Hi Atish, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: fb57b1fabcb28f358901b2df90abd2b48abc1ca8 commit: 2e0eb483c058dd013be8e3d0ec1767be531485a2 [3391/10701] efi/libstub: Move arm-stub to a common file config: arm64-randconfig-r026-20200519 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 135b877874fae96b4372c8a3fbfaa8ff44ff86e3) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu git checkout 2e0eb483c058dd013be8e3d0ec1767be531485a2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/firmware/efi/libstub/efi-stub.c:68:6: warning: no previous prototype for function 'install_memreserve_table' [-Wmissing-prototypes] void install_memreserve_table(void) ^ drivers/firmware/efi/libstub/efi-stub.c:68:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void install_memreserve_table(void) ^ static efi_status_t efi_entry(efi_handle_t handle, efi_system_table_t *sys_table_arg) ^ drivers/firmware/efi/libstub/efi-stub.c:148:1: note: declare 'static' if the function is not intended to be used outside of this translation unit efi_status_t efi_entry(efi_handle_t handle, efi_system_table_t *sys_table_arg) ^ static 2 warnings generated. vim +/efi_entry +148 drivers/firmware/efi/libstub/efi-stub.c b844470f22061e drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2018-09-21 124 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 125 /* 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 126 * This function handles the architcture specific differences between arm and 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 127 * arm64 regarding where the kernel image must be loaded and any memory that 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 128 * must be reserved. On failure it is required to free all 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 129 * all allocations it has made. 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 130 */ cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 131 efi_status_t handle_kernel_image(unsigned long *image_addr, 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 132 unsigned long *image_size, 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 133 unsigned long *reserve_addr, 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 134 unsigned long *reserve_size, 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 135 unsigned long dram_base, 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 136 efi_loaded_image_t *image); 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 137 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 138 asmlinkage void __noreturn efi_enter_kernel(unsigned long entrypoint, 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 139 unsigned long fdt_addr, 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 140 unsigned long fdt_size); 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 141 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 142 /* 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 143 * EFI entry point for the arm/arm64 EFI stubs. This is the entrypoint 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 144 * that is described in the PE/COFF header. Most of the code is the same 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 145 * for both archictectures, with the arch-specific code provided in the 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 146 * handle_kernel_image() function. 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 147 */ 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 @148 efi_status_t efi_entry(efi_handle_t handle, efi_system_table_t *sys_table_arg) 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 149 { 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 150 efi_loaded_image_t *image; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 151 efi_status_t status; 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 152 unsigned long image_addr; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 153 unsigned long image_size = 0; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 154 unsigned long dram_base; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 155 /* addr/point and size pairs for memory management*/ 79d3219d4e56b3 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-04 156 unsigned long initrd_addr = 0; 9302c1bb8e4758 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 157 unsigned long initrd_size = 0; 345c736edd07b6 drivers/firmware/efi/arm-stub.c Ard Biesheuvel 2014-04-03 158 unsigned long fdt_addr = 0; /* Original DTB */ a643375f4b1755 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2015-03-04 159 unsigned long fdt_size = 0; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 160 char *cmdline_ptr = NULL; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 161 int cmdline_size = 0; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 162 efi_guid_t loaded_image_proto = LOADED_IMAGE_PROTOCOL_GUID; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 163 unsigned long reserve_addr = 0; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 164 unsigned long reserve_size = 0; de8cb458625c16 drivers/firmware/efi/libstub/arm-stub.c David Howells 2017-02-06 165 enum efi_secureboot_mode secure_boot; f0827e18a7a1da drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-04-25 166 struct screen_info *si; b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 167 efi_properties_table_t *prop_tbl; ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 168 unsigned long max_addr; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 169 2fcdad2a80a6d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 170 sys_table = sys_table_arg; 2fcdad2a80a6d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 171 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 172 /* Check if we were booted by the EFI firmware */ 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 173 if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) { 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 174 status = EFI_INVALID_PARAMETER; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 175 goto fail; 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 176 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 177 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 178 status = check_platform_features(); b9d6769b5678db drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-02-17 179 if (status != EFI_SUCCESS) b9d6769b5678db drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-02-17 180 goto fail; b9d6769b5678db drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-02-17 181 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 182 /* 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 183 * Get a handle to the loaded image protocol. This is used to get 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 184 * information about the running image, such as size and the command 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 185 * line. 