Re: [PATCH bpf-next v3 4/5] bpf, x86: Add jit support for private stack

[Yonghong Song <yonghong.song@linux.dev>]

On 9/29/24 6:02 AM, kernel test robot wrote:
> Hi Yonghong,
>
> kernel test robot noticed the following build errors:
>
> [auto build test ERROR on bpf-next/master]
>
> url:    https://github.com/intel-lab-lkp/linux/commits/Yonghong-Song/bpf-Allow-each-subprog-having-stack-size-of-512-bytes/20240927-074744
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
> patch link:    https://lore.kernel.org/r/20240926234526.1770736-1-yonghong.song%40linux.dev
> patch subject: [PATCH bpf-next v3 4/5] bpf, x86: Add jit support for private stack
> config: x86_64-buildonly-randconfig-004-20240929 (https://download.01.org/0day-ci/archive/20240929/202409292026.oUij9Xvr-lkp@intel.com/config)
> compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240929/202409292026.oUij9Xvr-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@intel.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202409292026.oUij9Xvr-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>>> ld.lld: error: undefined symbol: this_cpu_off

Leon Hwang has reported this error. Will fix in the next revision.

>     >>> referenced by bpf_jit_comp.c:31 (arch/x86/net/bpf_jit_comp.c:31)
>     >>>               arch/x86/net/bpf_jit_comp.o:(bpf_int_jit_compile) in archive vmlinux.a
>