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Date:   Tue, 27 Oct 2020 02:55:21 +0800
From:   kernel test robot <lkp@...el.com>
To:     Aleksandr Nogikh <aleksandrnogikh@...il.com>, davem@...emloft.net,
        kuba@...nel.org, johannes@...solutions.net
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        edumazet@...gle.com, andreyknvl@...gle.com, dvyukov@...gle.com,
        elver@...gle.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org
Subject: Re: [PATCH v3 2/3] net: add kcov handle to skb extensions

Hi Aleksandr,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 2ef991b5fdbe828dc8fb8af473dab160729570ed]

url:    https://github.com/0day-ci/linux/commits/Aleksandr-Nogikh/net-mac80211-kernel-enable-KCOV-remote-coverage-collection-for-802-11-frame-handling/20201026-231134
base:    2ef991b5fdbe828dc8fb8af473dab160729570ed
config: x86_64-randconfig-a004-20201026 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project f2c25c70791de95d2466e09b5b58fc37f6ccd7a4)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/46d348800b64931071128ba47a5f17641d288a2f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Aleksandr-Nogikh/net-mac80211-kernel-enable-KCOV-remote-coverage-collection-for-802-11-frame-handling/20201026-231134
        git checkout 46d348800b64931071128ba47a5f17641d288a2f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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 >>):

   In file included from drivers/net/ethernet/jme.c:17:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/jme.c:2863:30: warning: shift count >= width of type [-Wshift-count-overflow]
               !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
                                       ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/net/ethernet/jme.c:2864:42: warning: shift count >= width of type [-Wshift-count-overflow]
                   if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
                                                          ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 4 errors generated.
--
   In file included from drivers/media/pci/ddbridge/ddbridge-main.c:35:
   In file included from drivers/media/pci/ddbridge/ddbridge.h:56:
   In file included from include/media/dvb_net.h:22:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/media/pci/ddbridge/ddbridge-main.c:183:29: warning: shift count >= width of type [-Wshift-count-overflow]
           if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
                                      ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 4 errors generated.
--
   In file included from drivers/net/ethernet/broadcom/tg3.c:38:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/broadcom/tg3.c:17768:33: warning: shift count >= width of type [-Wshift-count-overflow]
                   persist_dma_mask = dma_mask = DMA_BIT_MASK(64);
                                                 ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 4 errors generated.
--
   In file included from drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c:13:
   In file included from drivers/net/ethernet/aquantia/atlantic/aq_main.h:12:
   In file included from drivers/net/ethernet/aquantia/atlantic/aq_common.h:13:
   In file included from include/linux/etherdevice.h:20:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c:122:31: warning: shift count >= width of type [-Wshift-count-overflow]
           err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
                                        ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c:124:43: warning: shift count >= width of type [-Wshift-count-overflow]
                   err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
                                                           ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 4 errors generated.
--
   In file included from drivers/net/ethernet/brocade/bna/bnad.c:12:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/brocade/bna/bnad.c:3559:45: warning: shift count >= width of type [-Wshift-count-overflow]
           if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
                                                      ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 4 errors generated.
--
   In file included from drivers/net/ethernet/atheros/alx/main.c:38:
   In file included from include/linux/ip.h:16:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/atheros/alx/main.c:1707:45: warning: shift count >= width of type [-Wshift-count-overflow]
           if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
                                                      ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 4 errors generated.
--
   In file included from drivers/net/ethernet/marvell/skge.c:20:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/marvell/skge.c:3894:51: warning: shift count >= width of type [-Wshift-count-overflow]
           if (!only_32bit_dma && !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
                                                            ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/net/ethernet/marvell/skge.c:3896:43: warning: shift count >= width of type [-Wshift-count-overflow]
                   err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
                                                           ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 4 errors generated.
--
   In file included from drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c:42:
   In file included from include/linux/etherdevice.h:20:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c:6692:30: warning: shift count >= width of type [-Wshift-count-overflow]
           if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
                                       ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c:6694:43: warning: shift count >= width of type [-Wshift-count-overflow]
                   err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
                                                           ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 4 errors generated.
--
   In file included from drivers/net/ethernet/cavium/liquidio/lio_main.c:22:
   In file included from include/net/vxlan.h:5:
   In file included from include/linux/if_vlan.h:10:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/cavium/liquidio/lio_main.c:1401:52: warning: shift count >= width of type [-Wshift-count-overflow]
           if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) {
                                                             ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 4 errors generated.
--
   In file included from drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c:43:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c:2920:31: warning: shift count >= width of type [-Wshift-count-overflow]
           err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
                                        ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/net/ethernet/chelsio/cxgb4vf/cxgb4vf_main.c:2922:43: warning: shift count >= width of type [-Wshift-count-overflow]
                   err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
                                                           ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 4 errors generated.
--
   In file included from drivers/net/ethernet/neterion/s2io.c:62:
   In file included from include/linux/netdevice.h:37:
   In file included from include/linux/ethtool.h:18:
   In file included from include/uapi/linux/ethtool.h:19:
   In file included from include/linux/if_ether.h:19:
   include/linux/skbuff.h:4617:26: error: implicit declaration of function 'skb_ext_add' [-Werror,-Wimplicit-function-declaration]
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                          ^
   include/linux/skbuff.h:4617:43: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
                   u64 *kcov_handle_ptr = skb_ext_add(skb, SKB_EXT_KCOV_HANDLE);
                                                           ^
   include/linux/skbuff.h:4626:21: error: implicit declaration of function 'skb_ext_find' [-Werror,-Wimplicit-function-declaration]
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                              ^
   include/linux/skbuff.h:4626:39: error: use of undeclared identifier 'SKB_EXT_KCOV_HANDLE'
           u64 *kcov_handle = skb_ext_find(skb, SKB_EXT_KCOV_HANDLE);
                                                ^
>> drivers/net/ethernet/neterion/s2io.c:7669:32: warning: shift count >= width of type [-Wshift-count-overflow]
           if (!dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) {
                                         ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   drivers/net/ethernet/neterion/s2io.c:7672:41: warning: shift count >= width of type [-Wshift-count-overflow]
                   if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64))) {
                                                         ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   2 warnings and 4 errors generated.
..

