Re: intel-iommu sysfs oops.

2017-02-24 Thread Dave Jones
On Fri, Feb 24, 2017 at 12:30:38AM +0100, Joerg Roedel wrote: > Hi Dave, > > On Thu, Feb 23, 2017 at 02:44:06PM -0500, Dave Jones wrote: > > cat /sys/devices/virtual/iommu/dmar0/intel-iommu/version > > > > Oops: [#1] PREEMPT SMP DEBUG_PAGEALLOC > > Thanks for the report, the problem

Re: intel-iommu sysfs oops.

2017-02-23 Thread Joerg Roedel
Hi Dave, On Thu, Feb 23, 2017 at 02:44:06PM -0500, Dave Jones wrote: > cat /sys/devices/virtual/iommu/dmar0/intel-iommu/version > > Oops: [#1] PREEMPT SMP DEBUG_PAGEALLOC Thanks for the report, the problem reproduces easily here. The diff below fixes the issue on Intel, AMD has the same pro

intel-iommu sysfs oops.

2017-02-23 Thread Dave Jones
cat /sys/devices/virtual/iommu/dmar0/intel-iommu/version Oops: [#1] PREEMPT SMP DEBUG_PAGEALLOC CPU: 2 PID: 1488 Comm: cat Not tainted 4.10.0-think+ #5 task: 8804ee440040 task.stack: c9d48000 RIP: 0010:intel_iommu_show_version+0x13/0x40 RSP: 0018:c9d4bcf0 EFLAGS: 00010286