4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Wei Lu <[email protected]> [ 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 <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Felix Kuehling <[email protected]> Acked-by: Christian König <[email protected]> Signed-off-by: Oded Gabbay <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -123,6 +123,8 @@ struct kfd_process *kfd_get_process(cons return ERR_PTR(-EINVAL); process = find_process(thread); + if (!process) + return ERR_PTR(-EINVAL); return process; }
