On Fri, 20 Mar 2015, David Ahern wrote: > Here's another data point: If I disable NUMA I don't see the problem. > Performance drops, but no NULL pointer splats which would have been panics. > > The 128 cpu ldom with NUMA enabled shows the problem every single time I do a > kernel compile (-j 128). With NUMA disabled I have done 3 allyesconfig > compiles without hitting the problem. I'll put the compiles into a loop while > I head out for dinner. > It might be helpful to enable CONFIG_DEBUG_SLAB if you're reproducing it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>