From 78bfe0b5b67fe126ed98608e42e42fb6ed9aabd4 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Wed, 11 Jan 2006 11:47:34 -0800 Subject: [PATCH] IPoIB: Take dev->xmit_lock around mc_list accesses dev->mc_list accesses must be protected by dev->xmit_lock. Found by Eli Cohen . Signed-off-by: Michael S. Tsirkin Signed-off-by: Roland Dreier --- drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index 03b2ca64a40c..bf1c08cca8cb 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -827,7 +827,8 @@ void ipoib_mcast_restart_task(void *dev_ptr) ipoib_mcast_stop_thread(dev, 0); - spin_lock_irqsave(&priv->lock, flags); + spin_lock_irqsave(&dev->xmit_lock, flags); + spin_lock(&priv->lock); /* * Unfortunately, the networking core only gives us a list of all of @@ -899,7 +900,9 @@ void ipoib_mcast_restart_task(void *dev_ptr) list_add_tail(&mcast->list, &remove_list); } } - spin_unlock_irqrestore(&priv->lock, flags); + + spin_unlock(&priv->lock); + spin_unlock_irqrestore(&dev->xmit_lock, flags); /* We have to cancel outside of the spinlock */ list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {