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

[bugzilla-daemon at bugzilla.kernel.org]

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

Trek (trek00 at inbox.ru) changed:

           What    |Removed                     |Added
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                 CC|                            |trek00 at inbox.ru

--- Comment #7 from Trek (trek00 at 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)

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