On Sun, Mar 28, 2021 at 01:13:35PM -0700, Cong Wang wrote: > On Sat, Mar 27, 2021 at 3:54 PM Alexei Starovoitov > <alexei.starovoitov@xxxxxxxxx> wrote: > > > > On Sat, Mar 27, 2021 at 3:08 PM Cong Wang <xiyou.wangcong@xxxxxxxxx> wrote: > > > BTFIDS vmlinux > > > FAILED unresolved symbol cubictcp_state > > > make: *** [Makefile:1199: vmlinux] Error 255 > > > > > > I suspect it is related to the kernel config or linker version. > > > > > > # grep TCP_CONG .config > > > CONFIG_TCP_CONG_ADVANCED=y > > > CONFIG_TCP_CONG_BIC=m > > > CONFIG_TCP_CONG_CUBIC=y > > .. > > > > > > # pahole --version > > > v1.17 > > > > That is the most likely reason. > > In lib/Kconfig.debug > > we have pahole >= 1.19 requirement for BTF in modules. > > Though your config has CUBIC=y I suspect something odd goes on. > > Could you please try the latest pahole 1.20 ? > > Sure, I will give it a try tomorrow, I am not in control of the CI I ran. Could you also check the CONFIG_DYNAMIC_FTRACE and also try 'y' if it is not set?
