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Subject[PATCH -next] drivers/base/test: fix global-out-of-bounds error
Date
The commit c032ace71c29 ("software node: add basic tests for property
entries") introduced a global-out-of-bounds error because it forgot to
add a terminator of "nodes "for software_node_register_nodes() to
process.

# Subtest: property-entry
1..7
ok 1 - pe_test_uints
ok 2 - pe_test_uint_arrays
ok 3 - pe_test_strings
ok 4 - pe_test_bool
ok 5 - pe_test_move_inline_u8
ok 6 - pe_test_move_inline_str
==================================================================
BUG: KASAN: global-out-of-bounds in
software_node_register_nodes+0x41/0x80
Read of size 8 at addr ffffffff989ef250 by task kunit_try_catch/316

CPU: 17 PID: 316 Comm: kunit_try_catch Not tainted
5.5.0-rc4-next-20200106+ #1
Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385 Gen10, BIOS A40
03/09/2018
Call Trace:
dump_stack+0xa0/0xea
print_address_description.constprop.5.cold.7+0x64/0x384
__kasan_report.cold.8+0x7a/0xc0
kasan_report+0x12/0x20
__asan_load8+0x71/0xa0
software_node_register_nodes+0x41/0x80
pe_test_reference+0x1eb/0x1200
kunit_try_run_case+0x6b/0xd1
kunit_generic_run_threadfn_adapter+0x29/0x50
kthread+0x1e6/0x210
ret_from_fork+0x27/0x50

The buggy address belongs to the variable:
nodes.21544+0x30/0x920

Memory state around the buggy address:
ffffffff989ef100: fa fa fa fa 00 04 fa fa fa fa fa fa 00 00 00 00
ffffffff989ef180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff989ef200: fa fa fa fa 00 00 00 00 00 00 fa fa fa fa fa fa
^
ffffffff989ef280: 00 06 fa fa fa fa fa fa 00 00 04 fa fa fa fa fa
ffffffff989ef300: 00 00 fa fa fa fa fa fa 00 05 fa fa fa fa fa fa
==================================================================
Disabling lock debugging due to kernel taint
ok 7 - pe_test_reference
ok 8 - property-entry

Fixes: c032ace71c29 ("software node: add basic tests for property entries")
Signed-off-by: Qian Cai <cai@lca.pw>
---
drivers/base/test/property-entry-test.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/base/test/property-entry-test.c b/drivers/base/test/property-entry-test.c
index da812834b631..abe03315180f 100644
--- a/drivers/base/test/property-entry-test.c
+++ b/drivers/base/test/property-entry-test.c
@@ -366,6 +366,7 @@ static void pe_test_reference(struct kunit *test)
static const struct software_node nodes[] = {
{ .name = "1", },
{ .name = "2", },
+ { }
};

static const struct software_node_ref_args refs[] = {
--
2.21.0 (Apple Git-122.2)
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