drivers/virt/coco/sev-guest/sev-guest.c:709:17: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Thu Jul 14 2022 - 18:41:57 EST

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Hi Tom,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9bd572ec7a66b56e1aed896217ff311d981cf575
commit: d63670d23e60f00210635ca7c62bce27bec55f1b virt: sevguest: Rename the sevguest dir and files to sev-guest
date: 3 months ago
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220715/202207150617.jqwQ0Rpz-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d63670d23e60f00210635ca7c62bce27bec55f1b
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d63670d23e60f00210635ca7c62bce27bec55f1b
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/virt/coco/sev-guest/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)
>> drivers/virt/coco/sev-guest/sev-guest.c:709:17: 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/sev-guest/sev-guest.c:709:17: sparse: expected void volatile [noderef] __iomem *addr
drivers/virt/coco/sev-guest/sev-guest.c:709:17: sparse: got struct snp_secrets_page_layout *[assigned] layout

vim +709 drivers/virt/coco/sev-guest/sev-guest.c

fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 627
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 628 static int __init sev_guest_probe(struct platform_device *pdev)
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 629 {
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 630 struct snp_secrets_page_layout *layout;
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 631 struct sev_guest_platform_data *data;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 632 struct device *dev = &pdev->dev;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 633 struct snp_guest_dev *snp_dev;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 634 struct miscdevice *misc;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 635 int ret;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 636
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 637 if (!dev->platform_data)
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 638 return -ENODEV;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 639
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 640 data = (struct sev_guest_platform_data *)dev->platform_data;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 641 layout = (__force void *)ioremap_encrypted(data->secrets_gpa, PAGE_SIZE);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 642 if (!layout)
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 643 return -ENODEV;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 644
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 645 ret = -ENOMEM;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 646 snp_dev = devm_kzalloc(&pdev->dev, sizeof(struct snp_guest_dev), GFP_KERNEL);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 647 if (!snp_dev)
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 648 goto e_unmap;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 649
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 650 ret = -EINVAL;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 651 snp_dev->vmpck = get_vmpck(vmpck_id, layout, &snp_dev->os_area_msg_seqno);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 652 if (!snp_dev->vmpck) {
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 653 dev_err(dev, "invalid vmpck id %d\n", vmpck_id);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 654 goto e_unmap;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 655 }
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 656
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 657 /* Verify that VMPCK is not zero. */
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 658 if (is_vmpck_empty(snp_dev)) {
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 659 dev_err(dev, "vmpck id %d is null\n", vmpck_id);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 660 goto e_unmap;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 661 }
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 662
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 663 platform_set_drvdata(pdev, snp_dev);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 664 snp_dev->dev = dev;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 665 snp_dev->layout = layout;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 666
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 667 /* Allocate the shared page used for the request and response message. */
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 668 snp_dev->request = alloc_shared_pages(dev, sizeof(struct snp_guest_msg));
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 669 if (!snp_dev->request)
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 670 goto e_unmap;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 671
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 672 snp_dev->response = alloc_shared_pages(dev, sizeof(struct snp_guest_msg));
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 673 if (!snp_dev->response)
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 674 goto e_free_request;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 675
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 676 snp_dev->certs_data = alloc_shared_pages(dev, SEV_FW_BLOB_MAX_SIZE);
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 677 if (!snp_dev->certs_data)
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 678 goto e_free_response;
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 679
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 680 ret = -EIO;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 681 snp_dev->crypto = init_crypto(snp_dev, snp_dev->vmpck, VMPCK_KEY_LEN);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 682 if (!snp_dev->crypto)
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 683 goto e_free_cert_data;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 684
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 685 misc = &snp_dev->misc;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 686 misc->minor = MISC_DYNAMIC_MINOR;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 687 misc->name = DEVICE_NAME;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 688 misc->fops = &snp_guest_fops;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 689
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 690 /* initial the input address for guest request */
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 691 snp_dev->input.req_gpa = __pa(snp_dev->request);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 692 snp_dev->input.resp_gpa = __pa(snp_dev->response);
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 693 snp_dev->input.data_gpa = __pa(snp_dev->certs_data);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 694
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 695 ret = misc_register(misc);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 696 if (ret)
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 697 goto e_free_cert_data;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 698
2bf93ffbb97e061 drivers/virt/coco/sevguest/sevguest.c Tom Lendacky 2022-04-20 699 dev_info(dev, "Initialized SEV guest driver (using vmpck_id %d)\n", vmpck_id);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 700 return 0;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 701
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 702 e_free_cert_data:
d80b494f7123174 drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 703 free_shared_pages(snp_dev->certs_data, SEV_FW_BLOB_MAX_SIZE);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 704 e_free_response:
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 705 free_shared_pages(snp_dev->response, sizeof(struct snp_guest_msg));
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 706 e_free_request:
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 707 free_shared_pages(snp_dev->request, sizeof(struct snp_guest_msg));
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 708 e_unmap:
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 @709 iounmap(layout);
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 710 return ret;
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 711 }
fce96cf0443083e drivers/virt/coco/sevguest/sevguest.c Brijesh Singh 2022-03-07 712

:::::: The code at line 709 was first introduced by commit
:::::: fce96cf0443083e37455eff8f78fd240c621dae3 virt: Add SEV-SNP guest driver

:::::: TO: Brijesh Singh <brijesh.singh@xxxxxxx>
:::::: CC: Borislav Petkov <bp@xxxxxxx>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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