tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   72714841b705a5b9bccf37ee85a62352bee3a3ef
commit: 393f203f5fd54421fddb1e2a263f64d3876eeadb x86_64: kasan: add interceptors for memset/memmove/memcpy functions
date:   7 months ago
config: i386-randconfig-i0-201537 (attached as .config)
reproduce:
  git checkout 393f203f5fd54421fddb1e2a263f64d3876eeadb
  # save the attached .config to linux build tree
  make ARCH=i386 

All warnings (new ones prefixed by >>):

   drivers/firmware/efi/libstub/efi-stub-helper.c: In function 'efi_relocate_kernel':
>> drivers/firmware/efi/libstub/efi-stub-helper.c:599:2: warning: implicit declaration of function 'memcpy' [-Wimplicit-function-declaration]
     memcpy((void *)new_addr, (void *)cur_image_addr, image_size);
     ^

vim +/memcpy +599 drivers/firmware/efi/libstub/efi-stub-helper.c

4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  583  	 * If preferred address allocation failed allocate as low as
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  584  	 * possible.
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  585  	 */
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  586  	if (status != EFI_SUCCESS) {
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  587  		status = efi_low_alloc(sys_table_arg, alloc_size, alignment,
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  588  				       &new_addr);
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  589  	}
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  590  	if (status != EFI_SUCCESS) {
f966ea02 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-12-13  591  		pr_efi_err(sys_table_arg, "Failed to allocate usable memory for kernel.\n");
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  592  		return status;
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  593  	}
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  594  
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  595  	/*
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  596  	 * We know source/dest won't overlap since both memory ranges
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  597  	 * have been allocated by UEFI, so we can safely use memcpy.
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  598  	 */
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22 @599  	memcpy((void *)new_addr, (void *)cur_image_addr, image_size);
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  600  
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  601  	/* Return the new address of the relocated image. */
4a9f3a7c drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  602  	*image_addr = new_addr;
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  603  
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  604  	return status;
c6866d72 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  605  }
5fef3870 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  606  
5fef3870 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22  607  /*

:::::: The code at line 599 was first introduced by commit
:::::: 4a9f3a7c336a6b0ffeef2523bef93e67b0921163 efi: Generalize relocate_kernel() for use by other architectures.

:::::: TO: Roy Franz <roy.franz@linaro.org>
:::::: CC: Matt Fleming <matt.fleming@intel.com>

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