DEBUG_LOCKS_WARN_ON(sem->owner != ((struct task_struct *)(1UL << 0)))

[Michel Dänzer]

On 2018-07-12 02:43 AM, Felix Kuehling wrote:
> Kent just caught a similar backtrace in one of our KFD pre-submission
> tests (see below)

Yeah, looks the same.


> Neither KFD nor AMDGPU are implied in the backtrace. Is this a
> regression in the kernel itself? amd-kfd-staging is currently based on
> 4.18-rc1.

FWIW, I saw this with 4.17 based kernels already, and I didn't have
CONFIG_DEBUG_RWSEMS enabled with older kernels, so I'm not sure it's a
(recent) regression.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer