tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: e4755f6a2b98f251edcf63f98f416b5d76425f8c commit: 56fee14453059f894b018d08071826d47e634800 [2882/2882] cgroup: make cgroup_bpf_prog_attach work when cgroup2 is not mounted config: x86_64-randconfig-2002-20250501 (https://download.01.org/0day-ci/archive/20250702/202507021750.a3TifDd5-lkp@i...) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021750.a3TifDd5-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/202507021750.a3TifDd5-lkp@intel.com/ All warnings (new ones prefixed by >>): kernel/cgroup/cgroup.c:6217: warning: Function parameter or member 'f' not described in 'cgroup_get_from_file' kernel/cgroup/cgroup.c:6369: warning: Function parameter or member 'kargs' not described in 'cgroup_can_fork' kernel/cgroup/cgroup.c:6430: warning: Function parameter or member 'kargs' not described in 'cgroup_post_fork' kernel/cgroup/cgroup.c:6716: warning: Function parameter or member 'fd' not described in 'cgroup_get_from_fd'

...

kernel/cgroup/cgroup.c:6734: warning: Function parameter or member 'fd' not described in 'cgroup_get_from_fd_v2'

vim +6734 kernel/cgroup/cgroup.c 6729 6730 /** 6731 * same with cgroup_get_from_fd, only add cgrp_dfl_visible check 6732 */ 6733 struct cgroup *cgroup_get_from_fd_v2(int fd)

6734 { 6735 struct cgroup *cgrp = cgroup_v1v2_get_from_fd(fd); 6736 6737 if (IS_ERR(cgrp)) 6738 return ERR_CAST(cgrp); 6739 6740 if (!cgroup_on_dfl(cgrp)) { 6741 cgroup_put(cgrp); 6742 if (cgrp_dfl_visible) 6743 return ERR_PTR(-EBADF); 6744 6745 cgrp = &cgrp_dfl_root.cgrp; 6746 cgroup_get(cgrp); 6747 } 6748 return cgrp; 6749 } 6750 EXPORT_SYMBOL_GPL(cgroup_get_from_fd_v2); 6751

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