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 186 */ 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 187 status = sys_table->boottime->handle_protocol(handle, 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 188 &loaded_image_proto, (void *)&image); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 189 if (status != EFI_SUCCESS) { 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 190 pr_efi_err("Failed to get loaded image protocol\n"); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 191 goto fail; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 192 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 193 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 194 dram_base = get_dram_base(); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 195 if (dram_base == EFI_ERROR) { 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 196 pr_efi_err("Failed to find DRAM base\n"); 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 197 status = EFI_LOAD_ERROR; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 198 goto fail; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 199 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 200 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 201 /* 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 202 * Get the command line from EFI, using the LOADED_IMAGE 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 203 * protocol. We are going to copy the command line into the 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 204 * device tree, so this can be allocated anywhere. 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 205 */ 1e45bf7372c48c drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 206 cmdline_ptr = efi_convert_cmdline(image, &cmdline_size, ULONG_MAX); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 207 if (!cmdline_ptr) { 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 208 pr_efi_err("getting command line via LOADED_IMAGE_PROTOCOL\n"); 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 209 status = EFI_OUT_OF_RESOURCES; 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 210 goto fail; 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 211 } 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 212 eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 213 if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 214 IS_ENABLED(CONFIG_CMDLINE_FORCE) || eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 215 cmdline_size == 0) eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 216 efi_parse_options(CONFIG_CMDLINE); eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 217 eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 218 if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && cmdline_size > 0) eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 219 efi_parse_options(cmdline_ptr); eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 220 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 221 pr_efi("Booting Linux Kernel...\n"); eeff7d634f4750 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 222 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 223 si = setup_graphics(); f0827e18a7a1da drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-04-25 224 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 225 status = handle_kernel_image(&image_addr, &image_size, 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 226 &reserve_addr, 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 227 &reserve_size, 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 228 dram_base, image); 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 229 if (status != EFI_SUCCESS) { 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 230 pr_efi_err("Failed to relocate kernel\n"); 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 231 goto fail_free_cmdline; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 232 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 233 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 234 efi_retrieve_tpm2_eventlog(); d99c1ba6a73b9e drivers/firmware/efi/libstub/arm-stub.c Xinwei Kong 2019-11-07 235 ccc829ba3624be drivers/firmware/efi/libstub/arm-stub.c Matthew Garrett 2017-08-25 236 /* Ask the firmware to clear memory on unclean shutdown */ cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 237 efi_enable_reset_attack_mitigation(); ccc829ba3624be drivers/firmware/efi/libstub/arm-stub.c Matthew Garrett 2017-08-25 238 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 239 secure_boot = efi_get_secureboot(); 73a6492589c87c drivers/firmware/efi/libstub/arm-stub.c Linn Crosetto 2016-04-25 240 345c736edd07b6 drivers/firmware/efi/arm-stub.c Ard Biesheuvel 2014-04-03 241 /* de8cb458625c16 drivers/firmware/efi/libstub/arm-stub.c David Howells 2017-02-06 242 * Unauthenticated device tree data is a security hazard, so ignore de8cb458625c16 drivers/firmware/efi/libstub/arm-stub.c David Howells 2017-02-06 243 * 'dtb=' unless UEFI Secure Boot is disabled. We assume that secure de8cb458625c16 drivers/firmware/efi/libstub/arm-stub.c David Howells 2017-02-06 244 * boot is enabled if we can't determine its state. 345c736edd07b6 drivers/firmware/efi/arm-stub.c Ard Biesheuvel 2014-04-03 245 */ 3d7ee348aa4127 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2018-07-11 246 if (!IS_ENABLED(CONFIG_EFI_ARMSTUB_DTB_LOADER) || 3d7ee348aa4127 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2018-07-11 247 secure_boot != efi_secureboot_mode_disabled) { 3d7ee348aa4127 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2018-07-11 248 if (strstr(cmdline_ptr, "dtb=")) 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 249 pr_efi("Ignoring DTB from command line.\n"); 345c736edd07b6 drivers/firmware/efi/arm-stub.c Ard Biesheuvel 2014-04-03 250 } else { 9302c1bb8e4758 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 251 status = efi_load_dtb(image, &fdt_addr, &fdt_size); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 252 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 253 if (status != EFI_SUCCESS) { 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 254 pr_efi_err("Failed to load device tree!\n"); 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 255 goto fail_free_image; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 256 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 257 } 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 258 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 259 if (fdt_addr) { 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 260 pr_efi("Using DTB from command line\n"); 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 261 } else { 345c736edd07b6 drivers/firmware/efi/arm-stub.c Ard Biesheuvel 2014-04-03 262 /* Look for a device tree configuration table entry. */ cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 263 fdt_addr = (uintptr_t)get_fdt(&fdt_size); 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 264 if (fdt_addr) 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 265 pr_efi("Using DTB from configuration table\n"); 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 266 } 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 267 0bcaa9040d0586 drivers/firmware/efi/libstub/arm-stub.c Mark Rutland 2014-10-23 268 if (!fdt_addr) 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 269 pr_efi("Generating empty DTB\n"); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 270 79d3219d4e56b3 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-04 271 if (!noinitrd()) { ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 272 max_addr = efi_get_max_initrd_addr(dram_base, image_addr); 79d3219d4e56b3 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-04 273 