[chrome-os:chromeos-4.19 1/14] drivers/net/wireless/iwl7000/mac80211/rx.c:254:2: warning: alignment 1 of 'struct <anonymous>' is less than 2

[chrome-os:chromeos-4.19 1/14] drivers/net/wireless/iwl7000/mac80211/rx.c:254:2: warning: alignment 1 of 'struct <anonymous>' is less than 2

[kbuild test robot]

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tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.19
head:   5599f416ce66f49db8215fac09f38573f43697f4
commit: 596740398c2376f7aa1c18ebc969ba2e06307200 [1/14] Revert "CHROMIUM: iwl7000: Merge core50-70 driver updates"
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-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
        git checkout 596740398c2376f7aa1c18ebc969ba2e06307200
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

drivers/net/wireless/iwl7000/mac80211/rx.c: In function 'ieee80211_handle_mu_mimo_mon':
>> drivers/net/wireless/iwl7000/mac80211/rx.c:254:2: warning: alignment 1 of 'struct <anonymous>' is less than 2 [-Wpacked-not-aligned]
254 |  } __packed action;
|  ^
drivers/net/wireless/iwl7000/mac80211/rx.c: At top level:
cc1: warning: unrecognized command line option '-Wno-enum-conversion'

vim +254 drivers/net/wireless/iwl7000/mac80211/rx.c

   245	
   246	static void ieee80211_handle_mu_mimo_mon(struct ieee80211_sub_if_data *sdata,
   247						 struct sk_buff *skb,
   248						 int rtap_space)
   249	{
   250		struct {
   251			struct ieee80211_hdr_3addr hdr;
   252			u8 category;
   253			u8 action_code;
 > 254		} __packed action;
   255	
   256		if (!sdata)
   257			return;
   258	
   259		BUILD_BUG_ON(sizeof(action) != IEEE80211_MIN_ACTION_SIZE + 1);
   260	
   261		if (skb->len < rtap_space + sizeof(action) +
   262			       VHT_MUMIMO_GROUPS_DATA_LEN)
   263			return;
   264	
   265		if (!is_valid_ether_addr(sdata->u.mntr.mu_follow_addr))
   266			return;
   267	
   268		skb_copy_bits(skb, rtap_space, &action, sizeof(action));
   269	
   270		if (!ieee80211_is_action(action.hdr.frame_control))
   271			return;
   272	
   273		if (action.category != WLAN_CATEGORY_VHT)
   274			return;
   275	
   276		if (action.action_code != WLAN_VHT_ACTION_GROUPID_MGMT)
   277			return;
   278	
   279		if (!ether_addr_equal(action.hdr.addr1, sdata->u.mntr.mu_follow_addr))
   280			return;
   281	
   282		skb = skb_copy(skb, GFP_ATOMIC);
   283		if (!skb)
   284			return;
   285	
   286		skb_queue_tail(&sdata->skb_queue, skb);
   287		ieee80211_queue_work(&sdata->local->hw, &sdata->work);
   288	}
   289	

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

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