[ewg] problem with ipoib_mcast_fix_ip_ib_mc_map_to_2_6_24.patch

[Eli Cohen]

This text is from https://bugs.openfabrics.org/show_bug.cgi?id=1926

The source of this problem is this commit by Jason Gunthorpe:
c12481586c4ba09cb88dc2090c67fdce7c856cde

This commit fixes a deficiency in ip_ib_mc_map() by changing the
multicast address in dev->mc_list. However, doing so causes a
subsequent call to dev_mc_delete() to fail to decrease dmi->dmi_users
and when to the appearance
of the following messages:
Feb 11 10:27:17 sw226 kernel: dev_mc_discard: multicast leakage! dmi_users=1

Jason,
can you look at this?