On Mon, 13 Apr 2015, Aaro Koskinen wrote: > > Can you please backport this change to 4.0 ASAP, preferably before it > > hits the actual release? > > > > It fixes a 3.19->4.0 regression, likely affecting all FPU processors and > > wreaking havoc. For example I came across a system that boots 3.19 just > > fine, but hangs in `ypbind' with 4.0. It works again with this change > > applied. > > It seems this patch, and some other fixes for fatal regressions, > missed 4.0, although they were reported right after the -rc1 was out. > > Basically 4.0 is unusable for MIPS users. I've had some success with the "nofpu" kernel parameter; in fact I didn't notice the problem as I was testing full FPU emulation and until I enabled the FPU hardware. You may try the option temporarily as a workaround. Hopefully the fix makes it through to 4.0.1 or suchlike. Maciej