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meaningless p_offset for zero p_filesz PT_LOAD

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This patch avoids generating PT_LOAD segments that trip a bug in
glibc's loader.

	PR 25237
	PR 32763
	* elf.c (assign_file_positions_for_load_sections): Don't put
	p_offset zero for empty PT_LOAD.
This commit is contained in:
Alan Modra 2025-03-10 23:02:19 +10:30
parent b8c5ada174
commit ebed0bfecc
1 changed files with 4 additions and 1 deletions

5
bfd/elf.c

@ -6170,7 +6170,10 @@ assign_file_positions_for_load_sections (bfd *abfd,
align = p->p_align;
if (align < 1)
align = 1;
p->p_offset = off % align;
/* Avoid p_offset of zero, which might be wrongly
interpreted as the segment being the first one,
containing the file header. PR32763. */
p->p_offset = (off + align - 1) % align + 1;
}
}
else