On Wed, Jan 17, 2018 at 08:34:22AM +0100, Thomas Gleixner wrote: > Can you trace the matrix allocations from the very beginning or tell me how > to reproduce. I'd like to figure out why this is happening.
Sure, I'll get the irq_matrix events. I reproduce this on a machine with 112 CPUs and 3 NVMe controllers. The first two NVMe want 112 MSI-x vectors, and the last only 31 vectors. The test runs 'modprobe nvme' and 'modprobe -r nvme' in a loop with 10 second delay between each step. Repro occurs within a few iterations, sometimes already broken after the initial boot.
