[Bug 205497] Attempt to read amd gpu id causes a freeze

https://bugzilla.kernel.org/show_bug.cgi?id=205497

Trek (trek00@inbox.ru) changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |trek00@inbox.ru

--- Comment #7 from Trek (trek00@inbox.ru) --- as users reported, this bug should only affects kernels 5.2+

by default, radeontop calls amdgpu_read_mm_registers, amdgpu_query_info and amdgpu_query_sensor_info, but it can be forced by the command line to read BAR from /dev/mem

there is a kernel dump at https://github.com/clbr/radeontop/issues/87#issuecomment-529267244

thank you for the patch, but I cannot test it as my hardware is not affected (KAVERI)