Hi Selvin, kernel test robot noticed the following build warnings: [auto build test WARNING on rdma/for-next] [also build test WARNING on linus/master v6.7-rc5 next-20231213] [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/Selvin-Xavier/RDMA-bnxt_re-Add-UAPI-to-share-a-page-with-user-space/20231213-115222 base: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next patch link: https://lore.kernel.org/r/1702438411-23530-2-git-send-email-selvin.xavier%40broadcom.com patch subject: [PATCH for-next 1/2] RDMA/bnxt_re: Add UAPI to share a page with user space config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20231213/202312132318.8DO4UiPT-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231213/202312132318.8DO4UiPT-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/202312132318.8DO4UiPT-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/infiniband/hw/bnxt_re/ib_verbs.c:4442:30: warning: variable 'cctx' set but not used [-Wunused-but-set-variable] struct bnxt_qplib_chip_ctx *cctx; ^ drivers/infiniband/hw/bnxt_re/ib_verbs.c:4472:42: warning: variable 'addr' is uninitialized when used here [-Wuninitialized] entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mem_offset); ^~~~ drivers/infiniband/hw/bnxt_re/ib_verbs.c:4448:10: note: initialize the variable 'addr' to silence this warning u64 addr; ^ = 0 drivers/infiniband/hw/bnxt_re/ib_verbs.c:4472:48: warning: variable 'mmap_flag' is uninitialized when used here [-Wuninitialized] entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mem_offset); ^~~~~~~~~ drivers/infiniband/hw/bnxt_re/ib_verbs.c:4441:2: note: variable 'mmap_flag' is declared here enum bnxt_re_mmap_flag mmap_flag; ^ 3 warnings generated. vim +/cctx +4442 drivers/infiniband/hw/bnxt_re/ib_verbs.c 4431 4432 DECLARE_UVERBS_GLOBAL_METHODS(BNXT_RE_OBJECT_NOTIFY_DRV, 4433 &UVERBS_METHOD(BNXT_RE_METHOD_NOTIFY_DRV)); 4434 4435 /* Toggle MEM */ 4436 static int UVERBS_HANDLER(BNXT_RE_METHOD_GET_TOGGLE_MEM)(struct uverbs_attr_bundle *attrs) 4437 { 4438 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs, BNXT_RE_TOGGLE_MEM_HANDLE); 4439 enum bnxt_re_get_toggle_mem_type res_type; 4440 struct bnxt_re_user_mmap_entry *entry; 4441 enum bnxt_re_mmap_flag mmap_flag; > 4442 struct bnxt_qplib_chip_ctx *cctx; 4443 struct bnxt_re_ucontext *uctx; 4444 struct bnxt_re_dev *rdev; 4445 u64 mem_offset; 4446 u32 length; 4447 u32 offset; 4448 u64 addr; 4449 int err; 4450 4451 uctx = container_of(ib_uverbs_get_ucontext(attrs), struct bnxt_re_ucontext, ib_uctx); 4452 if (IS_ERR(uctx)) 4453 return PTR_ERR(uctx); 4454 4455 err = uverbs_get_const(&res_type, attrs, BNXT_RE_TOGGLE_MEM_TYPE); 4456 if (err) 4457 return err; 4458 4459 rdev = uctx->rdev; 4460 cctx = rdev->chip_ctx; 4461 4462 switch (res_type) { 4463 case BNXT_RE_CQ_TOGGLE_MEM: 4464 break; 4465 case BNXT_RE_SRQ_TOGGLE_MEM: 4466 break; 4467 4468 default: 4469 return -EOPNOTSUPP; 4470 } 4471 4472 entry = bnxt_re_mmap_entry_insert(uctx, addr, mmap_flag, &mem_offset); 4473 if (!entry) 4474 return -ENOMEM; 4475 4476 uobj->object = entry; 4477 uverbs_finalize_uobj_create(attrs, BNXT_RE_TOGGLE_MEM_HANDLE); 4478 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_PAGE, 4479 &mem_offset, sizeof(mem_offset)); 4480 if (err) 4481 return err; 4482 4483 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_LENGTH, 4484 &length, sizeof(length)); 4485 if (err) 4486 return err; 4487 4488 err = uverbs_copy_to(attrs, BNXT_RE_TOGGLE_MEM_MMAP_OFFSET, 4489 &offset, sizeof(length)); 4490 if (err) 4491 return err; 4492 4493 return 0; 4494 } 4495 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
