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Subject[PATCH] usb: gadget: add error handling for skb_realloc_headroom
Date
When skb_realloc_headroom fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling skb_realloc_headroom.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
---
drivers/usb/gadget/function/f_rndis.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c
index d48df36..17c164b 100644
--- a/drivers/usb/gadget/function/f_rndis.c
+++ b/drivers/usb/gadget/function/f_rndis.c
@@ -374,6 +374,9 @@ static struct sk_buff *rndis_add_header(struct gether *port,
return NULL;

skb2 = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type));
+ if (!skb2)
+ return NULL;
+
rndis_add_hdr(skb2);

dev_kfree_skb(skb);
--
2.7.4
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