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Bluetooth: Mesh: Fix build warning with Warray-bounds

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../zephyrNew/subsys/bluetooth/mesh/prov.c: In function
'bt_mesh_prov_reset_state': ../zephyrNew/subsys/bluetooth/mesh
/prov.c:61:2⚠️ '__builtin_memset' offset [52, 292] from
the object at 'bt_mesh_prov_link' is out of the bounds of referenced
subobject 'dhkey' with type 'uint8_t[32]' {aka 'unsigned char[32]'}
at offset 19 [-Warray-bounds] 61 | memset(&bt_mesh_prov_link.dhkey, 0,

Fixes: #29634

Signed-off-by: Lingao Meng <mengabc1086@gmail.com>
This commit is contained in:
Lingao Meng 2020-09-17 13:47:37 +08:00 • committed by Johan Hedberg
commit 0bcd66ac36
1 changed files with 3 additions and 2 deletions
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5
subsys/bluetooth/mesh/prov.c
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@ -50,6 +50,7 @@ int bt_mesh_prov_reset_state(void (*func)(const uint8_t key[64]))
{
int err;
static struct bt_pub_key_cb pub_key_cb;
const size_t offset = offsetof(struct bt_mesh_prov_link, dhkey);
pub_key_cb.func = func ? func : pub_key_ready;
@ -58,8 +59,8 @@ int bt_mesh_prov_reset_state(void (*func)(const uint8_t key[64]))
bt_mesh_attention(NULL, 0);
}
memset(&bt_mesh_prov_link.dhkey, 0,
sizeof(bt_mesh_prov_link) - offsetof(struct bt_mesh_prov_link, dhkey));
(void)memset((uint8_t *)&bt_mesh_prov_link + offset, 0,
sizeof(bt_mesh_prov_link) - offset);
err = bt_pub_key_gen(&pub_key_cb);
if (err) {