On 2018-12-20 6:45 a.m., Mikhail Gavrilov wrote: > On Thu, 20 Dec 2018 at 16:17, StDenis, Tom <Tom.StDenis@xxxxxxx> wrote: >> >> Well yup the kernel is not letting you open the files: >> >> >> As sudo/root you should be able to open these files with umr. What >> happens if you just open a shell as root and run it? >> > > [root@localhost ~]# touch /sys/kernel/debug/dri/0/amdgpu_ring_gfx > [root@localhost ~]# cat /sys/kernel/debug/dri/0/amdgpu_ring_gfx > cat: /sys/kernel/debug/dri/0/amdgpu_ring_gfx: Operation not permitted > [root@localhost ~]# ls -laZ /sys/kernel/debug/dri/0/amdgpu_ring_gfx > -r--r--r--. 1 root root system_u:object_r:debugfs_t:s0 8204 Dec 20 > 16:31 /sys/kernel/debug/dri/0/amdgpu_ring_gfx > [root@localhost ~]# getenforce > Permissive > [root@localhost ~]# /home/mikhail/packaging-work/umr/build/src/app/umr > -O verbose,halt_waves -wa > Cannot seek to MMIO address: Bad file descriptor > [ERROR]: Could not open ring debugfs fileSegmentation fault (core dumped) > > I am already tried launch `umr` under root user, but kernel don't let > open `amdgpu_ring_gfx` again. > > What else kernel options I should to check? > > I am also attached current kernel config to this message. I can replicate this by doing chmod u+s umr sudo ./umr -R gfx[.] You need to remove the u+s bit you are literally not running umr as root! :-) Tom > > -- > Best Regards, > Mike Gavrilov. >
