From: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx> Date: Thu, 4 Sep 2025 11:31:44 +0200 > On Wed, Sep 03, 2025 at 10:29:02AM +0800, kernel test robot wrote: >> Hi Maciej, >> >> kernel test robot noticed the following build warnings: >> >> [auto build test WARNING on bpf/master] >> >> url: https://github.com/intel-lab-lkp/linux/commits/Maciej-Fijalkowski/xsk-fix-immature-cq-descriptor-production/20250903-060850 >> base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master >> patch link: https://lore.kernel.org/r/20250902220613.2331265-1-maciej.fijalkowski%40intel.com >> patch subject: [PATCH v8 bpf] xsk: fix immature cq descriptor production >> config: riscv-randconfig-001-20250903 (https://download.01.org/0day-ci/archive/20250903/202509031029.iL7rCVvQ-lkp@xxxxxxxxx/config) >> compiler: riscv32-linux-gcc (GCC) 8.5.0 >> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250903/202509031029.iL7rCVvQ-lkp@xxxxxxxxx/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@xxxxxxxxx> >> | Closes: https://lore.kernel.org/oe-kbuild-all/202509031029.iL7rCVvQ-lkp@xxxxxxxxx/ >> >> All warnings (new ones prefixed by >>): >> >> net/xdp/xsk.c: In function 'xsk_cq_submit_addr_locked': >>>> net/xdp/xsk.c:572:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] >> xskq_prod_write_addr(pool->cq, idx, (u64)skb_shinfo(skb)->destructor_arg); >> ^ >> net/xdp/xsk.c: In function 'xsk_set_destructor_arg': >>>> net/xdp/xsk.c:625:36: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] >> skb_shinfo(skb)->destructor_arg = (void *)addr; > > Meh, I suppose uintptr_t casting will help here. Correct, you need a double cast to convert u64 <-> void *, see [0]. Maybe we'd want to make those helpers generic in future... > So I'll send v9 in the evening :) [0] https://elixir.bootlin.com/linux/v6.17-rc4/source/include/net/libeth/xdp.h#L475 Thanks, Olek
