When adding or deleting from the source list make sure to find matches
by comparing against the new source address, not the group address.
Also, check each addr in the list rather than just the first one.
And, finally, only delete from list when there's a match rather than
vice-versa. Drop the effort to keep list sorted, since it's not done
on full-state api and can create an sl_addr entry that the delta api
won't be able to delete. Without these fixes sl_count can be corrupted
which can allow for kernel memory corruption.
Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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