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drm/amdkfd: Fix error codes in kfd_get_process

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[ Upstream commit e47cb828eb3fca3e8999a0b9aa053dda18552071 ]

Return ERR_PTR(-EINVAL) if kfd_get_process fails to find the process.
This fixes kernel oopses when a child process calls KFD ioctls with
a file descriptor inherited from the parent process.

Signed-off-by: Wei Lu <wei.lu2@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wei Lu 2018-07-11 22:32:47 -04:00 committed by Greg Kroah-Hartman
parent bb9dcbf97a
commit bb2874bba8
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@ -123,6 +123,8 @@ struct kfd_process *kfd_get_process(const struct task_struct *thread)
return ERR_PTR(-EINVAL);
process = find_process(thread);
if (!process)
return ERR_PTR(-EINVAL);
return process;
}