Re: [PATCH v10 20/20] x86/efi: EFI stub DRTM launch support for Secure Launch

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On 8/28/24 10:14 AM, Ard Biesheuvel wrote:
On Wed, 28 Aug 2024 at 19:09, kernel test robot <lkp@xxxxxxxxx> wrote:

Hi Ross,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/x86/core]
[also build test WARNING on char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus herbert-cryptodev-2.6/master efi/next linus/master v6.11-rc5]
[cannot apply to herbert-crypto-2.6/master next-20240828]
[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://urldefense.com/v3/__https://git-scm.com/docs/git-format-patch*_base_tree_information__;Iw!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmIxuz-LAC$ ]

url:    https://urldefense.com/v3/__https://github.com/intel-lab-lkp/linux/commits/Ross-Philipson/Documentation-x86-Secure-Launch-kernel-documentation/20240827-065225__;!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmI7Z6SQKy$
base:   tip/x86/core
patch link:    https://urldefense.com/v3/__https://lore.kernel.org/r/20240826223835.3928819-21-ross.philipson*40oracle.com__;JQ!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmIzWfs1XZ$
patch subject: [PATCH v10 20/20] x86/efi: EFI stub DRTM launch support for Secure Launch
config: i386-randconfig-062-20240828 (https://urldefense.com/v3/__https://download.01.org/0day-ci/archive/20240829/202408290030.FEbUhHbr-lkp@xxxxxxxxx/config__;!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmIwkYG0TY$ )


This is a i386 32-bit build, which makes no sense: this stuff should
just declare 'depends on 64BIT'

Our config entry already has 'depends on X86_64' which in turn depends on 64BIT. I would think that would be enough. Do you think it needs an explicit 'depends on 64BIT' in our entry as well?

Thanks
Ross



compiler: clang version 18.1.5 (https://urldefense.com/v3/__https://github.com/llvm/llvm-project__;!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmI2SDLdTN$  617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://urldefense.com/v3/__https://download.01.org/0day-ci/archive/20240829/202408290030.FEbUhHbr-lkp@xxxxxxxxx/reproduce__;!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmI5MJDdIG$ )

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://urldefense.com/v3/__https://lore.kernel.org/oe-kbuild-all/202408290030.FEbUhHbr-lkp@xxxxxxxxx/__;!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmI-MitiqR$

sparse warnings: (new ones prefixed by >>)
drivers/firmware/efi/libstub/x86-stub.c:945:41: sparse: sparse: non size-preserving pointer to integer cast
    drivers/firmware/efi/libstub/x86-stub.c:953:65: sparse: sparse: non size-preserving pointer to integer cast
drivers/firmware/efi/libstub/x86-stub.c:980:70: sparse: sparse: non size-preserving integer to pointer cast
    drivers/firmware/efi/libstub/x86-stub.c:1014:45: sparse: sparse: non size-preserving integer to pointer cast

vim +945 drivers/firmware/efi/libstub/x86-stub.c

    927
    928  static bool efi_secure_launch_update_boot_params(struct slr_table *slrt,
    929                                                   struct boot_params *boot_params)
    930  {
    931          struct slr_entry_intel_info *txt_info;
    932          struct slr_entry_policy *policy;
    933          struct txt_os_mle_data *os_mle;
    934          bool updated = false;
    935          int i;
    936
    937          txt_info = slr_next_entry_by_tag(slrt, NULL, SLR_ENTRY_INTEL_INFO);
    938          if (!txt_info)
    939                  return false;
    940
    941          os_mle = txt_os_mle_data_start((void *)txt_info->txt_heap);
    942          if (!os_mle)
    943                  return false;
    944
  > 945          os_mle->boot_params_addr = (u64)boot_params;
    946
    947          policy = slr_next_entry_by_tag(slrt, NULL, SLR_ENTRY_ENTRY_POLICY);
    948          if (!policy)
    949                  return false;
    950
    951          for (i = 0; i < policy->nr_entries; i++) {
    952                  if (policy->policy_entries[i].entity_type == SLR_ET_BOOT_PARAMS) {
    953                          policy->policy_entries[i].entity = (u64)boot_params;
    954                          updated = true;
    955                          break;
    956                  }
    957          }
    958
    959          /*
    960           * If this is a PE entry into EFI stub the mocked up boot params will
    961           * be missing some of the setup header data needed for the second stage
    962           * of the Secure Launch boot.
    963           */
    964          if (image) {
    965                  struct setup_header *hdr = (struct setup_header *)((u8 *)image->image_base +
    966                                              offsetof(struct boot_params, hdr));
    967                  u64 cmdline_ptr;
    968
    969                  boot_params->hdr.setup_sects = hdr->setup_sects;
    970                  boot_params->hdr.syssize = hdr->syssize;
    971                  boot_params->hdr.version = hdr->version;
    972                  boot_params->hdr.loadflags = hdr->loadflags;
    973                  boot_params->hdr.kernel_alignment = hdr->kernel_alignment;
    974                  boot_params->hdr.min_alignment = hdr->min_alignment;
    975                  boot_params->hdr.xloadflags = hdr->xloadflags;
    976                  boot_params->hdr.init_size = hdr->init_size;
    977                  boot_params->hdr.kernel_info_offset = hdr->kernel_info_offset;
    978                  efi_set_u64_form(boot_params->hdr.cmd_line_ptr, boot_params->ext_cmd_line_ptr,
    979                                   &cmdline_ptr);
  > 980                  boot_params->hdr.cmdline_size = strlen((const char *)cmdline_ptr);
    981          }
    982
    983          return updated;
    984  }
    985

--
0-DAY CI Kernel Test Service
https://urldefense.com/v3/__https://github.com/intel/lkp-tests/wiki__;!!ACWV5N9M2RV99hQ!KhkZK77BXRIR4F24tKkUeIlIrdqXtUW2vcnDV74c_5BmrQBQaQ4FqcDKKv9LB3HQUocTGkrmIy5kGTJf$






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