Re: [PATCH] swiotlb: avoid double copy with swiotlb on tx socket

[kernel test robot <lkp@intel.com>]

Hi Luigi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v7.1 next-20260615]
[cannot apply to driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Luigi-Rizzo/swiotlb-avoid-double-copy-with-swiotlb-on-tx-socket/20260616-074655
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20260615234220.3946885-1-lrizzo%40google.com
patch subject: [PATCH] swiotlb: avoid double copy with swiotlb on tx socket
config: powerpc-pmac32_defconfig (https://download.01.org/0day-ci/archive/20260616/202606161322.zGyw68Qa-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project e19d1f51a2c80b63cd8ca95bcc757b7077112808)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260616/202606161322.zGyw68Qa-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606161322.zGyw68Qa-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: net/core/sock.c:3215 function parameter 'sk' not described in '__skb_page_frag_refill'
>> Warning: net/core/sock.c:3215 expecting prototype for skb_page_frag_refill(). Prototype was for __skb_page_frag_refill() instead

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