From 016930b88a1d6eb6e6b3287d593e13ca06986acc Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Thu, 15 Sep 2016 14:39:22 +0200 Subject: [PATCH] s390/qeth: use ip_lock for hsuid configuration qeth_l3_dev_hsuid_store() changes the ip hash table, which requires the ip_lock. Signed-off-by: Ursula Braun Signed-off-by: David S. Miller --- drivers/s390/net/qeth_l3_sys.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c index 65645b11fc19..0e00a5ce0f00 100644 --- a/drivers/s390/net/qeth_l3_sys.c +++ b/drivers/s390/net/qeth_l3_sys.c @@ -297,7 +297,9 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev, addr->u.a6.pfxlen = 0; addr->type = QETH_IP_TYPE_NORMAL; + spin_lock_bh(&card->ip_lock); qeth_l3_delete_ip(card, addr); + spin_unlock_bh(&card->ip_lock); kfree(addr); } @@ -329,7 +331,10 @@ static ssize_t qeth_l3_dev_hsuid_store(struct device *dev, addr->type = QETH_IP_TYPE_NORMAL; } else return -ENOMEM; + + spin_lock_bh(&card->ip_lock); qeth_l3_add_ip(card, addr); + spin_unlock_bh(&card->ip_lock); kfree(addr); return count; -- 2.30.2