Comment 1 for bug 1724912

This requires two commits, 594a30fb12424717a41c62323d2a8bf167dbccad and cc6afe2240298049585e86b1ade85efc8a7f225d, which are already upstream and will be included in the 4.14 kernel; so this SRU is required only for artful, as b-series will have the needed patches already.