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1457cc4cfb
rxrpc_fill_out_ack() needs to be passed the connection pointer from its caller rather than using call->conn as the call may be disconnected in parallel with it, clearing call->conn, leading to: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 IP: rxrpc_send_ack_packet+0x231/0x6a4 Signed-off-by: David Howells <dhowells@redhat.com>