[linux-next:master 5608/8423] drivers/cxl/core/bus.c:516:1: warning: stack frame size (1032) exceeds limit (1024) in function 'devm_cxl_add_decoder'

Hi Ben,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b9011c7e671dbbf59bb753283ddfd03f0c9eb865
commit: 5161a55c069f53d88da49274cbef6e3c74eadea9 [5608/8423] cxl: Move cxl_core to new directory
config: mips-randconfig-c004-20210816 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6)
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 mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5161a55c069f53d88da49274cbef6e3c74eadea9
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 5161a55c069f53d88da49274cbef6e3c74eadea9
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

quoted

drivers/cxl/core/bus.c:516:1: warning: stack frame size (1032) exceeds limit (1024) in function 'devm_cxl_add_decoder' [-Wframe-larger-than]

   devm_cxl_add_decoder(struct device *host, struct cxl_port *port, int nr_targets,
   ^
   1 warning generated.


vim +/devm_cxl_add_decoder +516 drivers/cxl/core/bus.c

40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  514  
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  515  struct cxl_decoder *
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09 @516  devm_cxl_add_decoder(struct device *host, struct cxl_port *port, int nr_targets,
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  517  		     resource_size_t base, resource_size_t len,
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  518  		     int interleave_ways, int interleave_granularity,
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  519  		     enum cxl_decoder_type type, unsigned long flags)
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  520  {
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  521  	struct cxl_decoder *cxld;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  522  	struct device *dev;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  523  	int rc;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  524  
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  525  	cxld = cxl_decoder_alloc(port, nr_targets, base, len, interleave_ways,
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  526  				 interleave_granularity, type, flags);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  527  	if (IS_ERR(cxld))
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  528  		return cxld;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  529  
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  530  	dev = &cxld->dev;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  531  	rc = dev_set_name(dev, "decoder%d.%d", port->id, cxld->id);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  532  	if (rc)
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  533  		goto err;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  534  
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  535  	rc = device_add(dev);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  536  	if (rc)
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  537  		goto err;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  538  
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  539  	rc = devm_add_action_or_reset(host, unregister_dev, dev);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  540  	if (rc)
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  541  		return ERR_PTR(rc);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  542  	return cxld;
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  543  
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  544  err:
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  545  	put_device(dev);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  546  	return ERR_PTR(rc);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  547  }
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  548  EXPORT_SYMBOL_GPL(devm_cxl_add_decoder);
40ba17afdfabb0 drivers/cxl/core.c Dan Williams 2021-06-09  549  

:::::: The code at line 516 was first introduced by commit
:::::: 40ba17afdfabb01688c61565dbe02a916241bc05 cxl/acpi: Introduce cxl_decoder objects

:::::: TO: Dan Williams [off-list ref]
:::::: CC: Dan Williams [off-list ref]

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