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6lowpan: ndisc: fix double read unlock

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This patch removes a double unlock case to accessing neighbour private
data.

Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
Reviewed-by: Stefan Schmidt <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Alexander Aring 2016-06-21 10:27:18 +02:00 • committed by Marcel Holtmann
commit 929946a471
1 changed files with 2 additions and 1 deletions
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3
net/6lowpan/ndisc.c
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@ -135,8 +135,9 @@ static int lowpan_ndisc_opt_addr_space(const struct net_device *dev,
read_unlock_bh(&neigh->lock);
addr_space += __ndisc_opt_addr_space(IEEE802154_SHORT_ADDR_LEN, 0);
*ha = ha_buf;
} else {
read_unlock_bh(&neigh->lock);
}
read_unlock_bh(&neigh->lock);
break;
case NDISC_NEIGHBOUR_ADVERTISEMENT:
case NDISC_NEIGHBOUR_SOLICITATION: