linux-kernel - [rt-devel:linux-5.15.y-rt-rebase 45/158] net/sched/sch_gred.c:902:13: error: stack frame size (1184) exceeds limit (1024) in 'gred

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Date:   Wed, 3 Nov 2021 03:47:40 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Ahmed S. Darwish" <a.darwish@...utronix.de>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [rt-devel:linux-5.15.y-rt-rebase 45/158]
 net/sched/sch_gred.c:902:13: error: stack frame size (1184) exceeds limit
 (1024) in 'gred_destroy'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.15.y-rt-rebase
head:   f44dccacf55b7d1e3a6541b19ab39a9c425b41c8
commit: 4502dc5ee9ba8aaf3ef291e8995443fdb70e8345 [45/158] net: sched: Protect Qdisc::bstats with u64_stats
config: hexagon-buildonly-randconfig-r005-20211101 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 264d3b6d4e08401c5b50a85bd76e80b3461d77e6)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/commit/?id=4502dc5ee9ba8aaf3ef291e8995443fdb70e8345
        git remote add rt-devel https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
        git fetch --no-tags rt-devel linux-5.15.y-rt-rebase
        git checkout 4502dc5ee9ba8aaf3ef291e8995443fdb70e8345
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> net/sched/sch_gred.c:902:13: error: stack frame size (1184) exceeds limit (1024) in 'gred_destroy' [-Werror,-Wframe-larger-than]
   static void gred_destroy(struct Qdisc *sch)
               ^
>> net/sched/sch_gred.c:310:13: error: stack frame size (1184) exceeds limit (1024) in 'gred_offload' [-Werror,-Wframe-larger-than]
   static void gred_offload(struct Qdisc *sch, enum tc_gred_command command)
               ^
   2 errors generated.


vim +/gred_destroy +902 net/sched/sch_gred.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  901  
^1da177e4c3f41 Linus Torvalds 2005-04-16 @902  static void gred_destroy(struct Qdisc *sch)
^1da177e4c3f41 Linus Torvalds 2005-04-16  903  {
^1da177e4c3f41 Linus Torvalds 2005-04-16  904  	struct gred_sched *table = qdisc_priv(sch);
^1da177e4c3f41 Linus Torvalds 2005-04-16  905  	int i;
^1da177e4c3f41 Linus Torvalds 2005-04-16  906  
^1da177e4c3f41 Linus Torvalds 2005-04-16  907  	for (i = 0; i < table->DPs; i++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16  908  		if (table->tab[i])
6639607ed9deae Thomas Graf    2005-11-05  909  			gred_destroy_vq(table->tab[i]);
^1da177e4c3f41 Linus Torvalds 2005-04-16  910  	}
890d8d23ec3c9e Jakub Kicinski 2018-11-19  911  	gred_offload(sch, TC_GRED_DESTROY);
^1da177e4c3f41 Linus Torvalds 2005-04-16  912  }
^1da177e4c3f41 Linus Torvalds 2005-04-16  913  

:::::: The code at line 902 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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