On 12/05/2020 16:16, Joerg Roedel wrote: > Hi Guillaume, > > thanks for the report! > > On Tue, May 12, 2020 at 07:05:13AM +0100, Guillaume Tucker wrote: >>> Summary: >>> Start: 4b20e7462caa6 Add linux-next specific files for 20200511 >>> Plain log: https://storage.kernelci.org/next/master/next-20200511/arm/tegra_defconfig/gcc-8/lab-collabora/baseline-tegra124-jetson-tk1.txt >>> HTML log: https://storage.kernelci.org/next/master/next-20200511/arm/tegra_defconfig/gcc-8/lab-collabora/baseline-tegra124-jetson-tk1.html >>> Result: 3eeeb45c6d044 iommu: Remove add_device()/remove_device() code-paths > > Okay, so it faults at > > PC is at __iommu_probe_device+0x20/0x1b8 > > Can you translate that for me into a code-line, please? That would help > finding the issue. Sure, sorry for the delay. I've built my own image as vmlinux is not stored by kernelci and reproduced the problem: https://lava.collabora.co.uk/scheduler/job/2403076#L544 which this time gave me: <4>[ 2.540558] PC is at iommu_probe_device+0x1c/0x15c <4>[ 2.545606] LR is at of_iommu_configure+0x15c/0x1c4 <4>[ 2.550736] pc : [<c092e0e4>] lr : [<c0932c0c>] psr: a0000013 which in turn brings us to: (gdb) l *0xc092e0e4 0xc092e0e4 is in iommu_probe_device (drivers/iommu/iommu.c:232). 227 int ret; 228 229 if (!dev_iommu_get(dev)) 230 return -ENOMEM; 231 232 if (!try_module_get(ops->owner)) { 233 ret = -EINVAL; 234 goto err_out; 235 } 236 Hope this helps. Guillaume
