in memory pressure,
NULL dereference can be happened.

Signed-off-by: Insu Yun <redacted>

Similarly to your other mISDN patch you must propagate and handle
errors properly.