* Re: [RFC PATCH 1/1] netlink: Add Netlink process event for cgroup migration
[not found] <20260407172339.2017158-2-prakash.sangappa@oracle.com>
@ 2026-04-14 8:49 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-04-14 8:49 UTC (permalink / raw)
To: Prakash Sangappa; +Cc: llvm, oe-kbuild-all
Hi Prakash,
[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:
[auto build test ERROR on tj-cgroup/for-next]
[also build test ERROR on net/main net-next/main linus/master v7.0 next-20260413]
[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/Prakash-Sangappa/netlink-Add-Netlink-process-event-for-cgroup-migration/20260413-212045
base: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next
patch link: https://lore.kernel.org/r/20260407172339.2017158-2-prakash.sangappa%40oracle.com
patch subject: [RFC PATCH 1/1] netlink: Add Netlink process event for cgroup migration
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20260414/202604141600.VBaiiHS6-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260414/202604141600.VBaiiHS6-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/202604141600.VBaiiHS6-lkp@intel.com/
All errors (new ones prefixed by >>):
>> kernel/cgroup/cgroup.c:2985:3: error: call to undeclared function 'proc_cgroup_migrate_connector'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2985 | proc_cgroup_migrate_connector(leader, dst_cgrp);
| ^
kernel/cgroup/cgroup.c:2985:3: note: did you mean 'proc_cgrp_migrate_connector'?
include/linux/cn_proc.h:58:20: note: 'proc_cgrp_migrate_connector' declared here
58 | static inline void proc_cgrp_migrate_connector(struct task_struct *task)
| ^
1 error generated.
--
>> kernel/cgroup/cgroup-v1.c:153:5: error: call to undeclared function 'proc_cgroup_migrate_connector'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
153 | proc_cgroup_migrate_connector(task, to);
| ^
kernel/cgroup/cgroup-v1.c:153:5: note: did you mean 'proc_cgrp_migrate_connector'?
include/linux/cn_proc.h:58:20: note: 'proc_cgrp_migrate_connector' declared here
58 | static inline void proc_cgrp_migrate_connector(struct task_struct *task)
| ^
1 error generated.
vim +/proc_cgroup_migrate_connector +2985 kernel/cgroup/cgroup.c
2951
2952 /**
2953 * cgroup_attach_task - attach a task or a whole threadgroup to a cgroup
2954 * @dst_cgrp: the cgroup to attach to
2955 * @leader: the task or the leader of the threadgroup to be attached
2956 * @threadgroup: attach the whole threadgroup?
2957 *
2958 * Call holding cgroup_mutex and cgroup_threadgroup_rwsem.
2959 */
2960 int cgroup_attach_task(struct cgroup *dst_cgrp, struct task_struct *leader,
2961 bool threadgroup)
2962 {
2963 DEFINE_CGROUP_MGCTX(mgctx);
2964 struct task_struct *task;
2965 int ret = 0;
2966
2967 /* look up all src csets */
2968 spin_lock_irq(&css_set_lock);
2969 task = leader;
2970 do {
2971 cgroup_migrate_add_src(task_css_set(task), dst_cgrp, &mgctx);
2972 if (!threadgroup)
2973 break;
2974 } while_each_thread(leader, task);
2975 spin_unlock_irq(&css_set_lock);
2976
2977 /* prepare dst csets and commit */
2978 ret = cgroup_migrate_prepare_dst(&mgctx);
2979 if (!ret)
2980 ret = cgroup_migrate(leader, threadgroup, &mgctx);
2981
2982 cgroup_migrate_finish(&mgctx);
2983
2984 if (!ret) {
> 2985 proc_cgroup_migrate_connector(leader, dst_cgrp);
2986 TRACE_CGROUP_PATH(attach_task, dst_cgrp, leader, threadgroup);
2987 }
2988
2989 return ret;
2990 }
2991
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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