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sctp_getsockopt_local_addrs_old() in net/sctp/socket.c calls copy_to_user() while the spinlock addr_lock is held. this should not be done as copy_to_user() might sleep. the call to sctp_copy_laddrs_to_user() while holding the lock is also problematic as it calls copy_to_user() Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>