From: Aleksandrs Vinarskis <alex.vinarskis@gmail.com> stable inclusion from stable-v4.19.323 commit ea69502703bd3c38c3f016f8b6614ef0de2b94c2 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IBBN6V Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit a0a2459b79414584af6c46dd8c6f866d8f1aa421 ] ACPICA commit 6c551e2c9487067d4b085333e7fe97e965a11625 Link: https://github.com/acpica/acpica/commit/6c551e2c Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Qi Xi <xiqi2@huawei.com> --- drivers/acpi/acpica/exprep.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c index 228feeea555f..91143bcfe090 100644 --- a/drivers/acpi/acpica/exprep.c +++ b/drivers/acpi/acpica/exprep.c @@ -437,6 +437,9 @@ acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info) if (info->connection_node) { second_desc = info->connection_node->object; + if (second_desc == NULL) { + break; + } if (!(second_desc->common.flags & AOPOBJ_DATA_VALID)) { status = acpi_ds_get_buffer_arguments(second_desc); -- 2.33.0