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test(relinker): pin invalid guest PT_TLS outside file image #13776

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test(relinker): pin invalid guest PT_TLS outside file image #13776

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12 changes: 12 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 +76,17 @@ def change_tag(image, tag, value=None, replacement=None):
raise AssertionError(f"Missing dynamic tag {tag:#x}")


def invalid_tls_outside_file(image):
image = bytearray(image)
phnum, = struct.unpack_from("<H", image, 56)
insert_at = 64 + phnum * 56
if insert_at + 56 > len(image):
image.extend(bytes(insert_at + 56 - len(image)))
struct.pack_into("<IIQQQQQQ", image, insert_at, 7, 4, 0x27f9, 0x1100, 0, 8, 8, 8)
struct.pack_into("<H", image, 56, phnum + 1)
return image


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 +149,7 @@ 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"
yield "invalid-tls-segment-outside-file", invalid_tls_outside_file(module([NOOP], sce=sce)), "PT_TLS initialization image is outside the file"


def main():
Expand Down
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