From: Wei Lu wei.lu2@amd.com
[ 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 --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index eb1da83c9902..8cdd505784ed 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -125,6 +125,8 @@ 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; }