linux-kernel - block/bfq-iosched.c:6171:13: warning: stack frame size (1104) exceeds limit (1024) in 'bfq_insert

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Message-ID: <202307140331.d3lMVJiF-lkp@intel.com>
Date:   Fri, 14 Jul 2023 03:24:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     Paolo Valente <paolo.valente@...aro.org>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Gabriele Felici <felicigb@...il.com>,
        Carmine Zaccagnino <carmine@...minezacc.com>
Subject: block/bfq-iosched.c:6171:13: warning: stack frame size (1104)
 exceeds limit (1024) in 'bfq_insert_requests'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   eb26cbb1a754ccde5d4d74527dad5ba051808fad
commit: 9778369a2d6c5ed2b81a04164c4aa9da1bdb193d block, bfq: split sync bfq_queues on a per-actuator basis
date:   6 months ago
config: riscv-randconfig-r003-20230713 (https://download.01.org/0day-ci/archive/20230714/202307140331.d3lMVJiF-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce: (https://download.01.org/0day-ci/archive/20230714/202307140331.d3lMVJiF-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307140331.d3lMVJiF-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> block/bfq-iosched.c:6171:13: warning: stack frame size (1104) exceeds limit (1024) in 'bfq_insert_requests' [-Wframe-larger-than]
   static void bfq_insert_requests(struct blk_mq_hw_ctx *hctx,
               ^
   1 warning generated.


vim +/bfq_insert_requests +6171 block/bfq-iosched.c

aee69d78dec0ff Paolo Valente 2017-04-19  6170  
aee69d78dec0ff Paolo Valente 2017-04-19 @6171  static void bfq_insert_requests(struct blk_mq_hw_ctx *hctx,
aee69d78dec0ff Paolo Valente 2017-04-19  6172  				struct list_head *list, bool at_head)
aee69d78dec0ff Paolo Valente 2017-04-19  6173  {
aee69d78dec0ff Paolo Valente 2017-04-19  6174  	while (!list_empty(list)) {
aee69d78dec0ff Paolo Valente 2017-04-19  6175  		struct request *rq;
aee69d78dec0ff Paolo Valente 2017-04-19  6176  
aee69d78dec0ff Paolo Valente 2017-04-19  6177  		rq = list_first_entry(list, struct request, queuelist);
aee69d78dec0ff Paolo Valente 2017-04-19  6178  		list_del_init(&rq->queuelist);
aee69d78dec0ff Paolo Valente 2017-04-19  6179  		bfq_insert_request(hctx, rq, at_head);
aee69d78dec0ff Paolo Valente 2017-04-19  6180  	}
aee69d78dec0ff Paolo Valente 2017-04-19  6181  }
aee69d78dec0ff Paolo Valente 2017-04-19  6182  

:::::: The code at line 6171 was first introduced by commit
:::::: aee69d78dec0ffdf82e35d57c626e80dddc314d5 block, bfq: introduce the BFQ-v0 I/O scheduler as an extra scheduler

:::::: TO: Paolo Valente <paolo.valente@...aro.org>
:::::: CC: Jens Axboe <axboe@...com>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki