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staging/rtl8192u - check for skb alloc failure

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It's possible for dev_alloc_skb() to fail. Propagate the error to the caller,
so it can clean up and drop the packet. The sender should end up retransmitting
the packet, hopefully at a time we're prepared to allocate skb's again.

Reported-By: Nicholas Krause <xerofoify@gmail.com>
Signed-Off-By: Valdis Kletnieks <valdis.kletnieks@vt.edu>

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Valdis Kletnieks 2014-09-08 18:09:48 -04:00 committed by Greg Kroah-Hartman
parent 9f87b44720
commit 79d99c305f
1 changed files with 2 additions and 0 deletions
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drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
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@ -847,6 +847,8 @@ static u8 parse_subframe(struct sk_buff *skb,
#else
/* Allocate new skb for releasing to upper layer */
sub_skb = dev_alloc_skb(nSubframe_Length + 12);
if (!sub_skb)
return 0;
skb_reserve(sub_skb, 12);
data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
memcpy(data_ptr, skb->data, nSubframe_Length);