Re: [RFC PATCH v9 05/11] bpf: net_sched: Support implementation of Qdisc_ops in bpf

[kernel test robot <lkp@intel.com>]

Hi Amery,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]
[also build test ERROR on net-next/main next-20240712]
[cannot apply to horms-ipvs/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Amery-Hung/bpf-Support-getting-referenced-kptr-from-struct_ops-argument/20240715-020211
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20240714175130.4051012-6-amery.hung%40bytedance.com
patch subject: [RFC PATCH v9 05/11] bpf: net_sched: Support implementation of Qdisc_ops in bpf
config: i386-randconfig-003-20240715 (https://download.01.org/0day-ci/archive/20240715/202407151312.caDCQqr8-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240715/202407151312.caDCQqr8-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/202407151312.caDCQqr8-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: register_qdisc
   >>> referenced by bpf_qdisc.c:231 (net/sched/bpf_qdisc.c:231)
   >>>               net/sched/bpf_qdisc.o:(bpf_qdisc_reg) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: unregister_qdisc
   >>> referenced by bpf_qdisc.c:236 (net/sched/bpf_qdisc.c:236)
   >>>               net/sched/bpf_qdisc.o:(bpf_qdisc_unreg) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: qdisc_watchdog_init
   >>> referenced by bpf_qdisc.c:44 (net/sched/bpf_qdisc.c:44)
   >>>               net/sched/bpf_qdisc.o:(bpf_qdisc_init_op) in archive vmlinux.a
--
>> ld.lld: error: undefined symbol: qdisc_watchdog_cancel
   >>> referenced by bpf_qdisc.c:52 (net/sched/bpf_qdisc.c:52)
   >>>               net/sched/bpf_qdisc.o:(bpf_qdisc_reset_op) in archive vmlinux.a
   >>> referenced by bpf_qdisc.c:59 (net/sched/bpf_qdisc.c:59)
   >>>               net/sched/bpf_qdisc.o:(bpf_qdisc_destroy_op) in archive vmlinux.a

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