On Sun, Jun 26, 2016 at 02:04:40AM +0900, Tetsuo Handa wrote: > It seems to me that somebody is using ALLOC_NO_WATERMARKS (with possibly > __GFP_NOWARN), but I don't know how to identify such callers. Maybe print > backtrace from __alloc_pages_slowpath() when ALLOC_NO_WATERMARKS is used?
Wouldn't this create too much output for slow serial console? Or is this case supposed to be triggered rarely? This crash testing is pretty painful but I can try it tomorrow if there is no better idea. Johannes