tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git for-kernelci head: 295a2a7d5fd9ff0e1fd50d5265297464888cbfef commit: 295a2a7d5fd9ff0e1fd50d5265297464888cbfef [4/4] efi: use 32-bit alignment for efi_guid_t literals config: x86_64-randconfig-s021-20210309 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-262-g5e674421-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id... git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git git fetch --no-tags ardb for-kernelci git checkout 295a2a7d5fd9ff0e1fd50d5265297464888cbfef # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" drivers/infiniband/hw/hfi1/efivar.c:100:16: sparse: expected restricted __le32 [usertype] a drivers/infiniband/hw/hfi1/efivar.c:100:16: sparse: got unsigned int drivers/infiniband/hw/hfi1/efivar.c:100:16: sparse: expected restricted __le16 [usertype] b drivers/infiniband/hw/hfi1/efivar.c:100:16: sparse: got int drivers/infiniband/hw/hfi1/efivar.c:100:16: sparse: expected restricted __le16 [usertype] c drivers/infiniband/hw/hfi1/efivar.c:100:16: sparse: got int vim +100 drivers/infiniband/hw/hfi1/efivar.c 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 56 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 57 /* 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 58 * Read the named EFI variable. Return the size of the actual data in *size 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 59 * and a kmalloc'ed buffer in *return_data. The caller must free the 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 60 * data. It is guaranteed that *return_data will be NULL and *size = 0 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 61 * if this routine fails. 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 62 * 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 63 * Return 0 on success, -errno on failure. 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 64 */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 65 static int read_efi_var(const char *name, unsigned long *size, 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 66 void **return_data) 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 67 { 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 68 efi_status_t status; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 69 efi_char16_t *uni_name; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 70 efi_guid_t guid; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 71 unsigned long temp_size; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 72 void *temp_buffer; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 73 void *data; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 74 int i; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 75 int ret; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 76 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 77 /* set failure return values */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 78 *size = 0; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 79 *return_data = NULL; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 80 d79b348c354061 drivers/infiniband/hw/hfi1/efivar.c Ard Biesheuvel 2020-01-23 81 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 82 return -EOPNOTSUPP; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 83 5a267953baca23 drivers/staging/rdma/hfi1/efivar.c Janani Ravichandran 2016-02-09 84 uni_name = kcalloc(strlen(name) + 1, sizeof(efi_char16_t), GFP_KERNEL); 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 85 temp_buffer = kzalloc(EFI_DATA_SIZE, GFP_KERNEL); 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 86 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 87 if (!uni_name || !temp_buffer) { 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 88 ret = -ENOMEM; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 89 goto fail; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 90 } 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 91 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 92 /* input: the size of the buffer */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 93 temp_size = EFI_DATA_SIZE; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 94 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 95 /* convert ASCII to unicode - it is a 1:1 mapping */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 96 for (i = 0; name[i]; i++) 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 97 uni_name[i] = name[i]; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 98 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 99 /* need a variable for our GUID */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 @100 guid = HFI1_EFIVAR_GUID; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 101 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 102 /* call into EFI runtime services */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 103 status = efi.get_variable( 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 104 uni_name, 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 105 &guid, 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 106 NULL, 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 107 &temp_size, 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 108 temp_buffer); 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 109 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 110 /* 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 111 * It would be nice to call efi_status_to_err() here, but that 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 112 * is in the EFIVAR_FS code and may not be compiled in. 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 113 * However, even that is insufficient since it does not cover 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 114 * EFI_BUFFER_TOO_SMALL which could be an important return. 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 115 * For now, just split out succces or not found. 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 116 */ 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 117 ret = status == EFI_SUCCESS ? 0 : 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 118 status == EFI_NOT_FOUND ? -ENOENT : 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 119 -EINVAL; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 120 if (ret) 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 121 goto fail; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 122 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 123 /* 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 124 * We have successfully read the EFI variable into our 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 125 * temporary buffer. Now allocate a correctly sized 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 126 * buffer. 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 127 */ 94b397cd253396 drivers/staging/rdma/hfi1/efivar.c Amitoj Kaur Chawla 2016-02-16 128 data = kmemdup(temp_buffer, temp_size, GFP_KERNEL); 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 129 if (!data) { 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 130 ret = -ENOMEM; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 131 goto fail; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 132 } 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 133 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 134 *size = temp_size; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 135 *return_data = data; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 136 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 137 fail: 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 138 kfree(uni_name); 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 139 kfree(temp_buffer); 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 140 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 141 return ret; 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 142 } 5d9157aafb16be drivers/staging/rdma/hfi1/efivar.c Dean Luick 2015-11-16 143 :::::: The code at line 100 was first introduced by commit :::::: 5d9157aafb16bed45e3bf167baa16f1fbe1090cd staging/rdma/hfi1: Read EFI variable for device description :::::: TO: Dean Luick <dean.luick(a)intel.com&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org