tree: https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git net-next head: e58ce5220c61ae66b93dc2284557e7b57d28a00b commit: a1e0719ff64c063dc869f26a337c57518303cd3f [86/170] net/mlx5e: Increase indirection RQ table size to 256 config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git/commit/?i... git remote add saeed https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git git fetch --no-tags saeed net-next git checkout a1e0719ff64c063dc869f26a337c57518303cd3f # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): drivers/net/ethernet/mellanox/mlx5/core/en_tc.c: In function 'mlx5e_hairpin_fill_rqt_rqns': 540 | } | ^ vim +540 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c 77ab67b7f0f998a Or Gerlitz 2017-11-12 522 3f6d08d196b2d05 Or Gerlitz 2017-11-26 523 static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc) 3f6d08d196b2d05 Or Gerlitz 2017-11-26 524 { 3f6d08d196b2d05 Or Gerlitz 2017-11-26 525 u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn; 3f6d08d196b2d05 Or Gerlitz 2017-11-26 526 struct mlx5e_priv *priv = hp->func_priv; 3f6d08d196b2d05 Or Gerlitz 2017-11-26 527 int i, ix, sz = MLX5E_INDIR_RQT_SIZE; 3f6d08d196b2d05 Or Gerlitz 2017-11-26 528 3f6d08d196b2d05 Or Gerlitz 2017-11-26 529 mlx5e_build_default_indir_rqt(indirection_rqt, sz, 3f6d08d196b2d05 Or Gerlitz 2017-11-26 530 hp->num_channels); 3f6d08d196b2d05 Or Gerlitz 2017-11-26 531 3f6d08d196b2d05 Or Gerlitz 2017-11-26 532 for (i = 0; i < sz; i++) { 3f6d08d196b2d05 Or Gerlitz 2017-11-26 533 ix = i; bbeb53b8b2c92fd Aya Levin 2018-11-06 534 if (priv->rss_params.hfunc == ETH_RSS_HASH_XOR) 3f6d08d196b2d05 Or Gerlitz 2017-11-26 535 ix = mlx5e_bits_invert(i, ilog2(sz)); 3f6d08d196b2d05 Or Gerlitz 2017-11-26 536 ix = indirection_rqt[ix]; 3f6d08d196b2d05 Or Gerlitz 2017-11-26 537 rqn = hp->pair->rqn[ix]; 3f6d08d196b2d05 Or Gerlitz 2017-11-26 538 MLX5_SET(rqtc, rqtc, rq_num[i], rqn); 3f6d08d196b2d05 Or Gerlitz 2017-11-26 539 } 3f6d08d196b2d05 Or Gerlitz 2017-11-26 @540 } 3f6d08d196b2d05 Or Gerlitz 2017-11-26 541 :::::: The code at line 540 was first introduced by commit :::::: 3f6d08d196b2d05e36c86d7ccbbaa3431a431bed net/mlx5e: Add RSS support for hairpin :::::: TO: Or Gerlitz <ogerlitz(a)mellanox.com&gt; :::::: CC: Saeed Mahameed <saeedm(a)mellanox.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org