ubsan: integer overflow in section filepos subtraction

* elf.c (assign_file_positions_for_non_load_sections): Avoid
	signed integer overflow.
This commit is contained in:
Alan Modra 2022-01-01 13:52:26 +10:30
parent bb67763979
commit aebb3d543d

View File

@ -6289,8 +6289,7 @@ assign_file_positions_for_non_load_sections (bfd *abfd,
Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr;
if (hdr->sh_type != SHT_NOBITS)
{
p->p_filesz = (sect->filepos - m->sections[0]->filepos
+ hdr->sh_size);
p->p_filesz = sect->filepos - p->p_offset + hdr->sh_size;
/* NB: p_memsz of the loadable PT_NOTE segment
should be the same as p_filesz. */
if (p->p_type == PT_NOTE