status = efi_load_initrd_dev_path(&initrd_addr, &initrd_size, 79d3219d4e56b3 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-04 274 max_addr); ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 275 if (status == EFI_SUCCESS) { ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 276 pr_efi("Loaded initrd from LINUX_EFI_INITRD_MEDIA_GUID device path\n"); ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 277 } else if (status == EFI_NOT_FOUND) { ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 278 status = efi_load_initrd(image, &initrd_addr, &initrd_size, ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 279 ULONG_MAX, max_addr); 594e576d4b93b8 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-03-29 280 if (status == EFI_SUCCESS && initrd_size > 0) ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 281 pr_efi("Loaded initrd from command line option\n"); ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 282 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 283 if (status != EFI_SUCCESS) ec93fc371f014a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-03 284 pr_efi_err("Failed to load initrd!\n"); 79d3219d4e56b3 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-04 285 } 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 286 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 287 efi_random_get_seed(); 568bc4e87033d2 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-11-12 288 b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 289 /* b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 290 * If the NX PE data feature is enabled in the properties table, we b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 291 * should take care not to create a virtual mapping that changes the b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 292 * relative placement of runtime services code and data regions, as b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 293 * they may belong to the same PE/COFF executable image in memory. b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 294 * The easiest way to achieve that is to simply use a 1:1 mapping. b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 295 */ b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 296 prop_tbl = get_efi_config_table(EFI_PROPERTIES_TABLE_GUID); b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 297 flat_va_mapping = prop_tbl && b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 298 (prop_tbl->memory_protection_attribute & b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 299 EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA); b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 300 38fb6652229c21 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-10-25 301 /* hibernation expects the runtime regions to stay in the same place */ b92165d2ba869a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-10 302 if (!IS_ENABLED(CONFIG_HIBERNATION) && !nokaslr() && !flat_va_mapping) { e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 303 /* e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 304 * Randomize the base of the UEFI runtime services region. e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 305 * Preserve the 2 MB alignment of the region by taking a e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 306 * shift of 21 bit positions into account when scaling e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 307 * the headroom value using a 32-bit random value. e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 308 */ 197decefdb79d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-17 309 static const u64 headroom = EFI_RT_VIRTUAL_LIMIT - 197decefdb79d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-17 310 EFI_RT_VIRTUAL_BASE - e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 311 EFI_RT_VIRTUAL_SIZE; e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 312 u32 rnd; e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 313 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 314 status = efi_get_random_bytes(sizeof(rnd), (u8 *)&rnd); e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 315 if (status == EFI_SUCCESS) { e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 316 virtmap_base = EFI_RT_VIRTUAL_BASE + e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 317 (((headroom >> 21) * rnd) >> (32 - 21)); e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 318 } e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 319 } e69176d68d26d6 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2017-04-04 320 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 321 install_memreserve_table(); b844470f22061e drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2018-09-21 322 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 323 status = allocate_new_fdt_and_exit_boot(handle, &fdt_addr, 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 324 efi_get_max_fdt_addr(dram_base), 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 325 initrd_addr, initrd_size, 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 326 cmdline_ptr, fdt_addr, fdt_size); 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 327 if (status != EFI_SUCCESS) 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 328 goto fail_free_initrd; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 329 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 330 efi_enter_kernel(image_addr, fdt_addr, fdt_totalsize((void *)fdt_addr)); 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 331 /* not reached */ 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 332 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 333 fail_free_initrd: 8173ec7905b5b0 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 334 pr_efi_err("Failed to update FDT and exit boot services\n"); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 335 cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 336 efi_free(initrd_size, initrd_addr); cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 337 efi_free(fdt_size, fdt_addr); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 338 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 339 fail_free_image: 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 340 efi_free(image_size, image_addr); cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 341 efi_free(reserve_size, reserve_addr); 2b5fe07a78a09a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2016-01-26 342 fail_free_cmdline: cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 343 free_screen_info(si); cd33a5c1d53e43 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2019-12-24 344 efi_free(cmdline_size, (unsigned long)cmdline_ptr); 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 345 fail: 9f9223778ef385 drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2020-02-17 346 return status; 3c7f255039a2ad drivers/firmware/efi/arm-stub.c Mark Salter 2014-04-15 347 } f3cdfd239da56a drivers/firmware/efi/libstub/arm-stub.c Ard Biesheuvel 2014-10-20 348 :::::: The code at line 148 was first introduced by commit :::::: 9f9223778ef385e79dc67f5ee48ee4c1fb757f6b efi/libstub/arm: Make efi_entry() an ordinary PE/COFF entrypoint :::::: TO: Ard Biesheuvel <ardb(a)kernel.org&gt; :::::: CC: Ard Biesheuvel <ardb(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org