On Wed, Sep 30, 2020 at 10:13:39PM -0700, Yonghong Song wrote: > Michal reported a build failure likes below: > BTFIDS vmlinux > FAILED unresolved symbol tcp_timewait_sock > make[1]: *** [/.../linux-5.9-rc7/Makefile:1176: vmlinux] Error 255 > > This error can be triggered when config has CONFIG_NET enabled > but CONFIG_INET disabled. In this case, there is no user of > structs inet_timewait_sock and tcp_timewait_sock and hence vmlinux BTF > types are not generated for these two structures. > > To fix the problem, let us force BTF generation for these two > structures with BTF_TYPE_EMIT. Acked-by: Martin KaFai Lau <kafai@xxxxxx>