vim +2863 drivers/net/ethernet/jme.c

95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2858  
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2859  static int
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2860  jme_pci_dma64(struct pci_dev *pdev)
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2861  {
814c01dc7c53303 drivers/net/jme.c Guo-Fu Tseng  2009-02-27  2862  	if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
e930438c42e744e drivers/net/jme.c Yang Hongyang 2009-04-13 @2863  	    !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
e930438c42e744e drivers/net/jme.c Yang Hongyang 2009-04-13  2864  		if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
814c01dc7c53303 drivers/net/jme.c Guo-Fu Tseng  2009-02-27  2865  			return 1;
814c01dc7c53303 drivers/net/jme.c Guo-Fu Tseng  2009-02-27  2866  
814c01dc7c53303 drivers/net/jme.c Guo-Fu Tseng  2009-02-27  2867  	if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
e930438c42e744e drivers/net/jme.c Yang Hongyang 2009-04-13  2868  	    !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
e930438c42e744e drivers/net/jme.c Yang Hongyang 2009-04-13  2869  		if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
814c01dc7c53303 drivers/net/jme.c Guo-Fu Tseng  2009-02-27  2870  			return 1;
814c01dc7c53303 drivers/net/jme.c Guo-Fu Tseng  2009-02-27  2871  
284901a90a9e0b8 drivers/net/jme.c Yang Hongyang 2009-04-06  2872  	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
284901a90a9e0b8 drivers/net/jme.c Yang Hongyang 2009-04-06  2873  		if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2874  			return 0;
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2875  
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2876  	return -1;
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2877  }
95252236e73e789 drivers/net/jme.c Guo-Fu Tseng  2008-09-16  2878  

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