tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: a29fc03bd0ddaf7388cf31604ef5bd9807585109 commit: ebd40bbe89d81531c7df459a827d7608c3de57bc [3098/3098] bpf-rvi: Add bpf_mem_cgroup_from_task() kfunc config: x86_64-randconfig-001-20251104 (https://download.01.org/0day-ci/archive/20251104/202511040801.Uk13PqHb-lkp@i...) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251104/202511040801.Uk13PqHb-lkp@i...) 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/202511040801.Uk13PqHb-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

kernel/bpf-rvi/common_kfuncs.c:12:32: warning: no previous prototype for 'bpf_mem_cgroup_from_task' [-Wmissing-prototypes] 12 | __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) | ^~~~~~~~~~~~~~~~~~~~~~~~

vim +/bpf_mem_cgroup_from_task +12 kernel/bpf-rvi/common_kfuncs.c 7 8 /* 9 * Common support kfuncs 10 */ 11

12 __bpf_kfunc struct mem_cgroup *bpf_mem_cgroup_from_task(struct task_struct *p) 13 { 14 return mem_cgroup_from_task(p); 15 } 16

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