netdev - [net-next:master 183/184] drivers/net/ethernet/ibm/ibmvnic.c:855:2: warning: enumeration value 'VNIC

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Date:   Fri, 11 Jun 2021 11:31:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     Cristobal Forno <cforno12@...ux.ibm.com>
Cc:     kbuild-all@...ts.01.org, netdev@...r.kernel.org,
        Thomas Falcon <tlfalcon@...ux.ibm.com>,
        Dany Madden <drt@...ux.ibm.com>
Subject: [net-next:master 183/184] drivers/net/ethernet/ibm/ibmvnic.c:855:2:
 warning: enumeration value 'VNIC_DOWN' not handled in switch

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head:   76cf404c40ae8efcf8c6405535a3f6f69e6ba2a5
commit: 53f8b1b25419a14b784feb6706bfe5bac03c5a75 [183/184] ibmvnic: Allow device probe if the device is not ready at boot
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
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/davem/net-next.git/commit/?id=53f8b1b25419a14b784feb6706bfe5bac03c5a75
        git remote add net-next https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git
        git fetch --no-tags net-next master
        git checkout 53f8b1b25419a14b784feb6706bfe5bac03c5a75
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc 

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

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/ibm/ibmvnic.c: In function 'adapter_state_to_string':
>> drivers/net/ethernet/ibm/ibmvnic.c:855:2: warning: enumeration value 'VNIC_DOWN' not handled in switch [-Wswitch]
     855 |  switch (state) {
         |  ^~~~~~
   drivers/net/ethernet/ibm/ibmvnic.c: In function 'reset_reason_to_string':
>> drivers/net/ethernet/ibm/ibmvnic.c:1958:2: warning: enumeration value 'VNIC_RESET_PASSIVE_INIT' not handled in switch [-Wswitch]
    1958 |  switch (reason) {
         |  ^~~~~~
   In file included from include/linux/string.h:269,
                    from arch/powerpc/include/asm/paca.h:15,
                    from arch/powerpc/include/asm/current.h:13,
                    from include/linux/thread_info.h:22,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/powerpc/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/spinlock.h:51,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:6,
                    from include/linux/umh.h:4,
                    from include/linux/kmod.h:9,
                    from include/linux/module.h:16,
                    from drivers/net/ethernet/ibm/ibmvnic.c:35:
   In function 'strncpy',
       inlined from 'handle_vpd_rsp' at drivers/net/ethernet/ibm/ibmvnic.c:4388:3:
   include/linux/fortify-string.h:27:30: warning: '__builtin_strncpy' output truncated before terminating nul copying 3 bytes from a string of the same length [-Wstringop-truncation]
      27 | #define __underlying_strncpy __builtin_strncpy
         |                              ^
   include/linux/fortify-string.h:38:9: note: in expansion of macro '__underlying_strncpy'
      38 |  return __underlying_strncpy(p, q, size);
         |         ^~~~~~~~~~~~~~~~~~~~


vim +/VNIC_DOWN +855 drivers/net/ethernet/ibm/ibmvnic.c

86f669b2b7491b Nathan Fontenot 2018-02-19  852  
0666ef7f61ca76 Lijun Pan       2021-04-12  853  static const char *adapter_state_to_string(enum vnic_state state)
0666ef7f61ca76 Lijun Pan       2021-04-12  854  {
0666ef7f61ca76 Lijun Pan       2021-04-12 @855  	switch (state) {
0666ef7f61ca76 Lijun Pan       2021-04-12  856  	case VNIC_PROBING:
0666ef7f61ca76 Lijun Pan       2021-04-12  857  		return "PROBING";
0666ef7f61ca76 Lijun Pan       2021-04-12  858  	case VNIC_PROBED:
0666ef7f61ca76 Lijun Pan       2021-04-12  859  		return "PROBED";
0666ef7f61ca76 Lijun Pan       2021-04-12  860  	case VNIC_OPENING:
0666ef7f61ca76 Lijun Pan       2021-04-12  861  		return "OPENING";
0666ef7f61ca76 Lijun Pan       2021-04-12  862  	case VNIC_OPEN:
0666ef7f61ca76 Lijun Pan       2021-04-12  863  		return "OPEN";
0666ef7f61ca76 Lijun Pan       2021-04-12  864  	case VNIC_CLOSING:
0666ef7f61ca76 Lijun Pan       2021-04-12  865  		return "CLOSING";
0666ef7f61ca76 Lijun Pan       2021-04-12  866  	case VNIC_CLOSED:
0666ef7f61ca76 Lijun Pan       2021-04-12  867  		return "CLOSED";
0666ef7f61ca76 Lijun Pan       2021-04-12  868  	case VNIC_REMOVING:
0666ef7f61ca76 Lijun Pan       2021-04-12  869  		return "REMOVING";
0666ef7f61ca76 Lijun Pan       2021-04-12  870  	case VNIC_REMOVED:
0666ef7f61ca76 Lijun Pan       2021-04-12  871  		return "REMOVED";
0666ef7f61ca76 Lijun Pan       2021-04-12  872  	}
07b5dc1d515a9a Michal Suchanek 2021-05-20  873  	return "UNKNOWN";
0666ef7f61ca76 Lijun Pan       2021-04-12  874  }
0666ef7f61ca76 Lijun Pan       2021-04-12  875  

:::::: The code at line 855 was first introduced by commit
:::::: 0666ef7f61ca763897fdcd385d65555dd4764514 ibmvnic: print adapter state as a string

:::::: TO: Lijun Pan <lijunp213@...il.com>
:::::: CC: David S. Miller <davem@...emloft.net>

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

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