Re: dma_ops_domain_alloc causes kernel 4.1.0-next-20150626+ panic

2015-07-01 Thread George Wang
On Tue, Jun 30, 2015 at 3:44 PM, Joerg Roedel wrote: > On Tue, Jun 30, 2015 at 11:55:24AM +0800, George Wang wrote: >> [ 11.734774] Call Trace: >> [ 11.735635] [] __mutex_lock_slowpath+0x91/0x120 >> [ 11.737676] [] ? ida_simple_get+0x98/0x100 >> [ 11.73968

Re: dma_ops_domain_alloc causes kernel 4.1.0-next-20150626+ panic

2015-06-30 Thread George Wang
On Tue, Jun 30, 2015 at 3:34 AM, Joerg Roedel wrote: > On Tue, Jun 30, 2015 at 01:44:34AM +0800, George Wang wrote: >> diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c >> index d3e5e9a..4f6da17 100644 >> --- a/drivers/iommu/amd_iommu.c >> +++

dma_ops_domain_alloc causes kernel 4.1.0-next-20150626+ panic

2015-06-30 Thread George Wang
Hi, I am trying to do some tests for kernel 4.1.0-next-20150626+, but panic in amd_iommu_attach_dev. After some digging inside amd_iommu.c, I found the suspecting code: diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index d3e5e9a..4f6da17 100644 --- a/drivers/iommu/amd_iommu.