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Fri, 15 Apr 2022 12:29:21 +0000 Date: Fri, 15 Apr 2022 20:29:16 +0800 From: kernel test robot To: Brijesh Singh Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, x86@kernel.org, Borislav Petkov Subject: [tip:x86/sev 43/49] drivers/virt/coco/sevguest/sevguest.c:579:17: sparse: sparse: incorrect type in argument 1 (different address spaces) Message-ID: <202204152027.aJdnJRgJ-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/sev head: 101826e02ac6c829bf4e768295e79ae9c37b4b2a commit: fce96cf0443083e37455eff8f78fd240c621dae3 [43/49] virt: Add SEV-SNP guest driver config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220415/202204152027.aJdnJRgJ-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-19) 11.2.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=fce96cf0443083e37455eff8f78fd240c621dae3 git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git git fetch --no-tags tip x86/sev git checkout fce96cf0443083e37455eff8f78fd240c621dae3 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/virt/coco/sevguest/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> drivers/virt/coco/sevguest/sevguest.c:579:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got struct snp_secrets_page_layout *[assigned] layout @@ drivers/virt/coco/sevguest/sevguest.c:579:17: sparse: expected void volatile [noderef] __iomem *addr drivers/virt/coco/sevguest/sevguest.c:579:17: sparse: got struct snp_secrets_page_layout *[assigned] layout vim +579 drivers/virt/coco/sevguest/sevguest.c 504 505 static int __init snp_guest_probe(struct platform_device *pdev) 506 { 507 struct snp_secrets_page_layout *layout; 508 struct snp_guest_platform_data *data; 509 struct device *dev = &pdev->dev; 510 struct snp_guest_dev *snp_dev; 511 struct miscdevice *misc; 512 int ret; 513 514 if (!dev->platform_data) 515 return -ENODEV; 516 517 data = (struct snp_guest_platform_data *)dev->platform_data; 518 layout = (__force void *)ioremap_encrypted(data->secrets_gpa, PAGE_SIZE); 519 if (!layout) 520 return -ENODEV; 521 522 ret = -ENOMEM; 523 snp_dev = devm_kzalloc(&pdev->dev, sizeof(struct snp_guest_dev), GFP_KERNEL); 524 if (!snp_dev) 525 goto e_unmap; 526 527 ret = -EINVAL; 528 snp_dev->vmpck = get_vmpck(vmpck_id, layout, &snp_dev->os_area_msg_seqno); 529 if (!snp_dev->vmpck) { 530 dev_err(dev, "invalid vmpck id %d\n", vmpck_id); 531 goto e_unmap; 532 } 533 534 /* Verify that VMPCK is not zero. */ 535 if (is_vmpck_empty(snp_dev)) { 536 dev_err(dev, "vmpck id %d is null\n", vmpck_id); 537 goto e_unmap; 538 } 539 540 platform_set_drvdata(pdev, snp_dev); 541 snp_dev->dev = dev; 542 snp_dev->layout = layout; 543 544 /* Allocate the shared page used for the request and response message. */ 545 snp_dev->request = alloc_shared_pages(sizeof(struct snp_guest_msg)); 546 if (!snp_dev->request) 547 goto e_unmap; 548 549 snp_dev->response = alloc_shared_pages(sizeof(struct snp_guest_msg)); 550 if (!snp_dev->response) 551 goto e_free_request; 552 553 ret = -EIO; 554 snp_dev->crypto = init_crypto(snp_dev, snp_dev->vmpck, VMPCK_KEY_LEN); 555 if (!snp_dev->crypto) 556 goto e_free_response; 557 558 misc = &snp_dev->misc; 559 misc->minor = MISC_DYNAMIC_MINOR; 560 misc->name = DEVICE_NAME; 561 misc->fops = &snp_guest_fops; 562 563 /* initial the input address for guest request */ 564 snp_dev->input.req_gpa = __pa(snp_dev->request); 565 snp_dev->input.resp_gpa = __pa(snp_dev->response); 566 567 ret = misc_register(misc); 568 if (ret) 569 goto e_free_response; 570 571 dev_info(dev, "Initialized SNP guest driver (using vmpck_id %d)\n", vmpck_id); 572 return 0; 573 574 e_free_response: 575 free_shared_pages(snp_dev->response, sizeof(struct snp_guest_msg)); 576 e_free_request: 577 free_shared_pages(snp_dev->request, sizeof(struct snp_guest_msg)); 578 e_unmap: > 579 iounmap(layout); 580 return ret; 581 } 582 -- 0-DAY CI Kernel Test Service https://01.org/lkp