linux - tools/objtool/tests/generic/test-module-object.sh

31 lines · 1.0 KiB

1	#!/bin/bash
2	# SPDX-License-Identifier: GPL-2.0
3	#
4	# A klp relocation section is named for the object being patched, not for the
5	# object which happens to own the symbol being referenced. Deriving it from
6	# the symbol means a cross-module reference lands in a section for an object
7	# the patch may not even touch, so the relocation is never applied and the call
8	# goes somewhere arbitrary.
9
10	. "$(dirname "$0")/../lib.sh"
11
12	setup
13	build_module_pair cross_module.c klp_testmod
14
15	# The fixture has to have built as a module for any of this to mean anything.
16	in_sections orig.o \| grep -q '\.modinfo' \|\|
17	fail "fixture has no .modinfo"
18
19	# other_mod_func belongs to a different module than the one being patched.
20	add_exports other_mod other_mod_func
21	run_diff
22
23	# Named for the patched object ...
24	assert_section __klp_relocs.klp_testmod
25	# ... not for the object owning the symbol.
26	assert_no_section __klp_relocs.other_mod
27
28	run_post_link
29	assert_klp_rela klp_testmod .text.target
30
31	pass "klp relocation section named for the patched object"