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test: pin duplicate guest dynamic tag rejection #13741

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test: pin duplicate guest dynamic tag rejection #13741

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14 changes: 14 additions & 0 deletions core/relinker/relinker/tests/test_guest_none_relocations.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,18 @@ def change_tag(image, tag, value=None, replacement=None):
raise AssertionError(f"Missing dynamic tag {tag:#x}")


def insert_dynamic_tag(image, tag, value):
for position in range(0x2000, 0x2200, 16):
current, _ = struct.unpack_from("<qQ", image, position)
if current == 0:
struct.pack_into("<qQ", image, position, tag, value)
struct.pack_into("<qQ", image, position + 16, 0, 0)
size, = struct.unpack_from("<Q", image, 176 + 32)
struct.pack_into("<QQ", image, 176 + 32, size + 16, size + 16)
return image
raise AssertionError("Missing dynamic terminator")


def unsized_lifecycle(rela, sce, initial):
image = module(rela, sce=sce, lifecycle=True, initial=initial)
return change_tag(change_tag(image, 27, replacement=0x61000001), 28, replacement=0x61000001)
Expand Down Expand Up @@ -138,6 +150,8 @@ def invalid_cases(sce):
ambiguous = module(plt=[NOOP], sce=sce)
yield "ambiguous-plt-format", change_tag(ambiguous, 0x61000027 if sce else 3, value=7,
replacement=20 if sce else 0x6100002b), "Missing or ambiguous dynamic tag"
strtab = 0x61000035 if sce else 5
yield "duplicate-dynamic-tag-strtab", insert_dynamic_tag(module([NOOP], sce=sce), strtab, 0), f"Duplicate dynamic tag {strtab}"


def main():
Expand Down
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