tree: https://github.com/jpirko/linux_mlxsw petrm_resilient head: f89604f4fb4130335e42ccf65a969ad0a0f58166 commit: f89604f4fb4130335e42ccf65a969ad0a0f58166 [5/5] debugfs for nexthop [xxx] config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/jpirko/linux_mlxsw/commit/f89604f4fb4130335e42ccf65a96... git remote add jpirko-mlxsw https://github.com/jpirko/linux_mlxsw git fetch --no-tags jpirko-mlxsw petrm_resilient git checkout f89604f4fb4130335e42ccf65a969ad0a0f58166 # 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 warnings (new ones prefixed by >>): 2646 | struct nexthop_debugfs *nexthop_debugfs_alloc(void) | ^~~~~~~~~~~~~~~~~~~~~ vim +/nexthop_debugfs_alloc +2646 net/ipv4/nexthop.c 2645 2647 { 2648 struct nexthop_debugfs *dfs; 2649 int err; 2650 2651 dfs = kzalloc(sizeof(*dfs), GFP_KERNEL); 2652 if (!dfs) 2653 return NULL; 2654 2655 dfs->ddir = debugfs_create_dir("nexthop", NULL); 2656 if (IS_ERR(dfs->ddir)) { 2657 err = PTR_ERR(dfs->ddir); 2658 goto err_create_dir; 2659 } 2660 2661 dfs->bucket_activity = debugfs_create_file("bucket_activity", S_IWUSR, 2662 dfs->ddir, NULL, 2663 &nexthop_debugfs_bucket_activity_ops); 2664 if (IS_ERR(dfs->bucket_activity)) { 2665 err = PTR_ERR(dfs->bucket_activity); 2666 goto err_create_bucket_activity; 2667 } 2668 2669 return 0; 2670 2671 err_create_bucket_activity: 2672 debugfs_remove_recursive(dfs->ddir); 2673 err_create_dir: 2674 kfree(dfs); 2675 return ERR_PTR(err); 2676 } 2677 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org