drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c:1170:1: warning: stack frame size (1168) exceeds limit (1024) in 'dr_ste_v0_build_eth_ipv6_l3_l4_tag'
From: kernel test robot
Date: Fri Feb 17 2023 - 00:27:09 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 3ac88fa4605ec98e545fb3ad0154f575fda2de5f
commit: 7766c9b922febe18b4eb124eb731dd9a1ec71373 net/mlx5: DR, Add missing reserved fields to dr_match_param
date: 1 year, 2 months ago
config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20230217/202302171359.vvB4yivq-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7766c9b922febe18b4eb124eb731dd9a1ec71373
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 7766c9b922febe18b4eb124eb731dd9a1ec71373
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/net/ethernet/mellanox/ drivers/platform/ drivers/staging/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202302171359.vvB4yivq-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
>> drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c:1170:1: warning: stack frame size (1168) exceeds limit (1024) in 'dr_ste_v0_build_eth_ipv6_l3_l4_tag' [-Wframe-larger-than]
dr_ste_v0_build_eth_ipv6_l3_l4_tag(struct mlx5dr_match_param *value,
^
56/1168 (4.79%) spills, 1112/1168 (95.21%) variables
1 warning generated.
vim +/dr_ste_v0_build_eth_ipv6_l3_l4_tag +1170 drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1168
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1169 static int
d65e841de80375 Yevgeny Kliteynik 2020-11-19 @1170 dr_ste_v0_build_eth_ipv6_l3_l4_tag(struct mlx5dr_match_param *value,
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1171 struct mlx5dr_ste_build *sb,
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1172 u8 *tag)
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1173 {
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1174 struct mlx5dr_match_spec *spec = sb->inner ? &value->inner : &value->outer;
0733535d59e154 Yevgeny Kliteynik 2021-07-04 1175 struct mlx5dr_match_misc *misc = &value->misc;
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1176
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1177 DR_STE_SET_TAG(eth_l4, tag, dst_port, spec, tcp_dport);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1178 DR_STE_SET_TAG(eth_l4, tag, src_port, spec, tcp_sport);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1179 DR_STE_SET_TAG(eth_l4, tag, dst_port, spec, udp_dport);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1180 DR_STE_SET_TAG(eth_l4, tag, src_port, spec, udp_sport);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1181 DR_STE_SET_TAG(eth_l4, tag, protocol, spec, ip_protocol);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1182 DR_STE_SET_TAG(eth_l4, tag, fragmented, spec, frag);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1183 DR_STE_SET_TAG(eth_l4, tag, dscp, spec, ip_dscp);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1184 DR_STE_SET_TAG(eth_l4, tag, ecn, spec, ip_ecn);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1185 DR_STE_SET_TAG(eth_l4, tag, ipv6_hop_limit, spec, ttl_hoplimit);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1186
0733535d59e154 Yevgeny Kliteynik 2021-07-04 1187 if (sb->inner)
0733535d59e154 Yevgeny Kliteynik 2021-07-04 1188 DR_STE_SET_TAG(eth_l4, tag, flow_label, misc, inner_ipv6_flow_label);
0733535d59e154 Yevgeny Kliteynik 2021-07-04 1189 else
0733535d59e154 Yevgeny Kliteynik 2021-07-04 1190 DR_STE_SET_TAG(eth_l4, tag, flow_label, misc, outer_ipv6_flow_label);
0733535d59e154 Yevgeny Kliteynik 2021-07-04 1191
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1192 if (spec->tcp_flags) {
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1193 DR_STE_SET_TCP_FLAGS(eth_l4, tag, spec);
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1194 spec->tcp_flags = 0;
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1195 }
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1196
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1197 return 0;
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1198 }
d65e841de80375 Yevgeny Kliteynik 2020-11-19 1199
:::::: The code at line 1170 was first introduced by commit
:::::: d65e841de80375372f9842ed71756d3b90d96dc4 net/mlx5: DR, Move HW STEv0 match logic to a separate file
:::::: TO: Yevgeny Kliteynik <kliteyn@xxxxxxxxxx>
:::::: CC: Saeed Mahameed <saeedm@xxxxxxxxxx>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests