1:24 a.m.
CC: linux-kernel(a)vger.kernel.org
TO: Madhuparna Bhowmik <madhuparnabhowmik10(a)gmail.com>
CC: "Paul E. McKenney" <paulmck(a)kernel.org>
CC: Amol Grover <frextrite(a)gmail.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
dev.2020.05.09a
head: f947b264331dde395e790628cf7c41f632cad098
commit: d13fee049fa8e94649aa9914fd1ab5d07da51da4 [57/66] Default enable RCU list lockdep
debugging with PROVE_RCU
config: powerpc-randconfig-r015-20200515 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project
13d44b2a0c7ef404b13b16644765977cd5310fe2)
reproduce:
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
git checkout d13fee049fa8e94649aa9914fd1ab5d07da51da4
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
> net/sched/cls_flower.c:298:12: warning: stack frame size of 1040
bytes in function 'fl_classify' [-Wframe-larger-than=]
static int
fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
^
1 warning generated.
vim +/fl_classify +298 net/sched/cls_flower.c
e0ace68af2acfe Paul Blakey 2019-07-09 297
77b9900ef53ae0 Jiri Pirko 2015-05-12 @298 static int fl_classify(struct sk_buff
*skb, const struct tcf_proto *tp,
77b9900ef53ae0 Jiri Pirko 2015-05-12 299 struct tcf_result *res)
77b9900ef53ae0 Jiri Pirko 2015-05-12 300 {
77b9900ef53ae0 Jiri Pirko 2015-05-12 301 struct cls_fl_head *head =
rcu_dereference_bh(tp->root);
77b9900ef53ae0 Jiri Pirko 2015-05-12 302 struct fl_flow_key skb_mkey;
e0ace68af2acfe Paul Blakey 2019-07-09 303 struct fl_flow_key skb_key;
e0ace68af2acfe Paul Blakey 2019-07-09 304 struct fl_flow_mask *mask;
e0ace68af2acfe Paul Blakey 2019-07-09 305 struct cls_fl_filter *f;
77b9900ef53ae0 Jiri Pirko 2015-05-12 306
05cd271fd61a0b Paul Blakey 2018-04-30 307 list_for_each_entry_rcu(mask,
&head->masks, list) {
8a9093c79863b5 Jason Baron 2020-02-17 308
flow_dissector_init_keys(&skb_key.control, &skb_key.basic);
05cd271fd61a0b Paul Blakey 2018-04-30 309 fl_clear_masked_range(&skb_key,
mask);
bc3103f1ed405d Amir Vadai 2016-09-08 310
8212ed777f40c7 Jiri Pirko 2019-06-19 311 skb_flow_dissect_meta(skb,
&mask->dissector, &skb_key);
05cd271fd61a0b Paul Blakey 2018-04-30 312 /* skb_flow_dissect() does not set
n_proto in case an unknown
05cd271fd61a0b Paul Blakey 2018-04-30 313 * protocol, so do it rather here.
77b9900ef53ae0 Jiri Pirko 2015-05-12 314 */
77b9900ef53ae0 Jiri Pirko 2015-05-12 315 skb_key.basic.n_proto =
skb->protocol;
05cd271fd61a0b Paul Blakey 2018-04-30 316 skb_flow_dissect_tunnel_info(skb,
&mask->dissector, &skb_key);
e0ace68af2acfe Paul Blakey 2019-07-09 317 skb_flow_dissect_ct(skb,
&mask->dissector, &skb_key,
e0ace68af2acfe Paul Blakey 2019-07-09 318 fl_ct_info_to_flower_map,
e0ace68af2acfe Paul Blakey 2019-07-09 319
ARRAY_SIZE(fl_ct_info_to_flower_map));
05cd271fd61a0b Paul Blakey 2018-04-30 320 skb_flow_dissect(skb,
&mask->dissector, &skb_key, 0);
77b9900ef53ae0 Jiri Pirko 2015-05-12 321
05cd271fd61a0b Paul Blakey 2018-04-30 322 fl_set_masked_key(&skb_mkey,
&skb_key, mask);
77b9900ef53ae0 Jiri Pirko 2015-05-12 323
5c72299fba9df4 Amritha Nambiar 2018-11-12 324 f = fl_lookup(mask, &skb_mkey,
&skb_key);
e8eb36cd8ca93f Amir Vadai 2016-06-13 325 if (f &&
!tc_skip_sw(f->flags)) {
77b9900ef53ae0 Jiri Pirko 2015-05-12 326 *res = f->res;
77b9900ef53ae0 Jiri Pirko 2015-05-12 327 return tcf_exts_exec(skb,
&f->exts, res);
77b9900ef53ae0 Jiri Pirko 2015-05-12 328 }
05cd271fd61a0b Paul Blakey 2018-04-30 329 }
77b9900ef53ae0 Jiri Pirko 2015-05-12 330 return -1;
77b9900ef53ae0 Jiri Pirko 2015-05-12 331 }
77b9900ef53ae0 Jiri Pirko 2015-05-12 332
:::::: The code at line 298 was first introduced by commit
:::::: 77b9900ef53ae047e36a37d13a2aa33bb2d60641 tc: introduce Flower classifier
:::::: TO: Jiri Pirko <jiri(a)resnulli.us>
:::::: CC: David S. Miller <davem(a)davemloft.net>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org