Hi Qu, On Tue, 21 Apr 2020 09:33:56 +0800 Qu Wenruo wrote: > > On 2020/4/21 上午9:13, Stephen Rothwell wrote: > > > > That is a build test of the uapi headers to make syre that they are > > self contained. > > Any command to reproduce it? > As I want to avoid such problem in future development. You need to enable CONFIG_UAPI_HEADER_TEST (which allmodconfig does). -- Cheers, Stephen Rothwell