Hi Dmitry, Thank you for the patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Dmitry-Yakunin/bpf-cgroup-skb-im... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: x86_64-rhel-7.6 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): net/bpf/test_run.c: In function 'bpf_test_run': 26 | ret = bpf_cgroup_storages_alloc(storage, prog); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | bpf_cgroup_storage_alloc 68 | bpf_cgroup_storages_free(storage); | ^~~~~~~~~~~~~~~~~~~~~~~~ | bpf_cgroup_storage_free cc1: some warnings being treated as errors vim +26 net/bpf/test_run.c 17 18 static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat, 19 u32 *retval, u32 *time, bool xdp) 20 { 21 struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE] = { NULL }; 22 u64 time_start, time_spent = 0; 23 int ret = 0; 24 u32 i; 25 27 if (ret) 28 return ret; 29 30 if (!repeat) 31 repeat = 1; 32 33 rcu_read_lock(); 34 migrate_disable(); 35 time_start = ktime_get_ns(); 36 for (i = 0; i < repeat; i++) { 37 bpf_cgroup_storage_set(storage); 38 39 if (xdp) 40 *retval = bpf_prog_run_xdp(prog, ctx); 41 else 42 *retval = BPF_PROG_RUN(prog, ctx); 43 44 if (signal_pending(current)) { 45 ret = -EINTR; 46 break; 47 } 48 49 if (need_resched()) { 50 time_spent += ktime_get_ns() - time_start; 51 migrate_enable(); 52 rcu_read_unlock(); 53 54 cond_resched(); 55 56 rcu_read_lock(); 57 migrate_disable(); 58 time_start = ktime_get_ns(); 59 } 60 } 61 time_spent += ktime_get_ns() - time_start; 62 migrate_enable(); 63 rcu_read_unlock(); 64 65 do_div(time_spent, repeat); 66 *time = time_spent > U32_MAX ? U32_MAX : (u32)time_spent; 67 69 70 return ret; 71 } 72 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org