https://sourceware.org/bugzilla/show_bug.cgi?id=22829
Bug ID: 22829
Summary: objcopy/strip: PT_GNU_RELRO is removed when it's not
at the beginning of a PT_LOAD area
Product: binutils
Version: 2.31 (HEAD)
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: ngg at tresorit dot com
Target Milestone: ---
The assign_file_positions_for_non_load_sections() function in bfd/elf.c removes
a PT_GNU_RELRO segment if there is no corresponding PT_LOAD segment. This check
is made by comparing the two segments' p_paddr fields for equality.
The lld linker can assign a single PT_LOAD for multiple sections even if only
some of those will be marked as relro. In this case the p_paddr fields do not
match and strip/objcopy wrongfully removes the PT_GNU_RELRO segment.
Unfortunately it's not that easy to fix because if the equality check is fixed
to recognize an overlapping PT_LOAD segment then that segment's parameters
(vaddr, paddr, offset, ...) override the PT_GNU_RELRO segment's parameters
which is not what we would want.
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
bug-binutils mailing list
[email protected]
https://lists.gnu.org/mailman/listinfo/bug-binutils
