On Fri, Jan 13, 2017 at 10:32:47AM +0000, Alan J. Wylie wrote: > # dmesg | tail > ... > [ 141.553455] nr: 0->16, cur: 5->5, buffers: 16->16 > [ 141.553461] copied: 0, count:2147479552, idx:5, offs:0
OK, that looks like pipe_advance() fencepost (hopefully) dealt with in the lib/iov_iter.c patch I've just posted. I'm going down right now, but if you have a box you are not too fond of, it would be nice if you tried that one. Warning: the patch had been written in a barely awake state, and is completely untested. Treat accordingly...
